Anomalous Postprocessing Dimensional Change of Injection-Molded Products Composed of Poly(lactic acid) and Poly(vinyl alcohol)
Source abstract
Abstract
The present study revealed that an injection-molded product comprising poly(lactic acid) (PLA) and poly(vinyl alcohol) (PVAL) exhibited an anomalous dimensional change, i.e., expansion in the flow direction, after postprocessing annealing (around 2.9% expansion by annealing at 80–100 °C for 3 h). Although the crystallization of the PLA during cooling was not accelerated by the addition of PVAL, the PLA showed transcrystallization from the dispersed PVAL droplets, which were deformed in the flow direction, during postprocessing annealing. Therefore, after annealing, the injection-molded products exhibited a high degree of molecular orientation, in contrast to the original unannealed products, which were not oriented. This anomalous behavior should be noted as a means of controlling dimensional change after processing.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: biodegradable polymer synthesis and properties · Additive Manufacturing and 3D Printing Technologies · Polymer crystallization and properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
Nagase Plastics Corporation, 1-1-17 Shinmachi, Nishi-ku, Osaka 550-8668, Japan
Funding
Japan Society for the Promotion of Science · Japan Science and Technology Agency
References (58)
Show source-provided references
1. Auras P. R. · 2020
2. Jimenez A. · 201410.1039/9781782624806 ↗
3. Yamaguchi M. · 2017
4. Sin L. T. · 2019
5. 10.1039/D1RA02390J10.1039/D1RA02390J ↗
6. Polylactic acid market size, share and trends analysis report by end use (Packaging, agriculture, transport, electronics, textile, others), by region, and segment forecasts, 2022–2030, Grand View Research, San Francisco, CA, 2022. https://www.grandviewresearch.com/industry-analysis/polylactic-acid-pla-market.
7. 10.1016/S0032-3861(03)00092-210.1016/S0032-3861(03)00092-2 ↗
8. 10.1016/j.progpolymsci.2012.07.00510.1016/j.progpolymsci.2012.07.005 ↗
9. 10.1007/s10924-014-0638-y10.1007/s10924-014-0638-y ↗
10. 10.1007/s10965-020-02071-y10.1007/s10965-020-02071-y ↗
11. Rhoades A. · 2020 · 283
12. 10.1002/pen.1024910.1002/pen.10249 ↗
13. 10.1080/10426914.2014.88046710.1080/10426914.2014.880467 ↗
14. Kazmer D. O. · 201610.3139/9781569905715 ↗
15. Chen S. C. · 201910.3139/9781569906040 ↗
16. 10.1007/s00170-022-08859-010.1007/s00170-022-08859-0 ↗
17. Tadmor Z. · 2006
18. 10.1016/j.polymer.2010.10.00710.1016/j.polymer.2010.10.007 ↗
19. 10.1038/pj.2013.8810.1038/pj.2013.88 ↗
20. 10.1515/epoly-2020-007110.1515/epoly-2020-0071 ↗
21. 10.1007/s10965-020-02198-y10.1007/s10965-020-02198-y ↗
22. 10.1016/j.polymer.2020.12256610.1016/j.polymer.2020.122566 ↗
23. 10.1122/1.55012310.1122/1.550123 ↗
24. 10.1007/BF0133135610.1007/BF01331356 ↗
25. 10.1002/app.149310.1002/app.1493 ↗
26. 10.1021/ie502531w10.1021/ie502531w ↗
27. 10.3390/polym1010117810.3390/polym10101178 ↗
28. 10.3390/polym1205108310.3390/polym12051083 ↗
29. 10.1016/j.polymer.2019.03.01510.1016/j.polymer.2019.03.015 ↗
30. 10.1002/app.4951610.1002/app.49516 ↗
31. 10.1002/pen.2564210.1002/pen.25642 ↗
32. 10.1122/1.142791210.1122/1.1427912 ↗
33. 10.1122/1.213533010.1122/1.2135330 ↗
34. 10.1122/1.510978810.1122/1.5109788 ↗
35. 10.1002/app.4425710.1002/app.44257 ↗
36. 10.1021/ie300526u10.1021/ie300526u ↗
37. 10.3390/molecules2001157910.3390/molecules20011579 ↗
38. 10.1021/acs.iecr.2c0127610.1021/acs.iecr.2c01276 ↗
39. 10.1016/j.polymer.2022.12504310.1016/j.polymer.2022.125043 ↗
40. 10.1021/acs.biomac.5b0029310.1021/acs.biomac.5b00293 ↗
41. 10.1002/app.4496010.1002/app.44960 ↗
42. 10.1016/j.vibspec.2013.10.00310.1016/j.vibspec.2013.10.003 ↗
43. 10.1038/s41428-020-0343-810.1038/s41428-020-0343-8 ↗
44. 10.1021/ma301482j10.1021/ma301482j ↗
45. 10.1016/j.polymer.2012.03.03410.1016/j.polymer.2012.03.034 ↗
46. 10.1016/j.compscitech.2013.04.01910.1016/j.compscitech.2013.04.019 ↗
47. 10.1016/j.eurpolymj.2019.02.01610.1016/j.eurpolymj.2019.02.016 ↗
48. 10.1002/pen.76025160810.1002/pen.760251608 ↗
49. Meijer H. E. H. · 2009
50. 10.1016/S0032-3861(00)00602-910.1016/S0032-3861(00)00602-9 ↗
51. 10.1007/s00397-005-0445-410.1007/s00397-005-0445-4 ↗
52. 10.1002/app.3195910.1002/app.31959 ↗
53. 10.1122/1.362641410.1122/1.3626414 ↗
54. 10.1002/mame.20110027010.1002/mame.201100270 ↗
55. 10.1002/app.5272810.1002/app.52728 ↗
56. 10.3390/ma1602086610.3390/ma16020866 ↗
57. Ward I. W. · 197510.1007/978-94-010-9803-8 ↗
58. Nesse W. D. · 1991