One-step nanocellulose coating converts tissue paper into an efficient separation membrane
One-step nanocellulose coating converts tissue paper into an efficient separation membrane
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DOI：
10.1007/s10570-018-1945-6
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发表时间：
2018-09-01
期刊：
影响因子：
5.7
通讯作者：
Kim, Jaehwan
中科院分区：
文献类型：
--
作者：
Roy, Sunanda;Zhai, Lindong;Kim, Jaehwan
本文报道了一种新型超疏水材料的涂层技术，该技术可以将纸巾纸(TP)转化为高效的分离膜，这种材料是通过一步法快速合成的，不使用任何危险化学品，即氟化材料或有机/无机纳米颗粒。涂层是用改性的纤维素纳米纤维制备的，这种纤维可以很容易地将TP转化为优良的油/水分离膜，以及喷雾涂层后的高效染料吸着剂。合成的超疏水纤维素表面的水接触角为161度(+/-3度)，而包覆的TP表面为144A度(+/-3度)。然而，涂覆的茶多酚对各种油/水混合物表现出优异的分离性能。此外，包覆的茶多酚在10min内也表现出良好的从水溶液中吸附染料的能力。为了进一步探索涂层材料的多功能作用，当将其喷洒在洗碗机海绵上时，海绵成为一种超级吸油材料，能够以令人难以置信的速度从水中分离各种油。因此，我们相信，我们的生态多功能超疏水涂层材料可以成为许多先进应用的新的有前途的选择，以创造更可持续的地球。
This article reports robust technology for converting tissue paper (TP) into an efficient separation membrane by coating with a novel superhydrophobic material that was synthesized by a rapid, one step approach without using any hazardous chemicals viz fluorinated materials or organic/inorganic nanoparticles. The coating was prepared using modified cellulose nanofibers which can readily transform a TP into an excellent oil/water separation membrane as well as a highly efficient dye absorbent upon spray coating. While the as-synthesized superhydrophobic cellulose surface shows water contact angle 161 degrees (+/- 3 degrees), the coated TP displays 144A degrees (+/- 3 degrees). Nevertheless, the coated TP shows outstanding separation performances towards various oil/water mixtures. Besides that, the coated TP also shows excellent dye absorption capacity from aqueous solution within 10 min. To further explore the multifunctional roles of the coating material, when spray it on a dishwasher sponge, the sponge became a super oil absorbent material and able to separate various oils from water at unbelievably faster rate. Hence, we believe that our ecofriendly versatile superhydrophobic coating material can be a new promising choice for many advanced applications to create more sustainable earth.