SURFACE MODIFICATION OF NANOMETER CALCIUM CARBONATE AND ITS EFFECT ON DYNAMIC VISCOELASTICITY OF PAPER COATINGS
The application of nanometer calcium carbonate (is abbreviated as nano-CaCO3) in paper coatings has attracted more and more attention. Three kinds of modified nano-CaCO3 samples were prepared by using cetyl trimethyl ammonium bromide (CTAB), coupling agent (CA) and fatty acid (FA) as interfacial modifier. With the modified nano-CaCO3, nano-CaCO3 compound paper coatings were obtained. The effect of modified nano-CaCO3 on the dynamic viscoelasticity of nano-CaCO3 compound paper coatings was discussed. The results show that the dynamic elastic storage modulus and viscid loss modules of nano-CaCO3 compound paper coatings are higher than those of traditional paper coatings, while the phase angle is lower. In addition, the results prove that surface modification is the key factor to carry out the effective application of nano-CaCO3 in paper coatings. Nano-CaCO3 modified with fatty acid is with lipophilicity, which makes it easy to attach latex and to form a network structure of good interfacial adhesive strength. Nano-CaCO3 modified with cetyl trimethyl ammonium bromide is with hydrophilicity, which leads to low dynamic elastic storage modulus and viscid loss modulus of nano-CaCO3 compound paper coatings.
nano-CaCO3 surface modification paper coatings dynamic viscoelasticity
Tang Yanjun Li Youming Song Jing Chen Liang
State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Zhuhai Hongtas Renheng Paper Co. Ltd, Zhuhai, 519070, China
国际会议
广州
英文
965-969
2006-11-08（万方平台首次上网日期，不代表论文的发表时间）