Starch-based plastic development status, product advantages
Starch-based plastic development status
Starch-based bioplastics has a history of 30 years of research and development. It is a biodegradable plastic with the longest research history, the most mature technology, the largest industrial scale and the highest market share. In the early 1980s, research and development of modified starch and degradable plastic alloy masterbatch of fully biodegradable or soluble plastics, the blending of starch and biodegradable resin was valued. Among them, the most successful is the “MaterBi” of Novamont, Italy, which is an interpenetrating network structure polymer plastic alloy composed of modified starch and modified polyvinyl alcohol. It has good processing properties, secondary processing properties and mechanics. Performance and excellent biodegradability. In addition, "Vinex" developed by Air Product & Chemical Company of the United States is a resin based on polyvinyl alcohol having a low degree of polymerization, and has water solubility, thermoplastic processability and biodegradability, and has received great attention in recent years.
In recent years, countries have generally shifted their research focus to plastics that increase starch content as much as possible, and have developed some fully degradable materials with excellent properties, and even obtained pure starch products without synthetic polymers, namely thermoplastic starch. The "Novon" biodegradable material produced by Warner-Lambert in the United States has a starch content of over 90%. The Japanese Corn Company and the Michigan Institute of Production Technology have jointly developed a high-starch material that has the advantage of high water resistance. In addition, Sumitomo Corporation of Japan and Ferrizz of Italy also announced that they have successfully studied all-starch plastics with a starch content of 90%. In the production of thermoplastic starch for the production of biodegradable plastics, research institutes such as the German Batekke Institute, the American Warner-Lambert Company and the Swiss University have made great progress. The Australian National Center for Food Processing and Packaging Science has introduced a full-starch thermoplastic with good fluidity, ductility and mold release. The product is soft, transparent, high-strength, and has a controllable degradation rate. It can be used to make agricultural film and food. Packaging film and other products.
China's starch plastics was first developed by the Institute of Applied Chemistry of the Jiangxi Academy of Sciences in the late 1980s. According to incomplete statistics, there are more than 60 institutions of higher learning, research institutes and enterprises participating in the research. China is developing large-scale equipment in the research and development of starch-based plastics.
The starch is modified and plasticized by chemical methods, and the modified starch has three major characteristics: 1. Hydrophobicity. Starch is completely hydrophobic after chemical modification, and its moisture content is <1%, which has good compatibility with other synthetic polymer materials. 2, temperature resistance. The modified starch can withstand a high temperature of 230 ° C during the thermoplastic processing without yellowing or decomposition. 3. Thermoplastic. The modified starch can be thermoplastically processed on plastic processing equipment. The starch-based plastics produced by the company are divided into two series: bio-based and bio-degradable. They are divided into blown film materials, injection plastics, sheet materials and foaming materials according to different processing techniques. They can be used in industrial and pharmaceutical applications instead of ordinary petrochemical plastics. Packaging of food, electrical appliances and other products, kitchen utensils, toys and flower planting. Thereby, a large amount of oil resources are saved, carbon dioxide emissions are reduced, garbage is harmlessly treated, and agricultural development and farmers' income are promoted, and the development of circular economy is promoted.
Starch-based plastic Product advantages
Compared with traditional plastic products, the advantages of starch-based materials and products are as follows:
(1) Similar performance: It has the same and similar performance as traditional plastic products of the same type;
(2) Environmental protection: starch-based bio-based plastics and products have the advantages of saving petroleum resources and reducing carbon dioxide emissions; starch-based biodegradable plastics and products have the advantages of complete biodegradation, compostability and harmless disposal of garbage;
(3) Safety: Starch-based materials and products do not contain toxic and harmful substances such as plasticizers, bisphenol A and heavy metals. Food grade materials meet the relevant standards for food grade plastics at home and abroad;
(4) Production process: There is no waste discharge in the production process, which will not cause new pollution to the environment;
(5) Cost: Starch-based bio-based plastic materials and products are the same as ordinary petroleum plastic products. The cost of starch-based biodegradable materials and products is about twice that of ordinary petroleum plastics.
we offer patented full biodegradable film and PVA bag, all products are made by casting equipment, It is different from traditional blow molding products, all blow molding products are non full biodegradable. We can produce pva films and bags in all transparent and various colors.
we also offer organic material full biodegradable film and bags with patented raw material and production Process. our corn based starch-based plastic and bamboo based starch-based plastic get Vincotte OK Biobased certificate.
For more PVA film and bags products please visit us:
http://www.joyful-printing.net/pva-bag/
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