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Titolo:
Simulation of polyethylene thin films composed of various chain lengths
Autore:
Doruker, P;
Indirizzi:
Bogazici Univ, Dept Chem Engn, TR-80815 Istanbul, Bebek, Turkey Bogazici Univ Istanbul Bebek Turkey TR-80815 0815 Istanbul, Bebek, Turkey Bogazici Univ, Ctr Polymer Res, TR-80815 Istanbul, Bebek, Turkey Bogazici Univ Istanbul Bebek Turkey TR-80815 0815 Istanbul, Bebek, Turkey
Titolo Testata:
POLYMER
fascicolo: 2, volume: 43, anno: 2002,
pagine: 425 - 430
SICI:
0032-3861(200201)43:2<425:SOPTFC>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
HIGH COORDINATION LATTICE; FULLY ATOMISTIC MODELS; ISOMERIC STATE CHAINS; MONTE-CARLO; AMORPHOUS POLYETHYLENE; POLYMER MELTS; SURFACE; NANOFIBER;
Keywords:
polymer films; high-coordination lattice; interfaces;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Doruker, P Bogazici Univ, Dept Chem Engn, TR-80815 Istanbul, Bebek, TurkeyBogazici Univ Istanbul Bebek Turkey TR-80815 ul, Bebek, Turkey
Citazione:
P. Doruker, "Simulation of polyethylene thin films composed of various chain lengths", POLYMER, 43(2), 2002, pp. 425-430

Abstract

Polyethylene thin films are simulated using a coarse-grained on-lattice Monte Carlo technique. Properties of free-standing films, which are made up of either C-50, C-100 or C-316 chains, are analyzed in the melt phase at 509K. As a result of increasing molecular weight, the following observations are made: (i) bulk density of the films increases; (ii) there is a higher degree of parallel orientation of bonds at the surface and a broader region over which this orientation survives; (iii) the decrease in the radius of gyration of the chains at the surface becomes more significant and (iv) parallel orientation of the chains at the surface is enhanced. Moreover, mixed films that contain both C-50 and C-100 chains are simulated. In these mixedfilms, the properties of C-100 chains do not change, whereas the orientation of C-50 chains and bonds is higher in the presence of longer chains. (C)2001 Elsevier Science Ltd. All rights reserved.

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Documento generato il 03/04/20 alle ore 08:05:40