论文部分内容阅读
在微波辐射和引发剂FAS-KPS引发条件下,合成了剑麻-丙烯酸甲酯-丙烯酸(SF-g-MA/AA)、剑麻-丙烯酸甲酯-醋酸乙烯酯(SF-g-MA/VA)和剑麻-丙烯酸甲酯-丙烯酸丁酯(SF-g-MA/BuA)3种接枝共聚物,并用扫描电镜(SEM)表征了SF和3种接枝共聚物的形貌特征。结果表明:在3类接枝共聚物中,SF-MA-VA接枝共聚物具有最大接枝率。SEM结果显示,乙烯类单体与SF接枝共聚,可以改变SF的表面结构,将光滑的表面变换成粗糙的表面。热重和X-射线衍射仪分析结果说明:接枝共聚能延迟SF第一阶段的分解,提高纤维的热稳定性,但也降低了SF结晶度及结晶度指数的大小。
Under the conditions of microwave radiation and initiator FAS-KPS, SF-g-MA / AA and SF-g-MA / VA) and sisal - methyl acrylate - butyl acrylate (SF-g-MA / BuA) were synthesized and characterized by scanning electron microscopy (SEM). The results showed that SF-MA-VA graft copolymer had the highest grafting rate among the three graft copolymers. The SEM results showed that the graft copolymerization of vinyl monomer with SF could change the surface structure of SF and transform the smooth surface into a rough surface. Thermogravimetric analysis and X-ray diffractometer results show that graft copolymerization can delay the decomposition of the first phase of SF, improve the thermal stability of the fiber, but also reduce the SF crystallinity and crystallinity index.