Self-assembly of organophilic nanoparticles in a polymer matrix: Depletion interactions

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題名:	Self-assembly of organophilic nanoparticles in a polymer matrix: Depletion interactions
作者:	曹恆光;Hu, Ssu-Wei;Sheng, Yu-Jane;Tsao, Heng-Kwong
貢獻者:	工學院化學工程與材料工程學系
關鍵詞:	C: Nanops and Nanostructures;Condensed matter: structure, mechanical and thermal properties;Cross-disciplinary physics: materials science;rheology;Diffusion in nanoscale solids;Diffusion in solids;Exact sciences and technology;Materials science;Methods of nanofabrication;Nanocrystalline materials;Nanoscale materials and structures: fabrication and characterization;Physics;Self-assembly;Transport properties of condensed matter (nonelectronic)
日期:	2012-01-19
上傳時間:	2026-04-21 13:50:17 (UTC+8)
出版者:	American Chemical Society;Columbus, OH: American Chemical Society
摘要:	摘要： The dispersion of nanoparticles in a polymer matrix has been proven a challenge. A recent experiment reveals that it can be controlled by the relative size of nanoparticle/matrix polymer instead of their compatibility. Dissipative particle dynamics simulations are thus employed to investigate self-assembly of organophilic nanoparticles and dispersion of organophobic nanoparticles. The degree of aggregation in terms of the mean aggregation number is evaluated to explore the aggregation kinetics of nanocubes and nanoplatelets. The influence of the length of the matrix polymer on the aggregation behavior is studied as well. It is found that the depletion attraction plays the major role for the aggregation of organophilic nanoparticles. Large nanoplatelets prefer clustering, while small nanoplatelets tend to disperse because the depletion attraction grows with the face area of nanoparticles. On the other hand, the slow aggregation kinetics, hindered by the energy barrier associated with depletion interactions and low nanoparticle diffusivity, is responsible for the low degree of aggregation for organophobic nanoparticles. 其他題名： J. Phys. Chem. C 出版者： Columbus, OH: American Chemical Society 出版日期： 2012-01-19 出處： Journal of physical chemistry. C, 2012-01, Vol.116 (2), p.1789-1797 資源來源： American Chemical Society Journals 版權： Copyright © 2011 American Chemical Society 版權： 2015 INIST-CNRS 識別號： ISSN: 1932-7447 識別號： EISSN: 1932-7455 識別號： DOI: 10.1021/jp2104787
顯示於類別:	[化學工程與材料工程學系 ] 期刊論文

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