دورية أكاديمية
Base-Mediated Depolymerization of Amine-Cured Epoxy Resins.
| العنوان: | Base-Mediated Depolymerization of Amine-Cured Epoxy Resins. |
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| المؤلفون: | DiPucchio RC; Renewable Resources and Enabling Sciences Center, National Renewable Energy Laboratory, Golden, Colorado 80401 United States., Stevenson KR; Renewable Resources and Enabling Sciences Center, National Renewable Energy Laboratory, Golden, Colorado 80401 United States., Lahive CW; Renewable Resources and Enabling Sciences Center, National Renewable Energy Laboratory, Golden, Colorado 80401 United States., Michener WE; Renewable Resources and Enabling Sciences Center, National Renewable Energy Laboratory, Golden, Colorado 80401 United States., Beckham GT; Renewable Resources and Enabling Sciences Center, National Renewable Energy Laboratory, Golden, Colorado 80401 United States. |
| المصدر: | ACS sustainable chemistry & engineering [ACS Sustain Chem Eng] 2023 Nov 20; Vol. 11 (48), pp. 16946-16954. Date of Electronic Publication: 2023 Nov 20 (Print Publication: 2023). |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: American Chemical Society Country of Publication: United States NLM ID: 101608852 Publication Model: eCollection Cited Medium: Print ISSN: 2168-0485 (Print) Linking ISSN: 21680485 NLM ISO Abbreviation: ACS Sustain Chem Eng Subsets: PubMed not MEDLINE |
| أسماء مطبوعة: | Original Publication: Washington, DC : American Chemical Society, c2013- |
| مستخلص: | Carbon fiber-reinforced epoxy composites are used in multiple industries, including aerospace, automotive, and wind energy applications, due to their excellent strength-to-weight ratios and tunable material properties. Fortunately, recycling strategies for carbon fiber-based composites are emerging, with the primary focus on the recovery of fibers due to the cost and energy intensity in their production. In addition to fiber recovery, there is an opportunity to recycle the epoxy components such that ideal recycling strategies would yield both fibers and epoxy monomers for reuse. To that end, here we examine potassium tert -butoxide-mediated cleavage of C-O and C-N bonds in amine-cured epoxy resins. We accomplish this via developing model compounds that reflect both C-O and C-N linkages in amine-cured epoxy composites before expanding to both model linear thermoplastics and thermosets. We obtain excellent yields of both phenol (up to 97% molar yield) and amine products (up to 99 mol %) from aromatic and/or aliphatic amine-based model compounds. This system enables up to a quantitative yield of bisphenol A and up to 58% molar yield of aniline from model thermoplastic epoxy amines and 71% molar yield of BPA from a reaction with a thermoset substrate. These data correspond to a 15% mass recovery of BPA from a commercial epoxy thermoset. Competing Interests: The authors declare the following competing financial interest(s): RCD and GTB have filed a provisional patent application on this work. (© 2023 The Authors. Published by American Chemical Society.) |
| References: | Nature. 2023 May;617(7962):730-737. (PMID: 37100913) Top Catal. 2018 Jun;61(7-8):704-709. (PMID: 30288016) ACS Appl Polym Mater. 2021 Nov 12;3(11):5588-5595. (PMID: 34796334) Science. 2022 Oct 14;378(6616):207-211. (PMID: 36227984) Chem Rev. 2021 Jul 28;121(14):8452-8477. (PMID: 33476128) Waste Manag. 2017 Apr;62:229-240. (PMID: 28215972) J Am Chem Soc. 2023 Mar 22;145(11):6562-6576. (PMID: 36890641) |
| تواريخ الأحداث: | Date Created: 20231211 Latest Revision: 20231211 |
| رمز التحديث: | 20231215 |
| مُعرف محوري في PubMed: | PMC10698742 |
| DOI: | 10.1021/acssuschemeng.3c04181 |
| PMID: | 38076616 |
| قاعدة البيانات: | MEDLINE |
Find this issue from the American Chemical Society | تدمد: | 2168-0485 |
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| DOI: | 10.1021/acssuschemeng.3c04181 |