来源网址：湖北快3走开奖结果http://www.rsoau.com 2019-03-01 13:50:27
Development Prospect of High Amylose Corn
White pollution has brought incalculable losses to human living environment, which has attracted great attention of the whole society and even the whole mankind to environmental protection. Facing the increasingly drying up of petroleum resources, biodegradable materials in line with the trend as high-tech environmental protection products are becoming a research and development hotspot. To enter the market, degradable plastics must meet the following requirements:
(1) practicability, with similar application function to general plastics of the same kind;
(2) Degradability, which can be degraded quickly in the natural environment after the use of the function, becomes debris easily absorbed by the environment, and eventually returns to nature;
(3) Safety, no harm or potential damage to the natural environment from the degradation process and residues after degradation;
(4) Economy, price is close to or equal to that of similar plastics.
But the price of biodegradable plastics is too high. The price of biodegradable plastics is more than 50% higher than that of the current plastics products of the same kind. During this period, the price of biodegradable plastics is 4 to 8 times higher than that of the current plastics products, which becomes the biggest obstacle to its popularization and application. In order to reduce the cost and ensure the degradation function of the products, starch biodegradable plastics have become a popular product in China.
Starch is one of the most widely used natural polysaccharides which can be completely biodegraded. It has many advantages, such as wide material history, low price and easy biodegradability. It occupies an important position in the field of biodegradable materials.
The mechanical functions of various trademark starch plastics published at home and abroad can generally be compared with the traditional plastics used in the same kind of applications, but their use functions are often not perfect. One of the main defects of starch-containing degradable plastics is that their water resistance is not good, their wet strength is poor, and their mechanical functions are severely reduced in case of hydration. Water resistance is just the strength of traditional plastics in the use process.
High amylose starch has better water resistance, shear resistance and film forming properties than common starch, so it has great potential in the development of plastic industry.
The above information is our maize starch granule finishing and publishing hope to help you with our website is: http://www.rsoau.com!