侧链为亚乙氧基结构的EVOH梳型聚合物的合成  

Synthesis and Characterization of EVOH Hydroxyl Comb Polymer

作　　者：代丽君[1] 

机构地区：[1]哈尔滨商业大学商检学院,黑龙江哈尔滨150076

出　　处：《化学与粘合》2005年第3期177-179,共3页Chemistry and Adhesion

基　　金：黑龙江省青年基金项目 (QC0 4C0 8)资助

摘　　要：以乙烯-乙烯醇共聚物(EVOH)为原料,制备了一种主链为疏水的聚乙烯链段,侧链具有亚乙氧基结构的多羟基梳形聚合物,用元素分析法、凝胶渗透色谱法、核磁共振谱法对其进行了结构表征;用热重分析法和示差扫描量热法对其热学性能进行了表征。结果表明,接枝后产物的玻璃化转变温度在-52～-40℃之间,熔点在55～60℃之间,由于侧链的引入破坏了EVOH的结晶,因此梳形聚合物的热分解温度比EVOH降低了约20℃。Poly (ethylene-co-vinyl alcohol)(EVOH)hydroxyls comb polymer was prepared from alcohol and alkylogen.The main chain of the comb polymer was hydrophobic polythene segments;and the side chain was polyalkylene oxide.The graft copolymers were characterized with GPC,elemental analysis and ~1 H-NMR.Thermal properties were examined by DSC and TG.The results showed that the glass transition temperature (Tg) of the comb polymer were.52～-40℃ and the melt temperature (Tm) were 55～60℃; The thermal stability of the comb polymer was lower than EVOH because the crystallization of EVOH was destroyed by the side chain.

关 键 词：EVOH 乙氧基 梳型聚合物 侧链 乙烯-乙烯醇共聚物 凝胶渗透色谱法 示差扫描量热法 玻璃化转变温度 梳形聚合物 合成 核磁共振谱法 元素分析法 热重分析法 热分解温度 聚乙烯链 结构表征 热学性能 多羟基 600 20℃ 主链 

分 类 号：TQ325.1[化学工程—合成树脂塑料工业] TB484.3[一般工业技术—包装工程]