Cis-trans isomerism-driven thermal and phase transitions in oleic and elaidic acids and their derived polymers

IF 4.1 2区化学 Q2 POLYMER SCIENCE

Polymer Pub Date : 2025-01-15 DOI:10.1016/j.polymer.2024.127954

Minghao Wang , Haomin Yu , Jiawei Jiang , Wencong Xu , Guofeng Xu , Si Wu

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引用次数: 0

Abstract

Cis-trans isomerism plays a crucial role in regulating the thermal properties and phase transitions of materials, which is essential for the development of advanced functional materials. By influencing melting points and glass transition temperatures, cis-trans isomerism enables precise control over material performance in applications such as thermal sensors, self-healing coatings, thermal sensors, and temperature-responsive films. Here we report the impact of cis-trans isomerism in double bonds on the thermal and phase transitions of oleic acid (OA) and elaidic acid (EA) and their derived polymers, with a focus on glass transition temperature (T_g) and melting point (T_m). A series of molecules and copolymers with varying cis and trans double bond ratios are synthesized to examine how these isomeric configurations affect thermal behavior. Thermal and structural properties are characterized using differential scanning calorimetry (DSC) and nuclear magnetic resonance (NMR) spectroscopy. The results show a clear correlation between isomeric composition and the polymers' T_g and T_m, illustrating that the incorporation of cis-trans isomers can be effectively used to fine-tune thermal properties. This research offers valuable insights into the design of advanced polymeric materials with tailored thermal characteristics, paving the way for applications in various high-performance sectors.

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油酸和油酸及其衍生聚合物的顺反异构驱动的热相变

顺反异构在调节材料的热性能和相变方面起着至关重要的作用，这对于开发先进的功能材料至关重要。通过影响熔点和玻璃化转变温度，顺反异构可以精确控制热传感器、自修复涂层、热传感器和温度响应膜等应用中的材料性能。本文报道了双键顺反异构对油酸（OA）和油酸（EA）及其衍生聚合物的热转变和相变的影响，重点研究了玻璃化转变温度（Tg）和熔点（Tm）。合成了一系列具有不同顺式和反式双键比的分子和共聚物，以研究这些异构体构型如何影响热行为。采用差示扫描量热法（DSC）和核磁共振（NMR）光谱法对其热学和结构特性进行了表征。结果表明，异构体组成与聚合物的Tg和Tm之间存在明显的相关性，说明顺反异构体的加入可以有效地用于微调热性能。这项研究为设计具有定制热特性的先进聚合物材料提供了有价值的见解，为各种高性能领域的应用铺平了道路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Polymer 化学-高分子科学

CiteScore

7.90

自引率

8.70%

发文量

959

审稿时长

32 days

期刊介绍： Polymer is an interdisciplinary journal dedicated to publishing innovative and significant advances in Polymer Physics, Chemistry and Technology. We welcome submissions on polymer hybrids, nanocomposites, characterisation and self-assembly. Polymer also publishes work on the technological application of polymers in energy and optoelectronics. The main scope is covered but not limited to the following core areas: Polymer Materials Nanocomposites and hybrid nanomaterials Polymer blends, films, fibres, networks and porous materials Physical Characterization Characterisation, modelling and simulation* of molecular and materials properties in bulk, solution, and thin films Polymer Engineering Advanced multiscale processing methods Polymer Synthesis, Modification and Self-assembly Including designer polymer architectures, mechanisms and kinetics, and supramolecular polymerization Technological Applications Polymers for energy generation and storage Polymer membranes for separation technology Polymers for opto- and microelectronics.

文献相关原料

公司名称

产品信息

麦克林

Oleic acid

麦克林

Oleic acid (OA)

阿拉丁

2-bromo-2-methylpropionic acid

阿拉丁

1-Propanethiol

阿拉丁