TY  - JOUR
AU  - Guo, M.
AU  - Liu, M.
AU  - Liang, R.
AU  - Niu, A.
TI  - Granular urea-formaldehyde slow-release fertilizer with superabsorbent and moisture preservation
JO  - Journal of applied polymer science
VL  - 99
SN  - 0021-8995
CY  - New York, NY [u.a.]
PB  - Wiley
M1  - PreJuSER-57847
SP  - 3230 - 3235
PY  - 2006
N1  - Record converted from VDB: 12.11.2012
AB  - To improve the utilization of fertilizer and water resource at the same time, a new type of slow-release fertilizer with superabsorbent and moisture preservation was developed, with the combination of slow-release technique and superabsorbent polymers. The coatings were formed by the inverse phase polymerization technique. The element analysis results showed that the product contained 22.58% nitrogen element, and the water absorbency of the product was 94 times its own weight if it was allowed to swell in tap water at room temperature for 2 h. The results of the slow-release behavior of N and the water absorbency and retention properties in soil showed that the product not only had good slow-release property but also had excellent water absorbency and water retention capacity, which was a significant advantage over the normal slow-release or controlled-release fertilizers. The effects of the amount of initiator, crosslinker, reaction time, and the degree of neutralization of acrylic acid on water absorbency were investigated and optimized. At the same, a rather new and simple method was used to make homogeneous urea-formaldehyde granules. (c) 2006 Wiley Periodicals, Inc.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000235343500049
DO  - DOI:10.1002/app.22892
UR  - https://juser.fz-juelich.de/record/57847
ER  -