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The Formation of Ordered Nanoporous Structure with Controlled Micelle Size

Published online by Cambridge University Press:  01 February 2011

Jeongho Chang ,
Yongsoon Shin ,
Li-Qiong Wang  and
Gregory J. Exarhos
Jeongho Chang
Affiliation:
Materials Chemistry Research, Pacific Northwest National Laboratory, Richland, WA 99352, USA
Yongsoon Shin
Affiliation:
Materials Chemistry Research, Pacific Northwest National Laboratory, Richland, WA 99352, USA
Li-Qiong Wang
Affiliation:
Materials Chemistry Research, Pacific Northwest National Laboratory, Richland, WA 99352, USA
Gregory J. Exarhos
Affiliation:
Materials Chemistry Research, Pacific Northwest National Laboratory, Richland, WA 99352, USA
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Abstract

Selected MPEG-b-PDLLA block copolymers have been synthesized with systematic variation of the chain lengths of the resident hydrophilic and hydrophobic blocks. The size and shape of the micelles that spontaneously form in solution are then controlled by the characteristics of the copolymer template. Formation of nanoporous silica at room temperature with short-preparation time is demonstrated and silica-containing materials evolve with uniform pore shape and wall structure. The formation mechanism of these nanoporous structures obtained by controlling the micelle size has been confirmed using both liquid and solid state 13C and 29Si NMR techniques.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 733: Symposium T – Polymer Nanocomposites , 2002 , T3.1
Copyright
Copyright © Materials Research Society 2002

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