【摘要】 研究直接以聚酯为原料,合成聚酯-聚醚多嵌段共聚物。研究了反应机理、链段结构对反应的影响以及由此法制备的多嵌段共聚物的链段序列结构。实验结果表明,链段相容性对聚合物法的影响至为重要,链段相容性不仅决定了所得嵌段共聚物的组成均一性,而且还决定了某一链段结构的多嵌段共聚物能否用聚合物法制备。更多还原

【Abstract】 A polymeric method was explored for the preparation of polyester-polyether multiblock copolymers using polyesters and polyethers as starting materials. The mechanism of the reaction and the effect of the segment structure on it, the segment sequence of the block copolymers prepared have been studied. It has been shown that to the polymeric method the degree of compatibility between starting polyester and poly ethers is of paramount importance which determines not only the compositional homogeneity of the block copolymers formed but also the success of the polymeric method to get the block copolymers of the expected structure.更多还原