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Titolo:
Gelation of linear low-density polyethylenes in organic solvents and temperature dependence of polymer solvent interaction
Autore:
Serizawa, H; Okabe, M;
Indirizzi:
Kanazawa430292,echnol, Grad Sch Engn, Dept Chem Technol, Atsugi, Kanagawa 2 Kanazawa Inst Technol Atsugi Kanagawa Japan 2430292 l, Atsugi, Kanagawa 2
Titolo Testata:
KOBUNSHI RONBUNSHU
fascicolo: 5, volume: 56, anno: 1999,
pagine: 328 - 334
SICI:
0386-2186(1999)56:5<328:GOLLPI>2.0.ZU;2-5
Fonte:
ISI
Lingua:
JPN
Soggetto:
THERMALLY REVERSIBLE GEL; MELTING TEMPERATURE;
Keywords:
linear low-density polyethylene; ethylene-propylene random copolymer; thermally reversible gel; inverse gas chromatography; polymer-solvent interaction parameter; gel point; junction size;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
6
Recensione:
Indirizzi per estratti:
Indirizzo: Serizawa, H KanazawaAtsugi,echnol, Grad Sch Engn, Dept Chem Technol, 1030 Shimo Ogino, Kanazawa Inst Technol 1030 Shimo Ogino Atsugi Kanagawa Japan 2430292
Citazione:
H. Serizawa e M. Okabe, "Gelation of linear low-density polyethylenes in organic solvents and temperature dependence of polymer solvent interaction", KOBUNSH RON, 56(5), 1999, pp. 328-334

Abstract

Linear low-density polyethylene (LLDPE) and ethylene-propylene (EP) randomcopolymer in methylcyclohexane and isooctane convert to thermoreversible gels. In order to examine the correlation between the gel point (T-gel) and polymer/solvent interaction parameter (chi(12)), the chi(12) value was measured as a function of temperature (T) using an inverse gas chromatography (IGC). A plot of chi(12) vs. 1/T for each, sample was divided into three linear regions-with different slopes, and gelation took place at a linear region with the most steep slope. This region corresponded to that of crystallization of polymers in methylcyclohexane and isooctane. The size of crystalline junction zeta depended on the chi(12) value measured near the temperature T-gel, and increased with increasing chi(12).

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Documento generato il 04/07/20 alle ore 14:36:37