Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Tensile elongation of high-fluid polypropylene/ethylene-propylene rubber blends: Dependence on molecular weight of the components and propylene content of the rubber
Autore:
Naiki, M; Matsumura, T; Matsuda, M;
Indirizzi:
Ube Ind Ltd, Ube Res Lab, Ube, Yamaguchi 7558633, Japan Ube Ind Ltd Ube Yamaguchi Japan 7558633 ab, Ube, Yamaguchi 7558633, Japan Toyota Motor Co Ltd, Mat Engn Div 2, Toyota 4718572, Japan Toyota Motor CoLtd Toyota Japan 4718572 gn Div 2, Toyota 4718572, Japan
Titolo Testata:
JOURNAL OF APPLIED POLYMER SCIENCE
fascicolo: 1, volume: 83, anno: 2002,
pagine: 46 - 56
SICI:
0021-8995(20020103)83:1<46:TEOHPR>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
ALPHA-OLEFIN COPOLYMER; MECHANICAL-PROPERTIES; ISOTACTIC POLYPROPYLENE; POLYMER BLENDS; BINARY BLENDS; MORPHOLOGY; COMPATIBILITY; BEHAVIOR; PHASE;
Keywords:
low-molecular-weight poly(propylene) (PP); ethylene-propylene rubber; compatibility; elongation; morphology;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Naiki, M Ube Ind Ltd, Ube Res Lab, 1978-96 Kosushi, Ube, Yamaguchi 7558633, Japan Ube Ind Ltd 1978-96 Kosushi Ube Yamaguchi Japan 7558633 33, Japan
Citazione:
M. Naiki et al., "Tensile elongation of high-fluid polypropylene/ethylene-propylene rubber blends: Dependence on molecular weight of the components and propylene content of the rubber", J APPL POLY, 83(1), 2002, pp. 46-56

Abstract

We studied tensile behavior of low-molecular-weight (MW) polypropylene (PP)/ethylene-propylene rubber (EPR; 70/30) blends from the viewpoint of the MWs of PP and EPR and the compatibility between PP and EPR. The value of themelt flow rate of PP varied from 30 to 700 g/10 min at 230 degreesC. We studied the compatibility between PP and EPR by varying the propylene contentin EPR (27 and 68 wt %). At the initial elongation stage, crazes were observed in all blends. When blends included EPR with 27 wt % propylene, the elongation at break of the low-MW PP improved little. The blends with EPR and68 wt % propylene content were elongated further beyond their yielding points. The elongation to rupture was increased with increasing MW of EPR. Molecular orientation of the low-MW PP was manifested by IR dichroism measurements and X-ray diffraction patterns. The blends of low-MW PP and EPR could be elongated by the partial dissolution of EPR of high-MW in the PP amorphous phase. (C) 2002 John Wiley & Sons. Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 22:44:11