Environmentally friendly preparation of lignin/paraffin/epoxy resin composite-coated urea and evaluation for nitrogen efficiency in lettuce.
In: International Journal of Biological Macromolecules, Jg. 221 (2022-11-30), S. 1130-1141
academicJournal
Zugriff:
Novel lignin/paraffin/epoxy resin composite coated urea (LPECCU) was successfully prepared. Paraffin and epoxy resin (ER) were used to improve the slow-release properties of the lignin-based polyurethane (LPU) coated urea. The relationships among the N release characteristics, liquid-solid rate, –CNO/–OH molar rate and film formation rate in the coating material of LPECCU were investigated. The results showed that the water contact angle (WCA) of the LPU-paraffin increased with the rate of liquid-solid rate (73.61–88.19°) and –CNO/–OH molar rate (65.17–82.24°) increased. The average particle hardness of LPECCU decreased with the increased of liquid-solid rate (57.10–66.80 N) and the reduced of –CNO/–OH molar rate (48.11–63.00 N). The LPECCU emerged compact micro-structure, low sustained release and high compressive resistance by adding paraffin and ER. The coating material of LPECCU appeared excellent biodegradability in the soil. The optimal N cumulative release rate (72.49 %) of LPECCU was obtained (liquid-solid rate of 1.43, –CNO/–OH molar rate of 2, and the film formation rate of 6.66 %). The lettuce growth study was conducted to further evaluate the pot application of the LPECCU. In comparison to conventional urea, LPECCU could improve the total dry matter accumulation and N use efficiency of the lettuce. • Novel lignin/paraffin/epoxy resin composite coated urea (LPECCU) was prepared. • The release longevity of LPECCU was related to preparation of coating material. • The coating material appeared excellent biodegradability in the soil. • The LPECCU could improve the N use efficiency and growth of lettuce. [ABSTRACT FROM AUTHOR]
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Environmentally friendly preparation of lignin/paraffin/epoxy resin composite-coated urea and evaluation for nitrogen efficiency in lettuce.
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Autor/in / Beteiligte Person: | Chen, Xiaojuan ; Guo, Tao ; Yang, Huchen ; Zhang, Lidan ; Xue, Yunna ; Wang, Rongfeng ; Fan, Xiaolin ; Sun, Shaolong |
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Zeitschrift: | International Journal of Biological Macromolecules, Jg. 221 (2022-11-30), S. 1130-1141 |
Veröffentlichung: | 2022 |
Medientyp: | academicJournal |
ISSN: | 0141-8130 (print) |
DOI: | 10.1016/j.ijbiomac.2022.09.112 |
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