Synthesis of PVDF-based polymers is a core area of expertise at PSU
Sigma-Aldrich Online Catalog Product List: Poly(vinylidene fluoride) (PVDF)
Synthesis and Characterization of Poly(vinylidene …
A biocompatible poly(vinylidene) difluoride (PVDF) based film has been prepared by in situ precipitation of calcium phosphate precursors. Such films were surface absorbed with two essential oils namely eucalyptus and tea tree oil. Physico-chemical characterization of the composite film revealed excellent stability of the film with 10% loading of oils in the PVDF matrix. XRD, FTIR and FESEM measurements confirmed the presence of hydroxyapatite and octacalcium phosphate in the PVDF matrix which showed predominantly beta phase. Strong bactericidal activity was observed with very low minimum bactericidal concentration (MBC) values on both E. coli and S. aureus. The composite films also resisted biofilm formation as observed by FESEM. The release of essential oils from the film showed an initial burst followed by a very slow release over a period of 24 hours. Antibacterial action of the film was found to be primarily due to the action of essential oils which resulted in leakage of vital fluids from the microorganisms. Both necrotic and apoptotic morphologies were observed in bacterial cells. Biocompatibility studies with the composite films showed negligible cytotoxicity to mouse mesenchymal and myoblast cells at MBC concentration.
Penn State University is the leading authority in the discovery and synthesis of high-quality polymers for electrocaloric applications. The laboratory has a full set of capabilities that are ideally suited for PVDF-based polymers synthesis. The typical sample size is on the grams scale.
Synthesis of poly(vinylidene fluoride) (PVdF ..
This contribution demonstrates the use of a novel photoinduced grafting approach in the fabrication of anhydrous proton conducting poly(vinylidene fluoride) (PVDF) membranes. The process basically involves grafting of styrene onto cast PVDF films under UV light, subsequent sulfonation and triazole doping. Degree of grafting was explored as a function of UV irradiation time, as varied from 0.5 h to 8 h. The synthesized graft copolymers were characterized by 1H NMR and FT-IR spectroscopic analyses. Their thermal properties were examined by Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC) measurements. To assess the potential of the membranes to be used in fuel cell applications, their ion exchange capacities, water uptakes, and hydration numbers were measured and correlated with degree of grafting. Anhydrous proton conducting properties of 1H-1,2,4-triazole-doped PVDF-g-PSSA polymers were studied. PVDF-g-PSSA(Tri)2 with a degree of grafting of 50.8 % showed a maximum water-free proton conductivity of approximately 5 × 10−2 mS/cm at 150 °C.
Polymeric Gate Dielectric Materials
Polymers | An Open Access Polymer Science Journal …
Polymers, an international, peer-reviewed Open Access journal.
Polymer Nanocomposite of PVDF/Organoclay-Copper Nanoparticles hybrid: Synthesis and Characterization ☆
C | An Open Access Carbon Research Journal from MDPI
Title. Synthesis and performance evaluation of thin film PPy-PVDF multilayer electroactive polymer actuators
MATERIALS EXPRESS - American Scientific Publishers
Synthesis and characterization of polymer electrolyte membranes based on PVDF and styrene via photoinduced grafting
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