# THERMAL AND MECHANICAL REINFORCEMENT OF POLY(METHYL METHACRYLATE) VIA INCORPORATION OF POLYHEDRAL OLIGOMERIC SILSESQUIOXANE

> Title: THERMAL AND MECHANICAL REINFORCEMENT OF POLY(METHYL METHACRYLATE) VIA INCORPORATION OF POLYHEDRAL OLIGOMERIC SILSESQUIOXANE Page Range: p.37-42 Author(s): Benhong Yang; Meng Li; Yun Wu; Xingliang Wan File size: Download the pdf (subscribers only) Buy the pdf (non-subscribers) Journal: Polymers and Polymer Composites...

Canonical URL: https://polymerjournals.com/thermal-and-mechanical-reinforcement-of-polymethyl-methacrylate-via-incorporation-of-polyhedral-oligomeric-silsesquioxane/
Published: 2013-01-01T00:00:00+00:00
Categories: Polymers and Polymer Composites

**Title: THERMAL AND MECHANICAL REINFORCEMENT OF POLY(METHYL METHACRYLATE) VIA INCORPORATION OF POLYHEDRAL OLIGOMERIC SILSESQUIOXANE**
 Page Range: p.37-42
 Author(s): Benhong Yang; Meng Li; Yun Wu; Xingliang Wan
 File size:
 ![](http://dload.gif) [Download the pdf](http://journals.asp?Page=111&JournalDownload=ON&JournalType=ppc&JournalIssue=ppc21-1&JournalID=101821&JIP=) (subscribers only)
 ![](http://handbuy.gif) Buy the pdf (non-subscribers)
 Journal: Polymers and Polymer Composites
 Issue Year: ppc
 Volume: 21
 Issue No: No.1

**Abstract**
 A series of inorganic/organic nanocomposites were prepared by blending cage-like, hydroxyl-bearing polyhedral oligomeric silsesquioxane (HO-POSS) with poly(methyl methacrylate) (PMMA) in THF solvent. Fourier transform infrared spectrophotometry (FTIR) and 29Si-nuclear magnetic resonance (29Si-NMR) were employed to characterize the structures of the HO-POSS/PMMA nanocomposites. Scanning electron microscope (SEM) images showed that the as-prepared composite films were smooth, and no severe aggregation of HO-POSS was observed when POSS content was less than 1.0 wt.%. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) results showed that the incorporation of small amount of nanosized HO-POSS reinforced the thermal stability of PMMA. When 1.0 wt.% of HO-POSS was incorporated into PMMA matrix, the Tg and Td increased by 28.8 degree C and 18.9 degree C, respectively, due to the strong interaction between POSS cages and PMMA chains. However, higher POSS contents (>2.0 wt.%) deteriorated the thermal and mechanical properties of the nanocomposites owing to the phase separation in the composite matrix caused by the aggregation of POSS cages. 21 Refs.

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