Journal of South China University of Technology(Natural Science) >

2010 , Vol. 38 >Issue 9: 63 - 67,74

DOI: https://doi.org/10.3969/j.issn.1000-565X.2010.09.012

Chemistry & Chemical Engineering

Nanocellulose Whiskers as Thickening Rheological Agent for Waterborne Polyurethane Dispersion

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  • School of Chemistry and Chemical Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China
叶代勇（1972-），男，博士，副教授，主要从事绿色精细化学工程研究．

Received date: 2009-12-28

  Revised date: 2010-04-29

  Online published: 2010-09-25

Supported by

国家自然科学基金资助项目（20646003）; 广东省自然科学基金资助项目（07300767）; 华南理工大学中央高校基本科研业务费专项资金资助项目（2009ZM0239）

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Abstract

Nanocellulose whisker（NCW） suspension was prepared via the acid-catalyzed hydrolysis and the pro-duct was characterized.Then,the effects of temperature and NCW content on the viscosity of the suspension were analyzed,and the Ostwade power equation model of the suspension was discussed,finding that the viscosity of NCW suspension increases with the NCW content,but it is insensitive to temperature.Moreover,the effects of temperature and NCW content on the rheological properties of waterborne polyurethane（WPU） dispersion mixed with NCW suspension were investigated.The results show that the addition of NCW in the WPU dispersion helps to decrease the viscous flow activation energy and improve the thixotropy of the mixed system,meaning that NCW is an effective thickening agent of WPU dispersion.

Key words： nanocellulose whisker; waterborne polyurethane; rheological; thixotropy; functional additive

Cite this article

Ye Dai-yong Zhou Liu-jia . Nanocellulose Whiskers as Thickening Rheological Agent for Waterborne Polyurethane Dispersion[J]. Journal of South China University of Technology(Natural Science), 2010 , 38(9) : 63 -67,74 . DOI: 10.3969/j.issn.1000-565X.2010.09.012

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