论文部分内容阅读
将从巨桉中提取的葡萄糖醛酸木糖进行阳离子化改性,然后将其作为湿部增强剂进行应用。抽提的半纤维素得率为50.75%(相对于原料中的半纤维素)。抽出物中,木糖含量为40%,糖醛酸含量为16%,木素含量为27%。提取出的葡萄糖醛酸木糖相对分子质量为51589,制成的阳离子葡萄糖醛酸木糖的取代度为0.05~0.73,糖醛酸含量为6.12%~12.70%。阳离子葡萄糖醛酸木糖作为湿部添加剂加入硫酸盐巨桉浆中,可提高成纸强度和透气度;当其用量为1.0%时,阳离子巨桉葡萄糖醛酸木糖比阳离子淀粉等添加剂具有更好的效果。
The glucuronic acid xylose extracted from E. grandis was cationized and then applied as a wet end enhancer. The extracted hemicellulose yield was 50.75% (relative to the hemicellulose in the feedstock). Extracts, xylose content of 40%, uronic acid content of 16%, lignin content of 27%. The relative molecular mass of glucuronic acid xylose extracted was 51589, the degree of substitution of xylose made from cationic glucuronic acid was 0.05-0.73, and the uronic acid content was 6.12% ~ 12.70%. The cationic glucuronic acid xylose was added as wetting agent to the giant eucalyptus pulp, which could increase the strength and air permeability of the paper. When the dosage was 1.0%, the cationic xylose glucuronate xylose had more additives than cationic starch Good results.