Sustainable, degradable and malleable low-dielectric-constant thermosets derived from biomass for recyclable green electronics
- Sookmyung Women's University, Seoul (Korea, Republic of); Samyang Corp., Daejeon (Korea, Republic of)
- Sookmyung Women's University, Seoul (Korea, Republic of)
- Korea Electronics Technology Institute, Seongnam-si (Korea, Republic of)
- Samyang Corp., Daejeon (Korea, Republic of)
- New Mexico Institute of Mining and Technology, Socorro, NM (United States)
In view of their excellent thermal and chemical resistance, favorable adhesion properties, high tensile strength, and other advantages, epoxy thermosets have numerous industrial applications such as coating, adhesive, and composite material production. However, bisphenol A (BPA)-based resins, which account for a significant fraction of the above thermosets, adversely affect human health by interfering with the normal functioning of the endocrine system and cannot be easily decomposed and recycled. Herein, degradable and sustainable bio-based epoxy thermosets with crosslinked network structures are prepared by the epoxidation of isosorbide with epichlorohydrin and the curing of the produced isosorbide diglycidyl ether (ISDGE) with cyclic lactones through a cationic ring-opening reaction. The ISDGE thermosets fully decompose into soluble and recyclable products under mildly basic conditions within three days, which is ascribed to the presence of ester moieties within the polymer network structure. Compared to a representative BPA-based epoxy, ISDGE-based thermosets exhibit lower dielectric constants and are more flexible. Moreover, the glass fibers in ISDGE-based prepregs can be fully recovered after on-demand degradation. Furthermore, our work provides promising eco-friendly alternatives to conventional epoxy thermosets and paves the way for the reduction of plastic waste generation and the development of recyclable green electronics.
- Research Organization:
- New Mexico Institute of Mining and Technology, Socorro, NM (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0022261
- OSTI ID:
- 2559397
- Journal Information:
- Polymer Degradation and Stability, Journal Name: Polymer Degradation and Stability Vol. 239; ISSN 0141-3910
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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