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Ductile gas barrier poly(ester–amide)s derived from glycolide
Polymer Chemistry ( IF 4.1 ) Pub Date : 2022-06-23 , DOI: 10.1039/d2py00479h Yoon-Jung Jang 1 , Leire Sangroniz 1 , Marc A. Hillmyer 1
Polymer Chemistry ( IF 4.1 ) Pub Date : 2022-06-23 , DOI: 10.1039/d2py00479h Yoon-Jung Jang 1 , Leire Sangroniz 1 , Marc A. Hillmyer 1
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Sustainable gas barrier materials, such as polyglycolide, poly(L-lactide), and poly(ethylene 2,5-furandicarboxylate) are important alternatives to traditional plastics used for packaging where low gas permeability is beneficial. However, high degrees of crystallinity in these materials can lead to undesirably low material toughness. We report poly(ester–amide)s derived from glycolide and diamines exhibiting both high toughness and desirable gas barrier properties. These sustainable poly(ester–amide)s were synthesized from glycolide-derived diamidodiols and diacids. To understand the structure–property relationships of the poly(ester–amide)s, polymers with different numbers of methylene groups were compared with respect to thermal, mechanical, and gas barrier properties. As the number of methylene groups between ester groups increased in the even-numbered series, the melting temperature decreased and oxygen permeability increased. We also found that these polymers are readily degradable under neutral, acidic, and basic hydrolytic conditions. These high-performance poly(ester–amide)s are promising sustainable alternatives to conventional gas barrier materials.
中文翻译：
源自乙交酯的延展性气体阻隔性聚（酯-酰胺）
可持续阻气材料，如聚乙交酯、聚（L-丙交酯）和聚（2,5-呋喃二甲酸乙二醇酯）是用于包装的传统塑料的重要替代品，其中低透气性是有益的。然而，这些材料中的高结晶度会导致不合需要的低材料韧性。我们报告了由乙交酯和二胺衍生的聚（酯-酰胺），具有高韧性和理想的气体阻隔性能。这些可持续的聚（酯-酰胺）是由乙交酯衍生的二胺二醇和二酸合成的。为了了解聚（酯-酰胺）的结构-性能关系，比较了具有不同数量亚甲基的聚合物的热、机械和气体阻隔性能。随着偶数系列中酯基之间的亚甲基数量增加，熔融温度降低，透氧性增加。我们还发现这些聚合物在中性、酸性和碱性水解条件下很容易降解。这些高性能聚（酯-酰胺）是传统阻气材料的有希望的可持续替代品。
更新日期：2022-06-23
中文翻译：
源自乙交酯的延展性气体阻隔性聚（酯-酰胺）
可持续阻气材料，如聚乙交酯、聚（L-丙交酯）和聚（2,5-呋喃二甲酸乙二醇酯）是用于包装的传统塑料的重要替代品，其中低透气性是有益的。然而，这些材料中的高结晶度会导致不合需要的低材料韧性。我们报告了由乙交酯和二胺衍生的聚（酯-酰胺），具有高韧性和理想的气体阻隔性能。这些可持续的聚（酯-酰胺）是由乙交酯衍生的二胺二醇和二酸合成的。为了了解聚（酯-酰胺）的结构-性能关系，比较了具有不同数量亚甲基的聚合物的热、机械和气体阻隔性能。随着偶数系列中酯基之间的亚甲基数量增加，熔融温度降低，透氧性增加。我们还发现这些聚合物在中性、酸性和碱性水解条件下很容易降解。这些高性能聚（酯-酰胺）是传统阻气材料的有希望的可持续替代品。
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