Synthesis of Fatty Acid-Based Polyesters and Their Blends with Poly(l-lactide) as a Way To Tailor PLLA Toughness
Synthesis of Fatty Acid-Based Polyesters and Their Blends with Poly(l-lactide) as a Way To Tailor PLLA Toughness
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DOI：
10.1021/sc500648g
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发表时间：
2015-02
影响因子：
8.4
通讯作者：
T. Lebarbé;É. Grau;Benoît Gadenne;C. Alfos;H. Cramail
中科院分区：
文献类型：
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作者：
T. Lebarbé;É. Grau;Benoît Gadenne;C. Alfos;H. Cramail
聚乳酸（PLA）是目前市场上最成熟的生物基和生物可降解塑料之一。尽管其机械性能与一些主流的石油基热塑性塑料（例如PS）相当，但PLA固有的脆性和热敏性是其全面工业发展的问题。在这项研究中，我们研究了熔融共混PLLA（聚-L-丙交酯）与脂肪酸基柔性聚酯作为一种有效的方式来定制PLLA韧性。为此，利用可从植物油中获得的大量生物基结构单元，开发了一系列脂肪族聚酯。将如此形成的聚酯与PLLA熔融共混导致了改进的性能，其可以通过改变植物基聚酯添加剂的结构和性能来精细地定制。
Polylactide (PLA) is one of the most mature biobased and biocompostable plastics currently in the market. Despite its mechanical properties comparable to the ones of some mainstream petroleum-based thermoplastics (PS, for instance), PLA inherent brittleness and heat sensitivity are issues for its full industrial development. In this study, we investigated the melt-blending of PLLA (poly-l-lactide) with fatty acid-based flexible polyesters as an efficient way to tailor PLLA toughness. To that aim, a set of aliphatic polyesters has been developed by taking benefit of the large range of biobased building blocks that can be obtained from plant oils. Melt-blending of the so-formed polyesters with PLLA resulted in improved properties that can be finely tailored by varying the structure and the properties of the plant-based polyester additives.