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Titolo:
Characterization of new acrylic bone cement based on methyl methacrylate/1-hydroxypropyl methacrylate monomer
Autore:
Pascual, B; Goni, I; Gurruchaga, M;
Indirizzi:
EHU, UPV, Fac Quim, Dept Ciencia & Tecnol Polimeros, San Sebastian, Spain EHU San Sebastian Spain iencia & Tecnol Polimeros, San Sebastian, Spain
Titolo Testata:
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH
fascicolo: 4, volume: 48, anno: 1999,
pagine: 447 - 457
SICI:
0021-9304(199908)48:4<447:CONABC>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
POLYMERIZATION; HIP; FAILURE; RESINS;
Keywords:
acrylic bone cement; residual monomer; polymerization shrinkage; dynamic mechanical thermal analysis; mechanical properties;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
38
Recensione:
Indirizzi per estratti:
Indirizzo: Gurruchaga, M EHU, UPV, Fac Quim, Dept Ciencia & Tecnol Polimeros, San Sebastian, Spain EHU San Sebastian Spain l Polimeros, San Sebastian, Spain
Citazione:
B. Pascual et al., "Characterization of new acrylic bone cement based on methyl methacrylate/1-hydroxypropyl methacrylate monomer", J BIOMED MR, 48(4), 1999, pp. 447-457

Abstract

New formulations of acrylic bone cement based on methyl methacrylate/1-hydroxypropyl methacrylate (MMA/HPMA) monomers were developed with the purposeof obtaining more ductile materials with reduced polymerization shrinkage. In this way, the ductility of such materials increased, but the introduction of high percentages of the hydrophilic component produced an important decrease in Young's modulus and strength. To ascertain the reason for the deterioration of the tensile parameters, an analysis by scanning electron microscopy of these formulations was carried out; it revealed poor adhesion between the matrix and poly(MMA) beads. We also observed that the polymerization shrinkage increased as the amount of hydrophilic monomer in the formulation decreased, and the 50% (v/v) HPMA modified bone cement compensated forthis volume reduction with its water uptake swelling. Measurements taken on the setting time and polymerization exotherm showed a decrease in the former and an increase in the latter, because of the introduction of a more reactive monomer in the bone cement formulation. (C) 1999 John Wiley & Sons, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 12/07/20 alle ore 05:32:02