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Industry News

Ban plastic - what should be used instead?

2020-05-15
Accelerate the development of alternative products

"Plastic Restriction" changes to "Prohibited Plastic" and it is also necessary to replace the product in order to achieve a strong replacement.

In fact, the implementation of the "plastic ban" does not prohibit all plastic products, but prohibits the manufacture, sale, and use of non-degradable plastic bags and plastic dishes. This requires accelerating the development, production and supply of alternative products to meet market demand.

To this end, the "proposal" suggests that Hainan set up a demonstration base for the entire biodegradable plastics industry, organize the formulation of plans for industrial development, introduce progressive companies and work with local companies, as well as a unique production capacity for fully biodegradable plastic products the island will form.

In view of the "green, environmentally friendly and renewable" properties of biodegradable materials, scientists from different countries are working intensively on the development of new types of biodegradable materials.

It goes without saying that the latest domestic research results on biodegradable materials are: wood-like composites, intelligent seawater-degradable materials, blue water biotechnology, spider silk-like high-strength and high-tenacity, fully degradable biomass / polymer composites. Foreign research results mainly include: PET substitutes made from bio-based furan molecules, biodegradable plastics "sugar carbon dioxide", new milk protein films, etc.

"The development of the biodegradation industry to date, be it raw materials or end products, most of the technical path is mature, but there are still some problems that need to be solved in mass production." China's biodegradability technology innovation strategy Lu Lianfeng, secretary general of the alliance, said that current processing technology, equipment and forms of biodegradable products need to be further researched and improved to meet the properties of biodegradable materials.

In addition, some special additives or auxiliaries that are used in the manufacture and modification of biodegradable raw materials need to be further developed.

Strengthening social publicity
iSuo Chem PLA resin
Proper use of biodegradable materials

Although the use of biodegradable materials is more environmentally friendly than plastics, it ultimately belongs to the category of industrial products. Will it bring new environmental problems?

Lu Lianfeng believes that inappropriate, excessive use and inappropriate treatments will still have some environmental impact.

He suggested that the conditions of degradation should be taken into account in the manufacture and development of biodegradable materials. Polylactic acid (PLA), polybutylene succinate (PBS) and its copolyester (PBAT) and other materials can be converted to carbon dioxide and water within 180 days under industrial composting conditions, but to soil, sea water and other environments. The rate of degradation is relatively slow. Therefore, when using and promoting biodegradable materials, it is necessary to increase social publicity, to make the relevant knowledge about biodegradable materials known and to avoid the one-sided understanding of the public about "degradable".

"In addition, the biodegradable material waste is recovered separately and composted separately in accordance with the composting conditions to ensure that the biodegradable material achieves the greatest possible environmental protection." The "proposal" published by Hainan Province will improve household waste recycling. Using the system as a standalone task highlights the importance of recycling.

Large-scale production of biodegradable materials, the source of raw materials, will take up the currently cultivated land resources. In this regard, Lu Lianfeng suggested that China's corn stocks are relatively high. When biodegradable materials are made with starch as a raw material, the use of corn can reduce the occupied arable land as much as possible and help the country to cut grain sales.
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