Multiple Hydrogen Bonding Enables Strong, Tough, and Recyclable Soy Protein Films,ACS Sustainable Chemistry & Engineering

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Multiple Hydrogen Bonding Enables Strong, Tough, and Recyclable Soy Protein Films
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-04-30 , DOI: 10.1021/acssuschemeng.0c01333
Weidong Gu _{1,

2} , Xiaorong Liu _{1,

2} , Qiang Gao _{1,

2} , Shanshan Gong _{1,

2} , Jianzhang Li _{1,

2} , Sheldon Q. Shi _{1,

2,

3}

Affiliation

Despite the recent advances in the recycling of petroleum-based materials, there is an urgent need to expand the range of applications of the biobased recyclable polymers. Here, recyclable hyperbranched polyester (HBPE) toughened and enhanced soy protein (SP) films were prepared with a high mechanical strength and an excellent toughness. The HBPE-doped biomass films exhibited high tensile strength of 13.7 MPa, exceptional toughness of 11.8 MJ m^–3, and strain at break of up to 91.8%. The excellent mechanical properties were attributed to the increase in free volume fraction by the introduction of nanoscale cavities into the SP film matrix and the strong intermolecular sacrificial hydrogen bonds within the matrix. There, recyclable SP films have great potential to replace the petrochemical resources with renewable materials in polymer applications.

中文翻译：

多个氢键键合可形成坚固，坚韧和可回收的大豆蛋白薄膜

尽管最近在石油基材料的再循环方面取得了进步，但是迫切需要扩大生物基可再循环聚合物的应用范围。在此，制备了具有高机械强度和优异韧性的可回收的超支化聚酯（HBPE）增韧和增强大豆蛋白（SP）薄膜。掺杂HBPE的生物质薄膜展现出13.7 MPa的高拉伸强度，11.8 MJ m ^–3的超强韧性，断裂应变高达91.8％。优异的机械性能归因于通过将纳米级腔体引入SP膜基体以及基体中强大的分子间牺牲氢键，增加了自由体积分数。在那里，可回收的SP膜具有巨大的潜力，可以在聚合物应用中用可再生材料代替石油化学资源。

更新日期：2020-04-30

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