摘要
以丙酮作为沉淀剂,采用逐步沉淀分级法,将相对分子质量为52.4万的APAM(聚丙烯酰胺)分为相对分子质量为65.4万、59.7万、51.6万、40.9万、28.2万的5个级分。用红外光谱和GPC对APAM进行了结构表征,并分别将这5个级分的APAM用于阔叶木浆、麦草浆和废纸浆的纸张增强,得出APAM分子质量与其提高纸张强度性能的关系。
APAM of wide molecular weight distribution was fractionated to five products of different molecular weight and with narrow molecular weight distribution by stepwise precipitation using acetone as precipitating agent. The relation between molecular weight of APAM and its paper strengthening ability can be found by comparing the strengthening effect of five products on hardwood pulp, wheat straw pulp and waste paper pulp.
出处
《中国造纸》
CAS
北大核心
2005年第5期15-17,共3页
China Pulp & Paper
基金
陕西科技大学研究生创新基金资助项目。
关键词
阴离子聚丙烯酰胺
沉淀分级
增强剂
APMP
precipitation fractionation
strehgthening additive
