Başlık için Kimya Bölümü listeleme
Toplam kayıt 185, listelenen: 109-128
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Methylene blue adsorption on magnetic alginate/rice husk bio-composite
(ELSEVIER, 2020)Magnetic alginate/rice husk (m-ALG/RH) bio-composite beads prepared with ionotropic gelation method and used for methylene blue (MB) removal. Structural analysis of magnetic alginate/rice husk composite beads was performed ... -
Microwave assisted synthesis and characterization of sodium alginate-graft-poly(N,N '-dimethylacrylamide)
(Elsevier Science Bv, 2016)Modification of sodium alginate (NaAlg) was carried out using N,N'-dimethylacrylamide (DMAAm) as a monomer and azobisizobutyronitrile (AIBN) as an initiator under microwave irradiation. The effect of reaction conditions ... -
Microwave based synthesis and spectral characterization of thermo-sensitive poly(N,N-diethylacrylamide) grafted pectin copolymer
(Elsevier Science Bv, 2018)The functionalization of polysaccharides with synthetic polymers has attracted great attention owing to its application in many industrial fields. The aim of this work was to study the impact of pectin functionalization ... -
Microwave-assisted synthesis of alginate-g-polyvinylpyrrolidone copolymer and its application in controlled drug release
(Springer, 2014)The aim of this study is to synthesize graft copolymer (NaAlg-g-PVP) in microwave oven and prepare pH-responsive beads with high entrapment efficiency. For this purpose, PVP was grafted onto sodium alginate using microwave ... -
Mn3O4/p(DCPD)HIPE nanocomposites as an efficient catalyst for oxidative degradation of phenol
(SPRINGER, 2020)The increase in the amount of wastewater containing organic pollutants in various industrial processes creates serious problems for the environment. Sulfate radical-based advanced oxidation process (AOP) is an effective ... -
Modification of glassy carbon electrode in basic medium by electrochemical treatment for simultaneous determination of dopamine, ascorbic acid and uric acid
(Elsevier Science Sa, 2013)In this paper, a modified glassy carbon electrode was prepared by electrochemical method in basic media (0.5 M NaOH solutions) and was used to electrochemically detect dopamine (DA), ascorbic acid (AA), uric acid (UA) and ... -
Non-Acidic Mediated Friedel-Craft Reaction of Thiophene Using EtAlCl2
(Asian Journal Of Chemistry, 2013)Since alkyl Lewis acids are Bronsted bases, they give a non-acidic reaction media. In this context, acylation of thiophene is investigated in the presence of EtAlCl2 and non-acidic media. Besides 8 examples of thiophene, ... -
Non-enzymatic sensing of glucose using a glassy carbon electrode modified with gold nanoparticles coated with polyethyleneimine and 3-aminophenylboronic acid
(Springer Wien, 2016)A non-enzymatic electrochemical method was developed for sensing glucose by using a glassy carbon electrode modified with 3-aminophenylboronic acid (APBA) immobilized on polyethyleneimine (PEI)-coated gold nanoparticles. ... -
Novel amoxicillin nanoparticles formulated as sustained release delivery system for poultry use
(Wiley, 2018)Amoxicillin is used in the treatment and prevention of a wide range of diseases in poultry breeding. However, its short half-life and low bioavailability restrict its clinical application in these species. Entrapment of ... -
Novel hydrophobic ligand-containing hydrogel membrane matrix: preparation and application to gamma-globulins adsorption
(Elsevier Science Bv, 2001)In this study, phenylalanine as a hydrophobic ligand was covalently attached to the co-monomer methacrylochloride. Then, poly(2-hydroxyethylmethacrylate-co-methacrylamidophenyalanine) [poly(HEMA-MApA)] membranes were ... -
A novel pH sensitive porous membrane carrier for various biomedical applications based on pHEMA/chitosan: Preparation and its drug release characteristics
(Wiley-V C H Verlag Gmbh, 2003)The synthetic hydrogels based on pHEMA have been widely studied and used in biomedical fields. Numerous techniques exist for entrapment of drugs or proteins in the hydrogels. The suitable biomaterials for biomedical ... -
One step effective removal of Congo Red in chitosan nanoparticles by encapsulation
(Pergamon-Elsevier Science Ltd, 2017)Chitosan nanoparticles (CNPs) were prepared with ionotropic gelation between chitosan and tripolyphosphate for the removal of Congo Red. The production of chitosan nanoparticles and the dye removal process was carried out ... -
Pectin-conjugated magnetic graphene oxide nanohybrid as a novel drug carrier for paclitaxel delivery
(Taylor & Francis Ltd, 2018)Recent studies have shown that graphene oxide (GO) drug carrier functionalized with biocompatible natural polymers lead to higher loading efficacy and better stability with diminished cellular toxicity. Pectin (PEC) is one ... -
Permeation and separation characteristics of acetic acid/water mixtures through poly(vinyl alcohol-g-itaconic acid) membranes by pervaporation, evapomeation, and temperature-difference evapomeation
(Wiley, 2004)In this study, itaconic acid (IA) was grafted onto poly(vinyl alcohol) (PVA) with cerium(IV) ammonium nitrate as an initiator at 45degreesC. The grafted PVA was characterized with Fourier transform infrared spectroscopy, ... -
pH responsive itaconic acid grafted alginate microspheres for the controlled release of nifedipine
(Elsevier Sci Ltd, 2011)A series of pH responsive alginate-g-poly(itaconic acid) (NaAlg-g-PIA) microspheres were prepared as drug delivery matrices of nifedipine cross-linked by glutaraldehyde (GA) in the hydrochloric acid catalyst. Graft copolymers ... -
pH/temperature-responsive poly(dimethylaminoethyl methacrylate) grafted kappa-carrageenan copolymer: Synthesis and physicochemical properties
(WILEY, 2020)kappa-Carrageenan-graft-poly(dimethylaminoethyl methacrylate) (CRG-g-PDMA) was synthesized via free-radical copolymerization under microwave irradiation.C-13-Nuclear magnetic resonance spectroscopy (C-13-NMR), fourier-transform ... -
Phosphorus-nitrogen compounds. spiro- and crypta-phosphazene derivatives: synthesis and spectral investigations. Structure of butane- N, N'-bis(1,4-oxybenzyl)- spiro(propane-1,3-diamino)tetrachlorocyclo-2λ 5, 4λ 5, 6λ 5-triphosphazatriene. Part VII
(Elsevier, 2004)The condensation reactions between trimer, N3P3Cl6, and diamines, 2 and 4 and {1-{N-[1-(2-hydroxynaphthylmethyl)aminomethylidene]}-2(1H)-naphthalenone, 3, yielded the new spiro-cyclic- (5 and 8) and the novel spiro-phosphazene ... -
Phosphorus–nitrogen compounds. Part VI. Aminolysis of octachlorocyclotetraphosphazatetraene and the crystal structure of 2-trans-6-bis(n-propylamino)-2,4,4,6,8,8-hexakis-tert-butylaminocyclo-2λ5, 4λ5, 6λ5, 8λ5-tetraphosphazatetraene
(Elsevier Science Bv, 2003)The reactions of 2-trans-6-N4P4(NBPrn)(2)CI6 (2), which was obtained from N4P4Cl8 (1) and n-propylamine, with pyrrolidine and t-butylamine in different solvents have been studied. Compound (2) gave two different products, ... -
Phragmites australis as a new cellulose source: Extraction, characterization and adsorption of methylene blue
(ELSEVIER, 2020)The aim of this study was to investigate potential use of Phragmites australis in the production of cellulose microfibrils with chemical extraction process. Characterization of the natural P. australis and extracted fibrils ... -
Phragmites australis: An alternative biosorbent for basic dye removal
(Elsevier Science Bv, 2016)This study is aimed at investigating the removal of methylene blue (MB) from aqueous solutions using a reed species, Phrag-mites australis as an adsorbent. P. australis was modified by means of a chemical treatment, assuring ...