Ramie stick reinforced starch-based fully-degradable plastic film and preparation method thereof

Abstract

The invention discloses a ramie stick reinforced starch-based fully-degradable plastic film and a preparation method thereof. The ramie stick reinforced starch-based fully-degradable plastic film is characterized by being prepared from the following raw materials in parts by weight: 60-65 parts of corn starch, 7-9 parts of nano-montmorillonite, 0.6-0.7 part of peanut oil, 1.2-1.4 parts of tetrabutyl titanate, 12-14 parts of ramie sticks, 30-35 parts of polyvinyl alcohol, 12-14 parts of casein, 0.6-0.8 part of liquid paraffin, 11-15 parts of triethyl citrate, 1-1.5 parts of stearic acid and 1.5-2 parts of antioxidant 1010. The plastic film prepared by the preparation method disclosed by the invention is high in strength, the process is convenient to industrially control and capable of realizing industrialized production, and the production raw materials are simple and easily available, and safe and non-toxic; and the product is capable of achieving complete degradation, environment-friendly after being discarded, capable of being prepared into plastic bags, preservative films and the like for food package, and worthy of large-area popularization.

Description

Technical field [0001] The invention relates to the technical field of plastic films, in particular to a ramie bone reinforced starch-based fully degradable plastic film and a preparation method thereof. Background technique [0002] At present, the traditional polymer material industry has slowed down due to the increasing cost of petroleum resources. At the same time, the environmental pollution caused by polymer materials has become increasingly prominent and has attracted great attention from the society. Natural polymer material is a recyclable resource. It can be decomposed by microorganisms into substances that do not pollute the environment, such as inorganic small molecular substances, water and carbon dioxide, etc., and natural polymer materials have strong plasticity and can be passed through A variety of modification methods make it a desired functional material with certain special properties. Therefore, many countries have invested a lot of manpower and material res...

AI Technical Summary

Problems solved by technology

However, while starch improves the degradability of plastics, on the one hand, it will cause a decrease in its physical and mechanical properties, making it difficult to process. On the other hand, it is also too hydrophilic, which is not compatible with most general-purpose resins. Poor, resulting in a significant decline in the mechanical properties of the film, poor water resistance, thus hindering the wide application of starch plastics in the process of industrialization

[0004] Polyvinyl alcohol is a widely used high molecular polymer, its performance is between plastic and rubber, it contains a large number of polar hydroxyl groups, its toxicity is very low, its molecular chain structure is symmetrical and regular, and it has unique strong adhesion, Film flexibility, smoothness, oil resistance, solvent resistance, protective colloid, gas barrier and water resistance after special treatment, but also has a certain degree of biodegradability, in the presence of bacteria in a wet environment 6 It can be completely decomposed into water and carbon dioxide within one month. It is a completely biodegradable material, but the degradation process has high requirements on the degradation environment, so the degradation rate is still relatively slow.