Graduate School of Engineering , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka 819-0395 , Japan.
Institute for Materials Chemistry and Engineering , Kyushu University , 744 Motooka, Nishi-ku , Fukuoka 819-0395 , Japan.
Langmuir. 2020 Feb 25;36(7):1718-1726. doi: 10.1021/acs.langmuir.9b03626. Epub 2020 Feb 16.
A free-standing (biomacomolecule/synthetic inorganic nanotubes) hybrid film was fabricated through an alternative layer-by-layer (LBL) assembly of sacran and imogolite nanotubes. Sacran is a natural polysaccharide extracted from the cyanobacterium , while imogolite is a natural tubular aluminosilicate clay found in volcano ash. The hybrid film thickness increased linearly with the number of the bilayers, because of the interaction between the negatively charged surface of sacran and the positively charged surface of imogolite. UV-vis spectroscopy indicated that the LBL film exhibited good transparency. The surface morphology of the LBL film was smooth in the micrometer scale; many imogolite nanotubes were adsorbed onto the sacran layer, while no imogolite clusters were observed. Furthermore, the structure, stability, gas permeability, and mechanical properties of the LBL films were investigated.
通过交替层层组装壳聚糖和埃洛石纳米管，制备了一种独立式（生物大分子/合成无机纳米管）杂化膜。壳聚糖是从蓝细菌中提取的天然多糖，而埃洛石是一种天然管状铝硅酸盐粘土，存在于火山灰中。由于壳聚糖带负电荷的表面和埃洛石带正电荷的表面之间的相互作用，杂化膜的厚度随双层的数量线性增加。紫外可见光谱表明，LBL 膜具有良好的透明度。LBL 膜的表面形貌在微米尺度上是光滑的；许多埃洛石纳米管被吸附到壳聚糖层上，而没有观察到埃洛石簇。此外，还研究了 LBL 膜的结构、稳定性、气体渗透性和力学性能。
