期刊
POLYMER DEGRADATION AND STABILITY
卷 162, 期 -, 页码 102-105出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2019.02.011
关键词
Fertilizer; Elemental sulfur; Inverse vulcanization; Oxidation; Soybean oil; Polysulfide
资金
- Ministry of Science, Technology and Innovation (through SisNANO Program e National System of Laboratories in Nanotechnology)
- National Council for Scientific and Technological Development (CNPq) [133960/2017-0, 142348/2014-07, 458763/2014-4, 201215/2015-2]
- Coordination for the Improvement of Higher Education Personnel (CAPES) [001]
- Coordination for the Improvement of Higher Education Personnel (CAPES-Embrapa Program) [166/Call 15/2014]
- Sao Paulo Research Foundation (FAPESP) [2013/11821-5, 2018/10104-1]
- CAPES/Alexander von Humboldt Foundation [001, 88881.145566/2017-1]
- Embrapa Rede AgraNano
Sulfur deficiency in soils has become an increasing concern over the past decades. Despite elemental sulfur (S-8) vast utilization as a commercial fertilizer, S-8 has to be biologically oxidized for plant assimilation, drastically limiting its efficiency. Therefore, we propose a new fertilizer in which S-8 structure is more accessible to oxidizing microorganisms by chemical modification via inverse vulcanization technique, a solvent-free copolymerization method, with soybean oil as comonomer. Sulfur oxidation experiments were performed by A. niger submerged cultivation, confirming that the homogeneous rubbery-like material provides enhanced oxidation, with great potential as multifunctional sulfurfertilizer. (C) 2019 Elsevier Ltd. All rights reserved.
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