LIMATB - Equipe Rhéologie, Université de Bretagne Occidentale, 6 avenue Victor Le Gorgeu, CS 93837, 29238 Brest Cedex 3, France.
INRA - UR 1268 Unité Biopolymères, Interactions, Assemblages, Rue de la Géraudière, BP 71627, 44316 Nantes Cedex 3, France.
Carbohydr Polym. 2015 Feb 13;116:117-23. doi: 10.1016/j.carbpol.2014.04.085. Epub 2014 Apr 28.
The influence of the addition of tunicate cellulose nanowhiskers on the structural and rheological properties of an agarose hydrogel matrix has been studied, with the objective to design innovative green material, with good mechanical properties. The cellulose nanowhiskers were characterized using transmission electron microscopy, and their charge surface density was determined by a titration method. Oscillatory shear and stress relaxation tests were performed in order to characterize the rheological properties of the agarose matrix, and of the agarose hydrogels filled by nanowhiskers at volume fractions below 0.2%. The results show a significant reinforcement effect due to the addition of nanowhiskers, and suggest changes in the matrix network structure induced by the cellulose nanoparticles.
研究了添加贻贝纤维素纳米纤维对琼脂糖水凝胶基质的结构和流变性能的影响，旨在设计具有良好机械性能的创新绿色材料。使用透射电子显微镜对纤维素纳米纤维进行了表征，并通过滴定法测定了其比表面积。为了研究琼脂糖基质和纳米纤维填充的琼脂糖水凝胶（体积分数低于 0.2%）的流变性能，进行了振荡剪切和应力松弛测试。结果表明，由于纳米纤维的添加，出现了显著的增强效果，并表明纤维素纳米颗粒引起了基质网络结构的变化。
