机械力化学制备缓控释尿素及性能研究

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• 英文论文题名：Study on preparation and properties of controlled-release urea by mechanochemistry
• 论文作者：白国强 ; 盛文波 ; 马志远 ; 贾鑫
• 英文论文作者：Guoqiang Bai ; Wenbo Sheng ; Zhiyuan Ma ; Xin Jia ; School of Chemistry and Chemical Engineering ; University of Shihezi ; Key Laboratory for Green Processing of Chemical Engineering of Xinjiang bingtuan
• 年：2016
• 作者机构：石河子大学化学化工学院新疆生产建设兵团化工绿色过程重点实验室;
• 论文关键词：机械力化学 ; 包膜尿素 ; 控制释放 ; pH响应性
• 会议召开时间：2016-07-02
• 会议录名称：中国化学会第30届学术年会摘要集-论坛三：化学与农业交叉论坛
• 语种：中文
• 分类号：TQ441.41
• 学会代码：ZGHY
• 会议名称：中国化学会第30届学术年会-论坛三 ; 化学与农业交叉论坛
• 会议地点：中国辽宁大连
• 主办单位：中国化学会
• 学会名称：中国化学会
• 页数：1
• 文件大小：141k
• 原文格式：D
• 会议级别：全国

摘要

肥料高效利用是实现我国农业可持续发展的重大需求。缓控释包膜肥料可有效提高肥料利用率。前期,从仿生多巴胺化学出发,结合表面引发原子转移自由基聚合(SI-ATRP)和表面自引发光接枝聚合(SIPGP)技术成功制备了具有"Polydopamine-g-polymer brushes"结构的刺激响应性体系,实现了对活性成分的控制释放[1-4]。然而,该方法不适用于水溶性肥料体系。因此,亟需探索一种绿色、无溶剂方法以实现对水溶性肥料(尿素)的缓慢控制释放。机械力化学为解决这一问题提供了一种有效途径,因为它是无/少溶剂的化学反应且易于实现工业化,具有较好的实际应用前景。本文利用机械力化学,结合配位化学,探索了无溶剂条件下聚多酚-金属离子络合膜的制备条件,并成功制备了具有pH响应性的缓控释包膜尿素,研究了其控制释放性能。结果表明,该方法易于制备包膜型缓控释尿素且具有pH控制释放性能。
High efficient utilization of fertilizers is the major requirements to achieve the sustainable development of agriculture in China. Slow- or controlled-release fertlizers is an effective way to improve nutrient efficiency. Inspired by Mussel chemistry, the polydopamine-g-polymer systems were successfully prepared via the surface-initiated atom transfer radical polymerization(SI-ATRP) and surface-initiated photografting and photopolymerization(SIPGP), which could tune the release of nutrients according to external stimuli. ~([1-4]) However, these methods are unsuitable for the water-soluble fertilizers. Therefore, it is necessary to develop a solvent-free or less solvent approach to prepare the slow- and controlled-release fertilizers(Urea). Mechanochemistry provides an effective means to realize these because of its easy industrialization and wide application prospect. Herein, we develop a solvent-free method to prepare the polyphenols-metal films and p H-response and controlled-release fertilizers by one-step ball milling based on mechanochemistry and coordination chemistry. The results revealed that these fertilizers have excellent sustained-release properties.

引文

[1]Sheng,W.;Li,B.;Wang,X.;Dai,B.;Yu,B.;*Jia,X.;*Zhou,F.*Chemical Science.2015,6:2068.
    [2]Jia,X.;Sheng,W.;Li,W.;Tong,Y.;Liu,Z.;Zhou,F.*ACS Applied Materials&Interfaces.2014,6:19552.
    [3]Ma,Z.;Jia,X.;*Hu,J.;Zhang,G.;Zhou,F.;Liu,Z.;Wang H.Langmuir.2013,29:5631.
    [4]Ma,Z.;Jia,X.;*Zhang,G.;Hu,J.;Zhang,X.;Liu,Z.;Wang,H.;Zhou,F.J.Agric.Food Chem.2013,61:5474.