Is the degradation of plastic a chemical change or a physical change? The obvious answer is chemical change. In the process of extrusion and heating molding of plastic bags and under the influence of various factors in the external environment, chemical changes such as relative molecular weight reduction or macromolecular structure change occur, resulting in reduced or even deterioration of the performance of plastic bags. Call it the degradation of plastic bags.
What are the uses of degradable plastics? First, there are areas where ordinary plastics used to be used, where used or post-consumer plastic products are difficult to collect and cause harm to the environment, such as agricultural mulch films and single-use plastic packaging. In addition, the use of degradable plastics in the fields of replacing other materials with plastics can bring convenience, such as ball nails for golf courses, and wood seedling fixing materials for tropical rain forest afforestation.
What are the specific applications of degradable plastics?
Agriculture, forestry and fishery: plastic film, water-retaining materials, seedling pots, seedbeds, rope nets, slow-release materials for pesticides and fertilizers.
Packaging industry: shopping bags, garbage bags, compost bags, disposable lunch boxes, instant noodle bowls, buffer packaging materials.
Sporting Goods: Golf tacks and tees.
Hygiene products: women’s hygiene products, baby diapers, medical mattresses, disposable haircuts.
Fracture fixation materials for medical materials: thin belts, clips, small sticks for cotton swabs, gloves, drug release materials, as well as surgical sutures and fracture fixation materials, etc.
Plastics have a large degradation effect and are widely used. It is a new field with great development prospects in the future.
Post time: Sep-09-2022
