Accession Number:
ADA459011
Title:
Miscibility and Viscoelastic Properties of Acrylic Polyhedral Oligomeric Silsesquioxane-Poly(methyl methacrylate) Blends (Postprint)
Descriptive Note:
Journal article
Corporate Author:
MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF CHEMICAL ENGINEERING
Personal Author(s):
Report Date:
2005-04-22
Pagination or Media Count:
11.0
Abstract:
Blends of polymethyl 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 Tg in the blends containing unmodified acrylic-POSS when compared with hydrogenated acrylic-POSS blends at the same loading. This difference in the degree of Tg plasticization was directly related to the degree of miscibility of the POSS and PMMA.
Descriptors:
Subject Categories:
- Polymer Chemistry
- Plastics
- Mechanics