Nonisocyanate CO2-Based Poly(ester-co-urethane)s with Tunable Performances: A Potential Alternative to Improve the Biodegradability of PBAT,ACS Sustainable Chemistry & Engineering

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Nonisocyanate CO2-Based Poly(ester-co-urethane)s with Tunable Performances: A Potential Alternative to Improve the Biodegradability of PBAT
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-01-16 , DOI: 10.1021/acssuschemeng.9b06294
Shuxian Ye ₁ , Xinqi Xiang ₁ , Shuanjin Wang ₁ , Dongmei Han ₂ , Min Xiao ₁ , Yuezhong Meng ₁

Affiliation

The objective of this study is to develop a nonisocyanate route to prepare a biodegradable CO₂-based poly(ester-co-urethane) (PEU), which has some improved performances when compared with commercial poly(butylene adipate-co-terephthalate) (PBAT). These performances include mechanical properties, biodegradability, and melt processability. Specifically, five bis-alkylcarbamates were synthesized from diamines, methanol, and CO₂. Subsequently, 1,4-butanediol (BDO) and dimethyl terephthalate (DMT) reacted with five kinds of CO₂-based bis-alkylcarbamates to study the influence of methylene group number on the performances of PEUs. Moreover, the effect of various ratios of aromatic to aliphatic blocks in PEUs on their properties was systematically investigated. Additionally, the hydrolytic stability of synthesized PEUs was evaluated upon the degradation percentage in phosphate-buffered saline. The semicrystalline PEUs with tunable properties exhibit an initial thermal decomposition temperature of over 273.7 °C and a T_g above 12.4 °C. Due to the presence of hydrogen bonding, the tensile strength is as high as 49 MPa. The designed and synthesized PEUs are promising as a potential biodegradable thermoplastic with superior performances when compared with commercial PBAT.

中文翻译：

具有可调节性能的非异氰酸酯基于CO ₂的聚（酯-共氨基甲酸酯）：提高PBAT的生物降解性的潜在选择

本研究的目的是开发一种nonisocyanate路线制备可生物降解的CO ₂基于聚（酯-共-urethane）（PEU），其具有一些改进的性能时与商业聚相比（亚丁基己二酸酯共-terephthalate）（ PBAT）。这些性能包括机械性能，生物降解性和熔体加工性。具体而言，由二胺，甲醇和CO ₂合成了五种双烷基氨基甲酸酯。随后，1,4-丁二醇（BDO）和对苯二甲酸二甲酯（DMT）与5种CO ₂反应基双烷基氨基甲酸酯，研究亚甲基数目对PEUs性能的影响。此外，系统地研究了PEU中芳香族与脂肪族嵌段的各种比例对其性能的影响。另外，根据磷酸盐缓冲盐水中的降解百分比评估合成的PEU的水解稳定性。具有可调特性的半结晶PEU的初始热分解温度超过273.7°C，T _g高于12.4°C。由于存在氢键，抗拉强度高达49 MPa。与商用PBAT相比，设计和合成的PEU具有潜在的优越性能，有望成为一种潜在的可生物降解的热塑性塑料。

更新日期：2020-01-17

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