期刊
BIORESOURCES
卷 10, 期 1, 页码 432-447出版社
NORTH CAROLINA STATE UNIV DEPT WOOD & PAPER SCI
关键词
Pulp fibers; Lignophenols; Poly-(3-hydroxybutyrate); Polypropylene; Mechanical properties
资金
- National Natural Science Foundation of China [51203075]
- Natural Science Foundation of JiangSu Province [BK2012420]
- Scientific Research Staring Foundation for the Returned Overseas Chinese Scholars, Ministry of Education of China (46th)
- NanJing Forestry University Young Talent Fundings [163105701, 163105017]
The effects of lignophenols and pulp fibers as reinforcing elements in biocomposites were studied with poly-(3-hydroxybutyrate) (PHB) biopolymers and polystyrene (PS) matrix materials. Lignophenols and (NH2(CH2)(3)Si(OC2H5)(3)) were compared as plasticizing or compatibilizing additives in tests of composite properties. PHB and PP were blended with pulp fiber cellulose and lignophenol by torque rheometer, and the test specimens were processed via injection moulding. Various testing methods, including tensile and impact tests, SEM, XRD, TGA, and ART-FTIR were used to investigate the properties of the composites. PHB and PP-cellulose fiber composites with strong mechanical properties could be created by using a torque rheometer as a mixer at 190 degrees C with very short mixing times. The (NH2(CH2)(3)Si(OC2H5)(3)) was found to improve the mechanical features of the PP, but not very obviously for both tensile and impact strengths of PHB. However, the lignophenols positively affected the PHB-pulp fiber composites. In summary, a novel method has been demonstrated for creating biodegradable composites with pulp fibers in the absence of a coupling agent, and lignophenols may be applicable as an additive in the cases described in this study.
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