铈盐引发阔叶浆与GMA接枝共聚的研究  

Graft Copolymerization of Glycidyl Methacrylate onto Hardwood Pulp Initiated by Ammonium Cerium (Ⅳ) Nitrate

作　　者：黄军[1] 翟华敏[1] 

机构地区：[1]南京林业大学化学工程学院,江苏南京210037

出　　处：《林产化学与工业》2008年第1期39-43,共5页Chemistry and Industry of Forest Products

基　　金：2005江苏省高等学校研究生创新基金(无编号)

摘　　要：研究了铈盐引发体系引发漂白化学桉木浆与甲基丙烯酸缩水甘油酯(GMA)的接枝共聚。用接枝率、环氧基含量和环氧基水解率评价了体系pH值、反应温度和时间、引发剂浓度和单体浓度对接枝效果的影响,并用红外光谱对接枝产物进行了分析鉴定。结果表明:控制体系pH值在1.3,适当提高反应温度、延长反应时间、增加引发剂浓度和单体浓度,都能提高接枝率;在适当的条件下,可合成接枝率高达100%、环氧基含量达1.4～2.7mmol/g的接枝纤维;与此同时接枝纤维也存在一定程度的环氧基开环水解反应。Graft copolymerizaton of bleached eucalyptus pulp with glycidyl methacrylate （GMA） using a ceric salt initiator system was studied in detail. Epoxy activated grafted fibers with a grafting rate up to 100 % and epoxy group content of 1.4-2.7 mmol/g were synthesized successfully. The graft copolymerization under different conditions of pH value, reaction temperature and time, initiator and monomer concentration were characterized by grafting rate, epoxy group content and its hydrolysis rate, and using FT-IR to identify the grafted product. Results showed that proper increases of the reaction temperature and time, initiator and monomer concentrations at pH value 1.3 are beneficial to the graft copolymerizaton although the hydrolysis of its epoxy group is occurred to a certain extent.

关 键 词：铈盐 桉木浆 甲基丙烯酸缩水甘油酯 接枝共聚 

分 类 号：TQ34[化学工程—化纤工业]