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Highly Flexible Superhydrophobic and Fire-Resistant Layered Inorganic Paper
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posted on 2016-12-06, 17:20 authored by Fei-Fei Chen, Ying-Jie Zhu, Zhi-Chao Xiong, Tuan-Wei Sun, Yue-Qin ShenTraditional
paper made from plant cellulose fibers is easily destroyed by either
liquid or fire. In addition, the paper making industry consumes a
large amount of natural trees and thus causes serious environmental
problems including excessive deforestation and pollution. In consideration
of the intrinsic flammability of organics and minimizing the effects
on the environment and creatures, biocompatible ultralong hydroxyapatite
nanowires are an ideal building material for inorganic fire-resistant
paper. Herein, a new kind of free-standing, highly flexible, superhydrophobic,
and fire-resistant layered inorganic paper has been successfully prepared
using ultralong hydroxyapatite nanowires as building blocks after
the surface modification with sodium oleate. During the vacuum filtration,
ultralong hydroxyapatite nanowires assemble into self-roughened setalike
microfibers, avoiding the tedious fabrication process to construct
the hierarchical structure; the self-roughened microfibers further
form the inorganic paper with a nacrelike layered structure. We have
demonstrated that the layered structure can significantly improve
the resistance to mechanical destruction of the as-prepared superhydrophobic
paper. The as-prepared superhydrophobic and fire-resistant inorganic
paper shows excellent nonflammability, liquid repellency to various
commercial drinks, high thermal stability, and self-cleaning property.
Moreover, we have explored the potential applications of the superhydrophobic
and fire-resistant inorganic paper as a highly effective adsorbent
for oil/water separation, fire-shielding protector, and writing paper.
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fire-shielding protectorbuilding blockssodium oleatefabrication processas-prepared superhydrophobic paperFire-Resistant Layeredself-roughened microfibersas-prepared superhydrophobicultralong hydroxyapatite nanowiresbiocompatible ultralong hydroxyapatite nanowiresbuilding materialself-cleaning propertysurface modificationvacuum filtrationplant cellulose fibersFlexible Superhydrophobicself-roughened setalike microfibers
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