Strictly speaking, there are four major types of biodegradable plastics: photodegradable plastics, biodegradable plastics, photodegradable and biodegradable plastics, and water-degradable plastics. Photodegradable plastics are plastics mixed with photosensitizer to gradually decompose under sunlight. The degradation time is difficult to predict due to sunshine and climate change. As for water-degradable plastics, the name alone shows that they are too small. Therefore, the biodegradable plastics widely studied are generally biodegradable plastics. Since the 1980s, biodegradable plastics have experienced two generations of development. The first generation of biodegradable plastic is mainly filled with starch (or modified) ordinary plastic, the first generation of biodegradable plastic is not really degradable plastic.Currently, the second generation of fully degradable plastic (mainly represented by starch based plastic and PLA) is widely advocated in the market, which is processed by using fully degradable materials, such as starch and cellulose, after adding a small amount of degradable additives.
For several years, biodegradable plastic packaging has been hailed as a solution to the growing problem of pollution and waste. Biodegradable bags can be divided into which a few kinds?
Biodegradable Garbage Plastic Bag
1. Photodegradable plastics
A material in which polymer chains are broken down in sequence under the influence of ultraviolet light.Most polymers do not absorb the light energy of over 285NM wavelength. However, if the photosensitive groups or chemical additives with photosensitive effects are added to the polymers, the photooxidation reaction process can be accelerated and degradation can occur rapidly.
From the perspective of biodegradation process, it can be divided into two categories: fully biodegradable plastic and biodestructible plastic.From the consideration of the preparation method, it can be divided into four kinds: biological fermentation synthesis, chemical synthesis, utilization of natural macromolecules or minerals of plants and animals.Xiamen full degradation bag.Xiamen biodegradable bags, biodegradable plastic bags.
3. Photooxidation/comprehensive biodegradable plastics
It is one of the main research and development directions of degradable plastics in the world.The plastic remains one of the more difficult research topics.
4. Thermoplastic starch resin degradation of plastics
The starch molecule is allosteric and disordered, forming a thermoplastic starch resin, and then add a very small amount of plasticizer and other additives, is the so-called whole starch plastic. Among them, the starch content is more than 90%, and a small amount of other substances added are also non-toxic and can be completely degraded, so the whole starch is truly completely degraded plastic. Xiamen full degradation bag. Xiamen biodegradable bags, biodegradable plastic bags.
The main purpose
1. Agriculture, forestry and fishery, plastic film, water-retaining materials, seedling pot, seedling bed, rope net, pesticide and agricultural fertilizer slow-release materials.
2. Packaging industry, shopping bags, garbage bags, composting bags, disposable lunch boxes, convenient noodle bowls, cushioning packaging materials.
3. Sporting goods, golf course pins and tees.
4. Sanitary articles, sanitary articles for women, baby diapers, medical MATS, disposable knives.