Electronic catalog
Genre:Естественные науки (natural_sciences)
catalogue:Articles
Search result:
2961-2970 of 3173
periodical press (Magazines)
SHINOHARA H.
Shinohara, H. Polymer Complexes for Electrocatalytic Oxygen Evolution [Text] / H. Shinohara, H. Nishide // Bulletin of the Karaganda University. Chemistry series. - 2022. - № 3. - Р. 67-74. - Bibliogr.: p. 72-73 ISSN 2518-718Х.
UDC:
544.4
Subject headings
- Chemical kinetics. Catalysis
Annotation
The article discussesthe prerequisites, characteristics, and advantages of π-conjugated polymers aselectrochemical catalysts to modify anodic current collectors for water oxidation, including some examples by citing the previous works in literature
Keywords
polymer complex, electrocatalyst, water oxidation, oxygen evolution, hy-drophilic polymer, phytic acid
Kazakhstan
0/0 Free
periodical press (Magazines)
ZHUBANOV A. A.
Zhubanov, A. A. Amidation of Polyethylene-Acrylic Acid Copolymer as Pour Point Depressants for Waxy Crude Oils [Text] / A. A. Zhubanov, V. G. Bondaletov , S. S. Kozhabekov [et al.] // Bulletin of the Karaganda University. Chemistry series. - 2022. - № 3. - Р. 150-157. - Bibliogr.: p. 156-157 ISSN 2518-718Х.
UDC:
665.7.038.64
Subject headings
- Index additives (increasing viscosity index). Depressant additives (reducing the pour point)
Annotation
The present work aims to provide amine-modified polyethylene-acrylic acid (PEAA) copolymers as a pour point depressant (PPD) that will be evaluated for lower pour point of crude oil
Keywords
polyethylene-acrylic acid , crude oil, copolymers, pour point depressant , flow, primary amines
Kazakhstan
0/0 Free
periodical press (Magazines)
AYAZBAYEVA A. YE.
Ayazbayeva, A. Ye. Immobilization of Methyl Orange and Methylene Blue within the Matrix of Charge-Imbalanced Amphoteric Nanogels and Study of Dye Release Kinetics as a Function of Temperature and Ionic Strength [Text] / A. Ye. Ayazbayeva, S. Z. Nauryzova , V. O. Aseyev [et al.] // Bulletin of the Karaganda University. Chemistry series. - 2022. - № 3. - Р. 127-140. - Bibliogr.: p. 138-139 ISSN 2518-718Х.
UDC:
541.64
Subject headings
- Chemistry of macromolecules. Products of polymerization, polycondensation and polyaddition reactions
Keywords
polyampholyte nanogels, methyl orange, methylene blue, polyampholyte-dye complex, phase transition temperature, dye release
Kazakhstan
0/0 Free
periodical press (Magazines)
MUKHAMETGAZY N.
Mukhametgazy, N. Oil Recovery at High Brine Salinity Conditions Using Amphoteric Terpolymer [Text] / N. Mukhametgazy, I. Sh. Gussenov , A. V. Shakhvorostov [et al.] // Bulletin of the Karaganda University. Chemistry series. - 2022. - № 3. - Р. 141-149. - Bibliogr.: p. 147-148 ISSN 2518-718Х.
UDC:
544
Subject headings
- Physical chemistry
Annotation
The viscosity and the oil recovery ability of high molecular weight amphoteric terpolymer (ATP) were tested in different brines and compared with hydrolyzed poly(acrylamide) (HPAM) which is traditionally used in enhanced oil recovery (EOR)
Keywords
amphoteric terpolymer, hydrolyzed poly, acrylamide, antipolyelectrolyte effect, sand pack model, water flooding, polymer flooding, oil recovery factor
Kazakhstan
0/0 Free
periodical press (Magazines)
JUAN DU
Juan Du, Solvents Triggered Coil-to-Globule-to-Coil Transition of Dual Nanocomposite Hydrogels with Inorganic Hybrid Crosslinking [Text] / Juan Du Shimei Xu // Bulletin of the Karaganda University. Chemistry series. - 2022. - № 3. - Р. 115-126. - Bibliogr.: p. 124-125 ISSN 2518-718Х.
UDC:
544
Subject headings
- Physical chemistry
Annotation
This paper presents the study on the reentrant solvation of dual nanocomposite hydrogel poly-N isopropylacrylamide/Laponite/SiO2 (PNIPAM/Laponite/SiO2) upon shrinkage/reswelling process.
Keywords
inorganic hybrid crosslinking, dual nanocomposite hydrogel, coil-to-globule-to-coil transition, poly-N-isopropylacrylamide, polar solvent
Kazakhstan
0/0 Free
periodical press (Magazines)
TOKTARBAIULY O.
Toktarbaiuly, O. Fabrication of Superhydrophobic Self-Cleaning Coatings by Facile Method: Stable after Exposure to Low Temperatures and UV Light [Text] / O. Toktarbaiuly, A. Kurbanova , O. Ualibek [et al.] // Bulletin of the Karaganda University. Chemistry series. - 2022. - № 3. - Р. 158-167. - Bibliogr.: p. 165-166 ISSN 2518-718Х.
UDC:
54.057
Subject headings
- Synthesis
Keywords
superhydrophobic coating, superhydrophobic sand, polydimethylsiloxane, titanium oxide nanoparticles, contact angle, electrokinetic potential
Kazakhstan
0/0 Free
periodical press (Magazines)
DEBERDEEV T. R.
Deberdeev, T. R. Thermal Behavior of Novel Aromatic Oligoesters and Oligoesteramides [Text] / T. R. Deberdeev, A. I. Akhmetshina , L. K. Karimova [et al.] // Bulletin of the Karaganda University. Chemistry series. - 2022. - № 3. - Р. 180-188. - Bibliogr.: p. 188 ISSN 2518-718Х.
UDC:
541.64
Subject headings
- Chemistry of macromolecules. Products of polymerization, polycondensation and polyaddition reactions
Annotation
Series of aromatic oligoesters and oligoesteramides were synthesized via high-temperature polycondensation of aromatic dicarboxylic acids with 4-hydroxybenzoic acid (or 4-aminobenzoic acid) and 1,5-naphthalene diol
Keywords
liquid crystalline polymers, phase transitions, polarizing microscopy, thermal stability, high-temperature polycondensation
Kazakhstan
0/0 Free
periodical press (Magazines)
KAZHMURATOVA A. T.
Kazhmuratova, A. T. Influence of the RAFT Agent on the Reaction Direction of the Copolymerization of Polypropylene Glycol Maleate with Acrylic Acid [Text] / A. T. Kazhmuratova, M. S. Zhunissova , J. Plocek [et al.] // Bulletin of the Karaganda University. Chemistry series. - 2022. - № 3. - Р. 189-197. - Bibliogr.: p. 196-167 ISSN 2518-718Х.
UDC:
54.04
Subject headings
- Chemical properties (and constants)
Annotation
This work demonstrates the capability of synthesizing new polymers based on unsaturated polyester and acrylic acid in the presence of a chain-transfer agent in a dioxane solution
Keywords
unsaturated polyester, polypropylene glycol maleate, acrylic acid, RAFT-polymerization
Kazakhstan
0/0 Free
periodical press (Magazines)
WU C. Y.
Wu, C. Y. Three-Dimensional Fingerprint Spectroscopy Study on the Biopolymer System of Polyphenol Oxidase Binding with Cumalic Acid [Text] / C. Y. Wu, W. О. Ling , Y. C. Yao [et al.] // Bulletin of the Karaganda University. Chemistry series. - 2022. - № 3. - Р. 168-179. - Bibliogr.: p. 176-177 ISSN 2518-718Х.
UDC:
544.4
Subject headings
- Chemical kinetics. Catalysis
Annotation
This study examines the interaction of coumaric acid with polyphenol oxidase, an enzyme that plays a key role in the aging and darkening of plant cells
Keywords
biopolymer, Cu-containing enzyme, coumaric acid, polyphenol oxidase, antioxidant, antioxidant, spectroscopy, tyrosinase, molecular modeling
Kazakhstan
0/0 Free
periodical press (Magazines)
МUSSABAYEVA B. KH.
Мussabayeva, B. Kh. Interpolyelectrolyte Complex Chitosan – Alginate for Soil Structuring [Text] / B. Kh. Мussabayeva, Zh. S. Kassymova; L. K. Orazzhanova [et al.] // Bulletin of the Karaganda University. Chemistry series. - 2022. - № 3. - Р. 102-111. - Bibliogr.: p. 112-113 ISSN 2518-718Х.
UDC:
541.6
Subject headings
- Chemical structure. Dependence of the properties of substances on the chemical structure. Chemistry of high polymers
Annotation
The article presents the results of a vegetation field experiment on soil treatment with an interpolyelectrolyte complex
Keywords
biopolymers, polysaccharides, interpolymer complex, vegetation experience, dark chestnut soil
Kazakhstan
0/0 Free
periodical press (Magazines)
0/0 Free
ZHUBANOV A. A.
AMIDATION OF POLYETHYLENE-ACRYLIC ACID COPOLYMER AS POUR POINT DEPRESSANTS FOR WAXY CRUDE OILS
periodical press (Magazines)
0/0 Free
AYAZBAYEVA A. YE.
IMMOBILIZATION OF METHYL ORANGE AND METHYLENE BLUE WITHIN THE MATRIX OF CHARGE-IMBALANCED AMPHOTERIC NANOGELS AND STUDY OF DYE RELEASE KINETICS AS A FUNCTION OF TEMPERATURE AND IONIC STRENGTH
periodical press (Magazines)
0/0 Free
MUKHAMETGAZY N.
OIL RECOVERY AT HIGH BRINE SALINITY CONDITIONS USING AMPHOTERIC TERPOLYMER
periodical press (Magazines)
0/0 Free
JUAN DU
SOLVENTS TRIGGERED COIL-TO-GLOBULE-TO-COIL TRANSITION OF DUAL NANOCOMPOSITE HYDROGELS WITH INORGANIC HYBRID CROSSLINKING
periodical press (Magazines)
0/0 Free
TOKTARBAIULY O.
FABRICATION OF SUPERHYDROPHOBIC SELF-CLEANING COATINGS BY FACILE METHOD: STABLE AFTER EXPOSURE TO LOW TEMPERATURES AND UV LIGHT
periodical press (Magazines)
0/0 Free
DEBERDEEV T. R.
THERMAL BEHAVIOR OF NOVEL AROMATIC OLIGOESTERS AND OLIGOESTERAMIDES
periodical press (Magazines)
0/0 Free
KAZHMURATOVA A. T.
INFLUENCE OF THE RAFT AGENT ON THE REACTION DIRECTION OF THE COPOLYMERIZATION OF POLYPROPYLENE GLYCOL MALEATE WITH ACRYLIC ACID
periodical press (Magazines)
0/0 Free
WU C. Y.
THREE-DIMENSIONAL FINGERPRINT SPECTROSCOPY STUDY ON THE BIOPOLYMER SYSTEM OF POLYPHENOL OXIDASE BINDING WITH CUMALIC ACID
periodical press (Magazines)
0/0 Free
МUSSABAYEVA B. KH.
INTERPOLYELECTROLYTE COMPLEX CHITOSAN – ALGINATE FOR SOIL STRUCTURING
periodical press (Magazines)
0/0 Free