THE VISCOELASTIC PROPERTIES OF MONOLAYERS OF POLYMERIC AMPHIPHILES WITH MESOGENIC GROUPS

Authors
PENG JB BARNES GT ABRAHAM BM
Citation
Jb. Peng et al., THE VISCOELASTIC PROPERTIES OF MONOLAYERS OF POLYMERIC AMPHIPHILES WITH MESOGENIC GROUPS, Thin solid films, 242(1-2), 1994, pp. 254-257
Citations number
14
Categorie Soggetti
Physics, Applied","Material Science","Physics, Condensed Matter
Journal title
Thin solid films → ACNP
ISSN journal
00406090
Volume
242
Issue
1-2
Year of publication
1994
Pages
254 - 257
Database
ISI
SICI code
0040-6090(1994)242:1-2<254:TVPOMO>2.0.ZU;2-H
Abstract
The viscoelastic behavior of monolayers of three polymeric amphiphiles with hydrophobic mesogenic side chains was observed by dynamic measur ements. The copolymer with a long flexible and hydrophilic main chain between side chains exhibited very low values of viscosity and shear m odulus at all accessible surface pressures. For the other two polymers with shorter segments of main chain between side chains these values increased steeply with compression through areas lower than 0.4 nm2 pe r monomer, reaching viscosities as high as 1 N s m-1 and shear moduli of 10 mN m-1.