文档介绍：
仿生矿化纳米纤维素烷基化增强聚乳酸复
合材料的研究#
王璇,孙海波,张力平**
5
10
15
20
25
30
35
40
(北京林业大学材料科学与技术学院,北京 100083)
摘要:为改善纳米纤维素与聚乳酸的相容性,采用 KH-570 硅烷偶联剂改性仿生矿化后的纳
米纤维素。利用原子力显微镜表征改性纳米纤维素的微观形貌, 对改性纳米纤维素-聚乳酸
复合材料的红外特性、抗张性能、紫外透过性、元素分布、热失重性能进行了测试表征。结
果表明:硅烷改性仿生矿化后的纳米纤维素仍保持着棒状结构,改性纳米纤维素大大提高了
聚乳酸的机械性能,同时复合材料的抗紫外性能、热稳定性均有一定程度的提高,Ca 元素、
P 元素和 Si 元素在聚乳酸基体中分散均匀。该新型复合材料有一系列良好的性能,在组织
工程等领域有潜在应用价值。
关键词:复合材料;纳米纤维素;仿生矿化;烷基化
中图分类号:TQ35
Study on the alkylation of biomimetic mineralization
cellulose nanofibrils reinforced poly (lactic acid) composites
WANG Xuan, SUN Haibo, ZHANG Liping
(College of Material Science and Technology, Beijing Forestry University, Beijing 100083)
Abstract: In order to improve patibility between cellulose nanofibrils (CNF) and poly
(lactic acid) (PLA), CNF were modified by silane coupling reagent (KH-570) after
biomineralization (F). AFM was used to characterize the morphology of F
(F/HA), the FT-IR characteristic, tensile property, ultraviolet through property, element
distribution and heat performance of F/HA/posites had been tested. The results
indicated that F/HA still keep the original morphology, and F/HA had greatly
improved the mechanical property of PLA matrix, meanwhile, the property of ultraviolet
resistance and heat stability also improved to some extent, element C, P and Si dispersed evenly
in the PLA matrix. The new posites, with a series of good