Yazar "Yigitoglu, Mustafa" için listeleme
-
4-vinylpyridine and 2-hydroxyethylmethacrylate monomer mixture graft copolymerization onto poly(ethylene terephthalate) fibers using benzoyl peroxide
Yigitoglu, Mustafa; Arslan, Metin (Springer, 2007)Poly(ethylene terephthalate) (PET) fibers were grafted with 4-vinyl pyridine (4-VP) and 2-hydroxyethylmethacrylate (HEMA) using benzoyl peroxide (Bz(2)O(2)) as initiator in aqueous media. PET fibers were swelled in ... -
Adsorption behavior of congo red from an aqueous solution on 4-vinyl pyridine grafted poly(ethylene terephthalate) fibers
Arslan, Metin; Yigitoglu, Mustafa (John Wiley & Sons Inc, 2008)In this study, a reactive fibrous adsorbent was prepared through the grafting of 4-vinyl pyridine monomer onto poly(ethylene terephthalate) (PET) fibers for the removal of Congo red (CR) dye from an aqueous solution with ... -
Adsorption behaviour of methylene blue from aqueous solution on poly(ethylene terephthalate)-g-4-vinylpyridine/2-hydroxyethylmethacrylate fibers
Yigitoglu, Mustafa; Arslan, Metin (Walter De Gruyter Gmbh, 2007)In this study, a novel fibrous adsorbent obtained by grafting 4-vinyl pyridine (4-VP)/2-hydroxyethylmethacrylate ( HEMA) comonomers onto poly ( ethylene terephthalate) ( PET) fibers was used for removal of methylene blue ... -
Biodegradation of 2,4,6-Trinitrotoluene (TNT) with Bacteria Isolated from TNT-polluted Waste Pink Water
Gok, Zehra Gun; Inal, Murat; Yigitoglu, Mustafa (Budapest Univ Technology Economics, 2019)In this study, bacterial strains that can use TNT as a nitrogen source isolated from TNT contaminated pink water. We isolated 5 bacterial strains and the isolated bacteria were cultured in medium containing TNT and TNT ... -
Coating of modified poly(ethylene terephthalate) fibers with sericin-capped silver nanoparticles for antimicrobial application
Gok, Zehra Gun; Gunay, Kubra; Arslan, Metin; Yigitoglu, Mustafa; Vargel, Ibrahim (Springer, 2020)In this work, a kind of amine-type PET fibers was synthesized by reacting hexamethylenediamine (HMDA) with methacrylic acid-g-poly(ethylene terephthalate) (PET-g-MAA) fibers for the adsorption of silk sericin-capped silver ... -
Controlled release of indomethacin from crosslinked alginate beads
Inal, Murat; Yigitoglu, Mustafa; Isiklan, Nuran (Walter De Gruyter Gmbh, 2008)Beads of the sodium alginate ( NaAlg) were prepared by dropping aqueous sodium alginate ( NaAlg) into glutaraldehyde ( GA) as a crosslinker and HCl as a catalyst mixture solution. Beads prepared were used to deliver a model ... -
Graft copolymerization of N-vinyl-2-pyrrolidone onto sodium carboxymethylcellulose with azobisisobutyronitrile as the initiator
Yigitoglu, Mustafa; Isiklan, Nuran; Ozmen, Rukiye (John Wiley & Sons Inc, 2007)Graft copolymers of sodium carboxymethylcellulose with N-vinyl-2-pyrrolidone were prepared in aqueous solutions with azobisisobutyronitrile as the initiator. The graft copolymers [sodium carboxymethylcellulose-g-poly(N-v ... -
High productivity bioethanol fermentation by immobilized Saccharomyces bayanus onto carboxymethylcellulose-g-poly(N-vinyl-2-pyrrolidone) beads
Gokgoz, Murat; Yigitoglu, Mustafa (Taylor & Francis Ltd, 2013)Crosslinked graft copolymers of CMC with N-vinyl-2-pyrrolidone (N-VP) were prepared in different grafting yields. Saccharomyces bayanus was immobilized in the graft copolymers of carboxymethylcellulose-g-poly(N-vinyl-2-p ... -
Immobilization of Candida rugosa lipase on glutaraldehyde-activated polyester fiber and its application for hydrolysis of some vegetable oils
Yigitoglu, Mustafa; Temocin, Zuelfikar (Elsevier Science Bv, 2010)Candida rugosa lipase was effectively immobilized on the poly(ethylene terephthalate) grafted acrylamide (PET-g-AAm) fiber which was prepared through Hofmann reaction. The activities of the immobilized enzyme and the free ... -
Immobilization of horseradish peroxidase on electrospun poly(vinyl alcohol)-polyacrylamide blend nanofiber membrane and its use in the conversion of phenol
Temocin, Zulfikar; Inal, Murat; Gokgoz, Murat; Yigitoglu, Mustafa (Springer, 2018)Electrospun nanofibers, with their porous structures, high surface-to-volume ratio, and good mechanical properties, are used as a support material for enzyme immobilization. In this study, the poly(vinyl alcohol) and ... -
Immobilization of Saccharomyces cerevisiae on to modified carboxymethylcellulose for production of ethanol
Gokgoz, Murat; Yigitoglu, Mustafa (Springer, 2011)In this work, modified carboxymethylcellulose (CMC) was used as a new support material for production of ethanol. Crosslinked graft copolymers of CMC with N-vinyl-2-pyrrolidone (N-VP) were prepared in different grafting ... -
Improvement of Bioethanol Productivity of Immobilized Saccharomyces Bayanus with Using Sodium Alginate-Graft-Poly(N-Vinyl-2-Pyrrolidone) Matrix
Inal, Murat; Yigitoglu, Mustafa (Springer, 2012)In this study, immobilization conditions and bioethanol production characteristics of immobilized Saccharomyces bayanus were investigated into sodium alginate-graft-poly(N-vinyl-2-pyrrolidone; NaAlg-g-PVP) matrix. The ... -
In situ synthesis of silver nanoparticles on modified poly(ethylene terephthalate) fibers by grafting for obtaining versatile antimicrobial materials
Gun Gok, Zehra; Demiral, Ayse; Bozkaya, Ogun; Yigitoglu, Mustafa (SPRINGER, 2020)Because of having high mechanical properties and cheapness of PET textiles, functionalization of them for new properties is an active research area. In the present work, methacrylic acid (MAA)-grafted PET fibers (PET-g-MAA) ... -
Influences of phenolic compounds on citric acid productivity by Aspergillus niger in stirred fermentor
Cevrimli, Bekir Sitki; Kariptas, Ergin; Yasar, Ahmet; Yigitoglu, Mustafa (Univ Catolica De Valparaiso, 2010)Ligninolytic enzymes of the basidiomycetes play a crucial role in the global carbon cycle. The demand for application of ligninolytic enzymes complexes of white-rot fungi in industry and biotechnology is ever increasing ... -
Investigation on selective adsorption of Hg(II) ions using 4-vinyl pyridine grafted poly(ethylene terephthalate) fiber
Bozkaya, Ogun; Yigitoglu, Mustafa; Arslan, Metin (Wiley, 2012)In the work, poly(ethylene terephthalate) (PET) fibers were grafted with 4-vinyl pyridine (4-VP) monomer using benzoyl peroxide (Bz(2)O(2)) as initiator in aqueous media. The removal of Hg(II) ions from aqueous solution ... -
Microwave-assisted synthesis of alginate-g-polyvinylpyrrolidone copolymer and its application in controlled drug release
Yigitoglu, Mustafa; Aydin, Gulden; Isiklan, Nuran (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 ... -
One-pot facile synthesis of silk sericin-capped gold nanoparticles by UVC radiation: Investigation of stability, biocompatibility, and antibacterial activity
Akturk, Omer; Gok, Zehra Gun; Erdemli, Ozge; Yigitoglu, Mustafa (Wiley, 2019)Herein, an easy one-pot synthesis method for gold nanoparticles (AuNPs), involving only gold salt and sericin extracted from silkworm cocoon in the presence of ultraviolet C (UVC) radiation, was developed. Nanoparticle ... -
Production of 2-hydroxyethyl methacrylate-g-poly(ethylene terephthalate) nanofibers by electrospinning and evaluation of the properties of the obtained nanofibers
Gok, Zehra Gun; Inal, Murat; Bozkaya, Ogun; Yigitoglu, Mustafa; Vargel, Ibrahim (WILEY, 2020)Nanofiber production was investigated from poly(ethylene terephthalate) (PET) polymers functionalized with hydroxyethyl methacrylate (HEMA) by grafting of HEMA monomers onto the PET fibers. HEMA grafted PET (PET-g-HEMA) ... -
Production of bioethanol by immobilized Saccharomyces Cerevisiae onto modified sodium alginate gel
Inal, Murat; Yigitoglu, Mustafa (Wiley-Blackwell, 2011)BACKGROUND: Microbial bioethanol production is an important option in view of the finite global oil reserves. Bioethanol fermentation was carried out using immobilized microorganisms (Saccharomyces cerevisiae, Zymomonas ... -
Removal of Benzidine-based Azo Dye from Aqueous Solution Using Amide and Amine-functionalized Poly(ethylene terephthalate) Fibers
Yigitoglu, Mustafa; Temocin, Zulfikar (Korean Fiber Soc, 2010)In this study, amide and amine groups bound to poly(ethylene terephthalate) fibers are used to remove the colored toxic Congo red dye from aqueous solution. The effects of process variables like pH, contact time, graft ...