固相法微晶纤维素接枝甲基丙烯酸甲酯共聚物的制备与表征  

Preparation and characterization of microcrystalline cellulose-g-methyl methacrylate by solid-state method

作　　者：李雄辉[1] 古菊[1] 谢东[1] 陆合承[1] 罗远芳[1] 贾德民[1] 

机构地区：[1]华南理工大学 材料科学与工程学院 广东省高性能与功能高分子材料重点实验室,广东广州510640

出　　处：《弹性体》2008年第5期1-5,共5页China Elastomerics

基　　金：国家自然科学基金资助项目(50573021);广东省自然科学基金团队资助项目(39172)

摘　　要：以过硫酸铵为引发剂,在少量水存在下,研究了微晶纤维素(MCC)与甲基丙烯酸甲酯(MMA)接枝共聚的反应规律。考察了含水量、反应时间与温度、MMA单体和引发剂用量等因素对接枝共聚反应的影响。实验结果表明,体系含水质量分数为50%左右,MMA用量为MCC质量的20%,过硫酸铵用量为MCC质量的10%,反应温度在80℃,反应时间为40min左右,可得到接枝率和接枝效率均较高的接枝共聚物。通过红外光谱(FTIR)、热重分析法(TGA)以及X射线衍射法(XRD)对合成的接枝共聚物进行了表征。This paper studied on reaction rule between microcrystalline cellulose and methyl methacrylate＇s graft eopolymerization by using APS as initiator. The effects of water content, reaction time, reaction temperature, contents of the MMA monomer and the initiator on the graft copolymerization were investigated. It is showed that graft copolymer with higher grafting ratio and grafting efficiency was obtained when the mass fraction of water in reaction system is about 50%, MMA mass is 20% of corn microcrystalline cellulose mass,APS mass is 10% of mierocrystalline cellulose mass,the reaction temperature is 80℃ and the reaction time is about 40 min. The graft copolymer is characterized through FTIR,TGA and XRD.

关 键 词：微晶纤维素 固相法 接枝共聚 甲基丙烯酸甲酯 

分 类 号：TQ316.342[化学工程—高聚物工业] O636.11[理学—高分子化学]