Facile Synthesis of Poly (Carbonyl Urea) Oligomer (pcuo) from Urea and Dipropyl Carbonate (Dprc) Applied as Nitrogen Slow-Release Fertilizers | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

7736196

Reference Type

Journal Article

Title

Facile Synthesis of Poly (Carbonyl Urea) Oligomer (pcuo) from Urea and Dipropyl Carbonate (Dprc) Applied as Nitrogen Slow-Release Fertilizers

Author(s)

Chen, J; Liu, Y; Jiu, H; Zhao, P; Zhu, F

Year

2012

Is Peer Reviewed?

Yes

Journal

Journal of the Chemical Society of Pakistan
ISSN: 0253-5106

Publisher

CHEM SOC PAKISTAN

Location

KARACHI

Volume

Issue

Page Numbers

663-668

Language

English

Web of Science Id

WOS:000307907300028

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.