草浆废液制备生物质固沙材料及其在植被恢复上的应用(系列报道之二) 生物质固沙材料的结构特性  

Preparation of biomass sand stabilization material from straw pulp effluent and its application on vegetation restoration(Ⅱ)——Structural characteristics of biomass sand stabilization material

作　　者：金永灿[1] 刘军[1] 杨益琴[1] 李忠正[1] 

机构地区：[1]南京林业大学化学工程学院,江苏南京210037

出　　处：《中华纸业》2006年第10期75-78,共4页China Pulp & Paper Industry

基　　金：国家自然科学基金"功能性木质素固沙材料的特性及其作用机制"(50373020);国家林业局948项目"改性工业木质素防治沙漠化技术"(2003-4-32);南京林业大学高层次留学回国人员和引进高层次人才科研基金资助项目"利用禾草制浆废液制备植被用可降解固沙材料"

摘　　要：以禾草纤维制浆废液为主要原料,在合适的条件下经羟甲基化和交联等改性反应后合成新型生物质固沙材料。对生物质固沙材料在反应过程中结构特性变化的研究表明,麦草碱木质素与尿素、甲醛发生了相当程度的缩合,交联产物的大分子量组分有较大幅度提高,而半纤维素与脲醛不能发生交联反应。合成固沙材料的交联反应主要发生在木质素的愈创木基和对-羟基苯基结构上,并且愈创木基结构和对-羟基苯基结构发生交联反应的概率基本相同。生物质固沙材料的固沙强度与木质素C5位交联程度呈现良好的线性关系。New biomass sand stabilization material （BSSM） was prepared by modification reactions such as methylolation and cross-link reaction under suitable condition with wheat straw soda pulping effluent as the major raw material. The study on the structural property changes shows that a condensation took place between wheat straw alkali lignin and urea formaldehyde, the large molecular weight composition by cross link improves obviously and no cross linking reaction took place between hemicellulose and urea-formaldehyde. Guaiacyl and p-hydroxy phenyl structure of the lignin are the main positions for sand stabilization material synthesis cross-link reaction, and the reaction probability of guaiacyl and p-hydroxy phenyl structure in lignin is almost the same. It shows a good linear relationship between the sand stabilization strength of the biomass sand stabilization material and the cross-link degree of lignin C5 position.

关 键 词：固沙材料 制浆废液 结构特性 

分 类 号：X793[环境科学与工程—环境工程] TS79[轻工技术与工程—制浆造纸工程]