固体壳聚糖的长期辐射诱导效应

IF 0.8 Q4 MATERIALS SCIENCE, BIOMATERIALS

Progress on Chemistry and Application of Chitin and its Derivatives Pub Date : 2021-09-30 DOI:10.15259/pcacd.26.007

U. Gryczka

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引用次数: 0

摘要

用电离辐射处理壳聚糖是将其改性用于各种应用的方法之一。然而，在固态辐照的壳聚糖的情况下，辐照过程中形成的自由基可以稳定在其结晶相中，随后引起辐照后的变化。已经观察到，在辐照聚合物的储存过程中，聚合物发生进一步降解，导致氧化产物增加和脱乙酰度降低。这种效应是由于自由基的转化导致稳定的硝基氧自由基的形成，这一过程在辐照数年后观察到。

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LONG-TERM RADIATION-INDUCED EFFECTS ON SOLID STATE CHITOSAN

Treatment of chitosan with ionising radiation is one of the methods by which it is modified for various applications. However, in the case of chitosan irradiated in the solid state, the radicals formed during irradiation can be stabilised in its crystalline phase and subsequently cause post-irradiation changes. It has been observed that further degradation of the polymer occurs during storage of the irradiated polymer, resulting in an increase in oxidation products and a decrease in deacetylation degree. This effect results from the transformation of radicals leading to the formation of stable nitroxyl radicals, a process observed years after irradiation.

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来源期刊

Progress on Chemistry and Application of Chitin and its Derivatives MATERIALS SCIENCE, BIOMATERIALS-

CiteScore

1.10

自引率

16.70%

发文量

期刊介绍： Progress in the Chemistry and Application of Chitin and its Derivatives is an annual journal focused on all aspects of production, modification, enzymology and application of chitin and its many derivatives, including chitosan. The journal publishes full-length papers as well as invited reviews. To be considered, papers must present original research that has not been published or accepted for publication elsewhere. The language of the journal will be English.