Self-healing amine- and carboxy-cured bio-based epoxy vitrimers driven by the disulfide metathesis reaction

IF 3.1 3区化学 Q2 POLYMER SCIENCE

Polymer Bulletin Pub Date : 2024-10-24 DOI:10.1007/s00289-024-05538-w

Yamato Ogawa, Kaito Sugane, Mitsuhiro Shibata

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Abstract

Mixtures of sorbitol polyglycidyl ether (SPE) and poly(ethylene glycol) diglycidyl ether (PEGDGE) were cured with cystamine (CTA) to produce bio-based amine-cured epoxy resins (SPE-PEGDGE-CTA) containing disulfide bonds. Furthermore, the SPE was cured with 3,3′-dithiodipropionic acid (DTDPA) and citric acid (CA) to produce bio-based carboxy-cured epoxy resins (SPE-DTDPA-CA) containing disulfide bonds. Fourier transform infrared spectroscopy (FT-IR) of the cured products revealed that the epoxy–amine and epoxy–carboxy curing reactions proceeded almost completely. The glass transition temperature (T_g) and mechanical strength of the amine-cured products decreased with increasing PEGDGE fraction, and those of the carboxy-cured products decreased with increasing DTDPA fraction. The amine-cured product with the highest CTA fraction and all carboxy-cured products were healed three times at 80 ℃, whereas none of the corresponding cured products without disulfide bonds exhibited self-healing properties. The maximal healing efficiencies of the amine- and carboxy-cured products in terms of tensile strength were 84% and 91%, respectively.

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来源期刊

Polymer Bulletin 化学-高分子科学

CiteScore

6.00

自引率

6.20%

发文量

审稿时长

5.5 months

期刊介绍： "Polymer Bulletin" is a comprehensive academic journal on polymer science founded in 1988. It was founded under the initiative of the late Mr. Wang Baoren, a famous Chinese chemist and educator. This journal is co-sponsored by the Chinese Chemical Society, the Institute of Chemistry, and the Chinese Academy of Sciences and is supervised by the China Association for Science and Technology. It is a core journal and is publicly distributed at home and abroad. "Polymer Bulletin" is a monthly magazine with multiple columns, including a project application guide, outlook, review, research papers, highlight reviews, polymer education and teaching, information sharing, interviews, polymer science popularization, etc. The journal is included in the CSCD Chinese Science Citation Database. It serves as the source journal for Chinese scientific and technological paper statistics and the source journal of Peking University's "Overview of Chinese Core Journals."