نتایج جستجو برای: poly vinyl alcohol films activity against gram

تعداد نتایج: 1882063  

Journal: :journal of chemical health risks 0
bozorgmehr maddah department of chemistry, imam hossein university, tehran, iran

as part of our ongoing interest in exploring the synthesis of antibacterial agent, we report an efficient, mild, one pot and chemoselective procedure for preparation of 3-poly (vinylbenzyl)-5,5-dimethylimidazolidine-2,4-dione as a antimicrobial agent from poly(vinylbenzyl chloride) and 5,5-dimethylhydantoin in the presence of a base in dmf as a solven. the ft-ir technique and melting point conf...

2015
Eslam M. Sheha Mona M. Nasr Mabrouk K. El-Mansy

UNLABELLED A solid polymer electrolyte system based on poly(vinyl alcohol) (PVA) and poly(3,4-Etylenedioxythiophene):poly(styrenesulfonate) ( PEDOT PSS) complexed with magnesium bromide (MgBr2) salt was prepared using solution cast technique. The ionic conductivity is observed to increase with increasing MgBr2 concentration. The maximum conductivity was found to be 9.89 × 10(-6) S/cm for opti...

Journal: :ACS applied materials & interfaces 2017
Dora Coelho Ana Sampaio Carla J S M Silva Helena P Felgueiras M Teresa P Amorim Andrea Zille

Two different nanofibrous antibacterial membranes containing enzymatically synthesized poly(catechol) (PC) or silver nitrate (AgNO3, positive control) blended with poly(vinyl alcohol) (PVA) and electrospun onto a poly(vinylidene fluoride) (PVDF) basal disc to generate thin-film composite midlayers were produced for water ultrafiltration applications. The developed membranes were thoroughly char...

Journal: :Materials advances 2021

A water-induced self-healing polymer hybrid was prepared by the hybridization of poly(vinyl alcohol) with smectite clay in aqueous media and subsequent casting.

Journal: :Anais da Academia Brasileira de Ciencias 2006
Jinqi Xu Mathew George Richard G Weiss

Both the regio- and stereo-chemistries of the photoreactions of 1-naphthyl (R)-2-phenylpropanoate have been investigated in poly(vinyl acetate) films in their glassy (at 5 degrees C) and melted (at 50 degrees C) states and in ethyl acetate. These results are compared with those from irradiations in polyethylene films and in n-hexane. The regioselectivity of the intermediate 1-naphthoxy/(R)-2-ph...

Journal: :The Journal of antibiotics 1998
J H Kang S W Yu S Y Lee K W Kim

During the last decades, the antibacterial activity of cephalosporins has been steadily increased through sidechain modifications at C-3 and C-7. Recently, 3-vinyl cephalosporins, such as TOC-391), E-10772,3) and YM402204,5), have been intensively studied. They show well-balanced antibacterial activity against Gram-positive bacteria including S. aureus and Gram-negative bacteria including P. ae...

Journal: :Materials research express 2022

Abstract Nanocomposite polymer electrolyte films based on a blend of two polymers jackfruit seed starch (JSS) and poly (vinyl alcohol) (PVA) complexed with nano-particle zinc oxide (ZnO) (i.e., (50 wt% JSS/50 PVA) + x ZnO where = 0, 2, 4, 6, 8, 10, 12 14) were prepared by using the casting solution method. Electrochemical impedance spectroscopy (EIS) has been employed between frequencies 10 Hz ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید