Results 1 to 10 of about 2,217 (209)

Laser Raman Spectra of Polymethacrylic Acid [PDF]

open access: bronzeThe Journal of Chemical Physics, 1969
Laser-excited Raman spectra are reported for polymethacrylic acid as a solid, an aqueous gel, and a strongly alkaline aqueous gel. The spectrum of the neutral gel is identical with that of the solid, although alkalization produces some changes. The spectra are analyzed in terms of changes in chain configuration.
Marvin C. Tobin
openaire   +2 more sources

Magnetic Molecularly Imprinted Chitosan Combined with a Paper-Based Analytical Device for the Smartphone Discrimination of Tryptophan Enantiomers. [PDF]

open access: yesBiosensors (Basel), 2023
The separation of enantiomers plays a critical role in pharmaceutical development, ensuring therapeutic efficacy, safety, and patent protection. It enables the production of enantiopure drugs and enhances our understanding of the properties of chiral ...
Karrat A   +4 more
europepmc   +3 more sources

Potentiometric titrations of polymethacrylic acid [PDF]

open access: bronzeJournal of Polymer Science, 1947
AbstractPotentiometric titrations of polymethacrylic acid were performed at different concentrations, different molecular weights, and in the presence of neutral salts, as well as in dioxane‐water mixtures. It was shown that the pH of the solutions fulfills the relation, pH = pK — n log [(1 — α)/α].
Aharon Katchalsky, Pnina Spitnik
openaire   +2 more sources

Polymethacrylic Acid Shows Thermoresponsivity in an Organic Solvent [PDF]

open access: greenMacromolecules, 2019
The alternating sequenced copolymer poly-(methacrylic acid-alt-hydroxyethyl acrylate), p(MAA-alt-HEA), was recently found to display a lower critical solution temperature (LCST) behavior in 1,2-dim...
Esther Cazares-Cortes   +4 more
openaire   +3 more sources

Sorption of Heavy Metal Ions by Composite Materials Based on Polycarboxylic Acids and Bentonite Clay

open access: yesEurasian Chemico-Technological Journal, 2021
The paper shows the study results of sorption capacities of composite gels based on polyacrylic and polymethacrylic acids with bentonite clay as the mineral filler concerning heavy metal ions (Pb+2, Cu+2, Ni+2, Zn+2, Fe+2, Cd+2).
Sh. N. Zhumagaliyeva   +4 more
doaj   +1 more source

Influence of nature and macromolecular characteristics of carrier polymer on immobilization of bolaform ions [PDF]

open access: yesBIO Web of Conferences
The study of the interactions of polyelectrolytes with organic ions and especially with ions of physiologically active substances is of particular. There are wide ranges of polymers used for these purposes, the most convenient “substrate” is considered ...
Urinova Zebo   +7 more
doaj   +1 more source

Composite Polymer-Clay Hydrogels Based on Bentonite Clay and Acrylates: Synthesis, Characterization and Swelling Capacity

open access: yesEurasian Chemico-Technological Journal, 2017
Clay minerals, especially montmorillonite, as well as bentonite minerals with a high content of montmorillonite, have the highest ability to adsorb various organic compounds.
Sh. N. Zhumagaliyeva   +5 more
doaj   +1 more source

Controlled radical fluorination of poly(meth)acrylic acids in aqueous solution

open access: yesNature Communications, 2017
Fluorinated alkenes have very poor reactivity in copolymerizations with non-fluorinated polar monomers. Here the authors show silver-catalyzed decarboxylative radical fluorination of poly(acrylic acid) with Selectfluor in water at room temperature to ...
Yucheng Dong, Zhentao Wang, Chaozhong Li
doaj   +1 more source

Home - About - Disclaimer - Privacy