三种膜材喷涂尿素前后红外吸收的研究  

Variations of IR-Spectra of Three Coating Materials Before and after Spraying on Urea Fertilizer

作　　者：刘兴斌[1,2] 陈利军[1] 武志杰[1] 张广娜[1,2] 

机构地区：[1]中国科学院沈阳应用生态研究所,辽宁沈阳110016 [2]中国科学院研究生院,北京100049

出　　处：《光谱学与光谱分析》2009年第9期2361-2364,共4页Spectroscopy and Spectral Analysis

基　　金：中国科学院知识创新工程领域方向项目(KZCX3-SW-445);国家重点基础研究发展计划项目(2007CB109307);国家科技支撑计划项目(2006BAD10B01)资助

摘　　要：包膜肥料是目前肥料研究领域中的热点。相关的研究主要集中在包膜材料对包膜肥养分释放的作用机制上,而膜材在包膜前后结构变化的可用信息则较少,此信息是能否直接用膜材研究包膜肥养分控释机理的关键所在。文章分别用以聚乳酸(PLA)、聚丁二酸丁二醇酯(PBS)和聚碳酸酯(PC)为主要材料配制的膜材为对象,研究他们在对尿素包膜前后红外吸收光谱的变化,目的是为利用纯膜材深入研究包膜肥养分控释机理提供理论依据。结果显示PLA和PC在对尿素包膜前后的红外吸收光谱变化较小,而PBS较大。这说明前两种包膜材料能够直接用于研究包膜肥养分释放情况,但PBS不能。Coated fertilizer is a hot spot in the domain of fertilizer research. Related researches mainly focused on the action mechanisms of coating materials in controlling the nutrient release from coated fertilizers, but less information is available on the structural variation of the coating materials before and after spraying on fertilizers, which is the key to whether we can directly use coating materials to extrapolate its mechanisms in controlling coated fertilizers＇ nutrient release. With polylactic acid （PLA）, poly （butynelenes succinate） （PBS）, and polycarbonate （PC） as test materials, the variations of their IR spectra before and after spraying on urea fertilizer were determined, which was aimed to supply theoretical basis for further studying the action mechanisms of coating materials in controlling coated fertilizers nutrient release. The results showed that PLA and PC had less variation in their IR spectra before and after spraying on urea fertilizer, while PBS acted in reverse, suggesting that the former two coating materials could be directly used for studying the patterns of nutrient release from coated fertilizers.

关 键 词：红外光谱 包膜尿素 聚乳酸 聚丁二酸丁二醇酯 聚碳酸酯 

分 类 号：O657.3[理学—分析化学]