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Titolo:
Effect of different copolymers (hydrogenated and non-hydrogenated, with different molecular weights and different content of styrene] in the compatibilization of PS+PP(80+20) polyblend
Autore:
Sciamanna, R; Arribas, G; Albano, C; Horie, E; Soto, B;
Indirizzi:
Cent Univ Venezuela, Fac Ingn, Escuela Ingn Quim, Caracas 1041A, VenezuelaCent Univ Venezuela Caracas Venezuela 1041A im, Caracas 1041A, Venezuela
Titolo Testata:
MATERIALS RESEARCH INNOVATIONS
fascicolo: 5-6, volume: 4, anno: 2001,
pagine: 311 - 321
SICI:
1432-8917(200104)4:5-6<311:EODC(A>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
POLYPROPYLENE/POLYSTYRENE BLENDS; POLYSTYRENE/POLYPROPYLENE BLENDS; MECHANICAL-PROPERTIES; MORPHOLOGY;
Keywords:
polymer bonds; compatibilization; triblock copolymers; interfacial adhesion; polystyrene; polypropylene;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Sciamanna, R Cent Univ Venezuela, Fac Ingn, Escuela Ingn Quim, Apartado 48181,Los Chaguaramos, Caracas 1041A, Venezuela Cent Univ Venezuela Apartado 48181,Los Chaguaramos Caracas Venezuela 1041A
Citazione:
R. Sciamanna et al., "Effect of different copolymers (hydrogenated and non-hydrogenated, with different molecular weights and different content of styrene] in the compatibilization of PS+PP(80+20) polyblend", MAT RES INN, 4(5-6), 2001, pp. 311-321

Abstract

We have studied the effect of the addition of different compositions of several styrene / butadiene / styrene (SBS) triblock copolymers, hydrogenatedand non-hydrogenated, with different molecular weights and different content of styrene, on the PS + PIP (80+20) polyblend. We have determined the influence of these parameters on thermal and mechanical properties as well ason the observed morphology. As the composition of the hydrogenated copolymer or the copolymer with a similar content of styrene and butadiene was increased, the dispersion of particles increased, lowering remarkably their size and producing this way a better interfacial adhesion in the blend. Excluding the copolymer with similar content of styrene and butadiene in its structure, the rest of the copolymers show a strong tendency to form micelles or mesophases in the matrix as the amount of copolymer increases, improvingsome mechanical properties such as impact strength but deteriorating others like the yield and break stresses. On the other hand, the presence of compatibilizers, at any composition, does not have any effect on the thermal parameters of the blend. Nevertheless, the presence of PS, amorphous and themajority component in the blend, affects the crystallization process of PP, enhancing in a wide temperature range (from 125 degreesC to 40 degreesC) its crystallization process.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/07/20 alle ore 15:20:36