نتایج جستجو برای: vinyl alcohol evoh
تعداد نتایج: 126454 فیلتر نتایج به سال:
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...
The sol–gel transition and the mechanical properties of a supramolecular poly(vinyl alcohol)–iodine complex can be tuned in time thanks to an “iodine clock”.
in this research, hydrogels based on poly vinyl alcohol and poly acrylic acid blend were prepared which were cross-linked by applied thermal conditions. afterward, effects of time and heating on water uptake were investigated. the highest water uptake value exhibited by the sample that was heated for 20 min. at 110 ºc was about 2129% after 4 days at equilibrium state. hydrogels exhibited ph-sen...
Here, we present superhydrophobic, hierarchical, and nanostructured cryogels made from cellulose nanofibers (CNFs) nanocrystals (CNCs), double cross-linked with MXene nanosheets poly(vinyl alcohol) (PVA) in the presence of tetradecylamine.
Poly(vinyl alcohol)-Iodine Complex in Poly(vinyl alcohol) Films Soaked at High Iodine Concentrations
This Research Article reports on the enhancement of the thermal transport properties of nanocomposite materials containing hexagonal boron nitride in poly(vinyl alcohol) through room-temperature atmospheric pressure direct-current microplasma processing. Results show that the microplasma treatment leads to exfoliation of the hexagonal boron nitride in isopropyl alcohol, reducing the number of s...
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