{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T01:42:40Z","timestamp":1760060560200,"version":"build-2065373602"},"reference-count":63,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2025,9,8]],"date-time":"2025-09-08T00:00:00Z","timestamp":1757289600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"BPI France","award":["DOS0158930\/00"],"award-info":[{"award-number":["DOS0158930\/00"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>Miscanthus \u00d7 giganteus particles possess excellent advantages in biodegradability and sustainability. However, their susceptibility to ultraviolet (UV) degradation limits wider outdoor applications. In the present work, electron beam (e-beam) radiation-induced grafting was used for the first time to attempt covalent grafting of UV absorbers onto miscanthus particles to address a major challenge in natural fiber stabilization. Two UV absorbers, 2-hydroxy-4-(methacryloyloxy) benzophenone (HMB) and 2-(4-benzoyl-3-hydroxyphenoxy) ethyl acrylate (BHEA), were explored using both pre-irradiation and simultaneous approaches. Pre-irradiation grafting did not achieve useful covalent fixation of HMB or BHEA, due in part to the premature decay of radicals at elevated temperatures and with solvent use, and the lignin-based quenching of radicals. Solvent-free mutual irradiation grafting failed due to immobility of the UV absorbers, while grafting of HMB in solvent failed due to radical-scavenging behavior. Grafting of BHEA was successfully achieved under solvent-based simultaneous irradiation, reaching up to 38 wt % DG in a butanone\/2.5% H2SO4 system. This condition led to the improved UV stability of miscanthus particles, in which color change was reduced significantly after 1000 h of accelerated weathering; this was mainly linked to a beneficial pre-darkening effect which was induced by the presence of the acid. This work proposes a route of grafting strategy that aims to improve the photostability of miscanthus particles, paving the way for durable bio-based materials in outdoor composite applications.<\/jats:p>","DOI":"10.3390\/molecules30173649","type":"journal-article","created":{"date-parts":[[2025,9,8]],"date-time":"2025-09-08T11:51:12Z","timestamp":1757332272000},"page":"3649","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Evaluating UV Stability of Miscanthus \u00d7 giganteus Particles via Radiografting of UV Absorbers"],"prefix":"10.3390","volume":"30","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0622-4614","authenticated-orcid":false,"given":"Roland","family":"El Hage","sequence":"first","affiliation":[{"name":"PCH, IMT\u2013Mines Al\u00e8s, 6, Avenue de Clavi\u00e8res, 30100 Al\u00e8s, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dominique","family":"Lafon-Pham","sequence":"additional","affiliation":[{"name":"EuroMov Digital Health in Motion, University of Montpellier, IMT Mines Ales, 6 Avenue de Clavi\u00e8res, 30319 Al\u00e8s, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6487-7299","authenticated-orcid":false,"given":"Rodolphe","family":"Sonnier","sequence":"additional","affiliation":[{"name":"PCH, IMT\u2013Mines Al\u00e8s, 6, Avenue de Clavi\u00e8res, 30100 Al\u00e8s, France"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2025,9,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"27538","DOI":"10.1039\/C6RA27987B","article-title":"Biocomposite Consisting of Miscanthus Fiber and Biodegradable Binary Blend Matrix: Compatibilization and Performance Evaluation","volume":"7","author":"Muthuraj","year":"2017","journal-title":"RSC Adv."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"47306","DOI":"10.1002\/app.47306","article-title":"A Flame Retarded Chitosan Binder for Insulating Miscanthus\/Recycled Textile Fibers Reinforced Biocomposites","volume":"136","author":"Khalaf","year":"2019","journal-title":"J. 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