High-strength nanocomposite based on fibrillated chemi-thermomechanical pulp
Source abstract
Abstract
Abstract The incompatibility between cellulose fibers and hydrophobic polymers has presented a major obstacle for the fabrication of composites and nanocomposites. In this study, we applied a one-time grinder treatment to disintegrate chemi-thermomechanical pulp (CTMP) and obtained micro- to nano-meter-sized lamellar or fibrous fragments. The CTMP fragments were composed of cellulose microfibrils with high aspect ratios encased in matrix substances including hydrophobic lignin. Furthermore, we produced compression-molded products from the CTMP fragments by thermally plasticizing lignin without any adhesives or resins. The molded products pressed at 180 °C exhibited a plastic-like gloss on the surface and a high bending strength, 221 MPa, which greatly exceeded that of the conventional plant-based binderless boards. The molded products produced here are a novel form of ideal cellulose nanocomposite, which exploited the inherent compatibility between cellulose microfibrils and matrix substances present in CTMP fragments.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Cellulose Research Studies · Lignin and Wood Chemistry · Nanocomposite Films for Food Packaging
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (21)
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1. Structural studies on the chemical bonds between lignins and carbohydrates in spruce wood10.1007/BF00383454 ↗
2. Interaction between hemicelluloses, lignin and cellulose: structure–property relationships
3. Interactions between wood polymers studied by dynamic FT-IR spectroscopy10.1016/S0032-3861(00)00434-1 ↗
4. Mechanical interaction between cellulose microfibril and matrix substance in wood cell wall determined by X-ray diffraction10.1007/s10086-004-0667-6 ↗
5. Covalent linkages between cellulose and lignin in cell walls of coniferous and nonconiferous woods10.1002/bip.20533 ↗
6. On the role of interface polymers for the mechanics of natural polymeric composites10.1039/b411986j ↗
7. Review of recent research into cellulosic whiskers, their properties and their application in nanocomposite field10.1021/bm0493685 ↗
8. Cellulosic nanocomposites: a review
9. Composites reinforced with cellulose based fibres10.1002/(SICI)1097-4628(19960222)59:8<1329::AID-APP17>3.3.CO;2-5 ↗
10. Bionanocomposites based on poly(3-caprolactone)-grafted cellulose nanocrystals by ring-opening polymerization10.1039/b809212e ↗
11. Surface grafting of microfibrillated cellulose with poly(e-caprolactone) – synthesis and characterization10.1016/j.eurpolymj.2008.06.023 ↗
12. Surface acetylation of bacterial cellulose10.1023/A:1021140726936 ↗
13. Property enhancement of optically transparent bionanofiber composites by acetylation10.1063/1.2403901 ↗
14. Surface modification of bacterial cellulose nanofibers for property enhancement of optically transparent composites: dependence on acetyl-group DS10.1021/bm070113b ↗
15. Optically transparent composites reinforced with plant fiber-based nanofibers10.1007/s00339-005-3316-z ↗
16. Obtaining cellulose nanofibers with a uniform width of 15nm from wood10.1021/bm700624p ↗
17. Binderless composites from pretreated residual softwood10.1002/(SICI)1097-4628(19990919)73:12<2485::AID-APP17>3.0.CO;2-G ↗
18. Self-bonding characteristics of binderless kenaf core composites10.1007/s00226-005-0030-0 ↗
19. Lignin plasticization to improve binderless fiberboard mechanical properties10.1002/pen.20342 ↗
20. Chlorite holocellulose, its fractionation and bearing on summative wood analysis and on studies on the hemicelluloses
21. All-cellulose nanocomposite10.1016/j.polymer.2005.08.040 ↗