Tuesday, September 22, 2015

The comparison between PBS and PLA degradable plastic

There are some similar products as PBS, such as PBSA, PBAT and PLA and so on. The elongation at break of PBSA, but distortion temperature is about 65 degree, the film forming property of PBAT is good and normally used in blown film, but its distortion temperature is between 50 degree to 55 degree and price is expansive. Compared with them, products of PBS have better heat resistance and can make with temperature between -30 degree to 100 degree and can resistant boiling water temperature, it has a wider application and more convenient to storage,transport and use in hotter environment, such as sea transportation. Compared with PLA, PBS has better tenacity and thermal endurance than PLA, but PLA has better hardness and transparency. These two kinds of products have their own specialty in mechanical property. But in application area, processability and storage and other aspects. PBS has significant advantages.

Firstly, PBS has higher softening point, has wider application. Its usage temperature range is between -30 to 100 degrees.

Secondly, PBS has excellent processability, it can be processed directly in normal polyolefin processing equipment and suitable to injection molding extrusion and blow molding and other normal and special processing method.

Thirdly PBS can be easy to storage.PBS is typical biodegradable material, it can be degraded by enough germ. So in daily use, it can not be degraded without solid which contain rich germ, natural water.

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