نتایج جستجو برای: poly vinyl alcohol films activity against gram

تعداد نتایج: 1882063  

Journal: :Advanced Materials Interfaces 2022

A combination of mechanochemistry and aqueous self-assembly is employed to prepare protein nanofibrils (PNFs) functionalized with perylene diimide (PDI) dyes. These materials are then mixed poly(vinyl alcohol) (PVA) casted into bioplastic films. The functionalization process not only results in luminescent hybrid materials, but the presence dye modifies physical properties PNFs. Films formed fr...

2014
Simon Harrisson Xuan Liu Jean-Noël Ollagnier Olivier Coutelier Jean-Daniel Marty

This article is the first comprehensive review on the study and use of vinyl ester monomers in reversible addition fragmentation chain transfer (RAFT) polymerization. It covers all the synthetic aspects associated with the definition of precision polymers comprising poly(vinyl ester) building blocks, such as the choice of RAFT agent and reaction conditions in order to progress from simple to co...

Journal: :iranian journal of hydrogen & fuel cell 2014
mehran javanbakht khadijeh hooshyari morteza enhessari hossein beydaghi

proton exchange membrane fuel cells (pemfcs) are electrochemical devices that show the highest power densities compared to the other type of fuel cell. in this work, nanocomposite membranes used for proton exchange membrane fuel cells as poly(vinyl alcohol)/la2ce2o7 (pva-lc) with the aim of increasing the water uptake and proton conductivity. glutaraldehyde (ga) was used as cross linking agent ...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2007
Brad J Berron Evan P Graybill G Kane Jennings

We report the surface-initiated growth of poly(alkylnorbornene) films via ring-opening metathesis polymerization (ROMP). The films are grown by exposure of a vinyl-terminated self-assembled monolayer (SAM) on gold to Grubbs first-generation catalyst and the subsequent exposure to an alkylnorbornene monomer. We investigate the influence of alkyl side chains on the structure, barrier, surface pro...

2001
H. C. Park

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...

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