نتایج جستجو برای: vinyl alcohol copolymer
تعداد نتایج: 137683 فیلتر نتایج به سال:
Abstract A biodegradable thermoplastic polymer has been formulated by solubilizing Murexide (M) salts in a commercial vinyl alcohol copolymer (HVA). The employed as self-healing filler with the aim to impart auto-repair ability material. Three different percentages (1, 3, and 5 mass%) of have solubilized HVA evaluate effect concentration on thermal properties resulting polymeric materials. samp...
The present review aims to give a closer look of hydrogels based on chitosan and poly (vinyl alcohol) and to discuss their potential biomedical applications in drug delivery system. Various investigations based on chitosan/poly (vinyl alcohol) carried out recently by researchers have been reported in this review. Moreover different chemical and physical crosslinking methods used for hydrogels f...
Homogeneous membranes were prepared by blending poly (acrylic acid) with poly (vinyl alcohol). These blend membranes were evaluated for the selective separation of alcohols from toluene by pervaporation. The flux and selectivity of the membranes were determined both as a function of the blend composition and of the feed mixture composition. The results showed that a polymer blending method coul...
Poly(vinyl alcohol) hydrogels have a significant range of mechanical properties based on compositional and processing parameters. Biodegradable hydrogels based on Poly(vinyl alcohol) were prepared for controlled drug delivery of bovine serum albumin. These hydrogels were synthesized by a crosslinking technique using glutaraldehyde as a crosslinker. Hydrogels containing drug were prepared by dir...
Formulations based on mineral fillers and polymeric matrices of different nature were studied to obtain halogen-free flame retardant compounds (HFFR) for cable applications. The work was carried out by comparing fire-retardant natural origin with synthetic ones available the market. As a reference, formulation micronized magnesium hydroxide (n-MDH, obtained from brucite) an ethylene-vinyl aceta...
Upcycling of plastic waste is approached by designing multifunctional molecules for reactive compatibilization investigations a model polymer blend, here polyethylene (PE) and poly(ethylene- co -vinyl alcohol) (EVOH).
A method was developed for the conjugation of aminopropyl spacer-bearing carbohydrates with epoxy groups on crown nanoparticles consisting a copolymer N-vinyl-2-pyrrolidone and allyl glycidyl ether in basic buffer, opening prospects design vectorized nanocomposite drug forms. conjugate above trisaccharide A, synthetic blood group antigen, synthesized. Meglumine used to bind any unreacted epoxid...
We report a facile strategy for the preparation of sub-5 nm gold/platinum (Au-Pt) nanoparticles which are thermally stabilized by a crosslinked polymer shell. Diblock copolymer (PS-b-PI-SH) ligands on the Au nanoparticles were used to crosslink the vinyl functionalities on PI via hydrosilylation with 1,1,3,3tetramethyldisiloxane in the presence of a platinum catalyst. The Pt catalyst was reduce...
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