Issue 36, 2009
From the journal:

Journal of Materials Chemistry

Preparation of nearly monodisperse microcapsules with controlled morphology by in situpolymerization of a shell layer

Guoming Liu,ac   Baoquan Xie,a   Dongsheng Fu,ac   Yang Wang,a   Qiang Fub  and  Dujin Wang*a  

* Corresponding authors

a Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
E-mail: djwang@iccas.ac.cn
Fax: +86 10-82612857
Tel: +86 10-82618533

b College of Polymer Science & Materials, Sichuan University, State Key Laboratory of Polymer Materials Engineering, Chengdu, China

c Graduate University of Chinese Academy of Sciences, Beijing, China

Abstract

Nearly monodisperse microcapsules with controllable porous surface morphologies were prepared by the in situpolymerization of melamine and formaldehyde with a template of nonionic surfactant micelles above the cloud point, inside which normal alkanes can be either encapsulated as phase change material or removed to obtain porous hollow spheres. The experimental results indicate that both the size and density of the pores on the microcapsule surface are tunable by changing the amount of core material (normal alkane) or the ratio of the polymer shell material to core material. The formation mechanism of the surface porosity was investigated by considering the polymerization temperature and the concentration of nonionic surfactants, which were used as the emulsifiers of core material droplets. The thermal gravimetry analysis proved that the microcapsules are thermally stable, and the heat treatment provided a new approach to preparing porous hollow microspheres.

Graphical abstract: Preparation of nearly monodisperse microcapsules with controlled morphology by in situpolymerization of a shell layer

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Article information

DOI
https://doi.org/10.1039/B901102A
Article type
Paper
Submitted
19 Jan 2009
Accepted
18 Jun 2009
First published
20 Jul 2009

J. Mater. Chem., 2009,19, 6605-6609

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Preparation of nearly monodisperse microcapsules with controlled morphology by in situpolymerization of a shell layer

G. Liu, B. Xie, D. Fu, Y. Wang, Q. Fu and D. Wang, J. Mater. Chem., 2009, 19, 6605 DOI: 10.1039/B901102A

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