Results 1 to 10 of about 1,539,294 (186)

Chlorine-Functional Silsesquioxanes (POSS-Cl) as Effective Flame Retardants and Reinforcing Additives for Rigid Polyurethane Foams

open access: yesMolecules, 2021
The subject of the research was the production of silsesquioxane modified rigid polyurethane (PUR) foams (POSS-Cl) with chlorine functional groups (chlorobenzyl, chloropropyl, chlorobenzylethyl) characterized by reduced flammability.
Anna Strąkowska   +3 more
doaj   +1 more source

Comparison of Reactive Sites in 2(1H)-Quinolone Derivatives for the Detection of Biologically Important Sulfur Compounds

open access: yesMolecules, 2023
Novel fluorescent probes based on 2(1H)-quinolone skeleton containing a malonate group (Q1–Q3) were synthesized and proposed for biothiols detection.
Jolanta Kolińska   +3 more
doaj   +1 more source

Natural Polymeric Compound Based on High Thermal Stability Catechin from Green Tea

open access: yesBiomolecules, 2020
Catechin is a plant polyphenol with valuable antioxidant and health-promoting properties. Polymerization is one way to stabilize flavonoids and may cause changes in their specific properties.
Malgorzata Latos-Brozio, Anna Masek
doaj   +1 more source

Original study on mathematical models for analysis of cellulose water content from absorbance/wavenumber shifts in ATR FT-IR spectrum

open access: yesScientific Reports, 2022
The aim of this research was to evaluate the applicability of the attenuated total reflectance Fourier-transform infrared (ATR FT-IR) spectroscopy in the quantitative analysis of the moisture content in cellulose (from 0.5 to 11.0 wt.%).
Stefan Cichosz   +2 more
doaj   +1 more source

Recent progress in bio-based elastomers with intrinsic self-healing mechanisms - part I: Natural rubber modifications

open access: yesJournal of Saudi Chemical Society, 2023
This review is focused on recent achievements in bio-based self-healable elastomeric materials with special regard to elastomers made of natural rubber (NR) and its modified forms, including epoxidized natural rubber (ENR), oxidized natural rubber (oNR ...
Olga Olejnik, Anna Masek
doaj   +1 more source

Natural Phenolic Compounds as Modifiers for Epoxidized Natural Rubber/Silica Hybrids

open access: yesMolecules, 2022
Silica is a popular filler, but in epoxidized natural rubber, can act as a cross-linking agent. Unfortunately, a high amount of silica is necessary to obtain satisfactory tensile strength.
Olga Olejnik, Anna Masek
doaj   +1 more source

Evolution of the star formation histories of BLAST galaxies [PDF]

open access: yes, 2010
We have measured star formation histories (SFHs) and stellar masses of galaxies detected by the Balloon-borne Large Aperture Sub-millimetre Telescope (BLAST) over approximately 9 square degrees centred on the Chandra Deep Field South. We have applied the
Bruzual   +17 more
core   +2 more sources

Establishing a New International Standard for Natural Dyed Textile Goods [Natural Organic Dye Standard (NODS)]

open access: yesJournal of Natural Fibers, 2023
Environmental awareness has become more important among individuals and societies in recent years. The increasing awareness and sensitivity to the environment have made the reintroduction of natural dyes in the textile industries even more important.
Recep Karadag
doaj   +1 more source

Bromide and Chloride Ionic Liquids Applied to Enhance the Vulcanization and Performance of Natural Rubber Biocomposites Filled with Nanosized Silica

open access: yesNanomaterials, 2022
In this study, the possibility of using ionic liquids (ILs) as auxiliary substances improving the vulcanization and physicochemical properties of natural rubber (NR) biocomposites filled with nanosized silica was investigated. Hence, the influence of ILs
Magdalena Maciejewska   +1 more
doaj   +1 more source

Bleaching and diffusion dynamics in optofluidic dye lasers [PDF]

open access: yes, 2007
We have investigated the bleaching dynamics that occur in optofluidic dye lasers where the liquid laser dye in a microfluidic channel is locally bleached due to optical pumping.
Anders Kristensen   +4 more
core   +2 more sources

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