Effect of side chain variation on surface and biological properties of poly(2-alkyl-2-oxazoline) multilayers

Date

2019-05-01

Author

Çağlı, Eda
Ugur, Esma
Ulusan, Sinem
Banerjee, Sreeparna
Erel Göktepe, İrem

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

189
views

0
downloads

Multilayers of poly(2-alkyl-2-oxazoline)s (PAOX) with varying side chains were constructed through layer-by-layer (LbL) self-assembly using Tannic Acid (TA). Surface morphology, stability, wettability and stimuli-responsive drug release properties of the films were correlated with antiadhesive and antibacterial properties of the multilayers. Thickness, roughness, wettability and stability of multilayers were affected by the chemical nature of PAOX side chain, phase behaviour of PAOX and the binding strength between the layers. PAOX-multilayers released remarkably different amounts of Ciprofloxacin (CIP) especially at acidic pH and 37 °C. Antibacterial activity of the films against S. aureus was in good agreement with the amounts of CIP released from multilayers. Despite the differences in the released CIP amount, PAOX-multilayers showed similar antibacterial activity against E. coli under all conditions. Multilayers with greater wettability exhibited greater resistance against Bovine Serum Albumin (BSA) adsorption and were more effective to reduce adherence of E. coli. None of the PAOX-films exhibited antiadhesiveness against S. aureus.

Subject Keywords

Organic Chemistry, General Physics and Astronomy, Polymers and Plastics

URI

https://hdl.handle.net/11511/43458

Journal

European Polymer Journal

DOI

https://doi.org/10.1016/j.eurpolymj.2019.02.031

Collections

Department of Chemistry, Article

Suggestions

OpenMETU
Core

Effects of microcompounding process parameters on the properties of ABS/polyamide-6 blends based nanocomposites Oezkoc, Gueralp; Bayram, Göknur; Quaedflieg, Martin (Wiley, 2008-03-05) Melt intercalation method was applied to produce acrylonitrile-butadiene-styrene/polyamide-6 (ABS/ PA6) blends based organoclay nanocomposites using a conical twin-screw microcompounder. The blend was compatibilized using a maleated olefinic copolymer. The effects of microcompounding conditions such as screw speed, screw rotation-mode (co- or counter-), and material parameters such as blend composition and clay loading level on the morphology of the blends, dispersibility of nanoparticles, and mechanical pr...
Immobilization of invertase and glucose oxidase in poly 2-methylbutyl-2-(3-thienyl) acetate/polypyrrole matrices Isik, S; Alkan, S; Toppare, Levent Kamil; Cianga, I; Yagci, Y (Elsevier BV, 2003-12-01) Immobilization of invertase and glucose oxidase in conducting polypyrrole and copolymers of poly 2-methylbutyl-2-(3-thienyl) acetate with pyrrole were achieved via electrochemical method. Sodium dodecyl sulphate was found to be the most suitable supporting electrolyte. Maximum reaction rate, Michaelis-Menten constant and optimum temperatures were determined for native and immobilized enzymes. Storage and operational stabilities of enzyme electrodes were also investigated.
Synthesis and characterization of graft and branched polymers via type-II photoinitiation Muftuoglu, AE; Saner, B; Demirel, AL; Yagci, Y (Informa UK Limited, 2005-01-01) Preparation of graft and branched polymers via photo-induced radical polymerization and photo-induced self-condensing vinyl polymerization (SCVP) routes, respectively, was studied. Precursor random co-polymers of styrene (St) and 2-(dimethylamino)ethyl methacrylate (DAEMA) were obtained via thermal polymerization initiated by azoisobutyronitrile, (AIBN) and used as macromolecular co-initiators in photo-induced grafting experiments. Successful grafting was achieved, while cross-linking also occurred to some ...
Synthesis and mesophase properties of block and random co-polymers of electroactive and liquid crystalline monomers Yilmaz, F; Kasapoglu, F; Hepuzer, Y; Yagci, Y; Toppare, Levent Kamil; Fernandes, EG; Galli, G (Informa UK Limited, 2005-01-01) Homo-polymers and random co-polymers of electroactive and liquid crystalline monomers, namely 3-thienylmethyl methacrylate (MTM) and 6-(4-cyanobiphenyl-4'-oxy)hexyl acrylate (LC6), were prepared by conventional free radical polymerization. Block co-polymers of MTM and LC6 were also synthesized by using the 1,1-diphenylethene (DPE) method. The obtained random and block co-polymers exhibited liquid crystal behavior depending on the content of the LC6 units. It was found that microphase separation of the polym...
Synthesis and characterization of fully aromatic thermotropic liquid-crystalline copolyesters containing m-hydroxybenzoic acid units Yerlikaya, Z; Aksoy, S; Bayramlı, Erdal (Wiley, 2001-10-01) A series of fully aromatic copolyesters based on p-acetoxybenzoic acid (p-ABA), hydroquinone diacetate (HQDA), terephthalic acid (TPA), and m-acetoxybenzoic acid (m-ABA) were prepared by a modified melt-polycondensation reaction. The copolyesters were characterized by DSC, thermogravimetric analysis, H-1 NMR, polarized optical microscopy, X-ray diffraction, and intrinsic viscosity measurements. The copolyesters exhibited nematic liquid-crystalline phases in a broad temperature range of about 150 degreesC, w...

Citation Formats

E. Çağlı, E. Ugur, S. Ulusan, S. Banerjee, and İ. Erel Göktepe, “Effect of side chain variation on surface and biological properties of poly(2-alkyl-2-oxazoline) multilayers,” European Polymer Journal, pp. 452–463, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/43458.