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Correlation between Surface Free Energy and Surface Constitution.

Author: Manoj K Chaudhury; George M Whitesides; HARVARD UNIV CAMBRIDGE MA Dept. of CHEMISTRY.
Publisher: Ft. Belvoir : Defense Technical Information Center, FEB 1992.
Edition/Format:   eBook : English
Database:WorldCat
Summary:
Self-assembled monolayers (SAMs) of alkylsiloxanes on elastomeric PDMS (polydimethylsiloxane) were used as model systems to study interactions between surfaces. Surface free energies of these chemically modified surfaces were estimated by measuring the deformations that resulted from the contact between small semispherical lenses and flat sheets of the elastomer under controlled loads. The measured surface free  Read more...
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Material Type: Internet resource
Document Type: Internet Resource
All Authors / Contributors: Manoj K Chaudhury; George M Whitesides; HARVARD UNIV CAMBRIDGE MA Dept. of CHEMISTRY.
OCLC Number: 227777666
Notes: Interim rept.
Description: 19 pages ; 23 x 29 cm

Abstract:

Self-assembled monolayers (SAMs) of alkylsiloxanes on elastomeric PDMS (polydimethylsiloxane) were used as model systems to study interactions between surfaces. Surface free energies of these chemically modified surfaces were estimated by measuring the deformations that resulted from the contact between small semispherical lenses and flat sheets of the elastomer under controlled loads. The measured surface free energies correlated with the surface chemical compositions of the SAMs and were commensurate with the values estimated from the measurements of contact angles. This study provides, for the first time, direct experimental evidence for the validity of estimates of the surface free energies of low-energy solids obtained from contact angles.

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