中性造纸助剂羟丙基壳聚糖的增强作用与助滤性能  

Strengthening and Dewatering by Hydroxypropyl Chitosan as a Wet-end Additive in Neutral Papermaking

作　　者：唐新峰[1] 杜予民[1] 黎厚斌[1] 詹怀宇[2] 

机构地区：[1]武汉大学资源与环境科学学院,武汉430079 [2]华南理工大学制浆造纸工程国家重点实验室,广州510640

出　　处：《造纸科学与技术》2005年第1期1-4,共4页Paper Science & Technology

基　　金：制浆造纸工程国家重点实验室开放基金(200326)

摘　　要：本文通过考察羟丙基壳聚糖添加量和pH值条件的变化,研究了该助剂对纸张纤维的增强作用,发现该助剂添加量为 0. 8%与中言条件下,增强效果较好。羟丙基壳聚糖、羟丙基淀粉和浆料作用下的抗张指数较空白分别提高了 24. 5%和 12. 7%,耐折次数分别提高了 47. 4%和 31. 5%,羟丙基壳聚糖更能提高纸张的相关力学性能。羟丙基壳聚糖的剂量为 7mg/g时,浆料的滤水性能提高约 19. 7%。手抄片扫描电镜图 (SEM)和IR表明羟丙基壳聚糖加强了纤维分子间的相互作用力和有助于形成更多的氢键。This paper studied how the charge of hydroxypropyl chitosan′s addition and the vibration of pH affected the paper′s dry strength. And it showed that the optimum addition of this agent was 0.8% and the paper could get better physical properties at pH=7.0. The tensile index enhanced about 24.5% and 12.7% by hydroxypropyl chitosan and hydroxypropyl starch respectively.When the quantity of this additive was 7mg/g, dewatering properties was improved about 19.7%. SEM and IR were used to analyze the strengthening of this additive and it made a conclusion that hydroxypropyl chitosan helped to strengthen the interaction of the fibers and to form more hydrogen bonds.

关 键 词：羟丙基 中性造纸 纸张 壳聚糖 浆料 助剂 滤水性能 助滤性能 增强作用 纤维 

分 类 号：TS236.9[轻工技术与工程—粮食、油脂及植物蛋白工程] TS727[轻工技术与工程—食品科学与工程]