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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 degradation of polybutadiene (PB) in cyclohexane solution and the suspicious reaction with acrylic acid (AA) under ultrasonic irradiation were studied. The results showed that the ultrasonic degradation of PB was in accordance with the law of force degradation of general polymers. The kinetic equation of degradation was (?) _ T = ((?) _ 0 - (?) _ ∞) exp (-kt) + (?) _ k = 33.33 × 10 ~ (-5) (s). The structure of the obtained copolymer was investigated by IR, NMR and it was confirmed that the resulting product was mainly a block copolymer. The coupling effects of polymer on SBR / CaCO_3 system were studied by SEM and IR. The surface properties of SBR / CaCO_3 treated by copolymer and the cross-sectional morphology of SBR / CaCO_3 were analyzed to confirm the compatibility and mechanics of SBR / CaCO_3 system Performance has been significantly improved.