Polyisobutylene-toughened poly(methyl methacrylate): III. PMMA-l-PIB networks as bone cements

J Biomater Sci Polym Ed. 1993;4(5):445-9. doi: 10.1163/156856293x00113.

Abstract

A series of novel polyisobutylene (PIB)-toughened poly(methyl methacrylate) (PMMA) networks consist of rubbery PIB domains covalently bonded to a glassy PMMA matrix. Materials containing 8.5-17 wt.% PIB (Mn = 18,000 g/mol) in a PMMA matrix (PIB/PMMA) were evaluated to assess their feasibility as the powder component along with methyl methacrylate (MMA) as the liquid component in a standard powder/liquid bone cement formulation. A standard ISO four-point bend test, commonly used for testing bone cements, was employed to investigate flexural properties. The mixing time and powder/liquid (P/L) ratio were studied to formulate novel PIB/PMMA cements for optimum toughness. Appropriate formulations led to improved toughness while adequate flexural strength and modulus were maintained. An experimental PIB/PMMA-system exhibited approximately 57 MPa flexural strength and approximately 2000 MPa flexural modulus.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Biocompatible Materials / chemistry*
  • Bone Cements / chemistry*
  • Methylmethacrylates / chemistry*
  • Polyenes / chemistry*
  • Polymers / chemistry*
  • Stress, Mechanical

Substances

  • Biocompatible Materials
  • Bone Cements
  • Methylmethacrylates
  • Polyenes
  • Polymers
  • polyisobutylene