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首页> 外文期刊>Journal of Applied Polymer Science >Polymerization of epsilon-caprolactone with maleic anhydride: Synthesis and characterization
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Polymerization of epsilon-caprolactone with maleic anhydride: Synthesis and characterization

机译：ε-己内酯与马来酸酐的聚合：合成与表征

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High-molecular-weight polymers of epsilon-caprolactone (CL) and maleic anhydride (MA) with anhydride group content of about 1% wt have been synthesized and studied. The polymerization reaction was carried out in bulk under nitrogen atmosphere. Stannous octoate (Sn(oct)(2)), and 2,2'-azobisisobutyronitrile (AIBN) were used as a catalyst and an initiator, respectively. A two-level design of experiments was used to study the effect of various conditions on the characteristics of the copolymer. Reaction time, temperature, and concentration ratio of various reactants (two monomers, monomer to catalyst, and monomer to initiator) were the independent variables used, and the dependent variables included the molecular weight and the anhydride content in the polymer. Nuclear magnetic resonance (NMR) studies indicate that the succinic anhydride units were incorporated individually either to the polymer chain end or backbone. Anhydride content in the polymer and gel permeation chromatograph (GPC) studies indicate that the maleic anhydride acts as the true initiating species rather than as a comonomer in the system. (C) 2000 John Wiley & Sons, Inc. [References: 30]
机译：合成并研究了酸酐基团含量约为1％wt的ε-己内酯（CL）和马来酸酐（MA）的高分子量聚合物。聚合反应在氮气气氛下本体进行。辛酸亚锡（Sn（oct）（2））和2,2'-偶氮二异丁腈（AIBN）分别用作催化剂和引发剂。使用两级实验设计来研究各种条件对共聚物特性的影响。反应时间，温度和各种反应物（两种单体，单体与催化剂，单体与引发剂）的浓度比是使用的自变量，因变量包括聚合物中的分子量和酸酐含量。核磁共振（NMR）研究表明，琥珀酸酐单元是单独引入到聚合物链末端或主链上的。聚合物和凝胶渗透色谱仪（GPC）中的酸酐含量表明，马来酸酐在系统中起真正的引发作用，而不是作为共聚单体。 （C）2000 John Wiley＆Sons，Inc. [参考：30]

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