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Synthesis and fractionated crystallization of organic-inorganic hybrid composite materials from an amphiphilic polyethylene-block-poly (ethylene oxide) diblock copolymer

journal contribution
posted on 2007-06-29, 00:00 authored by Qipeng Guo, R Thomann, W Gronski
Mesostructurally ordered inorganic–organic hybrid composite materials were successfully synthesized by utilizing a low-molecular-weight amphiphilic polyethylene-block-poly(ethylene oxide) (PE–PEO) diblock copolymer as the directing agent. The hybrid composites were formed via the sol–gel reaction of inorganic precursor tetraethoxysilane (TEOS) in an acidic ethanol/water solution with various amounts of PE–PEO. In these composite materials, the hydrophobic PE block of the PE–PEO copolymer forms separate microphase on the nanoscales within the rigid matrix of silica network. The crystallization of the PE block is strictly restricted within the microphase by the rigid silica matrix and takes place through homogeneous nucleation under the nanoscale confinement environment.

History

Journal

Polymer

Volume

48

Issue

14

Pagination

3925 - 3929

Publisher

Elsevier

Location

Amsterdam, The Netherlands

ISSN

0032-3861

eISSN

1873-2291

Language

eng

Publication classification

C1 Refereed article in a scholarly journal; C Journal article

Copyright notice

2007, Elsevier Ltd.