JournalTOCs

Fibre Chemistry
Journal Prestige (SJR): 0.173

Number of Followers: 4

Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1573-8493 - ISSN (Online) 0015-0541
Published by Springer-Verlag

[2626 journals]

Development of Methods for Improving the Functional and Operational
Properties of Polymer Textile Materials
- Abstract: Methods for improving the functional and operational properties of polymeric textile materials are described, on the basis of which recommendations are given for the design of new materials with specified functional properties.
  PubDate: 2020-11-28
Change of Silk Fibroin Molecular Mass During Dissolution in Ionic Liquids
- Abstract: Silk fibroin is a unique protein polymer with broad potential for medical applications. Fibroin is significantly degraded and the materials obtained from it have poor mechanical characteristics if silk fiber is dissolved in traditional solvents. The present work used gel electrophoresis to study the dissolution of fibroin in ionic liquids. Fibroin degradation was shown to increase with increasing temperature and dissolution time. The optimal conditions for dissolution that allowed the heavy and light chains of fibroin to be preserved intact were proposed.
  PubDate: 2020-11-28
System Analysis Methods of Relaxation and Recovery Properties of Polymer
Textile Materials for Technical Purposes
- Abstract: The present paper describes system-analysis methods for describing relaxation and recovery properties of polymer textile materials for technical purposes developed on the basis of mathematical modeling and computer prediction. Polymer textile materials for technical purposes are increasingly being used in various sectors of technology. This has caused an increasing interest in the study of their functional and performance properties. During the operation, important functional properties of polymer textile materials for technical purposes involve their relaxation and recovery properties. For this reason, special attention should be paid to the study of these properties in such materials using mathematical modeling and system analysis.
  PubDate: 2020-11-27
Alternative Feedstock for Producing Nitrocellulose
- Abstract: Tendencies toward growth in the demand for nitrocellulose in most developed countries and an expansion of applications owing to the creation of safe production technologies are observed. Nitration of cellulose from deciduous tree species, i.e., a 60:40% mixture of birch and aspen, is investigated. The structure of the nitration product is determined using IR and Raman spectroscopy. Cellulose nitrate characterized by a nitrogen mass fraction >10% is obtained for the optimal nitration parameters.
  PubDate: 2020-11-27
Methods for Numerical Prediction of Relaxation and Reduction Properties of
Polymer Textile Materials
- Abstract: Methods of numerical prediction of relaxation and reduction properties of polymer textile materials are considered. Numerical prediction is performed based on integration of the governing Boltsmann–Volterra equations applied to relaxation-reduction processes of the materials under investigation.
  PubDate: 2020-11-27
Mathematical Modelling and System Analysis of Viscoelastic-Plastic
Properties of Nautical Polymer Ropes
- Abstract: Methods for mathematical modeling and system analysis of the viscoelastic-plastic properties of nautical polymer ropes are described. Recommendations for the design of new rope prototypes are provided together with a specification of the functional properties.
  PubDate: 2020-11-27
Criteria for Qualitative Assessment of Relaxation-Recovery Properties of
Polymer Textile Materials for Technical Purposes
- Abstract: New criteria for the qualitative assessment of the relaxation-recovery properties of polymer textile materials for technical purposes, obtained on the basis of the study of parameters-characteristics of mathematical models of the relaxation and recovery processes of these materials, are proposed. The developed criteria allow carrying out a qualitative assessment of the relaxation-recovery properties of polymer textile materials for technical purposes, which significantly reduces the technical and economic costs of designing these materials with specified relaxation and recovery properties, since there is no need to manufacture pilot batches of these materials.
  PubDate: 2020-11-27
Electrical Properties of Carbon Fiber–Plasma Composite
- Abstract: The behavior of carbon fiber – plasma composite in strong pulse fields is investigated. Itis shown that the principal current travels through the plasma which shunts the resistance of the carbon fiber, preserving the fiber against complete disintegration. The contribution of the fiber to the conduction of the composite is determined by the bias current that arises as a consequence of the polarization of is dielectric component in an alternating electrical field.
  PubDate: 2020-11-27
Electric Conductive and Mechanical Properties of Fibers Based on
Polylactide and Carbon Nanofiber
- Abstract: Using a twin-screw microextruder, fibers based on polylactide and carbon nanofibers (CNFs) were obtained with 4- and 6-fold orientational stretching. The electroconductive and deformation-strength properties of composite fibers were investigated depending on the concentration of the filler and orientational stretch ratio of the polymer. It is shown that with the introduction of low concentrations of CNF (~1 wt%) and with the use of additional high-temperature orientational stretching of the polymer by a factor of 4, it is possible to create composite polylactide fibers with knot-pull tensile strength increased by 20% and with electro-scattering properties.
  PubDate: 2020-11-27
Modeling the Process of Synthesis of Nanoparticles into Fibrous Materials
by the Method of Chemical Reduction
- Abstract: Silk fibers served as a matrix for the reduction of nanoparticles from a silver salt solution. A mathematical model describing the dependence of the total content of reduced silver on a fiber Y on the input parameters X1, X2, X3, X4 (silver concentration in the treatment solution, concentration of reducing agent, temperature and duration of the reduction process, respectively) is constructed. A chemically substantiated nonlinear regression model and a two-layer perceptron are proposed, which make it possible to obtain mathematical expressions for the dependence of the silver content on silk fibers on the input parameters. Both models adequately reflect the experimental data – the error of the regression model is 0.16, the error of the two-layer perceptron is 0.14.
  PubDate: 2020-11-27
Production of Potassium Phosphate by a Conversion Method
- Abstract: A conversion method using a closed cycle for production of potassium dihydrogen phosphate from available feedstock, i.e., hot-leached potassium chloride (98%) or its mixture with sodium chloride, purified extraction phosphoric acid, and technical sodium carbonate (bicarbonate), with separate addition of the reagents is reported. Solubility diagrams of the KCl–NaH2PO4–NaCl–KH2PO4–H2O system with joint and separate addition of the starting reagents are calculated. A product of higher quality with lower chloride content is shown to be produced in the second instance. The calculations are confirmed by laboratory experiments.
  PubDate: 2020-11-27
Prediction of Strength Properties of Elastic Polymeric Composite Materials
Based on Polypropylene Woven Tapes
- Abstract: Polymer composite materials are widely used in various fields of human activity. Their properties are largely determined by the properties of their components, in particular, reinforcing textile materials. In this study, the task is to obtain and investigate the properties of a composite based on reinforcing textiles – polypropylene fabric. The task was solved by theoretical modeling of the mechanical properties of a polymer composite material with subsequent verification of the prediction results by experimental studies. Experimental verification of the mechanical properties of the composite obtained by the technology developed by the authors showed a sufficiently high degree of coincidence of the results for various mechanical properties of the composite.
  PubDate: 2020-11-27
Development of Composite Fibrous Materials with Improved Mechanical
Properties
- Abstract: Composite monofilaments based on a polyethyleneterephthalate matrix and inorganic dispersed nanoparticles (silicon dioxide and aluminum oxide) were produced by the melt method. The structure was investigated, and the optimum parameters of the formation process were determined. It was shown that composite materials with improved deformation–strength characteristics can be obtained if small concentrations of modified dispersed nanofillers are added.
  PubDate: 2020-11-26
Directions of Stimulation of Innovative Development of Light Industry
Enterprises Based on Use of Chemical Fibers
- Abstract: The directions of stimulation of innovative development of light industry enterprises based on use of chemical fibers are investigated. Use of chemical fibers abroad and in the Russian Federation is analyzed and conclusions are drawn regarding formulation of future strategy of development of enterprises based on extensive scientific research and use of the results of application of innovative technologies and methods of management, digitization of production, development of innovative products, concentration of production with vertical integration and creation of industrial clusters.
  PubDate: 2020-11-26
Automated Selection of Steam Pressing Regimes for Blended Cloth Items by
Fuzzy Modeling
- Abstract: Mixed cloths of natural and synthetic fibers are most often used to fabricate garments. Because steam pressing regimes according to standards and manufacturer’s data for some materials or others [1, 2] differ in steam temperature, flow rate, and pressure, these parameters must be considering for pressing items and designing adaptive control systems. Various manufacturers recommend pressing temperatures for the same fiber that differ by 30 °C and more. Therefore, the selection of a steam pressing temperature for mixed cloth is rationally evaluated using fuzzy modeling. Steam pressing of garments can produce a large variety of bulk item forms.
  PubDate: 2020-11-26
Modification of Polyacrylonitrile Fibers with Fibroin Nanoparticles.
Production and Attachment of Fibroin Nanoparticles to Pan Fiber
- Abstract: An aqueous solution of fibroin nanoparticles, obtained as a result of thermal hydrolysis of the waste products from silk fibers, was used to modify polyacrylonitrile fibers. According to light scattering data, the fibroin nanoparticles in aqueous solution had hydrodynamic radii of 75-95 nm. It was established by chromato-mass spectroscopy that the nanoparticles contain oligomeric fragments of a polypeptide chain and the products from their condensation with the formation of cyclic diketopiperazines. In the IR spectra of the fibers after treatment with fibroin nanoparticles there are bands associated with the absorption of N–H groups. The intermolecular interaction between the carbonyls of PAN in the fiber and the active groups of the fibroin oligomers can be judged from the shift of the C=O bands of itaconic acid into the low-frequency region and from the increase in the absorption of the ester groups. Strong attachment of the fibroin nanoparticles to the PAN fiber is favored by chemical reaction between the carboxyls of the itaconic acid in the structure of the fiber and the amino groups of the fibroin fragments. The increase of the relative nitrogen content after modification of the PAN fibers with fibroin nanoparticles is confirmed by the results of elemental analysis.
  PubDate: 2020-11-26
Use of Methods of Spectral Modeling and Computer-Aided Prediction of
Viscoelasticity to Determine Functionality of Nonwoven Polymeric Materials
- Abstract: Use of methods of spectral modeling and computer-aided prediction of viscoelasticity of nonwoven polymeric materials to determine their functionality is studied. The proposed methods can be used to solve technological problems of sampling nonwoven polymeric materials possessing the desired functional and performance properties.
  PubDate: 2020-11-26
Mathematical Modeling and Methods of Determination of Functional-Use
Relaxation-Recovery Properties of Polymer Textile Materials
- Abstract: Mathematical models and methods of determination of functional-use relaxation-recovery properties of textile industry materials having decisive importance for comparative analysis and qualitative sampling of materials having specific properties are reviewed.
  PubDate: 2020-11-26
Relationship of Mathematical and Structural Modeling of the Electrical
Conducting Properties of Composite Film Fibers with Isotropic and
Anisotropic Carbon Nanofillers
- Abstract: Relationships are established between the parameters of mathematical models describing the change of electrical resistance of a thermoplastic polymer matrix filled with various types of conducting carbon particles and physical models allowing features of experimental concentration dependences of orientationally drawn composites to be explained. The difference between anisotropic and isotropic fillers is explained. The structuring mechanism of conducting chains of both types of fillers and their destruction with four- and eight-fold drawing of the polymer are illustrated.
  PubDate: 2020-11-26
Modification of Surface of Carbon Fiber Materials by Plasma Treatment
(Review)
- Abstract: Modern processes for plasma modification of carbon fiber materials with the aim of improving the degree of adhesive interaction at the boundary between the polymeric matrix and the carbon reinforcing filler are reviewed. The strength of adhesion of carbon fibers to the polymeric matrix at the interface has a deciding effect on the strength of the carbon plastics in shear and compression and determines to a significant degree the crack resistance of the carbon plastic materials, the specific impact viscosity, and the dynamic fatigue resistance, thereby determining the durability of constructions made from them.
  PubDate: 2020-10-17