{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,23]],"date-time":"2026-08-23T18:37:36Z","timestamp":1787510256397,"version":"build-2736575974"},"reference-count":59,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2025,5,7]],"date-time":"2025-05-07T00:00:00Z","timestamp":1746576000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"central guidance for Local Projects","award":["2023FRD05033"],"award-info":[{"award-number":["2023FRD05033"]}]},{"name":"central guidance for Local Projects","award":["2018BBF33004"],"award-info":[{"award-number":["2018BBF33004"]}]},{"name":"central guidance for Local Projects","award":["NXYLXK2017B03"],"award-info":[{"award-number":["NXYLXK2017B03"]}]},{"name":"Key R&amp;D projects of the Autonomous Region in Ningxia","award":["2023FRD05033"],"award-info":[{"award-number":["2023FRD05033"]}]},{"name":"Key R&amp;D projects of the Autonomous Region in Ningxia","award":["2018BBF33004"],"award-info":[{"award-number":["2018BBF33004"]}]},{"name":"Key R&amp;D projects of the Autonomous Region in Ningxia","award":["NXYLXK2017B03"],"award-info":[{"award-number":["NXYLXK2017B03"]}]},{"name":"first-class discipline construction project of the Autonomous Region in Ningxia","award":["2023FRD05033"],"award-info":[{"award-number":["2023FRD05033"]}]},{"name":"first-class discipline construction project of the Autonomous Region in Ningxia","award":["2018BBF33004"],"award-info":[{"award-number":["2018BBF33004"]}]},{"name":"first-class discipline construction project of the Autonomous Region in Ningxia","award":["NXYLXK2017B03"],"award-info":[{"award-number":["NXYLXK2017B03"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>To address the problem of environmental pollution caused by the extensive use of low-density polyethylene (LDPE) mulch film, this study developed a novel sprayable mulch using natural fibers and biodegradable polymers. Urea\u2013formaldehyde resin (UF), strengthened with polyvinyl alcohol (PVA), was used as a modifier to induce beneficial physicochemical structural changes in PVA-modified urea\u2013formaldehyde (PUF) resins. Characterization of these resins was conducted using Fourier transformation infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). Preparation of the biodegradable mulch was conducted using Xuan paper waste residue (XP) as an enhancer, with PUF as the auxiliary agent. The resulting film (PUF-XP) was examined for differences in thickness, morphological characterization, and rate of weight loss, and the effects of different covering films on cucumber growth, root development, soil temperature, and weed control were evaluated. Characterization reveals that when the PVA content was 4% (W4UF), the film had the lowest free formaldehyde content (0.26%) and highest elongation at break (5.70%). In addition, W4UF could easily undergo thermal degradation at 278.4 \u00b0C and possessed a close-knit, three-dimensional structural network. W4UF was then mixed with paper powder and water in various proportions to produce three mulch films (BioT1, BioT2, and BioT3) that demonstrated excellent water retention and heat preservation and inhibited weed growth by 68.8\u201396.8%. Compared to no mulching (NM), BioT1 increased both the specific root length and root density, as well as improved the plant height, stem diameter, and total biomass of the cucumbers by 43.5%, 34.1%, and 33.9%, respectively. Therefore, a mass ratio of paper powder, water, and W4UF of 1:30:2 produced a biodegradable mulch film that could be used as an alternative to LDPE, mitigating the environmental pollution rendered by synthetic plastic mulch films and offering the potential for a sustainable agricultural application.<\/jats:p>","DOI":"10.3390\/polym17091277","type":"journal-article","created":{"date-parts":[[2025,5,7]],"date-time":"2025-05-07T04:20:26Z","timestamp":1746591626000},"page":"1277","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Urea\u2013Formaldehyde Strengthened by Polyvinyl Alcohol: Impact on Mulch Film Properties and Cucumber Cultivation"],"prefix":"10.3390","volume":"17","author":[{"given":"Tingting","family":"Shen","sequence":"first","affiliation":[{"name":"College of Enology and Horticulture, Ningxia University, Helanshan Xilu No. 489, Yinchuan 750021, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yongjie","family":"Ma","sequence":"additional","affiliation":[{"name":"College of Enology and Horticulture, Ningxia University, Helanshan Xilu No. 489, Yinchuan 750021, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xueyan","family":"Zhang","sequence":"additional","affiliation":[{"name":"College of Enology and Horticulture, Ningxia University, Helanshan Xilu No. 489, Yinchuan 750021, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,5,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1068","DOI":"10.1021\/acs.est.6b06042","article-title":"Is Biodegradable Plastic Mulch the Solution to Agriculture\u2019s Plastic Problem","volume":"51","author":"Sintim","year":"2017","journal-title":"Environ. 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