Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Preparation of fluorine-free superhydrophobic and wear-resistant cotton fabric with a UV curing reaction for self-cleaning and oil/water separation
RSC Advances ( IF 3.9 ) Pub Date : 2021-1-22 , DOI: 10.1039/d0ra10060a Yaofa Luo 1 , Shuang Wang 1 , Xihan Fu 1 , Xiaosheng Du 1, 2 , Haibo Wang 1, 2 , Xu Cheng 1, 2 , Zongliang Du 1, 2
RSC Advances ( IF 3.9 ) Pub Date : 2021-1-22 , DOI: 10.1039/d0ra10060a Yaofa Luo 1 , Shuang Wang 1 , Xihan Fu 1 , Xiaosheng Du 1, 2 , Haibo Wang 1, 2 , Xu Cheng 1, 2 , Zongliang Du 1, 2
Affiliation
|
A durable superhydrophobic, self-cleaning cotton fabric prepared with UV curing was prepared by a simple method and used for oil/water separation. Firstly, sulfhydryl silica nanoparticles on the fabric surface were prepared by the Stöber reaction (SiO2–SH@cotton). Then, the side chain hydroxyl terminated PDMS was reacted with isocyanate to form an isocyanate terminated prepolymer. The prepolymer terminated by HEMA (vinyl-terminated PDMS (PIH)) was sprayed on the fabric surface, and then the superhydrophobic coating (SiO2–S–PIH@cotton) was formed using UV curing. A series of characterization methods were used to demonstrate the properties of the modified cotton fabric. When the weight gain after PIH spraying was 1.8 wt%, the fabric reaches an optimal state (water contact angle (WCA) of 153° and a sliding angle of 7°). When used in an oil–water separation test, the highest separation efficiency reached 99.1%. In particular, the as-prepared fabric has excellent wear resistance. Compared with that before spraying, the superhydrophobicity of the as-prepared fabric has no obvious decrease after 300 cycles under 200 g of weight or after 100 cycles under 500 g of circular friction. This indicated that surface sprayed polymers have two functions: providing low surface tension and protecting the rough surface formed by silica particles. This process was time-saving, energy-saving, protected the environment, had a low material cost and a strong performance stability. It is hoped that this fabric can be used in the large-scale industrialization of oil–water separation.
中文翻译：
紫外光固化反应制备自清洁油水分离无氟超疏水耐磨棉织物
通过简单的方法制备了一种耐用的超疏水、自清洁的紫外线固化棉织物，并用于油水分离。首先，通过Stöber反应（SiO 2 -SH@cotton）在织物表面制备巯基二氧化硅纳米粒子。然后，侧链羟基封端的PDMS与异氰酸酯反应形成异氰酸酯封端的预聚物。将HEMA封端的预聚物（vinyl-terminated PDMS (PIH)）喷涂在织物表面，然后涂上超疏水涂层（SiO 2–S–PIH@cotton) 是使用 UV 固化形成的。一系列表征方法被用来证明改性棉织物的性能。当PIH喷涂后的增重为1.8 wt%时，织物达到最佳状态（水接触角（WCA）为153°，滑动角为7°）。用于油水分离试验时，最高分离效率达到99.1%。特别是所制备的织物具有优异的耐磨性。与喷涂前相比，所得织物的超疏水性在200 g重量下循环300次后或500 g圆周摩擦下循环100次后均无明显下降。这表明表面喷涂聚合物具有两个功能：提供低表面张力和保护二氧化硅颗粒形成的粗糙表面。这个过程很省时，节能、环保、材料成本低、性能稳定性强。希望这种织物能够用于油水分离的大规模产业化。
更新日期：2021-01-22
中文翻译：
紫外光固化反应制备自清洁油水分离无氟超疏水耐磨棉织物
通过简单的方法制备了一种耐用的超疏水、自清洁的紫外线固化棉织物，并用于油水分离。首先，通过Stöber反应（SiO 2 -SH@cotton）在织物表面制备巯基二氧化硅纳米粒子。然后，侧链羟基封端的PDMS与异氰酸酯反应形成异氰酸酯封端的预聚物。将HEMA封端的预聚物（vinyl-terminated PDMS (PIH)）喷涂在织物表面，然后涂上超疏水涂层（SiO 2–S–PIH@cotton) 是使用 UV 固化形成的。一系列表征方法被用来证明改性棉织物的性能。当PIH喷涂后的增重为1.8 wt%时，织物达到最佳状态（水接触角（WCA）为153°，滑动角为7°）。用于油水分离试验时，最高分离效率达到99.1%。特别是所制备的织物具有优异的耐磨性。与喷涂前相比，所得织物的超疏水性在200 g重量下循环300次后或500 g圆周摩擦下循环100次后均无明显下降。这表明表面喷涂聚合物具有两个功能：提供低表面张力和保护二氧化硅颗粒形成的粗糙表面。这个过程很省时，节能、环保、材料成本低、性能稳定性强。希望这种织物能够用于油水分离的大规模产业化。
京公网安备 11010802027423号