期刊论文

Luo, Weihua

中文

高分子材料科学与工程

1000-7555

2014

30

9

145-149

10.16865/j.cnki.1000-7555.2014.09.030

国家“十一五”科技支撑计划(2008BADA9B0102) 湖南省教育厅重点项目(11A029)

本校为第一且通讯机构

将木纤维(WF)经马来酸酐酯化改性后,再以过氧化二苯甲酰(BPO)为引发剂,苯乙烯(St)与丙烯酸正丁酯(BA)为单体,在甲苯溶剂中对其进行接枝改性,然后使用密炼机将改性木纤维(MWF)与聚己内酯(PCL)复合制备复合材料。通过红外光谱、力学测试、广角X射线衍射、差示扫描量热-热重同步热分析和扫描电子显微镜研究了MWF和复合材料的结构与性能。结果表明,MWF成功地接枝上了疏水单体,当单体St与BA的摩尔比1.5∶1时,接枝率达到最大值,同时表现出较好的疏水性能;与未改性WF/PCL(20/80)复合材料相比,MWF/PCL(20/80)复合材料的拉伸强度最大增加了22%,断裂延伸率提高了718%;WF经接枝改性后,其复合材料中PCL相的晶...

Wood fiber (WF) was esterified with maleic anhydride,then was modified by grafting copolymerization using benzoyl peroxide (BPO) as initiator,styrene (St) and n-butylacrylate (BA) as monomers. The modified wood fiber (MWF) and polycaprolactone (PCL) were compounded to prepare composites using a mixing chamber. The structure and properties of MWF and MWF/PCL composites were analyzed by FT-IR, mechanical testing, WAXD, TG-DSC and SEM. The results show that hydrophobic monomers were grafted on MWFs successfully. The graft degree of hydrophobic monomers reaches the maximum when the mole ratio of S...