Title

Stresses at the Interface of Mcro with Nano

Abstract

Bicontinuous meso/macroporous materials with ordered tubular mesopores are inherently unstable with stresses built in at the interface of the nano/micro fractal dimensions. This is concluded by comparing the macroscopic dimensions and the unit cell size of native monoliths with those of monoliths stabilized against shrinkage by a conformal polymer coating on all macro- and mesoporous surfaces. The enhanced tendency for shrinking at the nanoscopic level is attributed to a syneresis-like mechanism where hydrogen bonding between hydroxyl groups in the concave internal surfaces of the tubular nanosized mesopores causes contraction.

Department(s)

Chemistry

Sponsor(s)

National Science Foundation (U.S.)
University of Missouri Research Board

Library of Congress Subject Headings

Hydrogen bonding

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2007 American Chemical Society (ACS), All rights reserved.


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