Biodegradable plastic bags are currently a product that has been promoted to the public's attention after the national plastic ban. Compared to the original ordinary plastic bags, what are the advantages of biodegradable plastic bags?
In human history, plastic bags have been too convenient and easy to use, leading to people's daily life has been inseparable from plastic bags. The convenience and quickness of plastic bags have led people to forget that the original intention of the invention of plastic bags was not to use disposable items, and they are often discarded after using them once. Many people do not know that the main raw material for producing plastic bags is polyethylene, which is very difficult to degrade. A large number of discarded plastic bags are buried underground, leading to a large area of land being occupied for a long time due to burying plastic bags, which is known as "white pollution". When people replace the plastic bags they use with biodegradable plastic bags, this problem is easily solved. Compared to the original polyethylene plastic bags, the degradation is very difficult, and the biodegradable plastic bags can be fully degraded in only a few months, which greatly alleviates the waste of land resources.
As our lives become more degradable, plastic bags in supermarkets have also been transformed from PE bags of two or three cents to PBAT biodegradable bags of one dollar, and straw materials have been converted from PP to PLA materials. However, compared to traditional plastics, biodegradable materials have significant disadvantages due to their high brittleness and poor impact resistance. So what methods are used for toughening and modifying degradable plastics? Some toughening agents can be added for modification. Degradable toughening agents can be thermoplastic together with the material. After thermoplastic, their molecular chains can fully combine with the plastic material and increase adhesion, increasing the color retention and oxidation resistance, toughness, tensile strength, elasticity, and tensile strength of the product. After molding, it can have (effective) prevention of product cracking and deformation, and improve the impact resistance of the product, with very significant effects.