南京林业大学学报（自然科学版）Issue(3)：106-112,7.DOI:10.3969/j.issn.1000-2006.2015.03.020
文化纸白水中溶解物质和胶体物质的来源分析及表征
Origin analysis and characterization of dissolved and colloidal substances from white water in fine paper mill
摘要
Abstract
The origin and characteristics of dissolved and colloidal substances ( DCS ) from a high closed white water system in fine paper mill were analyzed in this paper. The DCS were separated from white water by centrifugation⁃extrac⁃tion and the MTBE extracts were analyzed by gas chromatography mass spectrometry ( GC-MS) . The morphological char⁃acter of DCS was observed with microscope and laser particle size analyzer, and the molecular weight distribution and thermal weight loss properties of DCS were detected by gel permeation chromatography ( GPC) and thermogravimetry a⁃nalysis ( TGA) . The results showed that the DCS mainly originated from latex, paper additives and their ineffective prod⁃ucts such as defoaming agent, dispersant, surface sizing agent, brightening agent, but very few from lignin degradation. The particle size distribution of DCS was in the range of 500~4 000 nm, and the colloidal substance was dispersed in form of floc or absorbed on the surface of fines. The main molecular weight distribution area of DCS was<1 400 u and>12 600 u, and the macromolecular substances of DCS may be separated by ultrafiltration membrane with a cut off value of 10 ku. The DCS present obvious thermal weight loss during 100~700 ℃.关键词
白水/溶解与胶体物质/DCS来源/DCS特性Key words
white water/dissolved and colloidal substances/origin of DCS/properties of DCS分类
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陈晨,王晶晶,毛圣陶,苏文鹏,戴红旗..文化纸白水中溶解物质和胶体物质的来源分析及表征[J].南京林业大学学报（自然科学版）,2015,(3):106-112,7.基金项目
国家自然科学基金项目 （）
