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Complex study on chitosan degradability

机译：壳聚糖降解性的复杂研究

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Results of photo-and thermodegradation of chitosan of different degrees of deacetylation (DD), were discussed. On the basis of the results of thermodegradation under isothermal and dynamic conditions thermal stability of chitosan films, also photochemically modified samples (UV irradiated for 1h), was estimated. Investigations under isothermal conditions were carried out in the air atmosphere and cover the temperature range from 100 deg C to 200 deg C. Basing on the results of weight loss it was found that most susceptible to degradation was the sample of the higher DD; with an increase of temperature the observed changes were more distinct. Both during thermo- and photodegradation a decrease of DD of chitosan was observed. Modification of chitosan films by UV irradiation decreases the characteristic parameters of thermodestruction.
机译：讨论了不同脱乙酰度（DD）的壳聚糖的光降解和热降解的结果。根据在等温和动态条件下热降解的结果，还评估了壳聚糖膜的热稳定性，还估算了光化学改性的样品（紫外线照射1h）。在空气中等温条件下进行研究，温度范围为100℃至200℃。基于失重的结果，发现最容易降解的是较高DD的样品。随着温度的升高，观察到的变化更加明显。在热降解和光降解过程中，均观察到壳聚糖的DD降低。通过紫外线辐照改性壳聚糖膜降低了热破坏的特征参数。

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