THE EFFECT OF WATER-SOLUBLE POLYMERS ON THE PROPERTIES OF FILMS OBTAINED FROM COMPOSITIONS BASED ON POLYVINYL ALCOHOL
Rubrics: 2. CHEMICAL TECHNOLOGY
Authors:
1.
KNITU
2.
KNITU
Type:
Article
Pages:
from 94
to 100
Status:
Published
Received:
22.12.2025
Accepted:
23.12.2025
Published:
23.12.2025
Language:
Russian
Keywords:
WATER-SOLUBLE FILMS, POLYVINYL ALCOHOL, POLYACRYLAMIDE, POLYVINYLPYRROLIDONE, DEXTRAN, DISSOLUTION RATE, MECHANICAL PROPERTIES, TRANSMISSION COEFFICIENT
Abstract (English):
The expansion of the application area of polymer packaging materials and the increase in their production volume have led to the fact that the countries consuming such packages do not have time to organize their collection and recycling after use, which creates a significant burden on the environment. The problem is aggravated by the fact that the destruction of used containers and packaging made of polymers under the influence of ultraviolet radiation, atmospheric oxygen, moisture and microorganisms takes quite a long time. An effective way to improve the environment is to use water-soluble polymers for packaging that can decompose in the environment in a relatively short time into carbon dioxide and water. Currently, film materials based on polyvinyl alcohol compositions are most widely used. This is due to its high technological and operational properties. The main direction for improving such materials is to increase the rate of their dissolution. The possibility of increasing the dissolution rate of film materials based on polyvinyl alcohol by introducing polyacrylamide, polyvinylpyrrolidone or dextran into the composition is considered. It has been established that the introduction of these polymers into the composition for the production of film materials allows to reduce the dissolution time. However, the introduction of polyacrylamide and dextran leads to deterioration of the mechanical properties and transparency, which is due, as experiments have shown, to the poor compatibility of polyvinyl alcohol with these polymers. The introduction of polyvinylpyrrolidone also reduces the dissolution time, but the mechanical properties and transparency of the resulting film remain at a sufficiently high level. It has been suggested that the reduction in the dissolution time of film materials when introducing polyvinylpyrrolidone into the composition with polyvinyl alcohol is due to the fact that polyvinylpyrrolidone is built into the molecular lattice of polyvinyl alcohol and interacts with it due to the formation of an intermolecular hydrogen bond. The formation of a polymer complex prevents crystallization, due to which the rate of dissolution of the film in water increases.
The expansion of the application area of polymer packaging materials and the increase in their production volume have led to the fact that the countries consuming such packages do not have time to organize their collection and recycling after use, which creates a significant burden on the environment. The problem is aggravated by the fact that the destruction of used containers and packaging made of polymers under the influence of ultraviolet radiation, atmospheric oxygen, moisture and microorganisms takes quite a long time. An effective way to improve the environment is to use water-soluble polymers for packaging that can decompose in the environment in a relatively short time into carbon dioxide and water. Currently, film materials based on polyvinyl alcohol compositions are most widely used. This is due to its high technological and operational properties. The main direction for improving such materials is to increase the rate of their dissolution. The possibility of increasing the dissolution rate of film materials based on polyvinyl alcohol by introducing polyacrylamide, polyvinylpyrrolidone or dextran into the composition is considered. It has been established that the introduction of these polymers into the composition for the production of film materials allows to reduce the dissolution time. However, the introduction of polyacrylamide and dextran leads to deterioration of the mechanical properties and transparency, which is due, as experiments have shown, to the poor compatibility of polyvinyl alcohol with these polymers. The introduction of polyvinylpyrrolidone also reduces the dissolution time, but the mechanical properties and transparency of the resulting film remain at a sufficiently high level. It has been suggested that the reduction in the dissolution time of film materials when introducing polyvinylpyrrolidone into the composition with polyvinyl alcohol is due to the fact that polyvinylpyrrolidone is built into the molecular lattice of polyvinyl alcohol and interacts with it due to the formation of an intermolecular hydrogen bond. The formation of a polymer complex prevents crystallization, due to which the rate of dissolution of the film in water increases.
Keywords:
WATER-SOLUBLE FILMS, POLYVINYL ALCOHOL, POLYACRYLAMIDE, POLYVINYLPYRROLIDONE, DEXTRAN, DISSOLUTION RATE, MECHANICAL PROPERTIES, TRANSMISSION COEFFICIENT
WATER-SOLUBLE FILMS, POLYVINYL ALCOHOL, POLYACRYLAMIDE, POLYVINYLPYRROLIDONE, DEXTRAN, DISSOLUTION RATE, MECHANICAL PROPERTIES, TRANSMISSION COEFFICIENT
