Fabrication of optically transparent chitin nanocomposites
Fabrication of optically transparent chitin nanocomposites
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DOI：
10.1007/s00339-010-5969-5
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发表时间：
2011-02-01
影响因子：
2.7
通讯作者：
Yano, Hiroyuki
中科院分区：
文献类型：
--
作者：
Shams, M. Iftekhar;Ifuku, Shinsuke;Yano, Hiroyuki
采用简单的机械处理方法从蟹壳中制备甲壳素纳米纤维。纳米纤维足够小以保持纯丙烯酸树脂的透明度。具有羟基和胺/N-乙酰基官能团，甲壳素纳米纤维的水悬浮液比纤维素纳米纤维快9倍真空过滤，以制备直径为90 mm的片状物。这是甲壳素纳米纤维在商业应用方面优于纤维素纳米纤维的突出优势。有趣的是，甲壳素丙烯酸树脂膜表现出更高的透明度比纤维素丙烯酸树脂膜，由于亲水性较低的甲壳素和疏水性树脂之间的密切亲和力。此外，甲壳素纳米纤维的掺入有助于显着改善纯丙烯酸树脂的热膨胀和机械性能。高透光率和低热膨胀的特性使得甲壳素纳米复合材料在连续卷对卷工艺中成为各种光电器件（如平板显示器、可弯曲显示器和太阳能电池）制造中的基板的有希望的候选者。
This paper demonstrates the preparation of chitin nanofibers from crab shells using a simple mechanical treatment. The nanofibers are small enough to retain the transparency of neat acrylic resin. Possessing hydroxyl and amine/N-acetyl functionalities, water suspension of chitin nanofibers was vacuum-filtered 9 times faster than cellulose nanofibers to prepare a nanofiber sheet of 90 mm in diameter. This is a prominent advantage of chitin nanofibers over cellulose nanofibers in terms of commercial application. Interestingly, chitin acrylic resin films exhibited much higher transparency than cellulose acrylic resin films owing to the close affinity between less hydrophilic chitin and hydrophobic resin. Furthermore, the incorporation of chitin nanofibers contributes to the significant improvement of the thermal expansion and mechanical properties of the neat acrylic resin. The properties of high light transmittance and low thermal expansion make chitin nanocomposites promising candidates for the substrate in a continuous roll-to-roll process in the manufacturing of various optoelectronic devices such as flat panel displays, bendable displays, and solar cells.