壳聚糖
辐照
光降解
光化学
傅里叶变换红外光谱
材料科学
兴奋剂
光催化
降级(电信)
化学工程
化学
核化学
有机化学
光电子学
催化作用
电信
物理
计算机科学
核物理学
工程类
作者
Dorota Chełminiak-Dudkiewicz,Aleksander Smolarkiewicz-Wyczachowski,Marta Ziegler-Borowska,Halina Kaczmarek
标识
DOI:10.1016/j.jphotobiol.2024.112850
摘要
The effect of UV radiation from three different sources on chitosan (CS) films containing the addition of 10% by weight of cannabis oil was investigated. Cannabis oil (CBD) alone exposed to UV is unstable, but its photostability significantly increases in the chitosan matrix. The course of photochemical reactions, studied by FTIR spectroscopy, is slow and inefficient in chitosan with CBD, even under high-energy UV sources. The research also included chitosan films with CBD cross-linked with dialdehyde starch (DAS). Using AFM microscopy and contact angle measurements, the morphology and surface properties of prepared chitosan films with CBD were investigated, respectively. It was found that CBD embedded in CS is characterized by the best photostability under the influence of an LED emitting long-wave radiation. Using a monochromatic and polychromatic UV lamp (HPK and UV-C) emitting high-energy radiation, gradual degradation accompanied by oxidation was observed, both in the CS chains and in the CBD additive. Additionally, changes in surface properties are observed during UV irradiation. It was concluded that CS protects CBD against photodegradation, and a further improvement in photochemical stability is achieved after system cross-linking with DAS.
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