Электронный каталог
Жанр:Естественные науки (natural_sciences)
Каталог:Статьи
Результат поиска:
2961-2970 из 3173
периодические издания(Журналы)
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.
УДК:
544.4
Предметная рубрика
- Chemical kinetics. Catalysis
Аннотация
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
Ключевые слова
polymer complex, electrocatalyst, water oxidation, oxygen evolution, hy-drophilic polymer, phytic acid
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.
УДК:
665.7.038.64
Предметная рубрика
- Index additives (increasing viscosity index). Depressant additives (reducing the pour point)
Аннотация
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
Ключевые слова
polyethylene-acrylic acid , crude oil, copolymers, pour point depressant , flow, primary amines
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.
УДК:
541.64
Предметная рубрика
- Chemistry of macromolecules. Products of polymerization, polycondensation and polyaddition reactions
Ключевые слова
polyampholyte nanogels, methyl orange, methylene blue, polyampholyte-dye complex, phase transition temperature, dye release
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.
УДК:
544
Предметная рубрика
- Physical chemistry
Аннотация
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)
Ключевые слова
amphoteric terpolymer, hydrolyzed poly, acrylamide, antipolyelectrolyte effect, sand pack model, water flooding, polymer flooding, oil recovery factor
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.
УДК:
544
Предметная рубрика
- Physical chemistry
Аннотация
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.
Ключевые слова
inorganic hybrid crosslinking, dual nanocomposite hydrogel, coil-to-globule-to-coil transition, poly-N-isopropylacrylamide, polar solvent
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.
УДК:
54.057
Предметная рубрика
- Synthesis
Ключевые слова
superhydrophobic coating, superhydrophobic sand, polydimethylsiloxane, titanium oxide nanoparticles, contact angle, electrokinetic potential
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.
УДК:
541.64
Предметная рубрика
- Chemistry of macromolecules. Products of polymerization, polycondensation and polyaddition reactions
Аннотация
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
Ключевые слова
liquid crystalline polymers, phase transitions, polarizing microscopy, thermal stability, high-temperature polycondensation
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.
УДК:
54.04
Предметная рубрика
- Chemical properties (and constants)
Аннотация
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
Ключевые слова
unsaturated polyester, polypropylene glycol maleate, acrylic acid, RAFT-polymerization
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.
УДК:
544.4
Предметная рубрика
- Chemical kinetics. Catalysis
Аннотация
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
Ключевые слова
biopolymer, Cu-containing enzyme, coumaric acid, polyphenol oxidase, antioxidant, antioxidant, spectroscopy, tyrosinase, molecular modeling
Казахстаника
0/0 Свободно
периодические издания(Журналы)
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.
УДК:
541.6
Предметная рубрика
- Chemical structure. Dependence of the properties of substances on the chemical structure. Chemistry of high polymers
Аннотация
The article presents the results of a vegetation field experiment on soil treatment with an interpolyelectrolyte complex
Ключевые слова
biopolymers, polysaccharides, interpolymer complex, vegetation experience, dark chestnut soil
Казахстаника
0/0 Свободно
периодические издания(Журналы)
0/0 Свободно
ZHUBANOV A. A.
AMIDATION OF POLYETHYLENE-ACRYLIC ACID COPOLYMER AS POUR POINT DEPRESSANTS FOR WAXY CRUDE OILS
периодические издания(Журналы)
0/0 Свободно
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
периодические издания(Журналы)
0/0 Свободно
MUKHAMETGAZY N.
OIL RECOVERY AT HIGH BRINE SALINITY CONDITIONS USING AMPHOTERIC TERPOLYMER
периодические издания(Журналы)
0/0 Свободно
JUAN DU
SOLVENTS TRIGGERED COIL-TO-GLOBULE-TO-COIL TRANSITION OF DUAL NANOCOMPOSITE HYDROGELS WITH INORGANIC HYBRID CROSSLINKING
периодические издания(Журналы)
0/0 Свободно
TOKTARBAIULY O.
FABRICATION OF SUPERHYDROPHOBIC SELF-CLEANING COATINGS BY FACILE METHOD: STABLE AFTER EXPOSURE TO LOW TEMPERATURES AND UV LIGHT
периодические издания(Журналы)
0/0 Свободно
DEBERDEEV T. R.
THERMAL BEHAVIOR OF NOVEL AROMATIC OLIGOESTERS AND OLIGOESTERAMIDES
периодические издания(Журналы)
0/0 Свободно
KAZHMURATOVA A. T.
INFLUENCE OF THE RAFT AGENT ON THE REACTION DIRECTION OF THE COPOLYMERIZATION OF POLYPROPYLENE GLYCOL MALEATE WITH ACRYLIC ACID
периодические издания(Журналы)
0/0 Свободно
WU C. Y.
THREE-DIMENSIONAL FINGERPRINT SPECTROSCOPY STUDY ON THE BIOPOLYMER SYSTEM OF POLYPHENOL OXIDASE BINDING WITH CUMALIC ACID
периодические издания(Журналы)
0/0 Свободно
МUSSABAYEVA B. KH.
INTERPOLYELECTROLYTE COMPLEX CHITOSAN – ALGINATE FOR SOIL STRUCTURING
периодические издания(Журналы)
0/0 Свободно