A new family of bio-based linear polyesters from oleic acid was developed by a bulk polymerization process. First, efficient chemical pathways were selected to synthesize three monomer derivatives from 1,18-(Z)-octadec-9-enedioic acid, allowing the synthesis of four polyesters that differ by the number of double bonds along the polymer backbone. After the analysis of the structure of the polymers, their thermal properties and their biodegradability were investigated. It was shown that the melting temperature of the polyesters increased with the decrease in the unsaturation content in the repeat units of the polymers and they have very low glass-transition temperatures. A biodegradation process was also highlighted for poly(1,18-(Z)-octadec-9-enylene 1,18-(Z)-octadec-9-enedioate) and poly(1,18-octadecylene 1,18-octadecanedioate). Based on their thermal features, these biodegradable polyesters can represent an alternative of the synthetic polymers derived from petroleum hydrocarbons, such as low-density polyethylene.

中文翻译：

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基于1,18-（Z）-Octadec-9-烯二酸的单体合成直链聚酯及其生物降解性

通过本体聚合工艺开发了一种新的油酸类生物基线性聚酯系列。首先，选择有效的化学途径以从1,18-（Z）-十八烷基-9-烯二酸合成三种单体衍生物，从而可以合成沿聚合物主链的双键数量不同的四种聚酯。在分析了聚合物的结构之后，研究了它们的热性能和生物降解性。结果表明，聚酯的熔融温度随着聚合物重复单元中不饱和含量的降低而增加，并且它们的玻璃化转变温度非常低。聚（1,18-（Z）-octadec-9-enylene 1,18-（Z）-十八烷基-9-烯二酸酯）和聚（1,18-十八碳烯1,18-十八烯二酸酯）。基于它们的热特性，这些可生物降解的聚酯可以代表衍生自石油烃的合成聚合物的替代品，例如低密度聚乙烯。