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http://142.54.178.187:9060/xmlui/handle/123456789/20020| Title: | Facile Synthesis of Poly (Carbonyl Urea) Oligomer (Pcuo) from Urea and Dipropyl Carbonate (Dprc) Applied as Nitrogen Slow-Release Fertilizers |
| Authors: | JIANCHAO CHEN YAQING LIU HONGFANG JIU PEIHUA ZHAO FUTIAN ZHU |
| Issue Date: | 20-Jun-2012 |
| Publisher: | HEJ Research Institute of Chemistry, University of Karachi, Karachi. |
| Citation: | Chen, J., Liu, Y., Jiu, H., Zhao, P., & Zhu, F. (2012). Facile Synthesis of Poly (Carbonyl Urea) Oligomer (Pcuo) from Urea and Dipropyl Carbonate (Dprc) Applied as Nitrogen Slow-Release Fertilizers. Journal of the Chemical Society of Pakistan, 34(3). |
| Abstract: | a novel slow-release nitrogen fertilizer poly(carbonyl urea)oligomer (PCUO) was prepared by the condensation polymerization of urea and dipropyl carbonate (DPrC) at normal pressure, in which anhydrous potassium carbonate was as a catalyst. The oligomer was characterized by FT-IR, ¹H-NMR, and ¹³C-NMR spectroscopy, which showed that the average degree of PCUO was 1 to 5. The effects of the molar ratio of urea to DPrC, reaction time as well as the temperature on the yields were investigated and optimized. In addition, the slow-release behaviour of PCUO was evaluated in distilled water, which revealed that the product had good slow-release property. |
| URI: | http://142.54.178.187:9060/xmlui/handle/123456789/20020 |
| ISSN: | 0253-5106 |
| Appears in Collections: | Issue 03 |
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| ViewByVolume.aspx?v=176&i=VOLUME%2034,%20NO3,%20JUN%202012.htm | 149 B | HTML | View/Open |
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