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Mesoscopic Patterning in Evaporated Polymer Solutions: Poly(ethylene glycol) and Room‐Temperature‐Vulcanized Polyorganosilanes/‐siloxanes Promote Formation of Honeycomb Structures
Author(s) -
Bormashenko Edward,
Malkin Alexander,
Musin Albina,
Bormashenko Yelena,
Whyman Gene,
Litvak Natalya,
Barkay Zahava,
Machavariani Vladimir
Publication year - 2008
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200700552
Subject(s) - mesoscopic physics , materials science , siloxane , polymer , ethylene glycol , amorphous solid , honeycomb , vulcanization , chemical engineering , polymer chemistry , nanotechnology , composite material , chemistry , crystallography , natural rubber , physics , quantum mechanics , engineering
Patterning in evaporated polymer solutions based on amorphous polymers and chlorinated solvents has been investigated. Bilayered films patterned on two scales, i.e., 50 and 5 µm, are obtained. The addition of polyorganosilane/‐siloxane to solutions destroys the large‐scale pattern. Poly(ethylene glycol) promotes the formation of more dense close‐packed structures on the mesoscopic scale (≈5 µm). Short‐range and mesoscopic (liquid‐like) ordering of the honeycomb structures on the characteristic scale of 5 µm is revealed with the statistical analysis of SEM images. Physical mechanisms responsible for patterning are discussed.