摘要
首先通过对纤维素微晶酸解得到纤维素纳米晶体(CNC),然后用其对聚氨酯(PU)进行增强改性,通过溶液法制备了形状记忆CNC/PU复合材料。通过透射电子显微镜观测了CNC的尺寸及分散情况,对CNC/PU复合材料进行了红外、力学性能、动态力学性能和形状记忆性能分析,并用扫描电子显微镜分析了复合材料的断面。结果表明,CNC在PU基体中分散良好,CNC的加入增加了与PU之间的相互作用,增强了PU的力学性能。CNC/PU复合材料的形状记忆性能优异。
Cellulose nanocrystals （CNCs） which were produced from commercial microcrystalline or-cellulose by acid hydrolysis were used to reinforce polyurethane （PU）, and shape memory CNCs/PU composites were prepared by solution method. The sizes and dispersion of CNCs were observed by transmission electron microscopy. The mechanical properties, dynamic mechanical properties and shape memory properties of the CNCs/PU composites were investigated. The fracture surfaces of CNCs/PU composites were investigated dispersed in the PU matrix by scanning electron microscope. The results showed that CNCs were well and it enhanced the interaction with PU and the mechanical properties of the composites. The CNCs/PU composite showed excellent shape memory properties.
出处
《塑料工业》
CAS
CSCD
北大核心
2015年第8期115-118,123,共5页
China Plastics Industry
基金
四川省应用基础研究计划资助项目(2013JY0017)
高分子材料工程国家重点实验室自主课题经费资助(sklpme2014-2-03)
