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Titolo:
Polymer diffusion and mechanical properties of films prepared from crosslinked latex particles
Autore:
Pinenq, P; Winnik, MA; Ernst, B; Juhue, D;
Indirizzi:
Univ Toronto, Dept Chem, Toronto, ON M5S 3H6, Canada Univ Toronto TorontoON Canada M5S 3H6 Chem, Toronto, ON M5S 3H6, Canada ELF Atochem, Ctr Applicat Levallois, CERDATO, F-92300 Levallois, France ELF Atochem Levallois France F-92300 CERDATO, F-92300 Levallois, France
Titolo Testata:
JOURNAL OF COATINGS TECHNOLOGY
fascicolo: 903, volume: 72, anno: 2000,
pagine: 47 - 63
SICI:
0361-8773(200004)72:903<47:PDAMPO>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
NONRADIATIVE ENERGY-TRANSFER; CROSS-LINKING; GEL POINT; VISCOELASTICITY; INTERFACE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Winnik, MA Univ Toronto, Dept Chem, 80 St George St, Toronto, ON M5S 3H6, Canada Univ Toronto 80 St George St Toronto ON Canada M5S 3H6 , Canada
Citazione:
P. Pinenq et al., "Polymer diffusion and mechanical properties of films prepared from crosslinked latex particles", J COAT TECH, 72(903), 2000, pp. 47-63

Abstract

We describe energy transfer (ET) measurements to follow polymer diffusion,as well as oscillatory dynamic mechanical measurements and tensile measurements, on films prepared from structures and unstructured latex particles consisting of a copolymer of butyl methacrylate and butyl acrylate with a T-g of 20 degrees C. Structure was introduced in the form a low level (1 mol%) of crosslinking, using seeded semi-continuous emulsion polymerization to control the locus of the crosslinking agent in the particles. Linear dynamic mechanical measurements showed the G' and G" were sensitive to the particle morphology, with particular sensitivity exhibited by the elastic modulusG'. The tensile properties were less sensitive to particle morphology, with particular sensitivity exhibited by the elastic modulus G'. The tensile properties were less sensitive to particle morphology; sufficient polymer diffusion occurs during film formation for the films to acquire strength and toughness. As expected, crosslinking increases strength but decreases elongation to break. Some interesting compromises could be found through controlof the location of the crosslinked regions of the film.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 16/07/20 alle ore 18:53:45