Worldchamp factory talks about the degradation of biodegradable plastic gloves
Plastic gloves are important organic synthetic polymer materials with a wide range of applications. Since their introduction in the 20th century, they have been used in a wide range of industries and have greatly enriched everyone's lives. However, waste plastics are difficult to decompose in nature. Complete decomposition may take more than ten years, or even hundreds of years, which has had a serious impact on people's living environment. Therefore, biodegradable plastic gloves are becoming more and more important, and the issue of degradation and reuse is now before the eyes of all environmental chemists today.
Biodegradable plastic gloves are produced by adding a quantitative amount of additives (such as starch, modified starch or other cellulose, photosensitizers, biodegraders, etc.) to make their performance meet the requirements of use and their performance does not have a shelf life. After application, the plastics can be degraded to environmentally benign substances under ecological conditions. Therefore, they are also known as environmentally degradable plastic gloves.
Classification of biodegradable plastic gloves.
Photodegradable plastic:A photosensitizer is added to the glove to slowly decompose the plastic in the presence of sunlight. It is an older type of degradable plastic. Its disadvantage is that the degradation time is unpredictable due to sunlight and climate change, so the degradation time cannot be controlled.
Biodegradable plastics: Plastics that can be completely decomposed into low molecular compounds under the action of microorganisms. It is characterized by easy storage and transportation, only needs to be kept dry, no shading, and has a wide range of applications. It can be used not only as agricultural land film and packaging bags, but also widely used in biomedical industry.
Lightweight/biodegradable plastic: A plastic that combines photodegradation and microbial degradation. It has the properties of photo- and microbially degradable plastics.
Water-degradable plastic: Water-absorbent material is added to the plastic, which can be dissolved in water after use. Specially used for medical and hygienic products (such as medical gloves), easy to clean and disinfect.
Degradation principle of degradable plastics
The production process of degradable plastic is resin photosensitizer, photodegradation regulator or resin biodegradation material, photosensitizer, other
The principle of photodegraders is that photodegraders are organic compounds that are connected to metal elements and have double bonds. They form photochemical changes in sunlight, forming free radical compounds that transfer to hydrogen on polymer molecules, causing molecular chain breakage, which in turn completes the degradation of the polymer.
When polymers are exposed to environmental conditions such as oxygen, water, radiation, chemicals, pollutants, mechanical forces, insects and other organisms and microorganisms, the degradation link of polymer chain breakage is called environmental degradation. Degradation reduces the molecular weight of the polymer and the physical properties of the polymeric material until the polymeric material lacks suitability. This condition is also known as aging degradation of polymeric materials.
Aging degradation of polymers is directly related to the stability of the polymer. Aging and degradation of polymers shorten the life of the plastic. Therefore, since the introduction of plastics, scientists have focused on the aging resistance, i.e., stability, of such materials to create highly stable polymers, and scientists in various countries are taking advantage of the aging degradation behavior of polymers . Scientists from different countries are also competing to develop environmentally degradable plastics.
The development trend of degradable plastic gloves
according to different uses and environmental conditions, further deepen the research, through molecular design research, improve the formula, and develop punctual and controllable environmental degradable plastics has become a key research topic in many countries.
Actively develop high-efficiency and low-cost photosensitizers, oxidizers, bio-inducing agents, degradation promoters, stabilizers, etc., to further improve on-time controllability, rapid degradability and complete degradability after use.
Accelerate the development of biodegradable plastics or ordinary plastics, starch, cellulose or inorganic materials filling and blending or alloying technology, as well as completely biodegradable plastics and natural materials coating and compounding technology are hot spots.
Hydrolyzable plastics and edible plastics have received worldwide attention for their special functions and uses, and become another hot spot for environmental protection materials.