A picture on the molecular level describing the deformation and the following relaxation of κ-carrageenan chains has been proposed based on the three-domain structural model for κ-carrageenan films and on the idea of the modified stress-optical rule. The uniaxial tensile and the relaxation behavior for dry and moist κ-carrageenan films has been examined by using a homemade apparatus available for the simultaneous mechanical and birefringence measurements. It has been suggested that the continuous amorphous phase of κ-carrageenan in the dry film is deformed together with the local glass component, and only the glass component relaxes in the following process. On the other hand, concerning the moist film, the crosslinks of κ-carrageenan aggregates in addition to the continuous phase are movable with deformation, while the following relaxation is attributed only to the unbridged κ-carrageenan chains in the continuous phase.

中文翻译：

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通过应力与双折射的相关性研究κ-角叉菜胶薄膜中水分对其拉伸和松弛行为的影响

基于κ-卡拉胶薄膜的三域结构模型和修正的应力-光学规则的思想，已经提出了描述κ-卡拉胶链的变形和随后弛豫的分子水平的图片。通过使用可用于同时进行机械和双折射测量的自制设备，已经检查了干燥和潮湿 κ-角叉菜胶薄膜的单轴拉伸和松弛行为。有人提出干膜中κ-角叉菜胶的连续非晶相与局部玻璃组分一起变形，在随后的过程中只有玻璃组分松弛。另一方面，关于湿膜，除了连续相之外，κ-角叉菜胶聚集体的交联随着变形而移动，