双单体固相接枝制备亲水性PP  

PREPARATION OF HYDROPHILIC PP WITH DUAL MONOMER SOLID PHASE GRAFTING

作　　者：姚瑜[1] 张军[1] 王晓琳[2] 蒋姗[1] 温建志 

机构地区：[1]南京工业大学材料科学与工程学院,210009 [2]清华大学化学工程系,北京100084 [3]山东招远膜天集团有限公司,265400

出　　处：《现代塑料加工应用》2005年第3期1-4,共4页Modern Plastics Processing and Applications

基　　金：国家"863"资助项目(编号2002AA328020)。

摘　　要：研究了以苯乙烯(St)为共聚单体、聚丙烯(PP)固相接枝丙烯酸(AA)的反应工艺。探讨了反应时间、温度、共聚单体用量及引发剂用量等因素对接枝反应的影响。通过FTIR分析证实,AA和St确实接枝到PP链上形成PP-g-(St-AA)接枝物,并采用水接触角方法表征了接枝物的亲水性能。结果表明,当反应温度为120℃、反应时间为90min,PP∶AA∶St∶BPO(过氧化苯甲酰)质量比为100.0∶10.0∶2.0∶0.4时,可获得AA最大接枝率为4.46%。与相同试验条件下,未加入St的PP固相接枝AA体系相比,提高了2.32%,水接触角由81.3°减小到76.4°,亲水性能得到进一步改善。Polypropylene (PP) was modified by solid-phase graft copolymerization with acrylic acid (AA), using styrene (St) as the co-monomer. Effects of various factors such as concentrations of co-monomer and initiator, reaction time and temperature, on grafting reaction were investigated. It was proved by FTIR that AA and St were actually grafted onto the PP backbone. The surface hydrophilicity of grafted PP was measured by a static contact angel measurement. As a result, the maximum graft degree of acrylic acid was achieved as 4.46% when the reaction was operated under 120℃, for 90min with PP∶AA∶St∶BPO=100∶10∶2∶0.4(mass ratio), which increased 2.32% compared with the same condition without St. The contact angle with water decreased from 81.3°(no St added) to 76.4°, indicating an enhanced hydrophilicity for the grafted PP.

关 键 词：固相接枝 PP 双单体 制备 FTIR分析 过氧化苯甲酰 反应时间 亲水性能 水接触角 共聚单体 反应工艺 接枝反应 单体用量 反应温度 试验条件 接枝物 AA 苯乙烯 丙烯酸 聚丙烯 引发剂 St 20℃ 质量比 BPO 接枝率 相比 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业] TS653.6[轻工技术与工程]