Application of starch-based biodegradable plastics in packaging materials

company-news | Time:2023-01-16

China is a big country in packaging manufacturing. Plastic packaging accounts for nearly one-third of the total packaging output value. Traditional plastics are widely used in all aspects of life because of their excellent performance. Traditional plastics are difficult to degrade after being discarded, which makes the situation of white garbage even more severe. If these plastic products are landfilled, they will seriously pollute the soil and affect the growth of crops; if they are incinerated, the gas produced will pollute the atmosphere and the environment; if they are recycled, they will be affected by weathering and natural wear and tear, which will affect their secondary use performance. Therefore, researchers once again set the research direction on recyclable, environmentally friendly, and degradable materials. The thermoplastic starch prepared by blending natural starch and plasticizer has better properties, among them, the blend of polylactic acid and thermoplastic starch is called the most promising new packaging material in the 21st century.

Due to the long time in the transportation process of fruit and vegetable packaging materials, the shelf life of fruits and vegetables is short, so it is necessary to use plastic wrap to extend the storage period. Researchers have found that starch-based plastic cling film has a good fresh-keeping function. Yang Yue et al. applied cassava starch cling film liquid on the surface of oranges to form a thin layer of colorless cling film, thereby prolonging the storage period of oranges. With the continuous research and improvement of degradable plastics, its performance in all aspects will be continuously enhanced, gradually replacing traditional plastics.

In terms of disposable tableware, due to the large population of our country and the huge total food consumption, the environmental pollution caused by non-degradable materials used in food packaging is very serious. In recent years, "Internet +" is subtly changing people's lifestyles, consumption patterns and behavioral habits. Online food delivery is favored by office workers and students for its benefits and convenience. The "lazy economy" and "fast-paced life" have promoted the rapid development of Internet food delivery. People enjoy delicious food from all over the world, but the amount of garbage generated by each takeaway is several times higher. For example, any single takeaway may include disposable plastic lunch boxes, plastic meal lids, food bags, plastic spoons, and beverages. The amount of waste such as cups is even more astonishing. Moreover, plastics are petroleum-based products, and fluctuations in petroleum prices also cause instability in the prices of plastic products, while the use of degradable materials can largely alleviate the demand for plastic products and environmental pressure.

Henan Techuang Biotechnology Co., Ltd. is a modern green and environmental protection enterprise integrating R&D, production, sales and technical services, providing services for biodegradable plastic bags and products. For more information, please visit the official website of Baydeebio: www.baydeebio.com

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