The use of taste sensors with lipid/polymer membranes is one the methods to evaluate taste. As previously reported, can detect non-charged substances such as caffeine by modifying hydroxybenzoic acids (HBAs). mechanism detection was identified be an allosteric one. Generally, mechanism, defined “regulation at distant sites”, used describe regulation process for proteins. In this study, improve ...

A series of PA1111/BaTiO3 nanocomposites with different BaTiO3 contents are prepared by the in-situ salification-melt polymerization procedure. The morphological, spectroscopic studies and property characterization conducted. results indicate that proposed compositing method can effectively disperse nanoparticles in PA1111 matrix, as-prepared exhibit improved dielectric piezoelectric properties...

In this work the selectivity of crosslinked organic solvent stable PBI membranes is tuned by varying molar ratio two grafting agents: a long flexible polymer modifier (Elastamine RE-1-1000, 1000 g mol-1) and small molecule (2-methoxyethylamine, 75 mol-1). Grafting exclusively with chain provided membrane molecular weight cut-off (MWCO) 2000 mol-1 in acetonitrile. Increasing proportion reaction ...

This study involves the synthesis of hydroxyapatite and describes preparation characterization polymer coatings based on poly(ethylene glycol) diacrylate modified with bovine serum albumin hydroxyapatite. Hydroxyapatite was obtained by wet chemical characterized X-ray diffraction FTIR spectroscopy, its Ca/P molar ratio determined (1.69 ± 0.08). The ceramic were used in composite materials polym...

Microporous polymers based on anionic macroinitiator and toluene 2,4-diisocyanate were used as a support for 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF₆]) and 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([emim][Tf₂N]) immobilization. The polymeric support was modified by using silica particles associated in oligomeric media, and the influence of the modifier us...

Poly(N-vinylcaprolactam) (PVCL) connected to aminopropyl silica is a new stationary phase for temperature responsive liquid chromatography (TR-LC). PVCL shows a transition from hydrophilic to hydrophobic interaction between 30 and 40°C. The synthesis is described in detail. The temperature responsive characteristic of the phase is illustrated with a mixture of steroids using pure water as mobil...

Reports that globular proteins could enhance the interference blocking ability of the PPD (poly(o-phenylenediamine) layer used as a permselective barrier in biosensor design, prompted this study where a variety of modifying agents were incorporated into PPD during its electrosynthesis on Pt-Ir electrodes. Trapped molecules, including fibrous proteins and β-cyclodextrin, altered the polymer/modi...

In the present investigation, an attempt has been made to increase therapeutic efficacy, reduce frequency of administration and improve patient compliance by developing sustained release matrix tablets of theophylline. Sustained release matrix tablets of theophylline were developed by using drug and different concentrations of polymer such as 10, 20, 30, 40 and 50%. Hydroxypropylmethylcellulose...

Abstract Chemical modification of lignocellulosic fillers is a hydrophobization process that has been used for years in the production wood-polymer composites (WPCs). However, finding new, more effective modifiers still big challenge and remains subject much research. This study involved chemical wood with use newly designed ammonium imidazolium ionic liquids containing reactive functional grou...