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New scope for synthesis of divinyl ether and maleic anhydride copolymer with narrow molecular mass distribution

机译：窄分子量分布的二乙烯基醚和马来酸酐共聚物的合成新领域

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摘要

The alternating copolymer of divinyl ether and maleic anhydride (DIVEMA) possesses diverse biological activity and uses for production of drug delivery systems. DIVEMA's biological effects are determined by molecular mass, therefore it is necessary to have information about copolymer molecular mass and its distribution. A direct method for gel permeation chromatography analysis of DIVEMA molecular mass characteristics in aqua solution without any preliminary modification was developed. The effect of a number of factors (the concentration of monomers and their ratios, the concentration of initiator, the nature of the solvents) on DIVEMA's solution properties and molecular mass distribution was studied by gel permeation chromatography and viscometry. The approach to synthesis of DIVEMA with narrow molecular mass distribution was designed. The substantial influence of water on DIVEMA molecular mass characteristics was determined. The proposal was made that water may play a part in the formation of charge-transfer complexes playing a significant role in copolymerization.
机译：二乙烯基醚和马来酸酐的交替共聚物（DIVEMA）具有多种生物活性，可用于生产药物递送系统。 DIVEMA的生物学效应取决于分子质量，因此有必要了解有关共聚物分子质量及其分布的信息。开发了一种直接进行凝胶渗透色谱分析的DIVEMA水溶液特性的方法，无需进行任何初步修饰。通过凝胶渗透色谱法和粘度测定法研究了许多因素（单体的浓度及其比例，引发剂的浓度，溶剂的性质）对DIVEMA溶液性质和分子量分布的影响。设计了窄分子量分布的DIVEMA的合成方法。确定了水对DIVEMA分子量特性的重大影响。有人提出水可能在电荷转移络合物的形成中起重要作用，而电荷转移络合物在共聚中起着重要作用。

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