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High performance silanized silica/epoxy nanocomposites were prepared through mixing epoxy, tetraethyl orthosilicate (TEOS), (3-aminopropyl)trimethoxysilane (APTMS) and ammonia solution at 50 °C. This all-in-one “Solvent-Free One-Pot Synthesis” results in nanocomposites with uniform dispersion of oval shaped silica nanoparticles and strong adhesion between silica and epoxy matrix. The influence of...
Multi-walled carbon nanotube (MWCNT)/polyimide composite films were fabricated through electrophoretic deposition (EPD) of MWCNT-polyamic acid colloidal suspension which was derived from carboxylated-MWCNTs and poly(pyromellitic dianhydride-co-4,4′-oxydianiline) (PMDA-ODA). Under electric field, both negatively charged MWCNTs and PMDA-ODA colloid particles migrate onto a positively charged anode simultaneously,...
The influence of hydrophobic interaction between poly[(R)-3-hydroxybutyrate] blocks on block-selected inclusion complexation between amphiphilic poly(ethylene oxide)-poly[(R)-3-hydroxybutyrate]-poly(ethylene oxide)) (PEO-PHB-PEO) triblock copolymers and α-cyclodextrin (α-CD) or γ-cyclodextrin (γ-CD) was studied by X-ray diffraction, differential scanning calorimetry (DSC), FTIR and 1 H NMR...
Poly(3-carboxypropylmethylsiloxane) (PSI100) and poly(3-carboxypropylmethylsiloxane-co-dimethylsiloxane) (PSIX, X=76,60,41,23 or 9, denoting the mole percentage of 3-carboxypropylmethylsiloxane unit in the copolymer) were synthesized and characterized. PSI9 is immiscible with both poly(4-vinylpyridine) (P4VPy) and poly(2-vinylpyridine) (P2VPy). The other PSIX samples are miscible with both P4VPy and...
Two novel polyelectrolyte complexes (PEC) have been synthesized using pendant type imidazolinium organosilicon copolymers with poly(sodium styrene sulfonate). These PEC dissolved in a ternary solvent system and displayed high thermal stability. Turbimetry and conductometry measurements showed PEC formation to be a stoichiometric reaction. The formation of PEC was decreased with increasing polyion...
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