Synthesis, morphology, and properties of hydroxyl Terminated-POSS/polyimide low-k nanocomposite films

Wahab, Md Abdul, Mya, Khine Yi and He, Chaobin (2008) Synthesis, morphology, and properties of hydroxyl Terminated-POSS/polyimide low-k nanocomposite films. Journal of Polymer Science Part A: Polymer Chemistry, 46 17: 5887-5896. doi:10.1002/pola.22906


Author Wahab, Md Abdul
Mya, Khine Yi
He, Chaobin
Title Synthesis, morphology, and properties of hydroxyl Terminated-POSS/polyimide low-k nanocomposite films
Formatted title
Synthesis, morphology, and properties of hydroxyl Terminated-POSS/polyimide low-k nanocomposite films
Journal name Journal of Polymer Science Part A: Polymer Chemistry   Check publisher's open access policy
ISSN 0887-624X
1099-0518
Publication date 2008-09-01
Sub-type Article (original research)
DOI 10.1002/pola.22906
Volume 46
Issue 17
Start page 5887
End page 5896
Total pages 10
Place of publication Hoboken, NJ, United States
Publisher John Wiley & Sons
Language eng
Formatted abstract
Polyhedral oligomeric silsequioxane (POSS), having eight hydroxyl groups for the preparation of nanocomposites with polyimide (PI) was synthesized by the direct hydrosilylation of allyl alcohol with octasilsesquioxane (Q8M8H) with platinum divinyltetramethyl disiloxane Pt(dvs) as a catalyst. The structure of allyl alcohol terminated-POSS (POSS-OH) was confirmed by FTIR, NMR, and XRD. A high performance, low-k PI nanocomposite from pyromellitic dianhydride (PMDA)-4,4'-oxydianiline (ODA) polyamic acid cured with POSS-OH was also successfully synthesized. The incorporation of POSS-OH into PI matrix reduced dielectric constant of PI without loosing mechanical properties. Furthermore, the effects of POSS-OH on the morphology and properties of the PI/POSS-OH nanocomposites were investigated using UV–vis, FTIR, XRD, SEM, AFM, transmission electron microscope (TEM), TGA, and contact angle. The homogeneous dispersion of POSS particles was confirmed by SEM, AFM, and TEM. The nanoindentation showed that the modulus increased upon increasing the concentration of POSS-OH in PI, whereas the hardness did not increase very much with respect to loading of POSS, due to soft-interphase around POSS molecules in the resulting nanocomposites. Overall results demonstrated the nanometer-level integration of the polymer and POSS-OH.
Keyword Dielectric constants
Films
Hybrids
Nanocomposites
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: ERA 2012 Admin Only
Australian Institute for Bioengineering and Nanotechnology Publications
 
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