Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Gas permeability modification of polyolefin films induced by D-limonene swelling
Autore:
Togawa, J; Kanno, T; Horiuchi, J; Kobayashi, M;
Indirizzi:
Kitami Inst Technol, Dept Chem Syst Engn, Kitami, Hokkaido 0908507, Japan Kitami Inst Technol Kitami Hokkaido Japan 0908507 Hokkaido 0908507, Japan
Titolo Testata:
JOURNAL OF MEMBRANE SCIENCE
fascicolo: 1, volume: 188, anno: 2001,
pagine: 39 - 48
SICI:
0376-7388(20010630)188:1<39:GPMOPF>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
LOW-DENSITY POLYETHYLENE; POLYMERIC SEALANT FILMS; ABSORPTION; VOLATILES; SORPTION; VAPOR;
Keywords:
polyolefin films; D-limonene vapor absorption; film crystallinity; gas permeability enhancement; CO2/N-2 permselectivity;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Kobayashi, M Kitami Inst Technol, Dept Chem Syst Engn, 165 Koen Cho, Kitami, Hokkaido 0908507, Japan Kitami Inst Technol 165 Koen Cho Kitami HokkaidoJapan 0908507
Citazione:
J. Togawa et al., "Gas permeability modification of polyolefin films induced by D-limonene swelling", J MEMBR SCI, 188(1), 2001, pp. 39-48

Abstract

Gas permeability (H-2, O-2, N-2, CO2, C2H4, and C3H6) and permselectivity against nitrogen in the polyolefin films (LDPE, HDPE, Metallocene PE, EVA5,PP, and PMP) strongly influenced by the swelling of D-limonene (DL) absorption, were studied, All the gas permeability obtained in these films were commonly increased by increasing the amount of D-limonene absorbed in the films (C-DL: cm(3) STP/cm(3)), which indicated an especially drastic enhancement of CO2 permeability in low density polyethylene (LDPE) from 15.2 to 67.8 Barrer (1 Barrer = (x10(-10)) cm(3) STPc m/cm(2) cmHg s) at C-DL = 2.3. Based on experimental evidences that bras permeability was proportionally increased with increasing C-DL, whereas the film crystallinity of LDPE evaluated with method of a wide-angle XRD decreased, it was concluded that the gas permeability enhancement was caused by the film crystallinity decay due to D-limonene sorption. On the permselectivity against, nitrogen obtained for all the gases, CO2, C3H6 and C2H4 were characterized by a positive enhancement, and H-2 and O-2 a slight negative enhancement. The effect of D-limonene absorption into the polyolefin films on the CO2 permeation was interestingly characterized by a simultaneous enhancement of permeability (P) and CO2/N-2 permselectivity (alpha (co2)), typically indicating from P = 15.2 to67.8 Barrer and from alpha (co2) = 19 to 26.1 for LDPE. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/10/20 alle ore 01:50:54