Zhao Changbo, Huang Caijuan, Chen Qin, Ingram Ian D V, Zeng Xiankui, Ren Tianhua, Xie Haibo
Department of Polymer Materials &Engineering, College of Materials & Metallurgy, Guizhou University, West Campus, Huaxi District, Guiyang 550025, China.
Department of Natural Sciences, Manchester Metropolitan University, Chester Street, Manchester M1 5DG, UK.
Polymers (Basel). 2020 Mar 5;12(3):586. doi: 10.3390/polym12030586.
The design and preparation of polymers by using biobased chemicals is regarded as an important strategy towards a sustainable polymer chemistry. Herein, two aromatic diols, 4-(hydroxymethyl)-2-methoxyphenol and 2-(4-(hydroxymethyl)-2-methoxyphenoxy)ethanol, have been prepared in good yields through the direct reduction of vanillin and hydroxyethylated vanillin (4-(2-hydroxyethoxy)-3-methoxybenzaldehyde) using NaBH, respectively. The diols were submitted to traditional polycondensation and polyaddition with acyl chlorides and diisocyanatos, and serials of new polyesters and polyurethanes were prepared in high yields with moderate molecular weight ranging from 17,000 to 40,000 g mol. Their structures were characterized by H NMR, C NMR and FTIR, and their thermal properties were studied by TGA and differential scanning calorimetry (DSC), indicating that the as-prepared polyesters and polyurethanes have T in the range of 16.2 to 81.2 °C and 11.6 to 80.4 °C, respectively.
利用生物基化学品设计和制备聚合物被视为实现可持续聚合物化学的一项重要策略。在此，通过分别使用硼氢化钠直接还原香草醛和羟乙基化香草醛（4-(2-羟基乙氧基)-3-甲氧基苯甲醛），以良好的产率制备了两种芳香二醇，即4-(羟甲基)-2-甲氧基苯酚和2-(4-(羟甲基)-2-甲氧基苯氧基)乙醇。将这些二醇与酰氯和二异氰酸酯进行传统的缩聚和加聚反应，以高产率制备了一系列新型聚酯和聚氨酯，其分子量适中，范围为17,000至40,000 g/mol。通过氢核磁共振（¹H NMR）、碳核磁共振（¹³C NMR）和傅里叶变换红外光谱（FTIR）对它们的结构进行了表征，并通过热重分析（TGA）和差示扫描量热法（DSC）研究了它们的热性能，结果表明所制备的聚酯和聚氨酯的玻璃化转变温度分别在16.2至81.2℃和11.6至80.4℃范围内。
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