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Titolo:
MIXED MONOLAYERS OF POLY(VINYL STEARATE) WITH ITS MONOMER
Autore:
PENG JB; BARNES GT;
Indirizzi:
UNIV QUEENSLAND,DEPT CHEM BRISBANE QLD 4072 AUSTRALIA
Titolo Testata:
Colloids and surfaces. A, Physicochemical and engineering aspects
, volume: 102, anno: 1995,
pagine: 75 - 79
SICI:
0927-7757(1995)102:<75:MMOPSW>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
SURFACE-PRESSURE-GRADIENTS; VINYL STEARATE;
Keywords:
MIXED MONOLAYERS; POLYMER MONOLAYERS; SURFACE PRESSURE GRADIENTS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
8
Recensione:
Indirizzi per estratti:
Citazione:
J.B. Peng e G.T. Barnes, "MIXED MONOLAYERS OF POLY(VINYL STEARATE) WITH ITS MONOMER", Colloids and surfaces. A, Physicochemical and engineering aspects, 102, 1995, pp. 75-79

Abstract

A marked gradient in surface pressure develops in monolayers of poly(vinyl stearate) (PVS) during compression. The gradient varies with position along the trough: it is large in the region close to the compression barrier and also near the other end of the trough, but relativelysmall at intermediate positions. In mixed monolayers of PVS with vinyl stearate (VS) the gradient is large and almost independent of the composition until the VS content exceeds about one third. Further increases in the proportion of VS cause decreases in gradient, and at VS mole fractions greater than about 0.65 the gradient is negligible. With pure PVS monolayers the gradient, once formed, remains constant for at least 90 min, but in films containing VS the gradient slowly decreases. The mixed films exhibit negative deviations in the area per repeat unit when compared to the averaged areas, with the maximum deviation occurring at a composition of 50 mol% (calculated on the basis of the PVS repeat unit). The fracture pressure is a function of the compositionof the monolayer, with the maximum at about 90 mol% of PVS.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 15/07/20 alle ore 14:57:35