文献类型：期刊文献

英文题名：Carboxymethyl cellulose/alum modified precipitated calcium carbonate fillers: Preparation and their use in papermaking

作者：Shen, Jing[1] Song, Zhanqian[2] Qian, Xueren[1] Yang, Fei[3]

第一作者：Shen, Jing

通信作者：Qian, XR[1]

机构：[1]NE Forestry Univ, Lab Pulp & Paper Engn Subject, Minist Educ, Key Lab Biobased Mat Sci & Technol,Mat Sci & Engn, Harbin 150040, Peoples R China;[2]State Forestry Adm, Inst Chem Ind Forest Prod, Chinese Acad Forestry, Key & Open Lab Forest Chem Engn, Nanjing 210042, Peoples R China;[3]S China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China

年份：2010

卷号：81

期号：3

起止页码：545-553

外文期刊名：CARBOHYDRATE POLYMERS

收录：;EI(收录号：20102413004932);Scopus(收录号：2-s2.0-77953325879);WOS:【SCI-EXPANDED(收录号:WOS:000278720200006)】；

基金：The authors would like to acknowledge support from the Fundamental Research Funds (DL09BB07) for the Central Universities of China, and Foundation (No. 11533009) of the Education Department of Heilongjiang Province of China. The authors also wish to thank Wenhua Gao, Hua Chen, Wenjia Han, et al., for their kind assistances in carrying through the relevant experimental work for this paper.

语种：英文

外文关键词：Carboxymethyl cellulose; Alum; Filler; Precipitated calcium carbonate; Papermaking; Filler modification; Encapsulation

摘要：Carboxymethyl cellulose and alum were used in the modification of precipitated calcium carbonate filler, and the use of modified fillers in papermaking was investigated. The alum dosage was found to be much critical to the effective precipitation and encapsulation of carboxymethyl cellulose on filler surfaces. When the dosages of carboxymethyl cellulose and alum were 4% and 12% (based on the dry weight of precipitated calcium carbonate), respectively, filler modification significantly improved filler retention by as much as 71.5%, and the brightness and opacity of the filled paper were strikingly enhanced: however, paper strength was practically unchanged, indicating improved affinity of filler particles to fibers in the aqueous papermaking wet end system. XPS analysis and SEM observations of the fillers confirmed the surface encapsulating effect of the modifiers on the filler. SEM images of the paper-sheets indicated that modified filler particles were more effectively adhered and bonded to the pulp fibers, in comparison to unmodified filler particles. (C) 2010 Elsevier Ltd. All rights reserved.