通过可生化量即生化需氧量(BOD)与化学需氧量(COD)的比值对一种已在市场中得到应用的接枝淀粉(ST-T)进行生物降解性评价。测定结果表明ST-T的可生化量的平均值是0.340,是PVA的27-85倍,也比酸解淀粉的可生化量值略高,具有十分优异的生物降解性。
Evaluation of biodegradability is conducted on graft starch(ST-T) that has been applied in the market by testing biodegradability quantity(the ratio of BOD and COD).Result shows that average biodegradability quantity of ST-T is 0.340,27-85 times as that of PVA,and slightly higher than that of acidolysis starch,featured by its extraordinarily excellent biodegradability.