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首页> 外文期刊>ACS Sustainable Chemistry & Engineering >Bench-Scale Synthesis and Characterization of Biodegradable Aliphatic-Aromatic Random Copolymers with 1,4-Cyclohexanedimethanol Units Toward Sustainable Packaging Applications
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Bench-Scale Synthesis and Characterization of Biodegradable Aliphatic-Aromatic Random Copolymers with 1,4-Cyclohexanedimethanol Units Toward Sustainable Packaging Applications

机译：具有1,4-环己烷二甲醇单位朝向可持续包装应用的可生物降解脂族芳族芳族芳族无规共聚物的基准尺度合成与表征

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The development of biodegradable packaging films can resolve environmental issues caused by plastic waste, but it still remains a great challenge to develop economically feasible polymers that simultaneously balance robust mechanical properties, biodegradability, and transparency. In this work, we describe the bench-scale synthesis (similar to 1.5 kg) and blown film characterization of new biodegradable aliphatic-aromatic copolymers, poly(1,4-butylene1,4-cyclohexanedimethylene carbonate-terephthalate)s (PBCCTs) with different molar ratios of two diol monomers, 1,4-cyclohexanedimethanol (CHDM) and 1,4-butandiol (BD), from 0:1 to 5:5 (CHDM/BD) to optimize the mechanical, optical, and thermal properties and biodegradability. The incorporation of CHDM units significantly impacted the thermal properties of the blown films from these copolymers; PBCCT films with 50 mol % CHDM content had a more amorphous and glassy character compared with the films with 0 mol % CHDM. And, PBCCT films with 30-50% CHDM content exhibited superior mechanical properties (tear strength = 11.5 kgf/mm and tensile strength = 369 kgf/cm(2)) and comparable transparency (haze = 16%) to those of nondegradable polyethylenes (PEs), the most commonly employed materials for packaging film applications. Taken together, the bench-scale synthesis of biodegradable polymers with suitable thermomechanical, optical, and permeability properties presented here showcases the potential of these materials as sustainable packaging materials.
机译：可生物降解包装薄膜的发展可以解决由塑料废物引起的环境问题，但仍然是开发经济上可行的聚合物仍然存在巨大挑战，这些聚合物同时平衡稳健的力学性能，生物降解性和透明度。在这项工作中，我们描述了新的生物降解的脂族 - 芳族共聚物，聚（1,4-丁基1,4-环己烷二甲基碳酸酯 - 对苯二甲酸酯）（PBCCT）的基准尺度合成（类似于1.5千克）和吹膜表征的膨胀薄膜表征。两种二醇单体，1,4-环己烷二甲醇（CHDM）和1,4-丁二醇（BD），0：1至5：5（CHDM / BD）的摩尔比以优化机械，光学和热性能和生物降解性。 CHDM单元的掺入显着影响了来自这些共聚物的吹塑膜的热性质;具有50mol％CHDM含量的PBCCT薄膜与0mol％CHDM的薄膜相比具有更无定形和玻璃状的特性。并且，具有30-50％CHDM含量的PBCCT薄膜表现出优异的机械性能（撕裂强度= 11.5kgf / mm，拉伸强度= 369kgf / cm（2）），并与那些不可透明的透明度（雾霾= 16％）与那些不良聚乙烯（ PES），最常用的包装薄膜应用材料。在此举起的，具有合适的热机械，光学和渗透性性能的可生物降解聚合物的长凳合成展示了这些材料作为可持续包装材料的潜力。

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