摘要
研究了在超声波辐照作用下聚丁二烯(PB)在环已烷溶液中的降解及与丙烯酸(AA)的共疑反应。结果表明,PB的超声降解符合一般聚合物的力降解规律,降解动力学方程为(?)_t=((?)_0-(?)_∞)exp(-kt)+(?)_∞,k=33.33×10^(-5)(s)。通过IR、NMR研究了所得共聚物的结构,证明所得产物主要为嵌段共聚物。用SEM和IR研究了其聚物对SBR/CaCO_3体系的偶联作用,分析了经共聚物处理的CaCO_3的表面性质和SBR/CaCO_3的断面形貌,证实SBR/CaCO_3体系的相容性及力学性能得到明显的改善。
The ultrasonic degradation of polybutadiene (PB) and block copolymerization of PB with acrylic acid(AA)in cyclohexane solution were studied.The results show that the chain-scissionreaction of PB follows the equation; Mt = (M.-M )e~'+M, where k = 33.33×10-5 s-1. The structure of the copolymer was identified by IR and NMR, it is a block one. The mechanism of the coupling effect of the copolymer (PB-b-AA) prepared in CaCO3/SBR system was studied also by means of SEM and IR. The surface properties of CaCO3 treated with the copolymer and the morphology of the fracture surface of valcanized SBR/CaCO3 were examined. The compatibility and mechanical properties of SBR/CaCO3 system get improved quite a lot.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1991年第1期96-100,共5页
Polymer Materials Science & Engineering
关键词
聚丁二烯
丙烯酸
超声波辐照
ultrasonic degradation, polybutadiene (PB) , acrylic acid (AA).
