水溶性纸的溶解机制研究  

Dissolving Mechanism of Water Soluble Paper

作　　者：侯玉峰 于品育 张红杰 HOU Yufeng;YU Pinyu;ZHANG Hongjie(Tianjin Key Laboratory of Pulp and Paper,College of Paper Science and Technology,Tianjin University of Science & Technology,Tianjin 300457,China)

机构地区：[1]天津市制浆造纸重点实验室天津科技大学造纸学院

出　　处：《天津科技大学学报》2019年第3期34-37,80,共5页Journal of Tianjin University of Science & Technology

基　　金：天津市自然科学基金重点项目(16JCZDJC37700)

摘　　要：采用吸附动力学模型对水溶性纸的水吸收过程进行表征,实验结果表明:其准一级吸附动力学模型的相关系数(R2)>0.95,水吸收过程主要受物理吸附控制.同时,利用聚焦光束反射测量仪(FBRM)对水溶性纸在水中的溶解行为进行全程实时监测,通过对整个溶解过程的纸页结构、纤维尺寸与形态的分析,可将其分为3个阶段:纸页的主体解构阶段(t0~t1)、纸页的解构和CMC纤维溶解阶段(t1~t2)、CMC纤维的溶解阶段(t2之后).在水溶性纸的溶解过程中,纸页的主体解构阶段(t0~t1)是控制其溶解效率的关键阶段.Adsorption kinetic models were used to characterize the water absorption process of water soluble paper in aqueous solution and the experimental results showed that the water absorption was mainly influenced by physical adsorption, which was confirmed by the high correlation coefficient of the pseudo first order kinetic model(R 2>0.95).Focused beam reflectance measurement(FBRM)was used to monitor the dissolution behavior of water soluble paper in aqueous solution in real time.Based on the analysis of paper structure,fiber size and morphology,the dissolution process could be divided into three phases:(1)the deconstruction of the main paper(t0-t1),(2)the continuous deconstruction and the CMC dissolution(t1- t2),(3)the CMC dissolution(after t2).Phase(1)was most critical for controlling the efficiency of water soluble paper in the dissolution process.

关 键 词：羧甲基纤维素钠 解构行为 吸附动力学 溶解过程 

分 类 号：TS721.1[轻工技术与工程—制浆造纸工程]