摘要
用对二氯甲基苯作为后交联剂,与聚丙烯接枝苯乙烯-二乙烯苯纤维进行后交联反应,制备出具有高比表面积的后交联纤维。对影响反应的各种因素:反应温度、时间、催化剂和配料比进行了研究,得出最优化的制备条件。并且在静态条件下,研究了水溶液中后交联纤维吸附吡啶的热力学特性,测定了不同温度下的吸附等温线。结果表明,后交联纤维吸附吡啶符合Freundlich模型,表现为放热的物理吸附过程,而且是自发进行的。
The post-crosslinking fiber was prepared by cross-linking PP-ST-DVB fiber with p-xylylenedichloride according to the friedel-crafts reaction and was given a series of synthesis tests. The effects of several important factors including reaction temperature, time, catalyst, and material ratio on the friedel-crafts reaction were investigated in detail and the optimal synthesis conditions of post-crosslinking fiber were obtained. Then, the post-crosslinking fiber was given a series of static adsorption tests for pyridine. The results showed that the post-crosslinking fiber has excellent adsorption capacities for pyridine and the adsorption equilibrium data can be well fitted by Freundlich model. The thermodynamic studies supported the conclusion that the mechanism of adsorption for pyridine on the post-crosslinking fiber is physical adsorption and lower temperature is favourable to the exothermic physisorption process.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2007年第3期505-508,共4页
Journal of Functional Materials
基金
国家自然科学基金资助项目(20574063)
关键词
后交联纤维
后交联反应
比表面积
吸附
吡啶
post-crosslinking fiber
post-crosslinking reaction
specific surface area
adsorption
pyridine
