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Titolo:
Rheological, morphological, mechanical, and barrier properties of PP/EVOH blends
Autore:
Yeo, JH; Lee, CH; Park, CS; Lee, KJ; Nam, JD; Kim, SW;
Indirizzi:
Kyonggi Univ, Dept Chem Engn, Suwon 442760, South Korea Kyonggi Univ Suwon South Korea 442760 em Engn, Suwon 442760, South Korea Seoul Natl Univ, Dept Chem Engn, Seoul 151742, South Korea Seoul Natl Univ Seoul South Korea 151742 Engn, Seoul 151742, South Korea Sung Kyun Kwan Univ, Dept Polymer Sci & Engn, Suwon 440746, South Korea Sung Kyun Kwan Univ Suwon South Korea 440746 , Suwon 440746, South Korea
Titolo Testata:
ADVANCES IN POLYMER TECHNOLOGY
fascicolo: 3, volume: 20, anno: 2001,
pagine: 191 - 201
SICI:
0730-6679(200123)20:3<191:RMMABP>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
INCOMPATIBLE POLYMER BLENDS; LAMINAR MORPHOLOGY; POLY(ETHYLENE-CO-VINYL ALCOHOL); PERMEABILITY; OXYGEN; POLY(ETHYLENE-TEREPHTHALATE); EXTRUSION; PHASE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Kim, SW Kyonggi Univ, Dept Chem Engn, Suwon 442760, South Korea Kyonggi Univ Suwon South Korea 442760 Suwon 442760, South Korea
Citazione:
J.H. Yeo et al., "Rheological, morphological, mechanical, and barrier properties of PP/EVOH blends", ADV POLY T, 20(3), 2001, pp. 191-201

Abstract

Using the biaxially oriented film process, polypropylene (PP)/ethylene-vinyl alcohol copolymer (EVOH) blends with an improved barrier property could be obtained by generating a laminar structure of the dispersed phase in thematrix phase. This laminar morphology, induced by biaxial orientation, wasfound to result in a significant increase in the oxygen barrier property of PP/EVOH (85/15) blends by about 10 times relative to the pure PP. In thisstudy, compatibility in the PP/EVOH blend system was evaluated by investigating the influence of compatibilizer on the rheological, morphological, and mechanical properties of the blends. In addition, the effects of compatibilizer content, draw ratio, and draw temperature on the oxygen permeabilityand morphology of biaxially drawn blend films were also studied. It was revealed that an optimum amount of compatibilizer, maleic anhydride grafted PP, should be used to improve the barrier property of the PP/EVOH blends with a well-developed laminar structure. The draw ratio and draw temperature had a significant influence on the permeability of the blends. The blend films exhibited a more pronounced laminar structure when the blends were stretched biaxially under processing conditions of higher draw ratio and draw temperature, resulting in higher barrier properties. (C) 2001 John Wiley & Sons, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 23:47:39