Journal
POLYMER
Volume 51, Issue 17, Pages 3948-3955Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2010.06.033
Keywords
POSS; Click chemistry; Polybenzoxazine
Categories
Funding
- National Science Council, Taiwan, Republic of China [NSC97-2221-E-110-013-MY3, NSC98-2221-E-110-006, NSC 98-2120-M-009-001]
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We prepared a new class of polybenzoxazine-POSS nanocomposites with network structures through thermal curing of multifunctional benzoxazine groups of PUSS (OBZ-POSS), which was synthesized from octa-azido functionalized PUSS (OVBN3-POSS) with 3,4-dihydro-3-(prop-2-ynyl)-2H-benzoxazine (P-pa) via a click reaction. Incorporation of the silsesquioxane core into the polybenzoxazine matrix could significantly enhance the thermal stability of these hybrid materials. For these nanocomposites, the PUSS nanoparticles in the hybrids were improved their thermal properties with 2,2-bis(3,4-dihydro-3-methyl-2H-1,3-benzoxazine)propane (BA-m) and P-pa polybenzoxazine, analyzed via TGA analyses. In addition, the incorporation of the POSS led to the formation of an inorganic protective layer on the nanocomposite's surface. Contact angle data provided positive evidence to back up this hypothesis that the incorporation of the PUSS units would decrease the surface energy property. In addition, the low glass transition temperature of poly(4-vinyl pyridine) and polycarbonate thin films, which lack liquid resistance, could possess low surface free energy after modification with OBZ-POSS due to low temperature curing of this new compound. (C) 2010 Elsevier Ltd. All rights reserved.
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