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Titolo:
Evaluation of the network parameter in aliphatic poly(urethane dimethacrylate)s by dynamic thermal analysis
Autore:
Barszczewska-Rybarek, I; Gibas, M; Kurcok, M;
Indirizzi:
Silesian Tech Univ, Dept Phys Chem & Technol Polymers, PL-44100 Gliwice, Poland Silesian Tech Univ Gliwice Poland PL-44100 ers, PL-44100 Gliwice, Poland Inst Plast & Paint Ind, PL-44100 Gliwice, Poland Inst Plast & Paint Ind Gliwice Poland PL-44100 PL-44100 Gliwice, Poland
Titolo Testata:
POLYMER
fascicolo: 9, volume: 41, anno: 2000,
pagine: 3129 - 3135
SICI:
0032-3861(200004)41:9<3129:EOTNPI>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Keywords:
poly(urethane dimethacrylate); network parameter; dynamic mechanical thermal analysis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
13
Recensione:
Indirizzi per estratti:
Indirizzo: Gibas, M Silesian Tech Univ, Dept Phys Chem & Technol Polymers, Ul M Strzody 9, PL-44100 Gliwice, Poland Silesian Tech Univ Ul M Strzody 9 Gliwice Poland PL-44100 Poland
Citazione:
I. Barszczewska-Rybarek et al., "Evaluation of the network parameter in aliphatic poly(urethane dimethacrylate)s by dynamic thermal analysis", POLYMER, 41(9), 2000, pp. 3129-3135

Abstract

The dicarbamates obtained from monomethacrylates of oligoethylene glycols and aliphatic diisocyanates were polymerised free radically to form crosslinked polymers consisting of primary chains, crosslinks and pendant side chains bearing unreacted methacrylate groups. The polymers were examined by dynamic mechanical thermal analysis (DMTA) to yield values of glass transition temperature and storage modulus. The latter enabled the network parameters for individual polymers to be evaluated. These have been found to be low when compared with molecular weights of the monomers and can be attributed to intermolecular interactions between the pendant chains and the crosslinks involving urethane linkages. This finding is supported by the H-1 NMR experiments on monomers in solution. (C) 2000 Elsevier Science Ltd. All rightsreserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/07/20 alle ore 01:38:39