摘要
研究了聚醚多元醇与顺丁烯二酸酐合成聚醚大单体（乙二醇封端）的反应条件，产物用UV和FT－IR鉴定。将聚醚大单体与苯乙烯共聚成接枝聚醚多元醇，并进行了分离，然后通过FT－IR和1H－NMR表征。考察了不同引发体系对上述共聚反应的影响，发现用过氧化二苯甲酰／二甲基苯胺使共聚反应在较低温度下进行时，可较明显地提高苯乙烯的接枝放率，共聚反应受扩散影响。
The polyol macromers were prepared by esterification reaction of polyol and maleic anhydride under a variety of temperatures and reaction times, and were charactrized by UV and FT-IR. The graft copolymers were synthesized by free radical copolymerization of these macromers and styrene. The products of graft copolymer were separated carefully and characterized by FT-IR and ~1H-NMR. The experimental data showed that the graft efficiency of styrene for these copolymerization systems is appreciably increased with decreasing the temperature. For using a redox system(BPO/DMA) at a low temperature (303K), the graft efficiency of styrene was as high as 0.58 observed.
基金
国家自然科学基金资助项目5870148
