New improved formula, filling ratio can reach 90%. In terms of degradation rate, the film made with 50% of OSEP101-3A passed the test of ASTM D5338 “Aerobic Biodegradation Test Standard for Plastic Materials under Controlled Composting Conditions”. After 180 days, the film decomposition rate reached 33.9%. At the same time, the improvement of OSEP101 formula has increased the physical properties and toughness of the product.
Environmentally-friendly 100% biodegradable masterbatch additives made from nano-grade oyster powder, PE, LLDPE, natural plant-based raw materials, and exclusive bio-degradable formula with special processing and refining technologies, targeting 4P (PE, PP, PS, PVC) plastic materials.
The product developed by adding 15% ~ 30% (max. to 50%) of OSEP101-5A mixed chain has reached the ASTMD6954-04(SPCR-141) test standard (for exposure and testing of plastics that degrade in the environment through a combination of “Oxidative degradation and Bio-degradation”).
Test and evaluation methods for oxidized biodegradable plastics
- Polymer oxidative degradation evaluation (measurement of molecular weight reduction and physical changes).
- Determination of the biodegradability of the polymer after polyoxidative degradation (biodegradability test).
- Determination of the impact of soil residues on the environment after biodegradation (environmental toxicity).
Oxidized biodegradable plastics, according to the report of the Swedish SP Technology Research Institute, the test results meet all the test standards of ASTM D6954, especially in the bio-degradation test (Method B), in the buried test (23 degrees C) The biodegradability has reached more than 90%.
ASTM SP 6954-04 (EU SPCR 141)
Standard guide for exposing and testing plastics that degrade in the environment by a combination of oxidation and bio-degradation.
ASTM JIS K6955-2006
Determination of the ultimate aerobic biodegradability in soil by measuring the oxygen demand in a respirometer or the amount of carbon dioxide evolved.
ASTM JIS K6953-2000
Determination of the ultimate aerobic biodegradability and disintegration of plastic materials under controlled composting conditions–Method by analysis of evolved carbon dioxide.