Miscibility and Viscoelastic Properties of Acrylic Polyhedral Oligomeric Silsesquioxane-Poly(methyl methacrylate) Blends (Postprint)

Abstract

Blends of poly(methyl methacrylate) (PMMA) with two acrylic polyhedral oligomeric silsesquioxanes (POSS) were analyzed to determine the effect of well-dispersed POSS nanoparticles on the thermo-mechanical properties of PMMA. Differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), and melt rheology all showed that the dispersed POSS behaved like a plasticizer. Differential scanning calorimetry (DSC) showed a larger drop in the glass transition temperature T(g) in the blends containing unmodified acrylic-POSS when compared with hydrogenated acrylic-POSS blends at the same loading. This difference in the degree of T(g) plasticization was directly related to the degree of miscibility of the POSS and PMMA.

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Document Details

Document Type
Technical Report
Publication Date
Apr 22, 2005
Accession Number
ADA459011

Entities

People

  • Edward T. Kopesky
  • Gareth McKinley
  • Robert E. Cohen
  • Timothy S. Haddad

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics
  • C4I
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Alkenes
  • Crystal Structure
  • Diffraction
  • Glass Transition Temperature
  • Materials
  • Materials Science
  • Mixtures
  • Nanoparticles
  • Phase Separation
  • Plasticizers
  • Polymers
  • Transition Temperature
  • Transitions
  • X Rays
  • X-Ray Diffraction

Fields of Study

  • Materials science

Readers

  • Polymer Science and Technology

Technology Areas

  • Biotechnology