A5045881661- Polymer Surface Interaction Studies
- Advanced Polymer Synthesis and Characterization
- Surfactants and Colloidal Systems
- Hydrogels: synthesis, properties, applications
- Electrospun Nanofibers in Biomedical Applications
- Surface Modification and Superhydrophobicity
- Conducting polymers and applications
- RNA Interference and Gene Delivery
- Graphene research and applications
- Boron and Carbon Nanomaterials Research
- Synthesis and properties of polymers
- Adhesion, Friction, and Surface Interactions
- Polymer Nanocomposites and Properties
- Nanofabrication and Lithography Techniques
- biodegradable polymer synthesis and properties
- Silicone and Siloxane Chemistry
- Lignin and Wood Chemistry
- Protein purification and stability
- Photopolymerization techniques and applications
- Advanced Cellulose Research Studies
- Molecular Junctions and Nanostructures
- DNA and Nucleic Acid Chemistry
- Dendrimers and Hyperbranched Polymers
- Clay minerals and soil interactions
- Polymer Nanocomposite Synthesis and Irradiation
Lviv Polytechnic National University
2015-2024
Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies Lviv
2020
Abstract Polymer nanocomposites, such as polyethylene terephthalate (PET)‐clay systems, leverage intricate interactions between components to fine‐tune their thermal, mechanical, and rheological properties. In our study, we functionalized montmorillonite clay nanofillers (CloisiteNa + ) fabricate recycled PET‐clay nanocomposites. The underwent a three‐step functionalization process, involving the treatment with (3‐Aminopropyl)triethoxysilane (APTES), grafting of initiating coatings...
Poly(4-vinylpyridine)-grafted brushes demonstrate a thermal response of their wettability (stronger than that for spin-coated films), surface morphology, and protein adsorption.
In this work, the nanoarchitectonics approach to synthesize a new functional material with certain configurations and hierarchical motifs of multifunctional initiators surface-initiated radical polymerization (MPIs) on surface multi-wall carbon nanotubes (MWCNTs) was realized. The presence covalently-linked MPIs surfaces amine functionalized MWCNTs confirmed by Raman spectroscopy thermal analysis. Nanocomposites polybutylene terephthalate – poly(tetramethylene oxide) (PBT/PTMO) modified show...
In this study, water-dispersed thermo-responsive boron nitride nanotubes (BNNTs) were prepared in a simple two-step process, where on the first step oligoperoxide was grafted via interaction of amino groups (defects) BNNTs with pyromellitic chloroanhydride fragments molecules. The second involves N-isopropylacrylamide (NIPAM) graft polymerization 'from surface' oligoperoxide-functionalized resulting poly(N-isopropylacrylamide) (PNIPAM) coating. pristine and functionalized characterized by...
The novel polymeric coatings of oligoperoxide-graft-poly(4-vinylpyridine-co-oligo(ethylene glycol)ethyl ether methacrylate246) [oligoperoxide-graft-P(4VP-co-OEGMA246)] attached to glass were successfully fabricated. composition, thickness, morphology, and wettability resulting analyzed using X-ray photoelectron spectroscopy, ellipsometry, atomic force microscopy, contact angle measurements, respectively. In addition, adsorption the bovine serum albumin was examined with fluorescence...
Novel alignment coating with temperature-tuned anchoring for nematic liquid crystals (NLCs) was successfully fabricated in three step process, involving polymerization of poly(cholesteryl methacrylate) (PChMa) from oligoproxide grafted to the glass surface premodified 3-aminopropyltriethoxysilane. Molecular composition, thickness, wettability PChMa and its action a NLC were examined time flight-secondary ion mass spectrometry, ellipsometry, contact angle measurements, polarization optical...
Poly(n-butyl methacrylate) (PBMA) grafted polymer brushes attached to glass were fabricated in a three-step process involving surface initiated atom transfer radical polymerization. The properties of the coatings after subsequent fabrication steps confirmed using ToF-SIMS and ellipsometry. Measurements water contact angle AFM revealed temperature-induced changes hydrophobicity morphology coating. transition temperatures (Tg) PBMA with different thicknesses determined from measurements. For...
Properties of novel temperature-responsive hydroxyl-containing poly(pentaerythritol monomethacrylate) (PPM) coatings, polymerized from oligoperoxide grafted to glass surface premodified with (3-aminopropyl)triethoxysilane, are presented. Molecular composition, chemical state, thickness, and wettability examined time flight-secondary ion mass spectrometry (ToF-SIMS), X-ray photoelectron spectroscopy (XPS), ellipsometry, contact angle measurements, respectively. Temperature-induced changes in...
pH-Switchable, fluorescent, hybrid, water-dispersible nanomaterials based on boron nitride nanotubes (BNNTs) and grafted copolymer brushes (poly(acrylic acid- co -fluorescein acrylate) – P(AA- -FA)) were successfully fabricated in a two-step process. The functionalization of BNNTs was confirmed by spectroscopic, gravimetric imaging techniques. In contrast to “pure” BNNTs, -FA)-functionalized demonstrate intense green fluorescence emission at 520 nm. Under neutral or alkaline pH values, are...
Self-assembled pH-sensitive reactive submicron-sized particles have been developed via intermolecular electrostatic interactions between chitosan and a carboxylated oligoperoxide having poly(ethylene glycol) fragments.The the structure of an ionically crosslinked hydrogel their size surface charge depend on conditions formation (i.e., pH functional group ratio).The presence peroxide groups in has enabled to synthesize covalently particles.
Abstract BACKGROUND: Peroxidation of a poly(ethylene terephthalate) (PET) surface clears the path to formation biospecific polymeric layers on it. The goal this work was modification PET with oligoperoxides further grafting dextran macromolecules peroxidated surface. RESULTS: Novel good affinity were synthesized. They are capable attaching surface, due decomposition peroxide groups via free radicals. alterations in energy and its components as result well changes topography determined....
Dextran methacrylates were received by acylation of dextran with methacryloilchloride in the presence tertiary amines DMF/LiCl solution.Degree substitution (DS) synthesized derivatives reached 1.8 methacrylic residues per glucopyranoside unit macromolecule.Dextran methacrylates, obtained triethylamine, DS over 0.5 insoluble water.Derivatives pyridine separated form a stable water soluble complex chloride.These complexes maintain their solubility up to = 1.8.The structurization solutions...
In the present work, three types of grafted brush coatings [P4VP, POEGMA246, and P(4VP-co-POEGMA246)] were successfully fabricated using graft polymerization monomers “from surface.” The composition, thickness, morphology analyzed by TOF-SIMS, ellipsometry, AFM, respectively. chemical nature polymer surface plays a crucial role in growth development cow granulosa cells and, therefore, also oocyte-cumulus complexes. comparison with other coatings, P(4VP-co-POEGMA246) copolymer coating enables...
Novel amphiphilic poly(DMAEMA)-block-poly(NVP-co-BA-co-AEM) (BP83-1) forms stable micelles and BP83-1/pDNA complexes possessing controlled size, charge enhanced aggregation degree. It was found that the formation of by BP83-1 is necessary for successful DNA binding compaction. The polyamphiphile micelle degree defined their crucial effect on compaction morphology polyplexes. Strong upon interaction with polymer at CMC value, positive charge, high stability polyplex are key factors promoting...
The method for synthesis of a new class amphiphilic oligoesters pyromellitic acid is developed. As hydrophilic fragments polyethylene glycols or glycol mono methyl ethers were used, as lipophilic ones – primary fatty alcohols cholesterol. structure the synthesized was confirmed by IR- and PMR-spectroscopy. could solubilize water-insoluble substances, example such effective antitumor drug curcumin. high solubilization capacity OEPA assemblies their biodegradability, well other properties...