Biodegradable resin composition

Abstract

This invention provides a biodegradable resin composition and a biodegradable molding using the same and in particular, it not only have satisfactory biodegradability, processability and properties required for biodegradable resins by comprising cellulose diacetate as a main component but also can lower manufacturing costs and prevent environmental contamination by preparing the biodegradable resins by reusing a cause factor of environmental contamination.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a biodegradable resin composition and a biodegradable molding using the same and more particularly, it relates to a biodegradable resin composition comprising cellulose diacetate as a main component, which can not only satisfy the biodegradability, processability and properties required for a biodegradable resin but also lower manufacturing costs and prevent environmental contamination by producing the biodegradable resin by reusing a cause factor of environmental contamination and a biodegradable molding using the same. [0003] 2. Description of Related Art [0004] As plastics are light and strong and they are easy to be processed and not easily degraded, their consumption from industrial materials to disposable products and wrapping materials is continuously increasing. Hard wastes including such plastics are disposed by landfill or incineration after their use, or reused by recyclin...

AI Technical Summary

Benefits of technology

[0014] Also, it is another object of the invention to provide a biodegradable resin composition which can lower the manufacturing costs of the biodegradable resin composition to be produced and prevent environmental contamination in advance by reusing a cause factor inducing environmental contamination and a biodegradable molding using the same.

Problems solved by technology

As plastics are light and strong and they are easy to be processed and not easily degraded, their consumption from industrial materials to disposable products and wrapping materials is continuously increasing.

However, the disposal of wastes by landfill, incineration, etc. gives rise to environmentally severe damage.

However, as the starch is added, a plasticizer is to be added, which causes discoloring and bad fume during processing and the properties of the plastics are remarkably deteriorated.

However, the ethylene-acrylic acid copolymers are expensive and the properties of the produced films are extremely fragile for practical use, and their biodegradability is not good.

However, unreacted coarse monomers are likely to remain, and in the case that the content of the starch is more than 30%, mechanical properties are remarkably reduced, and the polyethylene which is used as a matrix resin is not degraded and remains.

The cellulose acetate, a conversion form into an acetic ester of cellulose, has been known to be inherently biodegradable but in fact, its biodegradability is not good.

Thus, although molding products comprising the cellulose acetate are laid under the grounds, they maintain the prototype of the molding products until 1 or 2 years and it takes considerably long time for the molding products to be completely biodegraded.

However, in this method, at the point when the acid compound is added to the cellulose acetate, the cellulose acetate is chemically hydrolyzed by the influence of the acid compound and this hydrolysis reaction generates acetic acid, which gives strong acetic acid odor to the cellulose acetate products.

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