{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T05:08:25Z","timestamp":1789016905619,"version":"build-2803163510"},"reference-count":165,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2026,9,8]],"date-time":"2026-09-08T00:00:00Z","timestamp":1788825600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100032103","name":"Petrovietnam University","doi-asserted-by":"crossref","award":["GV2509"],"award-info":[{"award-number":["GV2509"]}],"id":[{"id":"10.13039\/100032103","id-type":"DOI","asserted-by":"crossref"}]},{"award":["GV2509"],"award-info":[{"award-number":["GV2509"]}],"id":[{"id":"https:\/\/ror.org\/03vwaan51","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Gels"],"abstract":"<jats:p>Polymer aerogels have attracted increasing attention as lightweight porous materials for thermal insulation, separation, adsorption, remediation, and other environmental applications. Their low density and tunable surface chemistry also make them suitable for converting renewable, recycled, and waste-derived feedstocks into value-added materials. However, their overall sustainability remains difficult to assess because most studies focus on material properties, whereas solvent use, drying energy, processing yield, durability, regeneration, and end-of-life pathways are reported less consistently. This review examines sustainable polymer aerogels from the perspectives of cleaner production and waste valorization and focuses on two main features. First, a unified multiscale framework of structure, formation, and performance links network formation mechanisms, pore architecture, and macroscopic behavior across biomass-derived, thermoset, dynamic covalent, hybrid, and recycled polymer aerogels, which are compared in terms of feedstock origin, processing intensity, functional performance, durability, and circularity. Second, structure\u2013property mapping is combined with sustainability-constrained, AI-guided design, with environmental descriptors treated as optimization objectives from the outset rather than as post hoc justifications. Particular attention is given to waste and secondary resources, including agricultural residues, textile waste, paper waste, recycled poly(ethylene terephthalate), and end-of-life tire fibers. The review also discusses how life-cycle assessment, service-based functional units, and minimum reporting standards can help assess whether sustainability claims are supported by measurable environmental benefits. Several recurring limitations emerge from the literature: sustainability is often discussed only qualitatively, processing data are insufficient to support robust life-cycle assessments, solvent exchange and drying remain major environmental hotspots, and circularity claims frequently conflate bio-based content, biodegradability, recyclability, and reusability. Finally, the review discusses how data-driven tools, including literature mining, machine learning, and multi-objective optimization, can support polymer-aerogel design when environmental descriptors are included from the beginning of materials development. The review also proposes a reporting and design roadmap for future work toward polymer aerogels that combine useful performance with lower resource intensity and credible end-of-life value retention.<\/jats:p>","DOI":"10.3390\/gels12090824","type":"journal-article","created":{"date-parts":[[2026,9,8]],"date-time":"2026-09-08T10:00:04Z","timestamp":1788861604000},"page":"824","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Sustainable Polymer Aerogels: Multiscale Design from Biomass and Thermoset Networks to AI-Guided Materials Discovery"],"prefix":"10.3390","volume":"12","author":[{"given":"Trung Chi","family":"Duong","sequence":"first","affiliation":[{"name":"Refining and Petrochemical Department, Petroleum Faculty, Petrovietnam University, 762 Cach Mang Thang Tam, Ba Ria Ward, Ho Chi Minh City 78117, Vietnam"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Phan Minh Quoc","family":"Binh","sequence":"additional","affiliation":[{"name":"Refining and Petrochemical Department, Petroleum Faculty, Petrovietnam University, 762 Cach Mang Thang Tam, Ba Ria Ward, Ho Chi Minh City 78117, Vietnam"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dam Thi Thanh","family":"Hai","sequence":"additional","affiliation":[{"name":"Refining and Petrochemical Department, Petroleum Faculty, Petrovietnam University, 762 Cach Mang Thang Tam, Ba Ria Ward, Ho Chi Minh City 78117, Vietnam"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Le Thanh","family":"Thanh","sequence":"additional","affiliation":[{"name":"Refining and Petrochemical Department, Petroleum Faculty, Petrovietnam University, 762 Cach Mang Thang Tam, Ba Ria Ward, Ho Chi Minh City 78117, Vietnam"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Truong Thanh","family":"Tuan","sequence":"additional","affiliation":[{"name":"Refining and Petrochemical Department, Petroleum Faculty, Petrovietnam University, 762 Cach Mang Thang Tam, Ba Ria Ward, Ho Chi Minh City 78117, Vietnam"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-5796-7185","authenticated-orcid":false,"given":"Nguyen Thi Phuong","family":"Nhung","sequence":"additional","affiliation":[{"name":"Refining and Petrochemical Department, Petroleum Faculty, Petrovietnam University, 762 Cach Mang Thang Tam, Ba Ria Ward, Ho Chi Minh City 78117, Vietnam"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nguyen Van","family":"Kiet","sequence":"additional","affiliation":[{"name":"Refining and Petrochemical Department, Petroleum Faculty, Petrovietnam University, 762 Cach Mang Thang Tam, Ba Ria Ward, Ho Chi Minh City 78117, Vietnam"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1606-4522","authenticated-orcid":false,"given":"Nga H. N.","family":"Do","sequence":"additional","affiliation":[{"name":"Institute for Tropical Technology (VITTEP), 57A Truong Quoc Dung Street, Phu Nhuan Ward, Ho Chi Minh City 70073, Vietnam"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hai M.","family":"Duong","sequence":"additional","affiliation":[{"name":"Faculty of Agriculture and Fisheries, Mekong University (MKU), Vinh Long City 85216, Vietnam"},{"name":"Department of Mechanical Engineering, National University of Singapore (NUS), Singapore 117575, Singapore"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,9,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"3558","DOI":"10.1038\/s41467-020-17353-8","article-title":"Nonequilibrium continuous phase transition in colloidal gelation with short-range attraction","volume":"11","author":"Rouwhorst","year":"2020","journal-title":"Nat. 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