溶剂对等离子体引发的衰减链转移接枝聚合动力学的影响

采用等离子体引发的衰减链转移（DT）接枝聚合法，以丙烯酸（AA）为单体，碘仿为链转移剂，对聚丙烯（PP）薄膜进行表面改性。研究了水和N，N-二甲基甲酰胺（DMF）对等离子体引发聚合及等离子体引发DT聚合动力学的影响。结果表明，采用等离子体引发的方法可以实现DT可控 活性聚合，DMF介质中的可控性优于水介质，等离子体引发DT聚合的溶剂效应明显减弱，接枝量与转化率成正比关系并与FT-IR、接触角的表征结果相符。

Effects of Solvents on Kinetic of Degenerative Transfer Graft Polymerization Initiated by Plasma

Polypropylene (PP) film was modified by plasma initiated degenerative transfer (DT) graft polymerization with acrylic acid (AA) as monomer and iodoform as DT agent. Effects of both water and N, N-dimethylformamide (DMF) on the kinetic of plasma initiated polymerization and its DT polymerization were investigated. Results showed that the plasma initiated DT polymerization performed following a controlled living mechanism. DMF was indicated an appropriate solvent for controlling molecular weight and PDI relative to water in the plasma initiated DT polymerization. Less solvent effect was shown in the polymerization after introducing iodoform. For modified surfaces, graft amounts would proportionally increase with conversion, and was confirmed by results of FT-IR and contact angle.