Super-hydrophobic modification of porous natural polymer “luffa sponge” for oil absorption
Super-hydrophobic modification of porous natural polymer “luffa sponge” for oil absorption
复制标题
DOI：
10.1016/j.polymer.2017.05.068
复制
发表时间：
2017-09
期刊：
影响因子：
4.6
通讯作者：
Zhe Wang;Hongyang Ma;B. Chu;B. Hsiao
中科院分区：
文献类型：
--
作者：
Zhe Wang;Hongyang Ma;B. Chu;B. Hsiao
采用多面体低聚倍半硅氧烷（POSS）改性天然丝瓜络海绵，制备了一种适用于溢油清理的超疏水多孔材料。通过表面粗糙化和POSS涂层的简单处理，初始亲水性丝瓜络海绵转变为具有155°水接触角的超疏水性丝瓜络海绵。改性丝瓜络海绵对各种油脂的吸附能力可达自身重量的8 ~ 12倍，并可多次循环使用。考察了油的粘度和海绵孔径对吸附容量的影响;其中吸附选择性测试表明，改性丝瓜络海绵在吸附过程中基本上可以吸收油的所有组分。
A super-hydrophobic porous material with high absorption capability, suitable for oil spill cleanup, was demonstrated using a natural luffa sponge modified by a polyhedral oligomeric silsesquioxane (POSS)-based compound. Through facile treatments of surface roughing and POSS coating, the initial hydrophilic luffa sponge was transformed to super-hydrophobic having a water contact angle of 155°. The modified luffa sponge could absorb 8 to 12 times of its weight for different types of oils and could be recycled for many times in use. The effects of oil viscosity and sponge pore size on the absorption capacity were investigated; where the absorption selectivity tests revealed that the modified luffa sponge could essentially take up all the components of the oil during the absorption process.