首页|Homogeneous nanoparticle dispersion prepared with impurity-free dispersant by the ball mill technique

Homogeneous nanoparticle dispersion prepared with impurity-free dispersant by the ball mill technique

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The homogeneous dispersion of nanoparticles in solvents or polymer matrices is essential tor prac tical application of nanocomposites.In this study,the planetary ball milling technique was used to de-agglomerate silica nanoparticles in butyl acetate.The size of the nanosilica aggregates was evaluated by TEM and SEM.With the addition of polyacrylate polymer to the organic solvent,the nanoparticle agglomerates were effectively broken up by planetary ball milling at the proper milling time; however,re-agglomeration occurred after a longer milling time.The results of TGA and FTIR indicated that the polyacrylate molecules could be adsorbed in situ onto the nanoparticles.Behaving similar to a dispersant,the adsorbed polyacrylate reduced the blend viscosity significantly and prevented re-agglomeration of the nanoparticles.Utilizing the polyacrylate polymer both as the dispersant and the polymer matrix,the polyacrylate-based nanocoatings were further prepared.The optical transmittance and haze value of the nanocoatings were found to be sensitive to the dispersion level of the nanoparticles,and the elastic modulus and hardness of the nanocoatings were improved in comparison with those of the neat polymer coating.

NanoparticleNanocoatingBall millDispersant

Lingyun Zhou、Hui Zhang、Zhong Zhang

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National Center for Nanoscience and Technology, Beijing 100190, China

University of Chinese Academy of Sciences, Beijing 100049, China

This project was jointly supported by a key International collaboration projectMinistry of Science and Technology of China,key items of the Knowledge Innovation Project of the Chinese Academy of SciencesMinistry of Science and Technology of China,key items of the Knowledge Innovation Project of the Chinese Academy of Sciences国家自然科学基金

2011DFR50200KJCX2-YW-M20KJCX2-EW-L01-04-EW11225210

2013

颗粒学报(英文版)
中国颗粒学会　中国科学院过程工程研究所

颗粒学报(英文版)

CSTPCDCSCDSCIEI
影响因子：0.632
ISSN：1674-2001
年,卷(期)：2013.11(4)
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