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Effect of the Hydrodynamic Conditions for Sodium Alginate–Papain Colloidal System Synthesis on the Sorption Properties of the Biocomposite 海藻酸钠-木瓜蛋白酶胶体体系合成的水动力学条件对生物复合材料吸附性能的影响
IF 1.1 4区 化学
Colloid Journal Pub Date : 2023-10-04 DOI: 10.1134/S1061933X23600409
S. A. Koksharov, O. V. Lepilova, S. V. Aleeva, G. E. Krichevskii, Yu. S. Fidorovskaya, N. D. Oltarzhevskaya
{"title":"Effect of the Hydrodynamic Conditions for Sodium Alginate–Papain Colloidal System Synthesis on the Sorption Properties of the Biocomposite","authors":"S. A. Koksharov,&nbsp;O. V. Lepilova,&nbsp;S. V. Aleeva,&nbsp;G. E. Krichevskii,&nbsp;Yu. S. Fidorovskaya,&nbsp;N. D. Oltarzhevskaya","doi":"10.1134/S1061933X23600409","DOIUrl":"10.1134/S1061933X23600409","url":null,"abstract":"<p>The regularities have been studied for the formation of molecular associates upon the introduction of papain into a sodium alginate colloidal solution in the laminar low-speed, transient, and turbulent stirring regimes. The relationship between variations in the sorption capacity of the biopolymer composition and the kinetic regularities of the interphase transfer has been studied during the sorption binding of albumin, which is one of the protein-based components of wound exudates, with such components being subject to ensimatic cleavage. The state of the dispersed phase of the colloidal solutions has been estimated by the dynamic light scattering method. The properties of the formed biopolymer films have been studied using the methods of scanning electron microscopy, low-temperature nitrogen adsorption, and static albumin sorption from solutions of limited volumes. The data of the sorption experiments have been analyzed using the Boyd, Morris–Weber, and gel diffusion models, as well as the Lagergren pseudo-first-order and Ho–McKay pseudo-second-order kinetic models. The data have been obtained for substantiating the dosages of the biopolymer matrix used on wound-healing bandages and for the efficient binding of wound necrotic contamination during the time preset according to the technical requirements.</p>","PeriodicalId":521,"journal":{"name":"Colloid Journal","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41086668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Molecular Simulation of Water Structure in Narrow Slitlike Pores 窄缝状孔隙中水结构的分子模拟
IF 1.1 4区 化学
Colloid Journal Pub Date : 2023-10-04 DOI: 10.1134/S1061933X23600525
Yu. D. Fomin, E. N. Tsiok, S. A. Bobkov, V. N. Ryzhov
{"title":"Molecular Simulation of Water Structure in Narrow Slitlike Pores","authors":"Yu. D. Fomin,&nbsp;E. N. Tsiok,&nbsp;S. A. Bobkov,&nbsp;V. N. Ryzhov","doi":"10.1134/S1061933X23600525","DOIUrl":"10.1134/S1061933X23600525","url":null,"abstract":"<p>The structure of water in narrow slitlike pores has been studied by the methods of molecular dynamics simulation. Pores with interwall distances of 6.2–15.5 Å have been considered. Water structures resulting from spontaneous crystallization upon cooling to <i>T</i> = 300 K have been clarified on the basis of two- and three-dimensional order parameters. It has been shown that the observed structures can be described as sections of FCC or HCP crystals.</p>","PeriodicalId":521,"journal":{"name":"Colloid Journal","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41086670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Characterization of Superhydrophobic Coatings Based on PDMS and MQ Resin on Textured Surfaces 基于PDMS和MQ树脂的纹理表面超疏水涂层的表征
IF 1.1 4区 化学
Colloid Journal Pub Date : 2023-10-04 DOI: 10.1134/S1061933X23600483
N. Denman, A. M. Emel’yanenko, O. A. Serenko, L. B. Boinovich
{"title":"Characterization of Superhydrophobic Coatings Based on PDMS and MQ Resin on Textured Surfaces","authors":"N. Denman,&nbsp;A. M. Emel’yanenko,&nbsp;O. A. Serenko,&nbsp;L. B. Boinovich","doi":"10.1134/S1061933X23600483","DOIUrl":"10.1134/S1061933X23600483","url":null,"abstract":"<p>The paper presents the results of studying coatings based on poly(dimethylsiloxane) rubber cross-linked with MQ resin at different contents of the latter. The PDMS : MQ resin ratios have been taken to be 2 : 1, 1 : 1, and 1 : 2. It has been shown that the application of a hydrophobic fluorinated-group-free composite with composition PDMS : MQ = 1 : 1 onto a pre-textured surface by spin-coating or deep-coating results in the formation of superhydrophobic coatings. The coatings are characterized by extremely large contact angles (170°) and rolling angles no larger than 4°. The analysis of variations in the contact angle, surface tension, and contact diameter and volume of a water droplet that has been in contact with a coating for a long time has indicated a high hydrolytic resistance of the obtained coatings.</p>","PeriodicalId":521,"journal":{"name":"Colloid Journal","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41086675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Functional Nanoparticles: Synthesis and Practical Applications 功能性纳米粒子的合成及其实际应用
IF 1.1 4区 化学
Colloid Journal Pub Date : 2023-10-04 DOI: 10.1134/S1061933X2360046X
B. N. Khlebtsov
{"title":"Functional Nanoparticles: Synthesis and Practical Applications","authors":"B. N. Khlebtsov","doi":"10.1134/S1061933X2360046X","DOIUrl":"10.1134/S1061933X2360046X","url":null,"abstract":"<p>A brief review of the current state of research in the field of synthesis, study of properties and practical application of functional nanoparticles is given. The main emphasis is on the work carried out by Russian scientific groups and published in the “Colloid Journal” in the last two years.</p>","PeriodicalId":521,"journal":{"name":"Colloid Journal","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41086659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Effect of Magnetite Content and Specificity of Nickel(II) Ions on Electrokinetic Properties of Composites Based on Porous Silica Particles 磁铁矿含量和镍（II）离子的特异性对多孔二氧化硅复合材料电动性能的影响
IF 1.1 4区 化学
Colloid Journal Pub Date : 2023-10-04 DOI: 10.1134/S1061933X23600446
A. V. Volkova, E. S. Lopatina, E. V. Solovyeva, L. E. Ermakova
{"title":"Effect of Magnetite Content and Specificity of Nickel(II) Ions on Electrokinetic Properties of Composites Based on Porous Silica Particles","authors":"A. V. Volkova,&nbsp;E. S. Lopatina,&nbsp;E. V. Solovyeva,&nbsp;L. E. Ermakova","doi":"10.1134/S1061933X23600446","DOIUrl":"10.1134/S1061933X23600446","url":null,"abstract":"<p>Powders of magnetite and its composites have been obtained on the basis of macroporous high-silica glass particles containing different amounts of Fe<sub>3</sub>O<sub>4</sub>. XRD, XPS, and Raman spectroscopy have been employed to confirm the formation of a magnetite phase in all iron-containing samples. The surface morphology and elemental composition of porous composite particles have been studied by SEM and EDX methods. It has been found that the external surface of porous silica particles is modified to different extents. It has been shown that the position of the isoelectric point (IEP) and the values of the zeta-potentials for the composites coincide in indifferent electrolyte solutions. Two isoelectric points are observed in the pH dependences of the zeta-potential for the composite particles in nickel chloride solutions. In dilute solutions containing specifically adsorbed nickel ions and at pH below pH<sub>IEP-2</sub>, the electrokinetic properties of the composite particles are primarily affected by magnetite phase content in a composite powder and, at rather high concentrations of Ni<sup>2+</sup> ions, by their specificity with respect to oxide surfaces.</p>","PeriodicalId":521,"journal":{"name":"Colloid Journal","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41086658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
On the Effect of Viscosity Relaxation on Electromagnetic Radiation Intensity of an Oscillating Charged Droplet 粘性弛豫对振荡带电液滴电磁辐射强度的影响
IF 1.1 4区 化学
Colloid Journal Pub Date : 2023-10-04 DOI: 10.1134/S1061933X23700199
A. I. Grigor’ev, N. Yu. Kolbneva, S. O. Shiryaeva
{"title":"On the Effect of Viscosity Relaxation on Electromagnetic Radiation Intensity of an Oscillating Charged Droplet","authors":"A. I. Grigor’ev,&nbsp;N. Yu. Kolbneva,&nbsp;S. O. Shiryaeva","doi":"10.1134/S1061933X23700199","DOIUrl":"10.1134/S1061933X23700199","url":null,"abstract":"<p>Theoretical asymptotic calculations linear with respect to small dimensionless amplitude of oscillations have been employed to study the influence of the viscoelastic properties of a charged droplet of an electrically conducting viscous liquid on the intensity of its electromagnetic radiation. It has been shown that allowance for the effect of viscosity relaxation leads to a decrease in the damping decrement value, which is determined by energy losses for electromagnetic wave emission, and the intensity of high-frequency electromagnetic radiation; a substantial reduction in the viscous damping decrement of small cloud droplets; and an essential dependence of the viscous damping decrement on the characteristic relaxation time. It has been found that the viscosity relaxation of a liquid has no significant effect on damped capillary oscillations and electromagnetic radiation of rain droplets. Viscoelasticity and viscosity of the liquid do not influence the conditions critical for the realization of the electrostatic instability of a droplet with respect to its own charge.</p>","PeriodicalId":521,"journal":{"name":"Colloid Journal","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41086669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In Situ Encapsulation of Nickel Nanoparticles in Polysaccharide Shells during Their Fabrication by Electrical Explosion of Wire 金属丝电爆炸法制备纳米镍在多糖壳中的原位包封
IF 1.1 4区 化学
Colloid Journal Pub Date : 2023-10-04 DOI: 10.1134/S1061933X23600410
A. P. Safronov, I. V. Beketov, A. V. Bagazeev, A. I. Medvedev, A. M. Murzakaev, T. V. Terziyan, A. Yu. Zubarev
{"title":"In Situ Encapsulation of Nickel Nanoparticles in Polysaccharide Shells during Their Fabrication by Electrical Explosion of Wire","authors":"A. P. Safronov,&nbsp;I. V. Beketov,&nbsp;A. V. Bagazeev,&nbsp;A. I. Medvedev,&nbsp;A. M. Murzakaev,&nbsp;T. V. Terziyan,&nbsp;A. Yu. Zubarev","doi":"10.1134/S1061933X23600410","DOIUrl":"10.1134/S1061933X23600410","url":null,"abstract":"<div><div><h3>\u0000 <b>Abstract</b>—</h3><p>Nickel nanoparticles are obtained by electrical explosion of wire under the action of a high-voltage discharge followed by condensation in an inert gas medium. When butane is added to the gas medium, a carbon shell is deposited onto the condensing nickel particles. Immediately after the synthesis, liquid-phase modification of nanoparticles is carried out with aqueous solutions of polysaccharides agarose and gellan. As a result, a polymer shell is formed on particles of Ni and nickel particles coated with a carbon shell (Ni@C). The dispersity, crystalline structure, and magnetic properties of Ni and Ni@C nanoparticles are characterized by transmission microscopy, X-ray diffraction analysis, and vibration magnetometry. The total carbon content on the surface of the nanoparticles is determined by thermal analysis with simultaneous mass spectrometry. It is shown that, under the studied conditions, polysaccharides are deposited onto the nanoparticles in amounts up to 2 wt % to form a shell with a thickness of about 4 nm. When agarose is used as a modifier, the content of the polysaccharide increases with the concentration of the modifying solution. When gellan is used as a modifier, a more complex concentration dependence is observed: an initial increase is followed by a decrease in the amount of deposited polysaccharide. The results are discussed from the viewpoint of the influence of the molecular weight of a polymer on the adsorption process.</p><figure><div><div><div><picture><img></picture></div></div></div></figure></div></div>","PeriodicalId":521,"journal":{"name":"Colloid Journal","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41086646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the possibilities of mining waste utilization in the Murmansk Region 摩尔曼斯克地区采矿废物利用的可能性
IF 1.1 4区 化学
Colloid Journal Pub Date : 2023-08-24 DOI: 10.19110/1994-5655-2023-3-79-85
S. Ivanov
{"title":"On the possibilities of mining waste utilization in the Murmansk Region","authors":"S. Ivanov","doi":"10.19110/1994-5655-2023-3-79-85","DOIUrl":"https://doi.org/10.19110/1994-5655-2023-3-79-85","url":null,"abstract":"Mining waste products have a significant effect on the vulnerable natural environment of the Arctic and the human health. So, the problem of mining waste utilization is of a particular relevance for the Murmansk Region. The article discusses the existing legal and regulatory framework, promising directions for the development of technologies in this area, and the current waste utilization methods. The author highlights the practical results of mining waste disposal. The tailings facilities (TSF) are considered as technogenic deposits with a low content of valuable components and so can be used in the building industry due to low cost of such materials and reduction of environmental damage during TSF removal.","PeriodicalId":521,"journal":{"name":"Colloid Journal","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84095086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Economics, organization and management of enterprises, industries, and complexes 经济学，企业、工业和综合体的组织和管理
IF 1.1 4区 化学
Colloid Journal Pub Date : 2023-08-24 DOI: 10.19110/1994-5655-2023-3-86-97
I. Mal'ceva
{"title":"Economics, organization and management of enterprises, industries, and complexes","authors":"I. Mal'ceva","doi":"10.19110/1994-5655-2023-3-86-97","DOIUrl":"https://doi.org/10.19110/1994-5655-2023-3-86-97","url":null,"abstract":"The article studies the concepts of sustainable agriculture and the factors of internal and external systems influencing its formation. Having surveyed the principles of sustainable agriculture, the author clarified that the agricultural sustainability largely depends on the efficient management of natural systems and resources. The work presents a conceptual model for sustainable agriculture and rural areas defined as a socio-economic-natural complex system that includes three subsystems as agrarian-economic, rural-ecologic, and rural-social subsystems. The purpose of the integrated system is to coordinate the interaction and interconnection between the rural subsystems and their components to achieve harmony between agricultural production, the rural environment, and the well-being of peasants and rural residents. The modern methods of sustainable agriculture, and therefore sustainable resource management, mean the resource-saving, organic, biodynamic, climatically optimized, regenerative agriculture, relate to sustainable intensification and resource-saving agriculture. To form the agricultural sustainability in the northern region, the author proposes new approaches to its development such as the integrated farming system, agroforestry, site specific crop farming, integrated nutrient management and integrated pest management.","PeriodicalId":521,"journal":{"name":"Colloid Journal","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86250746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
About the spatial development (judgment about the subject and methodology uncertainty) 关于空间发展(关于主体的判断和方法论的不确定性)
IF 1.1 4区 化学
Colloid Journal Pub Date : 2023-08-24 DOI: 10.19110/1994-5655-2023-3-103-111
V. Lazhencev
{"title":"About the spatial development (judgment about the subject and methodology uncertainty)","authors":"V. Lazhencev","doi":"10.19110/1994-5655-2023-3-103-111","DOIUrl":"https://doi.org/10.19110/1994-5655-2023-3-103-111","url":null,"abstract":"The author sees the uncertainty of the spatial development themes in the disagreement of interpretation of the research subject, the substitution of specific spatial processes by general regional economy postulates, the combination of concepts and methods for studying the spatial and territorial aspects of socio-economic development, the lack of consistency in the organization of practical work in the field of state management of the spatial structure of Russia. Economic mismanagement relates to the difficulties of combining the constitutional provisions on the unity of the market space and the objective necessity for its administrative regulators of a non-market nature. The positive examples of studying the possibilities of optimizing the space of people’s life activity allow us to understand the subject essence of research in this area of science.","PeriodicalId":521,"journal":{"name":"Colloid Journal","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89541482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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