聚苯乙烯微球的制备及氯乙酰化改性
Preparation and chloroacetylation modification of polystyrene microspheres
杨茜 1王珏 1于佳 1章亚东1
作者信息
- 1. 郑州大学 化工学院,河南 郑州 450001;郑州大学 济源研究院,河南 济源 459000
- 折叠
摘要
通过悬浮聚合法制备交联聚苯乙烯微球(PS)基体,在其表面进行Friedel-Crafts反应,得到氯乙酰化聚苯乙烯微球(PS-Cl).探究溶剂类型、酰化试剂用量、催化剂用量、反应时间和溶剂用量对PS-Cl担载量及氯乙酰氯转化率的影响.采用红外(FTIR)、扫描电镜(SEM)、粒度分析仪(PSD)对产物进行了表征,并探究产物的热稳定性能.结果表明,聚苯乙烯微球的平均粒径为63.24 μm;氯乙酰化聚苯乙烯微球的反应条件在PS、酰化试剂(Reg)和催化剂AlCl3 摩尔比1∶1.2∶1.2(以PS微球1.00 g计)、反应时间4h、溶剂二氯甲烷20 mL下得到PS-Cl微球的最高担载量为4.350 6 mmol/g,氯乙酰氯转化率为57.13%.
Abstract
The crosslinked polystyrene microspheres(PS)matrix was prepared by suspension polymeriza-tion,and chloroacetylated polystyrene microspheres(PS-Cl)were obtained by Friedel-Crafts reaction on the surface.The effects of solvent type,acylation reagent amount,catalyst amount,reaction time and sol-vent amount on PS-Cl load and chloroacetyl chloride coversion rate were investigated.The products were characterized by FTIR,SEM and PSD,and the thermal stability of the products was investigated.The re-sults showed that the average particle size of polystyrene microspheres were 63.24 μm.The highest load-ing capacity of PS-Cl microspheres was 4.350 6 mmol/g and the conversion rate of chloroacetyl chloride was57.13%under the reaction conditions of PS,acylation reagent(Reg)and catalyst AlCl3 molar ratio of1∶1.2∶1.2(1.00 g of PS microspheres),reaction time of 4 h and solvent dichloromethane of 20 mL.
关键词
聚苯乙烯/功能化改性/Friedel-Crafts反应/氯乙酰化Key words
polystyrene/functionalised modification/Friedel-Crafts reaction/chloroacetylation引用本文复制引用
基金项目
河南省科技攻关计划(232102310362)
出版年
2024
NETL
NSTL
万方数据