The effect of diamine structure on the thermomechanical properties of epoxy resin thermosets

IF 4.1 2区化学 Q2 POLYMER SCIENCE

Polymer Pub Date : 2025-04-16 DOI:10.1016/j.polymer.2025.128408

Romina Keshavarz, Marlene A. Velazco-Medel, Matthew D. Green

{"title":"The effect of diamine structure on the thermomechanical properties of epoxy resin thermosets","authors":"Romina Keshavarz, Marlene A. Velazco-Medel, Matthew D. Green","doi":"10.1016/j.polymer.2025.128408","DOIUrl":null,"url":null,"abstract":"Structure and composition are two essential components that affect the properties of the polymeric thermoset. In this paper, we studied the effect of the diamine structure on thermoset properties by synthesizing a series of epoxy-based thermosets composed of hardeners with almost equivalent molecular weights, including diaminooctane (DAO), Jeffamine-EDR, para-xylylenediamine (p-XDA), and meta-xylylenediamine (m-XDA). The structural and thermomechanical properties of the cured thermosets were characterized by attenuated total reflectance Fourier-transform infrared spectroscopy (ATR-FTIR), x-ray diffraction (XRD), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and dynamic mechanical analysis (DMA). These thermosets with amorphous structures, confirmed by XRD, were fully cured and crosslinked according to FTIR results. All thermosets demonstrated high thermal stability above 376 °C, with aromatic thermosets showing the highest char yield. The sample cured with m-XDA exhibited the highest glass transition temperature according to the DMA results, which were in agreement with the DSC results.","PeriodicalId":405,"journal":{"name":"Polymer","volume":"8 1","pages":""},"PeriodicalIF":4.1000,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Polymer","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1016/j.polymer.2025.128408","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}

引用次数: 0

Abstract

Structure and composition are two essential components that affect the properties of the polymeric thermoset. In this paper, we studied the effect of the diamine structure on thermoset properties by synthesizing a series of epoxy-based thermosets composed of hardeners with almost equivalent molecular weights, including diaminooctane (DAO), Jeffamine-EDR, para-xylylenediamine (p-XDA), and meta-xylylenediamine (m-XDA). The structural and thermomechanical properties of the cured thermosets were characterized by attenuated total reflectance Fourier-transform infrared spectroscopy (ATR-FTIR), x-ray diffraction (XRD), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and dynamic mechanical analysis (DMA). These thermosets with amorphous structures, confirmed by XRD, were fully cured and crosslinked according to FTIR results. All thermosets demonstrated high thermal stability above 376 °C, with aromatic thermosets showing the highest char yield. The sample cured with m-XDA exhibited the highest glass transition temperature according to the DMA results, which were in agreement with the DSC results.

Abstract Image

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

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.