源自生物基1,5-戊二醇和多种脂族二酸的高分子量聚酯：合成，表征和热机械性能,ACS Sustainable Chemistry & Engineering

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源自生物基1,5-戊二醇和多种脂族二酸的高分子量聚酯：合成，表征和热机械性能
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2017-05-28 00:00:00 , DOI: 10.1021/acssuschemeng.7b01050
Jing Lu ₁ , Linbo Wu ₁ , Bo-Geng Li ₁

Affiliation

高分子量脂族聚酯是通过熔融缩聚反应由生物基1,5-戊二醇和具有4、5、6、9、10或12个碳原子的脂族二酸合成的。通过特性粘度，凝胶渗透色谱法（GPC），核磁共振（NMR），差示扫描量热法（DSC），广角X射线衍射（WAXD），热重分析法对聚（1,5-戊二羧酸二甲酯）进行了表征分析（TGA）和拉伸测试。研究了二羧酸根链长对晶体结构和热机械性能的影响。除了聚（1,5-戊烯己二酸酯）（PPeA）较其他聚对苯二甲酸乙二醇酯（PPeA）热稳定性差之外，所有聚酯均具有超过100,000 g / mol的重均分子量或超过1.05 dL / g的特性粘度。作为半结晶聚合物，它们具有类似于聚乙烯的晶体结构，并且除了聚（1,5-戊烯琥珀酸酯）（PPeS）以外，还能快速结晶。总体而言，可结晶性和熔融温度（T _m）随着二羧酸根链长的增加而增加，并且在一定程度上存在“奇偶”效应。其中，聚（1,5-戊烯壬二酸酯）（PPeAz），聚（1,5-戊烯癸二酸酯）（PPeSe）和聚（1,5-戊烯十二烷二酸酯）（PPeDo）的T _m为50-62° C，良好的热稳定性，并与聚乙烯和公知的可生物降解的共聚酯，聚（亚丁基己二酸酯的比较显示出可比较的或甚至优异的拉伸性能共-terephthalate）（PBAT）。这些生物基和潜在可生物降解的聚酯似乎是有希望的实际应用材料。

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High Molecular Weight Polyesters Derived from Biobased 1,5-Pentanediol and a Variety of Aliphatic Diacids: Synthesis, Characterization, and Thermo-Mechanical Properties

High molecular weight aliphatic polyesters were synthesized from biobased 1,5-pentanediol and aliphatic diacids with 4, 5, 6, 9, 10, or 12 carbon atoms via melt polycondensation. The poly(1,5-pentylene dicarboxylate)s were characterized with intrinsic viscosity, gel permeation chromatography (GPC), nuclear magnetic resonance (NMR), differential scanning calorimetry (DSC), wide-angle X-ray diffraction (WAXD), thermogravimetric analysis (TGA), and tensile testing. The effects of dicarboxylate chain length on crystalline structure and thermo-mechanical properties were investigated. All the polyesters had weight-average molecular weight over 100,000 g/mol or intrinsic viscosity over 1.05 dL/g except poly(1,5-pentylene adipate) (PPeA), which was less thermally stable than others. As semicrystalline polymers, they have a polyethylene-like crystal structure and crystallize rapidly except poly(1,5-pentylene succinate) (PPeS). As a whole, the crystallizability and melting temperature (T_m) increase with dicarboxylate chain length, and the “even–odd” effect exists to a certain extent. Among them, poly(1,5-pentylene azelate) (PPeAz), poly(1,5-pentylene sebacate) (PPeSe), and poly(1,5-pentylene dodecanedioate) (PPeDo) have T_m of 50–62 °C, good thermal stability, and exhibit comparable or even superior tensile properties in comparison with polyethylene and the well-known biodegradable copolyester, poly(butylene adipate-co-terephthalate) (PBAT). These biobased and potentially biodegradable polyesters appear to be promising materials for practical applications.

更新日期：2017-06-28

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