A5050508650- biodegradable polymer synthesis and properties
- Carbon dioxide utilization in catalysis
- Advanced Polymer Synthesis and Characterization
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Polymer crystallization and properties
- Synthesis and properties of polymers
- Electromagnetic wave absorption materials
- Nanocomposite Films for Food Packaging
- Nanoparticle-Based Drug Delivery
- Silicone and Siloxane Chemistry
- Chemical Synthesis and Characterization
- Organometallic Complex Synthesis and Catalysis
- Flame retardant materials and properties
- Dielectric materials and actuators
- Block Copolymer Self-Assembly
- Natural Fiber Reinforced Composites
- Fiber-reinforced polymer composites
- Polymer Nanocomposite Synthesis and Irradiation
- Antimicrobial agents and applications
- Inorganic and Organometallic Chemistry
- Hydrogels: synthesis, properties, applications
- Antimicrobial Peptides and Activities
- Bone Tissue Engineering Materials
- Polyoxometalates: Synthesis and Applications
Warsaw University of Technology
2015-2024
University of Warsaw
2016-2021
Carnegie Mellon University
2008-2012
Polystyrene-b-poly(methyl acrylate) (PS−PMA) copolymers were synthesized using activators regenerated by electron transfer (ARGET) for atom radical polymerization (ATRP). Polydispersity of the PMA block was varied adjusting amount copper catalyst in ARGET ATRP, and resulting molecular weight distributions found to be approximately symmetric. At a composition 35 vol % PMA, formation hexagonally perforated lamellar (HPL) morphology observed polydisperse PS−PMA copolymer short- long-term...
Cationic polymers have been extensively investigated as a potential replacement for traditional antibiotics. Here, we examined the effect of molecular weight (MW) on antimicrobial, cytotoxic, and hemolytic activity linear polytrimethylenimine (L-PTMI). The results indicate that biological polymer sharply increases MW increases. Thanks to different position antibacterial toxicity thresholds, tuning PTMI allows one achieve therapeutic window between antimicrobial concentrations. L-PTMI...
Fused Filament Fabrication (FFF) is one of the most emerging techniques nowadays. Affordable, easy to use, economical, for a broad audience − from specialists home users. These are only several its advantages. A disadvantage limited number available filament types, especially those with high performance. Therefore, aim work was investigate properties custom–made printouts based on polylactic (PLA), graphite (G) and molybdenum disulfide (MoS2). This looked at structural thermal analysis,...
Abstract Poly(methyl acrylate)‐ b ‐polystyrene with controlled molecular weight distribution of each block was synthesized via activators regenerated by electron transfer atom radical polymerization. Polymers tunable dispersity, in the range M w / n 1.32 to 2.0, were achieved adjusting concentration copper catalyst and reaction temperature, thereby controlling rate reversible deactivation as well number monomer units added during activation cycle. Regardless increased high chain‐end...
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication the EditorNEXTICAR ATRP of Styrene and Methyl Methacrylate with Ru(Cp*)Cl(PPh3)2Andrzej Plichta, Wenwen Li, Krzysztof Matyjaszewski*View Author Information Center for Macromolecular Engineering, Department Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213* Corresponding author. E-mail: [email protected]Cite this: Macromolecules 2009, 42, 7, 2330–2332Publication Date (Web):March 16,...
A library of 13 esters and methylated esters, including entirely new molecules, derived from renewable natural tartaric acid, have been synthesized, characterized, used as plasticizers polylactide (PLA). Differential scanning calorimetry (DSC) studies the blends consisting PLA acid derivatives reveal that all obtained exhibit plasticizing properties; however, their miscibility with ability to modify thermal transition is dependent significantly on structure ester group. It was found bearing...
The aim of this study was to develop an innovative, dual-stimuli-responsive smart hydrogel local drug delivery system (LDDS), potentially useful as injectable simultaneous chemotherapy and magnetic hyperthermia (MHT) antitumor treatment device. hydrogels were based on a biocompatible biodegradable poly(
Abstract Contemporary applications require protection against overheating and electromagnetic radiation interference, preferably with reduced mass enhanced basic performance, such as flammability or chemical UV resistance often also low non‐electrically conductive. Materials exhibiting all these functions can be designed, but there is usually not just one several different materials advanced processing requirements; therefore, a simple manufacturing method providing percolation path...
ABSTRACT The synthesis of ABA type triblock copolymers comprising poly(1,4‐butylene adipate) macroinitiator and polylactide segments is described in this article. Acetylacetonates various low‐toxic metals: Li, Mg, Ca, Zn, Fe, Zr are used as catalysts. course polymerization, microstructure, thermal properties, biodegradation the obtained analyzed based on electronegativity metal used. completely incorporated into major products, however, linear cyclic lactide homopolymers present because...
In flight coalescence of polyurea inks in different volume ratios produces materials with varied degrees elasticity.
Three-arm polylactides (PLA) containing 0.2, 7.6, and 13% of d-lactic acid monomeric units were obtained refunctionalized into ATRP macroinitiators via esterification hydroxyl groups with 2-bromoisobutyryl bromide. These polymeric matrices underwent enzymatic degradation various rates revealed negative results on cytotoxicity genotoxicity tests. Camptothecin (CPT), which is an anticancer active substance, was transformed acrylic monomers; however, simple CPT acrylate not able to...
In this paper, injectable, thermosensitive smart hydrogel local drug delivery systems (LDDSs) releasing the model antitumour 5-fluorouracil (5-FU) were developed. The based on biodegradable triblock copolymers synthesized via ring opening polymerization (ROP) of ε-caprolactone (CL) in presence poly(ethylene glycol) (PEG) and zirconium(IV) acetylacetonate (Zr(acac)4), as co-initiator catalyst, respectively. structure, molecular weight (Mn) distribution (Đ) materials was studied detail using...
Hyperbranched polymers (HBPs) have been known and extensively investigated for over two decades. However, there are still areas that need to be explored. Recently, much effort has placed in developing drug delivery systems based on macromolecules of three-dimensional structure. This paper describes the synthesis random hyperbranched copolyesters 2,2-bis(hydroxymethyl)propionic acid (bis-MPA) ε-caprolactone (ε-CL) their phase behavior supercritical carbon dioxide (scCO2) after modification...
In the presented paper, two basic strategies that can be used in processes of chemical recycling polyester material were described. The first them involves increasing molar mass recycled materials solid-state polycondensation (SSP) process and/or joining their chains with various types substances easily reacting end groups polyesters (so-called extending agents). essence second strategy is degradation under influence protogenic agents (such as water, alcohols, glycols and amines) to obtain...