反应挤出原位阴离子聚合尼龙6/石墨烯复合微球的连续制备与表征  

Continuous Preparation and Characterization of Polyamide 6/Graphene Microsphere via In Situ Anionic Polymerization by Reactive Extrusion

作　　者：闫东广[1] 王春亭 刘晓栋 宋玮琦 李照磊[1] Dongguang Yan;Chunting Wang;Xiaodong Liu;Weiqi Song;Zhaolei Li(School of Material Science and Engineering,Jiangsu University of Science and Technology,Zhenjiang 212000,China)

机构地区：[1]江苏科技大学材料科学与工程学院,江苏镇江212000

出　　处：《高分子材料科学与工程》2018年第12期101-105,共5页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(51503088);中国博士后科学基金(2016M591796)

摘　　要：以己内酰胺(CL)、苯乙烯(St)及氧化石墨烯(GO)为主要原料,首先在熔融的CL中经自由基聚合得到聚苯乙烯(PS)/CL/GO混合熔体,然后在双螺杆挤出机中引发CL阴离子聚合生成尼龙6(PA6),获得PS为连续相、GO选择性分布于球状PA6分散相的PA6/PS/GO三元混合物,最后去除PS相制备PA6/GO复合微球。采用扫描电镜、透射电镜、热失重及差示扫描量热等方法,研究了GO在三元混合物中的选择分布、PA6/GO复合微球的结构及耐热性。结果表明,在三元混合物中GO选择性分布于PA6相中;随着GO含量增加,PA6/GO复合微球的直径减小;与纯PA6微球相比,PA6/GO复合微球具有更高的热稳定性。In this study ,ε- caprolactam,styrene and graphene were used as materials to prepare the polyam-ide 6 / graphene microspheres.Firstly,free radical polymerization of styrene was first carried out in moltenε- caprolactam,and then an anionic polymerization of ε- caprolactam was preceded in the presence of the catalyst and activator in a twin screw extruder to form polyamide 6 / polystyrene / graphene composites.At last,the above mixtures were washed with tetrahydrofuran as solvent to etch the PS phase,and polyamide 6 / graphene microspheres was obtained.SEM,TEM,TGA and DSC were used to characterize the microspheres.The re sults show that graphene is selectively dispersed in the polyamide 6phase of the polyamide 6 / polystyrene / graphene composites,and the polyamide 6 / graphene microspheres have a high thermal resistant.

关 键 词：尼龙6 聚苯乙烯 石墨烯 反应挤出 微球 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业]