Yazar "Altinok, Haydar" için listeleme
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Covalent immobilization of invertase on chemically activated poly (styrene-2-hydroxyethyl methacrylate) microbeads
Altinok, Haydar; Aksoy, Serpil; Tumturk, Hayrettin; Hasirci, Nesrin (Wiley, 2008)A carrier for invertase enzyme was synthesized from styrene (S) and 2- hydroxyethyl methacrylate (HEMA) in the form of microbeads. These poly (styrene-2-hydroxyethyl methacrylate), P(S-HEMA) microbeads were activated by ... -
Effect of polycondensation reaction conditions on the properties of thermotropic liquid-crystalline copolyester
Yikici, Meryem; Yerlikaya, Zekeriya; Aksoy, Serpil; Altinok, Haydar (Taylor & Francis Inc, 2008)In this study a range of wholly aromatic copolyesters based on kink m-acetoxybenzoic acid (m-ABA) monomer (33 mol%) and equimolar-linear p-acetoxybenzoic acid (p-ABA), hydroquinone diacetate (HQDA) and terephthalic acid ... -
Immobilization of glucose isomerase in surface-modified alginate gel beads
Tumturk, Hayrettin; Demirel, Gokhan; Altinok, Haydar; Aksoy, Serpil; Hasirci, Nesrin (Wiley, 2008)In this study, glucose isomerase enzyme was entrapped into modified and nonmodified calcium alginate gel beads. Various characteristics of free and immobilized enzymes such as the optimum pH, temperature and dependence of ... -
Immobilization of laccase in kappa-carrageenan based semi-interpenetrating polymer networks
Makas, Y. Gizem; Kalkan, N. Ayca; Aksoy, Serpil; Altinok, Haydar; Hasirci, Nesrin (Elsevier Science Bv, 2010)Laccase enzyme (L) was immobilized by entrapment into semi-interpenetrating polymer networks (semi-IPNs) prepared from kappa-carrageenan with either poly(acrylamide-acrylic acid) [P(AAm-AA)/kappa-car] or poly(acrylamide-itaconic ... -
Semi-interpenetrating polymer networks (semi-IPNs) for entrapment of laccase and their use in Acid Orange 52 decolorization
Yamak, Ozgur; Kalkan, N. Ayca; Aksoy, Serpil; Altinok, Haydar; Hasirci, Nesrin (Elsevier Sci Ltd, 2009)Laccase enzyme (L) from Trametes versicolor was entrapped in three hydrogel structures namely poly(acrylamide-N-isopropylacrylamide), P(AAm-NIPA), and semi-interpenetrating networks of poly(-acrylamide)/alginate, P(AAm)/Alg, ... -
Synthesis of nickel nanothorn particles by the hydrothermal method
Bayca, Salih Ugur; Altinok, Haydar; Akcay, Aysun (Taylor & Francis Inc, 2019)In this study, an investigation was performed of the preparation of nickel nanothorn particles by the hydrothermal synthesis method. The effects of parameters were investigated on the particle shape and size, which were ... -
Thermal and morphological properties of thermotropic liquid-crystalline copolyesters containing poly(ethylene terephthalate), 4-hydroxyphenylacetic acid and main-chain rigid aromatic units
Babacan, Volkan; Aksoy, Serpil; Yerlikaya, Zekeriya; Altinok, Haydar (Wiley, 2010)Thermotropic liquid-crystalline polymers (TLCPs) have aroused considerable interest due to their attractive properties as high-performance materials. Significant research attention has been devoted to investigating the ...