In the past ten years, plastics have penetrated into all walks of life and entered thousands of households with their convenience, and at the same time they have brought huge environmental pollution. Various international and domestic environmental protection policies, copyrights, laws and regulations, and environmental protection bills have been promulgated one after another. It proves that the demand for biodegradable plastics is gradually entering normalization and industrialization, and the development of fully biodegradable plastics is entering a golden period of vigorous development.
Completely biodegradable plastics: Completely biodegradable plastics are mainly made from natural macromolecules (such as starch, cellulose, chitin) or agricultural and sideline products through microbial fermentation or synthesis of biodegradable macromolecules, such as thermoplastic starch plastics, aliphatics Polyester, polylactic acid, starch/polyvinyl alcohol, etc. are all such plastics.
The plastics industry is a big industry. In 2003, the national output of plastic products reached 16.5053 million tons, including 811,000 tons of agricultural films, 3.269 million tons of packaging films, 3.12 million tons of tableware, and about 11 million tons of plastic pellets. Around 192 billion yuan per year, the annual profit exceeds 38 billion yuan. With the continuous enhancement of my country's environmental protection awareness and the improvement of environmental protection laws, completely biodegradable plastics will gradually replace ordinary plastic products.