不同预处理后麦草的组分变化及溶解性能  

Changes of Components and Dissolution Performance of Wheat Straw after Pretreated with Different Methods

作　　者：虞霁 叶菊娣[1] 李小保[1] 翟姝瑾 苏萌[1] 严伟[1] 洪建国[1] 

机构地区：[1]南京林业大学化学工程学院,南京210037

出　　处：《湖北农业科学》2014年第1期33-37,共5页Hubei Agricultural Sciences

基　　金：国家公益性行业(林业)科研专项(201204803);江苏高校优势学科建设工程资助项目

摘　　要：研究采用乙二胺、氢氧化钠和硫酸等对麦草进行预处理,分析预处理后麦草的组分变化,并通过X射线衍射对麦草秸秆纤维结晶度的变化进行表征。结果表明,先碱后酸预处理后麦草秸秆纤维的结晶度上升最大。麦草经过预处理后可以溶解在氢氧化钠/硫脲/尿素/水的溶液中,通过对比几种预处理麦草的溶解性能,表明经过先碱后酸预处理后的麦草在氢氧化钠/硫脲/尿素/水的溶液中溶解性能最好。Wheat straw was pretreated in solution of sodium hydroxide, sulphuric acid and 1,2-ethylenediamine. The changes of components and structure of different solution were investigated. The change of crystallinity was characterized by X-ray diffraction. Results showed that wheat straw pretreated in solution of sodium hydroxide-sulphuric acid had the most decrease of crystallinity. Pretreated wheat straw can dissolve in NaOH/urea/thiourea aqueous solution. The dissolving property of wheat straw pretreated was compared. Results showed that wheat straw pretreated in solution of sodium hydroxide-sulphuric acid had the best ability of dissolution.

关 键 词：麦草 预处理 组分 溶解性能 

分 类 号：X712[环境科学与工程—环境工程]