A5036000385- Silicone and Siloxane Chemistry
- Synthesis and characterization of novel inorganic/organometallic compounds
- Synthesis and properties of polymers
- Organoboron and organosilicon chemistry
- Chemical Synthesis and Reactions
- Microplastics and Plastic Pollution
- biodegradable polymer synthesis and properties
- Polymer Nanocomposites and Properties
- Inorganic and Organometallic Chemistry
- Synthetic Organic Chemistry Methods
- Dendrimers and Hyperbranched Polymers
- Flame retardant materials and properties
- Mesoporous Materials and Catalysis
- Electrospun Nanofibers in Biomedical Applications
- Coordination Chemistry and Organometallics
- Surface Modification and Superhydrophobicity
- Thermal and Kinetic Analysis
- Organic Chemistry Cycloaddition Reactions
- Nutrition and Health Studies
- Nanoparticles: synthesis and applications
- Organometallic Complex Synthesis and Catalysis
- Oxidative Organic Chemistry Reactions
- Polyoxometalates: Synthesis and Applications
- Synthesis and Reactivity of Sulfur-Containing Compounds
- Intellectual Property Rights and Media
Łukasiewicz Research Network
2023-2024
Łukasiewicz Research Network - Textile Research Institute
2014-2020
Lodz University of Technology
1999-2014
GTx (United States)
2013
In-Q-Tel
2009
Łukasiewicz Research Network - Institute for Engineering of Polymer Materials and Dyes
2008
Carnegie Mellon University
1993-1996
Southern Methodist University
1994
North Dakota State University
1988
Plastics have recently become an indispensable part of everyone's daily life due to their versatility, durability, light weight, and low production costs. The increasing use plastics poses great environmental problems incomplete utilization, a very long period biodegradation, negative impact on living organisms. Decomposing lead the formation microplastics, which accumulate in environment organisms, becoming food chain. contamination soils water with poly(vinyl chloride) (PVC) seriously...
α-Elimination from 1 and thermal or photochemical cleavages of 2 produce tBu2Si:, the trapping subsequent products which can be isolated in good to very yields. The silanediyl generated 1a by α-elimination does not dimerize tBu4Si2, but instead produces four-membered ring compound 3 15% yield.
Abstract Flexible, self‐extinguishing silicone foams (SFs) with a relatively low density (0.25–0.45 g/cm 3 ) were obtained from mixture of α,ω‐(dihydroxy)polydimethylsiloxanes, water, flame retardants (melamine and/or expanded graphite), and polyisocyanates [poly(diphenylmethane isocyanate)]. These compositions crosslinked at room temperature branched polymethylhydrosiloxanes the structure (MeSiO 1.5 (MeHSiO) 102 (Me SiO 0.5 5 in presence tin octoate as catalyst. The SFs modified by addition...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA new anion rearrangement involving silyl migration to oxygenA. G. Brook and J. ChruscielCite this: Organometallics 1984, 3, 8, 1317–1318Publication Date (Print):August 1, 1984Publication History Published online1 May 2002Published inissue 1 August 1984https://pubs.acs.org/doi/10.1021/om00086a035https://doi.org/10.1021/om00086a035research-articleACS PublicationsRequest reuse permissionsArticle Views282Altmetric-Citations44LEARN ABOUT THESE...
Literature reviews have described the applications of silver, copper, and zinc ions metallic particles Cu, Ti, Zn oxides, which been found to be useful antimicrobial reagents for biofunctionalization various materials their surfaces. For this purpose, compositions water dispersions containing emulsions synthetic copolymers based on acrylic vinyl monomers, polysaccharides (hydroxyethyl cellulose starch), additives with wetting stabilizing properties were used. Many stable different chemical...
Six liquid branched poly(methylhydrosiloxanes) of new random structures (PMHS-Q), containing quadruple branching units SiO4/2 (Q), both MeHSiO (DH) and Me₂SiO (D) chain building (or only mers MeHSiO), terminal groups Me₃SiO0.5 (M) were prepared by a hydrolytic polycondensation method appropriate organic chlorosilanes tetraethyl ortosilicate (TEOS), in diethyl ether medium at temperature below 0 °C. Volatile low molecular weight siloxanes removed vacuum distillation 150⁻155 Yields PMHS-Q...
The PLA (50% wt.)/PP wt.), (47.5% wt.)/paraffin (5% and (47.25% wt.)/CuO·SiO 2 (0.5% wt.) composite nonwovens were obtained in one-step process by using the melt-blown technique. Thermal properties (by DSC method), physicomechanical parameters, specific surface area, structure SEM elemental analysis EDS susceptibility to hydrolytic degradation (in alkaline neutral media) studied for all nonwovens. antimicrobial of determined dynamic contact conditions method, with three kinds microorganisms...
New branched polymethylvinylborosiloxanes (PMVBSs) with random structures were prepared, and their chemical studied by spectroscopic methods (FTIR, 1H-, 29Si-, 11B-NMR) elemental analysis (% C, % H, Si, B). Average molecular weights M w n determined a size exclusion chromatography (SEC), dynamic viscosities measured in Brookfield cone–plate reoviscometer HBDV-II+cP. Thermal properties of PMVBSs under air nitrogen atmosphere. curves interpreted from the point view physical transitions, taking...
Plastics have recently become an indispensable part of everyone's daily life due to their versatility, durability, light weight and low production costs. The increasing use plastics poses a great danger the very long period degradation, but also negative impact on living organisms. Decomposing lead formation microplastics, which accumulate in environment organisms becoming food chain. Polyvinyl chloride (PVC) contamination soil water seriously threatens ecosystems around world. durability...
Abstract Ring‐opening polymerization of cyclic silanes is described as a new synthetic route to well defined high molecular weight polysilylenes (polysilanes). Strained cyclotetrasilanes with phenyl and methyl substituents at each Si atom in the four‐membered ring are prepared by partial dephenylation octaphenylcyclotetrasilane triflic acid subsequent treatment methylmagnesium bromide. Chemoselectivity, regioselectivity stereoselectivity monomer synthesis discussed detail. In addition...
Abstract Copolymers and homopolymers containing silicon atoms connected to three four other have been prepared characterized. We report the first evidence of dendritic polymers with backbones. made from RSiCl 3 R 1 2 SiCl resemble hybrid materials polysilyne polysilanes. Polymers, which contain tetrasilyl‐substituted Si atoms, [(SiMe ) 4 Si] n (Si) m (Me Si) , also synthesized. These molecules appear be hyperbranched polymers, applications based on their electronic properties. The properties...
On the basis of literature data general characteristics binding agents, carbofunctional silanes (KFS) formula XmRnSi(R'Y)4-m-n [where R - alkyl group (often methyl one), R' alkylene chain, Y functional e.g. Cl, NH2, NR2, OH, OCOR, NCO, CH2=CH, SH, and X capable to hydrolysis OR, OCOR; m=1-3, n=1-2, m+n=3] was presented. Various main areas KFS applications such as modification properties fillers or polymers, sol-gel processes anticorrosion protection were discussed in detail.
The vast literature review (168 references) covers most often used methods of syntheses carbofunctional polysiloxanes (KFPS), mainly hydrosilylation or catalytic equilibration reactions, especially poly(dimethylsiloxane) (PDMS) derivatives containing end side functional groups. main directions KFPS applications were discussed, namely: modification epoxy resins, polyurethanes, polyureas, polycarbonates and other polymeric materials, preparation membranes high gas permeability, immobilization...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFluorine-19 NMR studies of the reaction octaphenylcyclotetrasilane with triflic acidJerzy Chrusciel, Marek Cypryk, Eric Fossum, and Krzysztof MatyjaszewskiCite this: Organometallics 1992, 11, 10, 3257–3262Publication Date (Print):October 1, 1992Publication History Published online1 May 2002Published inissue 1 October 1992https://pubs.acs.org/doi/10.1021/om00046a023https://doi.org/10.1021/om00046a023research-articleACS PublicationsRequest reuse...
Interactions of DMF with hydrosilanes were studied by 29 Si NMR. New resonance signals observed in the NMR spectra HMe 2 SiOSiMe H and some (alkoxy)hydrosilanes for high ratios concentrations [DMF]/[H-silane] at 25 °C. The intensities new increased several times 60 It seems that these resonances correspond to molecular complexes hydrosilanes. role mechanism dehydrocoupling hydroxylic reagents presence Zn(II) Cd(II) halides (X = Cl, Br, I) is discussed. Some common features reaction hydride...
Many stable water dispersions of various chemical compositions containing bioactive compounds: copper silicate, titanium dioxide and zinc oxide (and other auxiliary substances) were developed fabricated - they used for preparation thin hybrid coatings having very good antimicrobial properties against gram negative bacteria (Escherichia coli), positive (Staphylococcus aureus) yeast fungus (Candida albicans). Polyester (PES) nonwovens modified by dip-coating, PES cotton fabrics dip-coating...
The results of investigations on structural aspects styrene-butadiene rubber (SBR) modification with polymethylhydrosiloxanes (PMHS) or polydimethylsiloxanes (PDMS) were presented. modifiers varied in reactivity, measured as a ratio methylhydrosiloxane and dimethylsiloxane units (Table 1). effects modifier reactivity the kinetics radical reaction curing presence dicumyl peroxide (DCP) well sulfur-induced vulcanization determined 2-5, Fig. 2 3). In case DCP use rate efficiency increase...