Eucommia ulmoides gum-based engineering materials: fascinating platforms for advanced applications
Source abstract
Abstract
Eucommia ulmoides gum (EUG) exhibits good rubber–plastic duality and great application potential in biomedicine, textiles, aerospace, and other fields. The extraction methods of EUG include mechanical (high-temperature cooking), alkali extraction, solvent, microbial (enzymatic hydrolysis), and comprehensive methods. However, the complicated preparation process and high cost of EUG greatly limit its application. EUG is composed mainly of trans-isoprene, and the high crystallinity of EUG at room temperature showing rigid plastics is due to the relatively regular and short identity period of its molecular chain. Through regulating the ratio of the three-phase structure of EUG (regular crystal region, completely irregular amorphous region, and intermediate region of transition pattern between the crystallized and amorphous regions), it exhibits rubber elasticity at room temperature. The application of EUG is closely related to its crystallinity and cross-linking degree. The double-bond modification of EUG by physical or chemical method can regulate its crystalline structure and cross-linking structure, so that EUG engineering materials that meet the performance requirements of multiple fields can be obtained. EUG with zero cross-linking degree is linear thermoplastic material, which is usually used in artificial limb, medical composite scaffold, composites denture soft lining, and modified plastic. EUG with low cross-linking degree is thermoelastic material, which is frequently used in the preparation of shape memory material, interfacial compatibilizer, and composite film. EUG with critical cross-linking degree is rubber-type material, which is regularly used in elastomer, self-healing material, and modified rubber. In this article, the extraction technology of EUG and its pros and cons and the structure and properties of EUG and their corresponding material states in the past 10 years were systematically discussed. The research progress of engineering materials in different states was introduced, and the effect of modification on the structure and properties of EUG was discussed. The future development direction of the materials was prospected.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Polymer composites and self-healing · biodegradable polymer synthesis and properties · Polymer Nanocomposites and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (100+)
Show source-provided references
1. Xia L, Wang Y, Ma ZG, Xin ZX (2017) The organic-aqueous extraction of natural Eucommia ulmoides rubber and its properties and application in car radial tires. Adv Polym Technol 21607:1–6. https://doi.org/10.1002/adv.2160710.1002/adv.21607 ↗
2. Fisher Harry L (1927) Conversion of rubber into thermoplastic products with properties similar to gutta-percha, balata, and shellac. Ind Eng Chem 19(12):1325–1333. https://doi.org/10.1021/ie50216a01010.1021/ie50216a010 ↗
3. Dong M, Zhang T, Zhang J, Hou G, Yu M, Liu L (2020) Mechanism analysis of Eucommia ulmoides gum reducing the rolling resistance and the application study in green tires. Polym Test 87:106539. https://doi.org/10.1016/j.polymertesting.2020.10653910.1016/j.polymertesting.2020.106539 ↗
4. Qian S, Zhang C, Zhu Z, Huang P, Xu X (2020) White rot fungus Inonotus obliquus pretreatment to improve tran-1,4-polyisoprene extraction and enzymatic saccharification of Eucommia ulmoides leaves. Appl Biochem Biotech. https://doi.org/10.1007/s12010-020-03347-110.1007/s12010-020-03347-1 ↗
5. Song L, Zhang XJ, Dong DP, Wang QH (2006) A review of the properties and extraction of Eucommia rubber. Guizhou Chem Ind 04:4–8
6. Ma J, Lin YH, Liu B, Liu RC, Wang HY (2012) The development status and prospect of Eucommia ulmoides gum in China. J Anhui Agric Sci 40(06):3396–3398 + 3419. https://doi.org/10.13989/j.cnki.0517-6611.2012.06.21710.13989/j.cnki.0517-6611.2012.06.217 ↗
7. Gan LH, Ng SC (1986) Kinetic studies of the performic acid epoxidation of natural rubber latex stabilized by cationic surfactant. Eur Polym J 22(7):573–576. https://doi.org/10.1016/0014-3057(86)90186-210.1016/0014-3057(86)90186-2 ↗
8. Zhang JC, Xue ZH, Yan RF (2011) Natural polymer material—recent studies on Eucommia ulmoides gum. Acta Polym Sin 10:1105–1117. https://doi.org/10.3724/SP.J.1105.2011.1107610.3724/SP.J.1105.2011.11076 ↗
9. Strobl G (2006) Crystallization and melting of bulk polymers: new observations, conclusions and a thermodynamic scheme. Prog Polym Sci 31(4):398–442. https://doi.org/10.1016/j.progpolymsci.2006.01.00110.1016/j.progpolymsci.2006.01.001 ↗
10. Strobl G (2009) Colloquium: laws controlling crystallization and melting in bulk polymers. Rev Mod Phys 81(3):1287–1300. https://doi.org/10.1103/revmodphys.81.128710.1103/revmodphys.81.1287 ↗
11. Corrigan JP, Zemel IS, Woodward AE (2010) Crystallization of trans-1,4-polyisoprene and of hydrochlorinated segmented block copolymer derivatives from solution. J Polym Sci Pol Chem 27(5):1135–1147. https://doi.org/10.1002/polb.1989.09027051310.1002/polb.1989.090270513 ↗
12. Chaturvedi PN (1992) Multiple melting due to secondary crystallization in polymers. J Mater Sci 11(24):1692–1695. https://doi.org/10.1007/bf0073621110.1007/bf00736211 ↗
13. Cooper W, Smith RK (1963) Melting transitions in diene polymers. J Polym Sci Part A Gen Pap 1(1):159–168. https://doi.org/10.1002/pol.1963.10001011310.1002/pol.1963.100010113 ↗
14. Anandakumaran K, Kuo CC, Mukherji S, Woodward AE (1982) Crystallization of trans-1,4-polyisoprene. J Polym Sci Polym Phys Ed 20(9):1669–1676. https://doi.org/10.1002/pol.1982.18020091610.1002/pol.1982.180200916 ↗
15. Hu JL, Chen SJ (2010) A review of actively moving polymers in textile applications. J Mater Chem 20(17):3346. https://doi.org/10.1039/B922872A10.1039/B922872A ↗
16. Chan BQY, Low ZWK, Heng SJW, Chan SY, Owh C, Loh XJ (2016) Recent advances in shape memory soft materials for biomedical applications. ACS Appl Mater Interface 8:10070–10087. https://doi.org/10.1021/acsami.6b0129510.1021/acsami.6b01295 ↗
17. Liu YJ, Du HY, Liu LW, Leng JS (2014) Shape memory polymers and their composites in aerospace applications: a review. Smart Mater Struct 23(2):023001. https://doi.org/10.1088/0964-1726/23/2/02300110.1088/0964-1726/23/2/023001 ↗
18. Nakazawa Y (2009) Industrial material for Eucommia rubber (or gum). Bio Ind 26(5):54–59
19. Yan RF, Yang DA, Jiang ZH, Lu XK, Zhai WH (1994) A method for extracting Eucommia ulmoides gum[P]. CN1088601, 1994-06-29. https://kns8.cnki.net/kcms/detail/detail.aspx?dbcode=SCPD&dbname=SCPD0003&filename=CN1088601&uid=WEEvREcwSlJHSldSdmVqM1BLUWdMWjJ2SnRwY1gyVEhjK2s4aEZtQ3dXST0=$9A4hF_YAuvQ5obgVAqNKPCYcEjKensW4IQMovwHtwkF4VYPoHbKxJw!!
20. Ma BL, Liang SF (1996) Study on extracting Eucommia rubber with gummy method. Nat Prod Res Dev 01:79–83. https://doi.org/10.16333/j.1001-6880.1996.01.01810.16333/j.1001-6880.1996.01.018 ↗
21. Xie XT, Lu BQ, Wang ZB, Ding LX (2013) Extraction technique of Eucommia gum from residue of Eucommia ulmoides leaves. Biomass Chem Eng 47(5):35–39. https://doi.org/10.3969/j.issn.1673-5854.2013.05.00710.3969/j.issn.1673-5854.2013.05.007 ↗
22. He GJ (2011) Optimization of extraction process for oil and gutta-percha from key fruit of Eucommia ulmoides oliv. J Anhui Agric Sci 39(18):10846–10848. https://doi.org/10.13989/j.cnki.0517-6611.2011.18.20810.13989/j.cnki.0517-6611.2011.18.208 ↗
23. He GJ (2011) Study on extraction of Eucommia ulmoides oliver seed oil and eueomfnia rubber from Eucommia ulmoides olive. J Guiyang Univ (Nat Sci) 06(1):14–18. https://doi.org/10.16856/j.cnki.52-1142/n.2011.01.00310.16856/j.cnki.52-1142/n.2011.01.003 ↗
24. Zhang XJ, Zhou LH, Zhang GF, Tan H, Ji C (2001) Extraction of gutta-percha from the bark and the leaves of Eucommia (Eucommia ulmoides). J Guizhou Univ Technol (Nat Sci Ed) 30(6):11–14
25. Zhang XJ, Wang QH, Song L, Han SF, Gong BH (2007) The solution-precipitation of Eucommia ulmoides gum in petroleum ether at different temperatures to extract the gum. Nat Prod Res Dev 6:1062–1066. https://doi.org/10.16333/j.1001-6880.2007.06.03610.16333/j.1001-6880.2007.06.036 ↗
26. Zheng RJ (2006) A study on the function of microorganism fermentation in extracting gutta-percha. Master’s Thesis, Northwest A&F University, Yangling, China
27. Zhang XJ, Gong BH, Wang QH, Han SF, Cheng C (2009) Hydrolysis of plant cell wall of Eucommia ulmoides by cellulase and extraction of long silk gum. Nat Prod Res Dev 21(01):115–121. https://doi.org/10.16333/j.1001-6880.2009.01.01210.16333/j.1001-6880.2009.01.012 ↗
28. Liang NN, Wang YW, Xia L, Xin ZX, Zhang XJ (2014) Analysis on structure and efficiency of Eucommia ulmoides gum extracted in composite enzyme treatment method. J Qingdao Univ Sci Technol (Nat Sci Ed) 35(4):383–386. https://doi.org/10.16351/j.1672-6987.2014.04.00610.16351/j.1672-6987.2014.04.006 ↗
29. Liu GH, Xiao MF, Peng XJ, Zhang YK (2009) Research of lnvestigation targets in enzyme pretreatment shell of Eucommia ulmoide. J Jishou Univ (Nat Sci Ed) 30(2):74–77
30. Liu GH, Zhang YK, Xiao MF, Peng XJ (2010) Extracting Eucommia ulmoides oliv. gum by cellulase pretreatment. Chem Ind For Prod 30(02):77–82
31. Wang C, Mao B, Wang X, Yang Q, Wan DJ (2012) Extraction of Eucommia ulmoides gum by high-temperature cooking combined with solvent extraction method. Chem Bioeng 29(02):77–79. https://doi.org/10.3969/j.issn.1672-5425.2012.02.02110.3969/j.issn.1672-5425.2012.02.021 ↗
32. Chen ZB (1986) Method of extracting gutta-percha from leaves or skins of Eucommia ulmoides [P]. CN86100216, 1986-09-10. https://kns8.cnki.net/kcms/detail/detail.aspx?dbcode=SCPD&dbname=SCPD0003&filename=CN86100216&uid=WEEvREcwSlJHSldSdmVqM1BLUWdMWjJ2SnRwY1gyVEhjK2s4aEZtQ3dXST0=$9A4hF_YAuvQ5obgVAqNKPCYcEjKensW4IQMovwHtwkF4VYPoHbKxJw!!
33. Zhang XJ, Cheng C, Zhang MM, Lan XY, Wang QH, Han SF (2008) Effect of alkali and enzymatic pretreatments of Eucommia ulmoides leaves and barks on the extraction of gutta percha. J Agric Food Chem 56(19):8936–8943. https://doi.org/10.1021/jf800642y10.1021/jf800642y ↗
34. Wang FJ (2017) Analysis of development status, bottleneck and countermeasures of bio-based gutta-percha in China. China Rubber 33(3):10–13. https://doi.org/10.3969/j.issn.1009-5640.2017.03.00510.3969/j.issn.1009-5640.2017.03.005 ↗
35. Xu FY, Bo L, Zhang HW, Yao W, Liu QH (2010) Study on shape memory properties of TPI. China Rubber Ind 057(007):406–410. https://doi.org/10.3969/j.issn.1000-890X.2010.07.00410.3969/j.issn.1000-890X.2010.07.004 ↗
36. Zhu F, Zu EF, Pang WQ, Li XY (2005) The study and application of Eucommia ulmoides gum. J Anhui Univ (Nat Sci) 29(3):89–94
37. Yan RF (1991) New progress in research on gutta-percha. Chemistry 01:1–6. https://doi.org/10.14159/j.cnki.0441-3776.1991.01.00110.14159/j.cnki.0441-3776.1991.01.001 ↗
38. Feng ZB, Zhang JC, Zhang TX, Zhao XY, Zhang LQ (2017) Prospects and research progress of gutta-percha. China Rubber Ind 64(10):630–635. https://doi.org/10.3969/j.issn.1000-890X.2017.10.01310.3969/j.issn.1000-890X.2017.10.013 ↗
39. Zhang J, Zhang T, Dong M, Liu G, Dong Y (2017) Study on degrees of mesomorphic zone of polymer. I. Determination of degrees of crystallinity of Eucommia ulmoides gum and natural rubber by dynamic mechanical thermal analysis. Polym Test 63:511–520. https://doi.org/10.1016/j.polymertesting.2017.09.01810.1016/j.polymertesting.2017.09.018 ↗
40. Zhang J, Zhang T, Dong M, Liu G, Dong Y (2017) Study on degrees of mesomorphic zone of polymer. II. Determination of the degree of mesomorphic zone of Eucommia ulmoides gum and natural rubber by dynamic mechanical thermal analysis and differential scanning calorimetry. Polym Test 63:550–557. https://doi.org/10.1016/j.polymertesting.2017.09.02410.1016/j.polymertesting.2017.09.024 ↗
41. Bunn CW (1942) Molecular structure and rubber-like elasticity. I. The crystal structures of β-Gutta-Percha, rubber and polychloroprene. Rubber Chem Technol 15(4):709–790. https://doi.org/10.5254/1.354315810.5254/1.3543158 ↗
42. Schuur G (1954) Mechanism of the crystallization of high polymers. Rubber Chem Technol 27(2):374–384. https://doi.org/10.5254/1.354349210.5254/1.3543492 ↗
43. Fisher D (1953) Crystal structures of gutta percha. Proc Phys Soc 66(1):7–16. https://doi.org/10.1088/0370-1301/66/1/30310.1088/0370-1301/66/1/303 ↗
44. Cooper W, Vaughan G (1963) Crystallization of gutta percha and synthetic trans-1, 4-polyisoprenes. Polymer 4:329–34010.1016/0032-3861(63)90040-5 ↗
45. Cui SY, Zhang TC, Chen YH, Dong MJ, Liu GX, Zhang JJ, Li LL, Yue H (2020) Study on degrees of mesomorphic zone of polymer. III. Determination of the degree of crystallinity of Eucommia Ulmoides gum by VTFTIR and VTWAXD. Polym Test 89:106605. https://doi.org/10.1016/j.polymertesting.2020.10660510.1016/j.polymertesting.2020.106605 ↗
46. Yang D, Huang HZ (2009) Study and development of Eucommia ulmoide gum. World Rubber Ind 36(7):13–17
47. Zhao X (2017) The preparation and property of Eucommia ulmoides gum elastomer. Master’s Thesis, Beijing University of Chemical Technology, Beijing, China
48. Xia L, Gao H, Geng JT (2019) Facile fabrication of foamed natural Eucommia ulmoides gum composites with heat-triggered shape memory behavior. Polym Compos 40(8):3075–3083. https://doi.org/10.1002/pc.2515210.1002/pc.25152 ↗
49. Xian JY (2018) The study on preparation and properties of shape memory materials based on Eucommia rubber and polyethylene. Master’s Thesis, Qingdao University of Science & Technology, Qingdao, China
50. Wang Y, Xia L, Dong Y, Xin ZX (2018) Preparation and characterization of foamed CaCO3/Eucommia ulmoides gum shape memory composites. Acta Mater Compos Sin 35(08):1994–2001. https://doi.org/10.13801/j.cnki.fhclxb.20171128.00510.13801/j.cnki.fhclxb.20171128.005 ↗
51. Gao H, Zhang M, Chen S, Xia L (2019) Preparation and performance of ZDMA reinforced Eucommia shape memory composites. China Elastom 29(04):6–11. https://doi.org/10.16665/j.cnki.issn1005-3174.2019.04.00210.16665/j.cnki.issn1005-3174.2019.04.002 ↗
52. Kang HL, Xu MZ, Wang HY, Li L, Li JX, Fang QH, Zhang JC (2020) Heat-responsive shape memory Eucommia ulmoides gum composites reinforced by zinc dimethacrylate. J Appl Polym Sci. https://doi.org/10.1002/app.4913310.1002/app.49133 ↗
53. Wang Y, Liu JH, Xia L, Shen M, Wei LP, Xin ZX, Kim JK (2019) Fully biobased shape memory thermoplastic vulcanizates from poly(lactic acid) and modified natural Eucommia Ulmoides gum with co-continuous structure and super toughness. Polymers. https://doi.org/10.3390/polym1112204010.3390/polym11122040 ↗
54. Wang Y, Liu JH, Xia L, Shen M, Xin ZX (2019) Super-tough poly(lactic acid) thermoplastic vulcanizates with heat triggered shape memory behaviors based on modified natural Eucommia ulmoides gum. Polym Test 80:106077. https://doi.org/10.1016/j.polymertesting.2019.10607710.1016/j.polymertesting.2019.106077 ↗
55. Wang Y, Xia L, Xin ZX (2018) Triple shape memory effect of foamed natural Eucommia ulmoides gum/high-density polyethylene composites. Polym Adv Technol 29(1):190–197. https://doi.org/10.1002/pat.410210.1002/pat.4102 ↗
56. Wang Y, Xia L, Xin ZX (2018) Effect of crosslinking degree on properties of foamed Eucommia ulmoides gum shape memory materials. China Synth Rubber Ind 41(05):383–388
57. Wang Y, Xia L, Xin ZX, Kim JK (2019) Preparation and properties of Eucommia ulmoides gum/high density polyethylene shape memory materials with lightweight. China Synth Rubber Ind 42(04):300–305
58. Wang Y, Dong Y, Xia L, Xin ZX (2018) Fabrication and properties of foamed Eucommia ulmoides gum/HDPE shape memory materials. China Elastom 28(02):45–51. https://doi.org/10.16665/j.cnki.issn1005-3174.2018.02.01010.16665/j.cnki.issn1005-3174.2018.02.010 ↗
59. Xia L, Chen S, Fu WX, Qiu GX (2019) Shape memory behavior of natural Eucommia ulmoides gum and low-density polyethylene blends with two response temperatures. Polymers 11(4):580/1–580/11. https://doi.org/10.3390/polym1104058010.3390/polym11040580 ↗
60. Kang HL, Gong M, Xu MZ, Wang HY, Li YS, Fang QH, Zhang LQ (2019) Fabricated biobased Eucommia ulmoides gum/polyolefin elastomer thermoplastic vulcanizates into a shape memory material. Ind Eng Chem Res 58(16):6375–6384. https://doi.org/10.1021/acs.iecr.8b0471010.1021/acs.iecr.8b04710 ↗
61. Wang Y, Gao H, Xia L, Xin ZX (2019) Fabrication and properties of Eucommia ulmoides gum/polybutene-1 shape memory composites. Polym Mater Sci Eng 35(08):118–124. https://doi.org/10.16865/j.cnki.1000-7555.2019.023110.16865/j.cnki.1000-7555.2019.0231 ↗
62. Shi FF, Xia L, Xin ZX (2017) Preparation and properties of shape-memory Eucommia ulmoides gum/PBS composites. J Qingdao Univ Sci Technol (Nat Sci Ed) 38(04):78–83. https://doi.org/10.16351/j.1672-6987.2017.04.01210.16351/j.1672-6987.2017.04.012 ↗
63. Shi FF (2017) The study on the preparation and properties of shape memory composites based on Eucommia rubber. Master’s Thesis, Qingdao University of Science & Technology, Qingdao, China
64. Zhang HC, Ma CH, Sun RY, Liao XJ, Wu JH, Xie MR (2019) Sustainable elastomer of triazolinedione-modified Eucommia ulmoides gum with enhanced elasticity and shape memory capability. Polymer. https://doi.org/10.1016/j.polymer.2019.12190410.1016/j.polymer.2019.121904 ↗
65. Wang WY (2018) Design and synthesis of self-healing elastomer materials based on Eucommia ulmoides gum and natural rubber. Master’s Thesis, Shenyang University of Chemical Technology, Shenyang, China
66. Wu DY, Meure S, Solomon D (2008) Self-healing polymeric materials: a review of recent developments. Prog Polym Sci 33:479–522. https://doi.org/10.1016/j.progpolymsci.2008.02.00110.1016/j.progpolymsci.2008.02.001 ↗
67. Qi X, Zhang JC, Zhang LQ, Yue DM (2020) Bio-based self-healing Eucommia ulmoides ester elastomer with damping and oil resistance. J Mater Sci 55(11):4940–4951. https://doi.org/10.1007/s10853-019-04272-310.1007/s10853-019-04272-3 ↗
68. Wang CS, Zhang DW, Bian HG, Wang XB, Guo L (2011) Experimental study of screw speed effects on quality of short fiber-rubber composite material. Adv Mater Res 221:369–372. https://doi.org/10.4028/www.scientific.net/AMR.221.36910.4028/www.scientific.net/AMR.221.369 ↗
69. Li MC, Zhang Y, Cho UR (2014) Mechanical, thermal and friction properties of rice bran carbon/nitrile rubber composites: influence of particle size and loading. Mater Des 63(nov.):565–574. https://doi.org/10.1016/j.matdes.2014.06.03210.1016/j.matdes.2014.06.032 ↗
70. Wang LH, Ding TH, Wang P (2009) Influence of carbon black concentration on piezoresistivity for carbon-black-filled silicone rubber composite. Carbon 47(14):3151–3157. https://doi.org/10.1016/j.carbon.2009.06.05010.1016/j.carbon.2009.06.050 ↗
71. Xue Y, Li X, Zhang D, Wang H, Chen Y, Chen Y (2018) Comparison of ATH and SiO2 fillers filled silicone rubber composites for HTV insulators. Compos Sci Technol 155:137–143. https://doi.org/10.1016/j.compscitech.2017.12.00610.1016/j.compscitech.2017.12.006 ↗
72. Zhang DW, Wang CS, Lin GY (2011) Effects of rotor speed on manufacturing process of short fiber-rubber composite material. Adv Mater Res 221:350–355. https://doi.org/10.4028/www.scientific.net/AMR.221.35010.4028/www.scientific.net/AMR.221.350 ↗
73. Le HH, Sriharish MN, Henning S, Klehm J, Menzel M, Frank W et al (2014) Dispersion and distribution of carbon nanotubes in ternary rubber blends. Compos Sci Technol 90:180–186. https://doi.org/10.1016/j.compscitech.2013.11.00810.1016/j.compscitech.2013.11.008 ↗
74. Wang Y, Liu Jh, Xia L, Shen M, Xin ZX, Kim JK (2019) Role of epoxidized natural Eucommia ulmoides gum in modifying the interface of styrene-butadiene rubber/silica composites. Polym Adv Technol 30:2968–2976. https://doi.org/10.1002/pat.472610.1002/pat.4726 ↗
75. Wang Y, Xia L, Xin ZX (2018) Preparation and properties of styrene butadiene rubber/silica composites modified by epoxidized Eucommia ulmoides gum. China Synth Rubber Ind 41(02):115–119
76. Wang Y, Dong Y, Xia L, Xin ZX, Kim JK (2018) Preparation and properties of EPDM/silica composites modified with epoxidized Eucommia ulmoides gum. China Elastom 28(01):1–6 + 11. https://doi.org/10.1665/j.cnki.issn1005-3174.2018.01.00110.1665/j.cnki.issn1005-3174.2018.01.001 ↗
77. Xia L, Wang Y, Ma ZG, Du AH, Qiu GX, Xin ZX (2017) Preparation of epoxidized Eucommia ulmoides gum and its application in styrene-butadiene rubber (SBR)/silica composites. Polym Adv Technol 28(1):94–101. https://doi.org/10.1002/pat.386310.1002/pat.3863 ↗
78. Deng XY, Li ZG, Huang YX, Luan YB (2017) Improving mechanism and effect analysis of sulfurated and grafted Eucommia ulmoides Gum modified rubber asphalt. Constr Build Mater 148:715–722. https://doi.org/10.1016/j.conbuildmat.2017.05.10610.1016/j.conbuildmat.2017.05.106 ↗
79. Li ZG, Zhuo YJ, Kuang P (2009) Performance of asphalt modified by grafting Eucommia ulmoides gum. J Southeast Univ (Nat Sci Ed) 39(6):1222–1225. https://doi.org/10.3969/j.issn.1001-0505.2009.06.02610.3969/j.issn.1001-0505.2009.06.026 ↗
80. Li ZG, Zhao Y (2012) Research on performance of vulcanized Eucommia ulmoides gum blending with asphalt. Adv Mater Res 535–537:1652–1656. https://doi.org/10.4028/www.scientific.net/AMR.535-537.165210.4028/www.scientific.net/AMR.535-537.1652 ↗
81. Li ZG, Li C (2013) Improvement of properties of styrene-butadiene-styrene-modified bitumen by grafted Eucommia ulmoides gum. Road Mater Pavement Des 14(2):404–414. https://doi.org/10.1080/14680629.2013.80486310.1080/14680629.2013.804863 ↗
82. Li ZG, Li C (2014) Study on vulcanizing and asphalt modifying of Eucommia ulmoides gum. Appl Mech Mater 488–489, 765–768, 765. 10.4028/www.scientific.net/AMM.488-489.76510.4028/www.scientific.net/AMM.488-489.765 ↗
83. Li ZG, Li C, Cai MD (2014) Modification mechanism and effect of grafted Eucommia ulmoides gum on dry-process rubber bitumen mixture. J Southeast Univ (Nat Sci Ed) 44(04):845–848. https://doi.org/10.3969/j.issn.1001-0505.2014.04.02910.3969/j.issn.1001-0505.2014.04.029 ↗
84. Chen B, Wu Q, Li J, Lin KD, Chen DC, Zhou CL, Wu T, Luo XH, Liu YL (2020) A novel and green method to synthesize a epoxidized biomass eucommia gum as the nanofiller in the epoxy composite coating with excellent anticorrosive performance. Chem Eng J 379:122323. https://doi.org/10.1016/j.cej.2019.12232310.1016/j.cej.2019.122323 ↗
85. Yue PP, Leng ZJ, Bian J, Li MF, Peng F, Sun RC (2019) Fast and simple construction of composite films with renewable Eucommia ulmoides gum and Poly(epsilon-caprolactone). Compos Sci Technol 179:145–151. https://doi.org/10.1016/j.compscitech.2019.05.01010.1016/j.compscitech.2019.05.010 ↗
86. Sun QQ, Zhao XK, Wang DM, Dong J-e, SheD Peng P (2018) Preparation and characterization of nanocrystalline cellulose/Eucommia ulmoides gum nanocomposite film. Carbohydr Polym 181:825–832. https://doi.org/10.1016/j.carbpol.2017.11.07010.1016/j.carbpol.2017.11.070 ↗
87. Feng X, Kang HL, Yang F, Fang QH (2019) Preparation and properties of Eucommia ulmoides gum/epoxy resin anticorrosive coating. Mater Rep 33(22):3847–3852. https://doi.org/10.11896/cldb.1809025810.11896/cldb.18090258 ↗
88. Liang NN (2014) Epoxy modification of Eucommia ulmoides gum and preparation of super-hydrophobic composite material. Professional Master’s Thesis, Qingdao University of Science & Technology, Qingdao, China
89. Qi X, Xie F, Zhang JC, Zhang LQ, Yue DM (2019) Bio-based cyclized Eucommia ulmoides gum elastomer for promising damping applications. Rsc Adv 9(72):42367–42374. https://doi.org/10.1039/c9ra07856h10.1039/c9ra07856h ↗
90. Zhao J, Zhang HC, Ma CH, Han HJ, Sun RY, Xie MR (2019) Binary modification of Eucommia ulmoides gum toward elastomer with tunable mechanical properties and good compatibility. J Polym Sci Part A Polym Chem 57(11):1247–1255. https://doi.org/10.1002/pola.2938110.1002/pola.29381 ↗
91. Kang LJ (2019) Study on preparation and properties of high-elasticity Eucommia ulmoides gum. Master’s Thesis, East China Normal University, Shanghai, China
92. Zhao J (2019) Study on preparation and properties of UV-crosslinkable Eucommia ulmoides gum with high elasticity and wear resistance. Master’s Thesis, East China Normal University, Shanghai, China
93. Yang F, Wang F, Fang QH, Liu Q (2015) Epoxidation modification of nature Eucommia ulmoides gum by emulsion process. Polym Mater Sci Eng 31(5):56–61. https://doi.org/10.16865/j.cnki.1000-7555.2015.05.01010.16865/j.cnki.1000-7555.2015.05.010 ↗
94. Yang F, Yao L, Liu Q, Fang QH (2017) Comparison on properties of epoxidized Eucommia ulmoides gum and epoxidized synthetic trans-1,4-polyisoprene. Polym Mater Sci Eng 33(10):45–52. https://doi.org/10.16865/j.cnki.1000-7555.2017.10.00910.16865/j.cnki.1000-7555.2017.10.009 ↗
95. Yang F, Dai L, Liu T, Zhou JL, Fang QH (2019) Preparation of high-damping soft elastomer based on Eucommia ulmoides gum. Polym Bull 77:33–47. https://doi.org/10.1007/s00289-019-02723-010.1007/s00289-019-02723-0 ↗
96. Yang F, Meng XQ, Yu H (2017) Synthesis and characterization of butyl methacrylate grafted on Eucommia ulmoides gum. Polym Mater Sci Eng 33(04):19–24. https://doi.org/10.16865/j.cnki.1000-7555.2017.04.00410.16865/j.cnki.1000-7555.2017.04.004 ↗
97. Gong YX, Zhang XR, Wang WZ, Yang F (2016) Styrene grafted gutta-percha. China Synth Rubber Ind 39(04):294–297
98. Li YX (2015) Study on the hydrogenation of Eucommia ulmoides gum. Master’s Thesis, Beijing University of Chemical Technology, Beijing, China
99. Fang QH, Jin X, Yang F, Ma C, Gao Y, Wang N (2016) Preparation and characterizations of Eucommia ulmoides gum/polypropylene blend. Polym Bull 73(2):357–367. https://doi.org/10.1007/s00289-015-1491-410.1007/s00289-015-1491-4 ↗
100. Zhang XQ, Yang F, Kang HL, Han WC, Fang QH (2016) Properties and morphology of natural Eucommia ulmoides gum/polypropylene thermoplastic vulcanizates. China Synth Rubber Ind 39(3):234–238