HEVEA-PRODUCTS AND POLYPROPYLENE
Rubrics: 2. CHEMICAL TECHNOLOGY
Authors:
1.
KNITU
2.
Kazanskiy nacional'nyy issledovatel'skiy tehnologicheskiy universitet
3.
Kazan National Research Technological University
Russian Federation
Russian Federation
Type:
Article
Pages:
from 56
to 62
Status:
In work
Language:
Russian
Keywords:
POLYPROPYLENE, CRUDE NATURAL RUBBER, RUBBER TREE SEED OIL, TASTE, ODOUR, HYGIENIC PARAMETERS, WATER ABSORPTION
Abstract (English):
The main source of natural rubber is hevea, a genus of evergreen monoecious rubber-bearing trees. Natural rubber belongs to biodegradable polymers and does not accumulate in nature. In this regard, it can be used as a biodegradable additive for polypropylene, which is not biodegradable. Most studies are devoted to the biodegradation of either purified natural rubber or tire samples made of purified natural rubber, but there are few publications on the biodegradation of unrefined natural rubber. During its purification, the protein-lipid layer contained on the surface of rubber globules is largely removed, while it is he who is the agent of destruction of both the rubber itself and the products obtained on its basis. In addition, another product of hevea is the oil of the seeds of the rubber tree. In its composition, it will contain five fatty acids, as well as residues of phospholipids and proteins. This work is a continuation of a series of studies on the effect of additives of crude natural rubber in glass-filled polyamide and polyethylene. The prevailing contribution of non-rubber components of natural rubber in polymer compositions to the rate of weight loss of materials when they are in the soil and fungal resistance to mycelial fungi of the species Aspergillus niger, Penicillium expansum and Fusarium oxysporum has been established. Since these polymer compositions are supposed to be used, including for household products, it is necessary to find out how well they meet the requirements for such materials, since both natural rubber itself and rubber tree seed oil have specific properties and, in particular, smell. This paper presents information on the effect of the studied biodegrading additives on the organoleptic properties of polypropylene-based compositions (color, odour), resistance to water absorption.
The main source of natural rubber is hevea, a genus of evergreen monoecious rubber-bearing trees. Natural rubber belongs to biodegradable polymers and does not accumulate in nature. In this regard, it can be used as a biodegradable additive for polypropylene, which is not biodegradable. Most studies are devoted to the biodegradation of either purified natural rubber or tire samples made of purified natural rubber, but there are few publications on the biodegradation of unrefined natural rubber. During its purification, the protein-lipid layer contained on the surface of rubber globules is largely removed, while it is he who is the agent of destruction of both the rubber itself and the products obtained on its basis. In addition, another product of hevea is the oil of the seeds of the rubber tree. In its composition, it will contain five fatty acids, as well as residues of phospholipids and proteins. This work is a continuation of a series of studies on the effect of additives of crude natural rubber in glass-filled polyamide and polyethylene. The prevailing contribution of non-rubber components of natural rubber in polymer compositions to the rate of weight loss of materials when they are in the soil and fungal resistance to mycelial fungi of the species Aspergillus niger, Penicillium expansum and Fusarium oxysporum has been established. Since these polymer compositions are supposed to be used, including for household products, it is necessary to find out how well they meet the requirements for such materials, since both natural rubber itself and rubber tree seed oil have specific properties and, in particular, smell. This paper presents information on the effect of the studied biodegrading additives on the organoleptic properties of polypropylene-based compositions (color, odour), resistance to water absorption.
Keywords:
POLYPROPYLENE, CRUDE NATURAL RUBBER, RUBBER TREE SEED OIL, TASTE, ODOUR, HYGIENIC PARAMETERS, WATER ABSORPTION
POLYPROPYLENE, CRUDE NATURAL RUBBER, RUBBER TREE SEED OIL, TASTE, ODOUR, HYGIENIC PARAMETERS, WATER ABSORPTION
