Poly(4‐vinylpyridine) Nanocrosslinked by Polyhedral Oligomeric Silsesquioxane

Abstract

Summary: Octa(propylglycidyl ether) polyhedral oligomeric silsesquioxane (OpePOSS) was used as the crosslinking agent to prepare the nanocrosslinked poly(4‐vinylpyridine) (P4VP) with POSS content up to 55.2 wt.‐%. The formation of the crosslinked structure is ascribed to the macromolecular reaction between pyridine rings of P4VP and epoxide groups of OpePOSS. The POSS‐crosslinked P4VP displayed enhanced glass transition temperatures (Tgs) and an improved thermal stability in terms of the results of thermal analysis.Crosslinking of poly(4‐vinylpyridine) with octa(propylglycidyl ether) polyhedral oligomeric silsesquioxane.magnified imageCrosslinking of poly(4‐vinylpyridine) with octa(propylglycidyl ether) polyhedral oligomeric silsesquioxane.

Poly(N-isopropylacrylamide) nanocrosslinked by polyhedral oligomeric silsesquioxane: Temperature-responsive behavior of hydrogels

“…N -isopropylacrylamide (NIPAM) was prepared in this lab by following the literature method [63]. Octa-(propylglycidyl ether) polyhedral oligomeric silsesquioxane (OpePOSS) (Scheme 2) was synthesized via the hydrosilylation reaction of H 8 Si 8 O 12 with allyl glycidyl ether as detailed elsewhere [64,65]. Poly(N -isopropylacrylamide) (PNIPAM) was synthesized via free radical polymerization of NIPAM initiated by AIBN.…”

Thermal and Surface Properties of Phenolic Nanocomposites Containing Octaphenol Polyhedral Oligomeric Silsesquioxane

“…Because POSS moieties can be readily incorporated into polymer matrices through copolymerization, many types of polymer/POSS nanocomposites have been synthesized. [1][2][3][4][5][6][7] Phenolic resins are currently irreplaceable materials because they exhibit excellent ablative properties, structural integrity, thermal stability, and solvent resistance. In general, phenolic resins have been practically neglected as materials for use in nanocomposites because they possess three-dimensional structures, even when the resins are not crosslinked, but some effort has been directed toward overcoming this drawback.…”

Polyhedral Oligomeric Silsesquioxane (POSS) Nanoscale Reinforcement of Thermosetting Resin from Benzoxazine and Bisoxazoline

“…Polymers incorporating POSS are becoming the focus of many studies because of the simplicity of processing and the excellent comprehensive properties of this class of hybrid materials. [9][10][11][12][13][14][15][16][17][18] Most previous studies have been concerned with common polymers, and few concern the modification of PBZ with POSS. Lee et al [19,20] reported the synthesis and properties of a benzoxazine-containing POSS (BZ-POSS) monomer, Summary: The reaction between octaaminophenyl polyhedral oligomeric silsesquioxane (OAPS) and 2,2 0 -(1,3-phenylene)-bis(4,5-dihydro-oxazoles) (PBO) over different temperature ranges was confirmed by FT-IR spectroscopy.…”