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Candida antarctica Lipase B Catalyzed Synthesis of Poly(butylene succinate): Shorter Chain Building Blocks Also Work

机译:Candida抗野生脂肪酶B催化合成聚(丁烯琥珀酸):较短的链积木也有效

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Lipase has been extensively used to convert aliphatic diacid and diol to biodegradable polyesters. In general, lipase catalysts show higher polymerization activity towards long chain substrates. Thus far, efforts to copolymerize short chain (≤ four carbons) diacid and diol monomers have only led to the formation of low molecular weight products. Herein we report the synthesis of high molecular weight (M_w ≥ 35,000) poly(butylenes succinate) by using diethyl succinate, instead of succinic acid, as comonomer to avoid substrate phase separation, and by carrying out the copolymerization reaction at ≥ 95°C to prevent the product from precipitating out of the reaction solution.
机译:脂肪酶已被广泛地用于将脂族二酸和二醇转化为可生物降解的聚酯。通常,脂肪酶催化剂显示出较长链基材的聚合活性。到目前为止,共聚短链(≤4个碳)二酸和二醇单体的努力仅导致低分子量产物的形成。在此,通过使用二乙酯,代替琥珀酸作为共聚单体来报告高分子量(M_W≥35,000)聚(丁烯酸琥珀酸酯)的合成,以避免基板相分离,并通过在≥95℃下进行共聚反应来进行≥95℃防止产物沉淀出反应溶液。

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