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首页> 外文期刊>ACS Sustainable Chemistry & Engineering >Effects of Methyl Branching on the Properties and Performance of Furandioate-Adipate Copolyesters of Bio-Based Secondary Diols
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Effects of Methyl Branching on the Properties and Performance of Furandioate-Adipate Copolyesters of Bio-Based Secondary Diols

机译:甲基分枝对生物基二醇的呋喃酰基己二酸酯共聚酯性能和性能的影响

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20 kDa using 2° alcohol diols. All copolyesters from 2° diols were entirely amorphous and exhibited higher T _(g)s than their linear equivalents from 1° diols. Compared to linear poly(1,4-butyleneadipate-co -1,4-butylenefurandioate), methyl-branched, poly(2,5-hexamethyleneadipate-co -2,5-hexamethylenefurandioate) (0:7:0.3 furandioate/adipate ratio) displayed both higher modulus (67.8 vs 19.1 MPa) and higher extension at break (89.7 vs 44.5 mm). All other methyl-branched copolyesters displayed lower modulus but retained higher extension at break compared with their linear analogues. Enzymatic hydrolysis studies using Humicola insolens cutinase revealed that copolyesters from 2° alcohol diols have significantly decreased rates of biodegradation than their linear equivalents synthesized using 1° alcohol diols, allowing for fine-tuning of polymer stability. Hydrophobicity, as revealed by water contact angles, was also found to generally increase through the introduction of methyl branching, demonstrating potential for these materials in coatings applications.]]>
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