Functionalized polyesters derived from glycerol: Selective polycondensation methods toward glycerol‐based polyesters by different catalysts,Journal of Applied Polymer Science

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Functionalized polyesters derived from glycerol: Selective polycondensation methods toward glycerol‐based polyesters by different catalysts
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2019-10-06 , DOI: 10.1002/app.48574
Fenfen Zeng ₁ , Xin Yang ₁ , Dexing Li ₁ , Li Dai ₁ , Xinyan Zhang ₁ , Yin Lv _{1,

2} , Zhong Wei _{1,

2}

Affiliation

Convergence of biodegradability and functionality is a major direction of new generation bio‐based materials. Functionalized aliphatic polyesters based on glycerol are synthesized by solvent‐free polycondensation directly. The aim is to prepare linear polyesters with pendant hydroxyl groups along the polymer backbone. The performance of the sustainable biocatalyst Novozyme‐435 (an immobilized form of Candida antarctica lipase B) and the metal‐based catalyst scandium trifluoromethanesulfonate (also known as scandium triflate) were compared with three organobase catalysts: 1,5,7‐triazabicyclo[4,4,0]dec‐5‐ene, diphenyl hydrogen phosphate, and bis(1,1,2,2,3,3,4,4,4‐nonafluoro‐1‐butanesulfonyl)imide. For the five catalytic systems, the efficiency and selectivity for the incorporation of glycerol were studied, mainly using ¹H NMR spectroscopies, whereas side reactions, such as different macromolecular architecture of different glyceride groups in polymers, were evaluated using ¹³C NMR. Especially, the biocatalyst Novozyme‐435 succeeded in incorporating glycerol in a selective way with a low reaction temperature, leading to close‐to‐linear polyesters. By using a renewable hydroxyl‐reactive based on polyesters derived from glycerol, it provides a theoretical reference for the synthesis of functional bio‐based materials. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48574.

中文翻译：

衍生自甘油的功能化聚酯：不同催化剂对甘油基聚酯的选择性缩聚方法

生物降解性和功能性的融合是新一代生物基材料的主要方向。基于甘油的官能化脂族聚酯是通过无溶剂缩聚直接合成的。目的是制备沿聚合物主链具有侧羟基的线性聚酯。可持续生物催化剂Novozyme-435（固定化的南极假丝酵母）的性能脂肪酶B）和金属基催化剂三氟甲磺酸scan（也称为三氟甲磺酸scan）与三种有机碱催化剂进行了比较：1,5,7-三氮杂双环[4,4,0] dec-5-ene，磷酸二苯氢和双（1,1,2,2,3,3,4,4,4-九氟--1-丁烷磺酰基）酰亚胺。对于这五个催化体系，主要使用¹ H NMR光谱研究了甘油的掺入效率和选择性，而副反应（例如聚合物中不同甘油酯基团的不同大分子结构）则使用¹³1 H NMR。尤其是，生物催化剂Novozyme-435成功地以较低的反应温度选择性地引入了甘油，从而制得了接近线性的聚酯。通过使用基于衍生自甘油的聚酯的可再生羟基反应性，它为功能性生物基材料的合成提供了理论参考。分级为4 +©2019 Wiley Periodicals，Inc.J.Appl。Polym。科学 2020，137，48574。

更新日期：2020-01-21

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