Chem. J. Chinese Universities ›› 2025, Vol. 46 ›› Issue (8): 20250060.doi: 10.7503/cjcu20250060

• Polymer Chemistry • Previous Articles     Next Articles

Structure and Properties of Polyester Hybrid Materials Directly Synthesized from Monomers

LI Yantong1, LIANG Qianqian2,3, HE Li1, LONG Xinyi1, ZHANG Jiayu1, LI Jiale1, SUN Nan1, ZHANG Quanping1()   

  1. 1.State Key Laboratory of Environment?friendly Energy Materials,School of Materials and Chemistry,Southwest University of Science and Technology,Mianyang 621010,China
    2.State Key Laboratory of Polymer Materials Engineering,College of Polymer Science and Engineering Sichuan University,Chengdu 610065,China
    3.Sichuan Dongcai Science and Technology Group Co. ,Ltd. ,Mianyang 621030,China
  • Received:2025-02-28 Online:2025-08-10 Published:2025-05-28
  • Contact: ZHANG Quanping E-mail:zhangqp@swust.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(22309151);the Natural Science Foundation of Sichuan Province, China(2025ZNSFSC0343)

Abstract:

In polymer hybrid materials, a small quantity of inorganic components can significantly enhance physical properties such as mechanical and dielectric energy storage. However, traditional processing strategies like solution blending present complex procedures, high carbon emissions, and scalability challenges. This study employs a dual in situ strategy to directly synthesize polyester hybrid materials from organic-inorganic monomers, meanwhile spectroscopic analysis is utilized to investigate molecular structural evolution from monomers to the hybrid materials. The results demonstrate polyester in situ polymerization synchronizes with in situ growth of inorganic components during synthesis. More importantly, molecular-scale interdiffusion between polymer chains and inorganic components establishes a characteristic organic-inorganic hybrid structure. Tensile strength and elongation at break increase from 58.23 MPa and 17.14% for pure polyester to 68.98 MPa and 33.69%, respectively. The dielectric constant reaches approximately 2.1 times to that of pure polyester, while breakdown strength improves from 235.03 MV/m to 418.38 MV/m at 100 ℃. Consequently, the energy storage density surges from 5.38 J/cm³ to 10.64 J/cm³, representing a 97.77% enhancement. This work provides a low-carbon fabrication strategy for high-performance polyester hybrid materials, which expands functional development avenues and application potential for polyester-based materials.

Key words: Polyethylene terephthalate, Organic-inorganic hybrid material, Mechanical property, Dielectric property

CLC Number: 

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