State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; Institute of Paper Science and Technology, Georgia Institute of Technology, Atlanta, GA 30332, USA.
State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
Carbohydr Polym. 2014 Nov 4;112:277-83. doi: 10.1016/j.carbpol.2014.05.062. Epub 2014 Jun 2.
Structured biofoams with aligned porous structures were fabricated from nanosized chitin by employing a directional freeze-casting technique. The effects of the freezing conditions and slurry formulation on nanochitin foam morphology were investigated. The morphology of obtained foams was characterized using scanning electron microscopy (SEM). It was found that the pore structure of the obtained foams was a likewise of the ice crystals formed during the directional freezing. The results indicate that directional freeze-casting protocol can significantly influence the morphological features and microstructures of the obtained biofoams which could have numerous applications, including engineered carriers, scaffolds, filters and specifically as a template for potential multi-layered composites after infusion with a second phase.
采用定向冷冻铸造技术，从纳米甲壳素制备出具有定向多孔结构的结构化生物泡沫。研究了冷冻条件和浆料配方对纳米甲壳素泡沫形态的影响。使用扫描电子显微镜（SEM）对获得的泡沫的形态进行了表征。结果发现，获得的泡沫的孔结构类似于定向冷冻过程中形成的冰晶。结果表明，定向冷冻铸造方案可以显著影响获得的生物泡沫的形态特征和微观结构，这些泡沫可能有许多应用，包括工程载体、支架、过滤器，特别是作为在注入第二相后形成潜在多层复合材料的模板。
