Villares Ana, Moreau Céline, Capron Isabelle, Cathala Bernard
UR1268 Biopolymères Interactions Assemblages, INRA, F-44316 Nantes, France.
Biomacromolecules. 2014 Jan 13;15(1):188-94. doi: 10.1021/bm401474c. Epub 2013 Dec 19.
For the first time, the adsorption of xyloglucan (XG) on chitin nanocrystals (ChiNC) surface was proved using quartz crystal microbalance with dissipation (QCM-D) and by successfully building up spin-coated assisted layer-by-layer (LbL) structures on solid substrates. Several parameters in the adsorption process, such as ChiNC concentrations (0.5-3.0 g L(-1)), number of layers, or the outmost layer material (ChiNC or XG), were investigated to better understand the fabrication process of multilayer films. The thickness of the homogeneous film increased linearly with the number of bilayers, with an average thickness per bilayer of 12.3 nm. Additionally surface morphology was studied by atomic force microscopy (AFM), which revealed an almost completely covered surface after the adsorption of ChiNC. The final structures were found to have semireflective properties capable of being tuned by adjusting the ChiNC dispersion parameters.
首次通过石英晶体微天平耗散技术（QCM-D）并在固体基板上成功构建旋涂辅助逐层（LbL）结构，证明了木葡聚糖（XG）在几丁质纳米晶体（ChiNC）表面的吸附。研究了吸附过程中的几个参数，如ChiNC浓度（0.5 - 3.0 g L(-1)）、层数或最外层材料（ChiNC或XG），以更好地理解多层膜的制备过程。均匀膜的厚度随双层数线性增加，每层双层的平均厚度为12.3 nm。此外，通过原子力显微镜（AFM）研究了表面形态，结果表明ChiNC吸附后表面几乎完全被覆盖。发现最终结构具有半反射特性，可通过调整ChiNC分散参数进行调节。
