超声条件下GTMAC醚化改性聚乙烯醇的合成及表征

Synthesis and Characterization on Modification for Polyvinyl Alcohol by GTMAC under Ultrasonic Conditions

以实验室制备的缩水甘油基三甲基氯化铵(GTMAC)为醚化剂,超声条件下醚化改性聚乙烯醇(PVA),通过IR对醚化产物阳离子聚乙烯醇进行了结构表征。最佳合成条件为:n(GTMAC)∶n(PVA)=0.018∶1,超声频率50 kHz,反应温度为60℃,反应时间4 h,取代度(DS)=33.77%,季铵盐阳离子聚乙烯醇产率达81.56%。

Laboratory-based preparation of glycidyl trimethylammonium chloride （GTMAC） asetherifying agent, PVA was modified with etherification under ultrasonic conditions. The structure ofcationic polyvinyl alcohol was characterized by IR. The optimum synthesis conditions were： n（GTMAC）∶n （PVA）= 0.018∶1, ultrasonic frequency 50 kHz , reaction temperature is 60℃, reaction time 4 h,the degree of substitution（DS） =33.77%, cationic polyvinyl alcohol yield was 81.56%.