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| Preparation of Enteromorpha Polysaccharides/Konjac Glucosidan/Biochar Fertilizer Mulch Film |
| Received:March 17, 2024 Revised:April 07, 2024 |
| DOI：10.11981/j.issn.1000-6842.2025.01.115 |
| Key Words:Enteromorpha polysaccharide;Konjac glucomannan;biochar;degradable mulch film;nutritional function |
| Fund Project:国家自然科学基金（32271821）；泰山学院引进人才科研启动基金（Y-01-2021023）；泰山产业领军人才工程资助。 |
| Author Name | Affiliation | Postcode | | LI Xiang | College of Engineering， Qufu Normal University， Rizhao， Shandong Province， 276826
Shandong Binhai New Materials Technology Co.， Ltd.， Linyi， Shandong Province， 276600 | 276600 | | SONG Weiguang | Shandong Binhai New Materials Technology Co.， Ltd.， Linyi， Shandong Province， 276600
Shanghai Yinai New Material Science & Technology Co.， Ltd.， Shanghai， 201799 | 201799 | | CHENG Hongyu | Shanghai Yinai New Material Science & Technology Co.， Ltd.， Shanghai， 201799 | 201799 | | WANG Xioadi | College of Chemistry and Chemical Engineering， Taishan University， Taian， Shandong Province， 271000 | 271000 | | WANG Shujie | College of Engineering， Qufu Normal University， Rizhao， Shandong Province， 276826 | 276826 | | LI Qing | College of Engineering， Qufu Normal University， Rizhao， Shandong Province， 276826 | 276826 | | SUN Zhonghua* | College of Chemistry and Chemical Engineering， Taishan University， Taian， Shandong Province， 271000 | 271000 |
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| Abstract: |
| This study extracted Enteromorpha polysaccharide from Enteromorpha， and used urea-loaded biochar （U-BC， loading ratio of 17.8%）， Enteromorpha polysaccharide， and konjac glucomannan （KGM） as raw materials to prepare a biodegradable nutrient-functionalized Enteromorpha polysaccharide/KGM/biochar fertilizer mulch film （UBCF）. The chemical structure， urea-releasing property， mechanical properties， water resistance， light transmittance， thermal stability， and biodegradability of UBCF were systematically investigated. The results revealed that UBCF contained abundant functional groups including hydroxyl， carboxyl， and sulfonic acid groups. The cumulative release ratio of urea in UBCF was 76.9% after 20 h water immersion. Notably， UBCF exhibited light transmittance <3%， meeting the optical requirements for opaque black films. After 80 days of soil burial， the degradation rate of UBCF reached 68.3%， confirming its excellent light-blocking capability， biodegradability， and favorable thermal stability. |
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