Structure and properties of fibrous materials for purification of solutions of biologically active materials

1989 ◽  
Vol 23 (4) ◽  
pp. 344-349
Author(s):  
A. M. Gusynina ◽  
N. S. Snegireva ◽  
I. A. Tutorskii
Keyword(s):  
Biologically Active ◽  
Fibrous Materials ◽  
Structure And Properties ◽  
Active Materials

Insolubilisation of biologically active materials with novel radiation graft copolymers

1985 ◽  
Vol 25 (4-6) ◽  
pp. 509-516 ◽  
Author(s):  
J.L. Garnett ◽  
S.V. Jankiewicz ◽  
R. Levot ◽  
D.F. Sangster
Keyword(s):  
Graft Copolymers ◽  
Biologically Active ◽  
Active Materials

scholarly journals Taxonomic and ecological structure of weed medicinal plants on the territory of biosphere reserve «Pribuzhskoye Polesye»

2017 ◽  
Vol 6 (2) ◽  
pp. 40-46
Author(s):  
Sergey Vladimirovich Zerkal ◽  
Yulia Vladimirovna Bondar ◽  
Andrey Stepanovich Domas
Keyword(s):  
Medicinal Plants ◽  
Circulatory System ◽  
Biosphere Reserve ◽  
Economic Importance ◽  
Biologically Active ◽  
Environmental Groups ◽  
Active Materials ◽  
Ecological Structure ◽  
Weed Plants ◽  
Diagnostic Signs

The following paper considers aspects of systematic and ecological structure of the weed medicinal plants growing in the biosphere reserve Pribuzhskoye Polesye. The studied weed plants of the region are considered to be used in pharmacology and medicine. Therefore, a detailed study of environmental groups and economic importance of commensal medicinal plants can serve as a basis for new trends development in resource studies of medicinal plants. The paper identifies diagnostic signs, as well as similarities and differences of morphometric evidence. The collection of field data was carried out by reconnaissance of the terrain. The study shows that the territory of the biosphere reserve Pribuzhskoye Polesye is characterized by a rich species composition of synanthropic weed medicinal plants of 57 species growing in different habitats that can be used for the treatment of diseases of the gastrointestinal tract, circulatory system and respiratory system. It is necessary to use weed plants for medicinal purposes to increase the base of receiving biologically active materials of plants.

scholarly journals Comparative analysis of sorption-active fillers and methods of their introduction into a polymer matrix in the process of spinning fibrous composite materials by a solution aerodynamic method

2021 ◽  
pp. 38-43
Author(s):  
A. V. Genis ◽  
A. V. Kuznetsov ◽  
Yu. P. Nekrasov
Keyword(s):  
Comparative Analysis ◽  
Polymer Matrix ◽  
Fibrous Composite ◽  
Fibrous Materials ◽  
Active Materials ◽  
Test Environment ◽  
Protective Properties ◽  
Composition And Structure ◽  
Method Of Solution ◽  
Properties Of Materials

A comparative analysis of the efficiency of the most common types of adsorbents of various natures in a test environment with high humidity for obtaining filled fibrous sorption-active materials by the method of solution aerodynamic spinning is carried out. The influence of the spinning methods, the composition and structure of the obtained sorption-active filled fibrous materials, the nature of the polymer matrix, and the type of organic test substances on the protective properties of materials has been studied.

scholarly journals N-acylation of amides through internal nucleophilic catalysis

2020 ◽  
pp. 174751982092575
Author(s):  
Meng Yao ◽  
Xia Chen ◽  
Yuling Lu ◽  
Zhenhua Guan ◽  
Zengwei Luo ◽  
...  
Keyword(s):  
Natural Products ◽  
Efficient Method ◽  
Pyridine Ring ◽  
Environmentally Friendly ◽  
Biologically Active ◽  
Active Materials ◽  
Nucleophilic Catalysis

An efficient method for N-acylation of amides is described using a pyridine ring as the internal nucleophilic catalyst to give imides in moderate to excellent yields. The methodology provides a facile, air insensitive, and environmentally friendly route to form diversified imide scaffolds, which exist widely in natural products and biologically active materials.

Analysis of Structure and Properties of Chemically Metallized Polyacrylonitrile Fibrous Materials

2019 ◽  
Vol 50 (5) ◽  
pp. 428-432 ◽  
Author(s):  
N. V. Borisova ◽  
S. M. Zakirova ◽  
N. N. Krivosheina
Keyword(s):  
Fibrous Materials ◽  
Structure And Properties

Obtaining Biologically Active Polypropylene Fibrous Materials

2020 ◽  
Vol 992 ◽  
pp. 764-769
Author(s):  
Sergey Bordunov ◽  
Olga Galtseva ◽  
Inna Plotnikova
Keyword(s):  
Ion Exchange ◽  
Biologically Active ◽  
Polymer Fibers ◽  
Polypropylene Fibers ◽  
Fibrous Materials ◽  
Centrifugal Forces ◽  
Polypropylene Melt ◽  
Die Forming

The paper presents the results of the development of the technology of centrifugal-die forming of biologically active fibrous materials. The modification of biologically active polypropylene fibers was carried out directly at the process of their production in the field of centrifugal forces of rotating reactor during their molding from polypropylene melt. The properties of the obtained ion-exchange and biologically active polymer fibers are studied. It is shown that obtained and modified by the centrifugal-die method polypropylene fibers can be used as biologically active fibers.

scholarly journals Effects of Biologically Active Materials Prepared for Several Minerals and Plants on the Growth of Rumen Microbes

2007 ◽  
Vol 17 (11) ◽  
pp. 1555-1561 ◽  
Author(s):  
Sung-Whan Shin ◽  
Shin-Ja Lee ◽  
Ji-Un Ok ◽  
Sang-Min Lee ◽  
Jung-Hwa Lim ◽  
...  
Keyword(s):  
Biologically Active ◽  
Active Materials ◽  
Rumen Microbes

scholarly journals Effect of the Hemin Molecular Complexes on the Structure and Properties of the Composite Electrospun Materials Based on Poly(3-Hydroxybutyrate)

Polymers ◽  
2021 ◽  
Vol 13 (22) ◽  
pp. 4024
Author(s):  
Polina Tyubaeva ◽  
Ivetta Varyan ◽  
Anton Lobanov ◽  
Anatoly Olkhov ◽  
Anatoly Popov
Keyword(s):  
Composite Materials ◽  
Supramolecular Structure ◽  
Molecular Complexes ◽  
Fibrous Materials ◽  
Structure And Properties ◽  
Elongation At Break ◽  
Structure Morphology ◽  
Electrospinning Method ◽  
The Creation ◽  
The One

The creation of innovative fibrous materials based on biodegradable semicrystalline polymers and modifying additives is an urgent scientific problem. In particular, the development of biomedical materials based on molecular complexes and biopolymers with controlled properties is of great interest. The paper suggests an approach to modifying the structure and properties of the composite materials based on poly(3-hydroxybutyrate) (PHB) obtained by the electrospinning method using molecular complexes of hemin. The introduction of 1–5 wt. % of hemin has a significant effect on the supramolecular structure, morphology and properties of PHB-based fibers. Changes in the supramolecular structure intensified with the increasing hemin concentration. On the one hand, a decrease in the fraction of the crystalline phase by 8–10% was observed. At the same time, there is a decrease in the density of the amorphous phase by 15–70%. Moreover, the addition of hemin leads to an improvement in the strength characteristics of the material: the elongation at break increased by 1.5 times, and in the tensile strength, it increased by 3 times. The antimicrobial activity of the hemin-containing composite materials against Escherichia coli and Staphylococcus aureus was confirmed. The obtained materials are proposed to be used in the creation of composite systems for regenerative medicine.

Sign in / Sign up

Export Citation Format

Share Document