Self-peeling-off in the drying of particulate films mixed with cellulose nanofibres
Self-peeling-off in the drying of particulate films mixed with cellulose nanofibres
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DOI：
10.1049/mnl.2017.0100
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发表时间：
2017-08-01
影响因子：
1.3
通讯作者：
Matsuda, Yu
中科院分区：
文献类型：
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作者：
Ooi, Yuto;Hanasaki, Itsuo;Matsuda, Yu
纤维素纳米纤维（CNF）的工业应用包括添加到从显示器和化妆品到颜料墨水的各种材料中。这些预期的应用中的许多是基于胶体颗粒和CNF在水性分散体中的混合物。特别地，通常以这样的方式处理混合分散体，使得液滴或浅宽体积的分散体在基底或容器上干燥。本研究针对这些潜在应用所共有的基本物理性质，通过在聚苯乙烯孔板中干燥水分散液，在不同浓度组合条件下制备了由聚苯乙烯颗粒和CNFs组成的胶体膜。已经发现，由较高浓度的CNF制成的膜在干燥过程中倾向于自发剥离。这种现象的基本机理是由于CNF在干燥过程中通过长丝之间的氢键作用而收缩。
Industrial applications of cellulose nanofibres (CNFs) include the additive to a wide range of materials from display and cosmetic to pigment inks. Many of these expected applications are based on the mixture of colloidal particles and CNFs in aqueous dispersion. In particular, the mixed dispersion is typically processed in such a way that the droplet or shallow wide volume of dispersion is dried on the substrate or container. In this work, the basic physical properties that these diverse kinds of potential applications share in common are focused on. The colloidal films were fabricated consisting of polystyrene particles and CNFs under the condition of various concentration combinations through the drying of aqueous dispersion in polystyrene well plates. It has been found that the films fabricated from higher concentrations of CNF tend to peel-off spontaneously in the drying process. The basic mechanism of phenomenon is attributed to the contraction of CNFs during the drying by hydrogen bonding between the filaments.