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首页> 美国卫生研究院文献>Polymers >The Effect of Cross-Linking with Citric Acid on the Properties of Agar/Fish Gelatin Films
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The Effect of Cross-Linking with Citric Acid on the Properties of Agar/Fish Gelatin Films

机译：柠檬酸交联对琼脂/鱼明胶薄膜性能的影响

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摘要

The aim of this work was to assess the effect of fish gelatin–citric acid nucleophilic substitution and agar–citric acid esterification reactions on the properties of agar/fish gelatin films. Since temperature is an important cross-linking parameter, films were treated at 90 °C and 105 °C and film properties were compared to those of non-cured films. It was observed that temperature favored the aforementioned reactions, which induced physical and morphological changes. In this regard, darker films with a rougher surface were obtained for the films with a higher cross-linking degree. While mechanical properties were slightly modified, the barrier properties were enhanced due to the reactions that occurred. Therefore, these agar/fish gelatin films cross-linked through two different reactions can be considered to be promising materials as active films for different purposes, such as active packaging or pharmaceutical applications.
机译：这项工作的目的是评估鱼明胶-柠檬酸亲核取代和琼脂-柠檬酸酯化反应对琼脂/鱼明胶薄膜性能的影响。由于温度是重要的交联参数，因此在90°C和105°C下对膜进行了处理，并将膜性能与未固化的膜进行了比较。观察到温度有利于前述反应，其引起物理和形态变化。在这方面，对于具有较高交联度的膜，获得了具有较粗糙表面的较黑膜。尽管机械性能略有改变，但由于发生的反应，隔离性能得到了增强。因此，这些通过两个不同反应交联的琼脂/鱼明胶薄膜可被认为是有前途的材料，可作为用于不同目的的活性薄膜，例如活性包装或药物应用。

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