Arabian Journal of Chemistry | |
Rapid synthesis of a corncob-based semi-interpenetrating polymer network slow-release nitrogen fertilizer by microwave irradiation to control water and nutrient losses | |
Jun Wang1  Zhansheng Wu2  Yanhui He2  Bang-Ce Ye2  Peng Wen2  Yajie Han2  | |
[1] Agricultural Techniques Extension Center, Xinjiang Agricultural Reclamation Academy of Sciences, 221 Wuyi Road, Shihezi 832000, People’s Republic of China;School of Chemistry and Chemical Engineering/The Key Lab. for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, 221 North Fourth Road, Shihezi 832003, People’s Republic of China; | |
关键词: Corncob; Bentonite; Polyvinylpyrrolidone; Semi-interpenetrating polymer network; Microwave irradiation; Slow-release fertilizer; | |
DOI : 10.1016/j.arabjc.2017.03.002 | |
来源: DOAJ |
【 摘 要 】
This paper presents the rapid synthesis of a corncob-based semi-interpenetrating polymer network (semi-IPN) slow-release nitrogen fertilizer (SRFs) with bentonite additives via microwave irradiation at 320 W for 4.5 min. The SRFs were based on urea incorporated in a polymer matrix composed of corncob-g-poly(acrylic acid)/bentonite network and linear polyvinylpyrrolidone. The structure and properties of the sample were characterized. Swelling measurements and water-retention studies indicated that the water absorbency of the SRFs was 1156 g/g in distilled water and that the water-retention capacity of the soil with 2% SRFs was 20.3% after 30 days. In addition, the SRFs possessed lower N leaching loss amount (13.2%) and N migrate-to-surface loss amount (6.8%) compared with urea. The SRFs could effectively reduce the N release rate (56.6% of N was released after 30 days) and consequently facilitate the growth of cotton plants. Thus, the high-performance SRFs capable of controlling water and N losses could be widely applied to agricultural fields, and microwave irradiation could be a significant strategy to produce SRFs.
【 授权许可】
Unknown