三氯氧磷交联淀粉的生物降解性能研究

Study on Biodegradability of Tapioca Starch Cross-linked With Phosphorus Oxychloride

利用微生物群在半生物体内模型中系统研究了三氯氧磷交联淀粉的生物降解性能。结果表明,淀粉经三氯氧磷交联化后,其微生物降解的速度和程度随交联度的提高而降低。低程度的交联可促进淀粉的微生物降解速度和程度,而高交联对淀粉的微生物降解却起到抑制作用。通过控制三氯氧磷交联淀粉的交联度可以调解淀粉的微生物降解速度和降解程度。

The biodegradability of tapioca starch cross linked with phosphorus oxychloride was studied according to the half-vivo model by using micropopulation symbiotic cocultures.The results indicated that the biodegradation rate and degree were slowed down as the degree of cross linking increased.For the samples of a low cross-linked degree,the biodegradation rate sped up and the biodegradation percentage increased as well.When the degree of cross linking was high,starch biodegradation was very difficult.The biodegradability of starch could be regulated by controlling the cross linking degree.