基于 2,6-萘二甲酸和双[4-(2-羟基乙氧基)苯基]砜衍生结构单元的具有超高玻璃化转变温度的无定形共聚酯,Macromolecular Chemistry and Physics

当前位置： X-MOL 学术 › Macromol. Chem. Phys. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

基于 2,6-萘二甲酸和双[4-(2-羟基乙氧基)苯基]砜衍生结构单元的具有超高玻璃化转变温度的无定形共聚酯
Macromolecular Chemistry and Physics ( IF 2.5 ) Pub Date : 2024-02-07 , DOI: 10.1002/macp.202300416
Yang Hu _{1,

2} , Xinming Pu ₂ , Jinggang Wang ₃ , Hongdong Zhang ₁ , Liping Yang ₂

Affiliation

具有超高玻璃化转变温度（ T _g ）的高性能共聚酯在电子设备、汽车和涂料等新兴技术领域至关重要。本文通过2,6-萘二甲酸（2 _， 6-NDA)、双[4-(2-羟基乙氧基)苯基]砜(BHEBS)和乙二醇(EG)。所制备的共聚物的化学结构和组成通过氢核磁谱( ¹ H NMR)证实。共聚酯的T _g (121.1–152.2 °C) 取决于成分，与聚醚醚酮 (PEEK: 143 °C) 相当，随着 BHEBS 单元数量的增加而增加。Fox、Gordon-Taylor 和 Kwei 方程分别用于评估T _g相对于 PESN 组成的变化。在这三个方程中，Kwei方程计算的数据最符合实际结果，这归因于其独特的介电特性。此外，PESNs在1,1,2,2-四氯乙烷、DMF和DMSO中表现出良好的溶解性，有利于满足聚酯涂料的需求。

"点击查看英文标题和摘要"

Amorphous Copolyester with Ultrahigh Glass Transition Temperatures Based on 2,6-Naphthalenedicarboxylic Acid and Bis[4-(2-Hydroxyethoxy) Phenyl] Sulfone-Derived Building Blocks

High performance copolyesters with ultrahigh glass transition temperature (T_g) are crucial in emerging technology fields such as electronic devices, automotives, and coatings. In this paper, a series of poly(ethylene bis[4-(2-hydroxyethoxy) phenyl] sulfone 2,6-naphthalate) (PESNs) with high T_g are synthesized by the copolymerization of 2,6-naphthalenedicarboxylic acid (2,6-NDA), bis[4-(2-hydroxyethoxy) phenyl] sulfone (BHEBS), and ethylene glycol (EG). The chemical structure and compositions of prepared copolymers are confirmed by hydrogen nuclear magnetic spectra (¹H NMR). T_g of copolyesters (121.1–152.2 °C) depends on composition and is comparable to that of polyetheretherketone (PEEK: 143 °C), increasing as the amount of BHEBS units is increased. The Fox, Gordon–Taylor, and Kwei equations are employed to evaluate the variation of T_g with respect to the composition of PESNs, respectively. In these three equations, the data calculated by Kwei equation fit the actual results best, attributed to the peculiar dielectric properties. In addition, PESNs show good solubility in 1,1,2,2-tetrachloroethane, DMF, and DMSO, which is conducive to meet the needs of polyester coating.

更新日期：2024-02-07

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南