含两亲性PEO-b-PBA增容剂的吸水膨胀橡胶的制备及性能  

PREPARATION AND PROPERTIES OF A WATER-SWELLABLE RUBBER COMPATIBILIZED BY AMPHIPHILIC BLOCK POLYMER PEO-b-PBA

作　　者：王彩旗[1] 董宇平[2] 张国[1] 陈欣方[1] 谭惠民[2] 

机构地区：[1]吉林大学材料科学系,吉林长春130023 [2]北京理工大学化工与材料学院,北京100081

出　　处：《高分子材料科学与工程》2003年第4期200-203,共4页Polymer Materials Science & Engineering

摘　　要：以天然橡胶为基体 ,微米级交联聚丙烯酸钠为高吸水性树脂 ,两亲性嵌段共聚物聚氧化乙烯 - b-聚丙烯酸丁酯 (PEO- b- PBA)为增容剂 ,聚乙二醇为吸水促进剂 ,制备了嵌段共聚物增容型吸水膨胀橡胶。通过扫描电子显微镜观察了其微观相态结构 ,适量加入两亲性嵌段共聚物 PEO- b- PBA可以改善 CSP树脂与 NR的相容性。并研究了质量吸水率 ,体积膨胀率以及吸水速率与各组分含量之间的关系 ,对体系的力学性能进行了研究 。A water-swellable rubber has been prepared by blending with naturerubber(NR) as matrix, cross-linked sodium polyacrylate(CSP) as high-absorbent water resin the amphiphilic block copolymer poly(ethylene oxide)-b-poly(butylacrylate)(PEO-b-PBA) as compatibilizer and the poly(ethylene glycol)(PEG) as absorbent accelerant. The preparation process was described. The microphase structure of WSR was characterized by SEM photograph. The dependence of the degree of the water-absorbing and the water-swelling, the water-absorbing and water-swelling rate on CSP, and PEO-b-PBA contents was investigated. The mechanical properties of WSR was also investigated. The results show that the adding of PEO-b-PBA improves the compatibility of the WSR. The compatibilizing mechanism of PEO-b-PBA on WSR was studied.

关 键 词：两亲性 PEO-b-PBA 增容剂 吸水膨胀橡胶 制备 性能 聚氧化乙烯-b-聚丙烯酸丁酯 

分 类 号：TQ333.99[化学工程—橡胶工业] TQ330.387