Oleophobic interaction mediated slippery organogels with ameliorated mechanical performance and satisfactory fouling-resistance  

作　　者：Liangpeng Zeng Hongyuan Cui Huilan Peng Xiaohang Sun Yi Liu Jingliang Huang Xinxing Lin Hui Guo Wei-Hua Li 

机构地区：[1]School of Chemical Engineering and Technology,Sun Yat-sen University,Zhuhai 519082,China [2]School of Materials Science and Engineering,Sun Yat-sen University,Guangzhou 510275,China

出　　处：《Journal of Materials Science & Technology》2022年第26期227-235,共9页材料科学技术（英文版）

基　　金：the financial support from the National Natural Science Foundation of China(NSFC)(Nos.51903253,51879292);Natural Science Foundation of Guangdong Province of China(No.2019A1515011150)。

摘　　要：Owing to their inherent semi-solid property and lubricant ability,organogels manifest various unique characteristics and serve as promising candidates for antifouling.However,the poor mechanical properties of organogels often limit their practical applications.Herein,we report a simple and effective method to prepare organogels with reinforced mechanical performance and surface lubricant ability with the synergistic roles played by oleophobic and oleophilic chains.The rigid oleophobic chains have a poor affinity to lubricating solvent,which gives rise to high oleophobic interactions between polymer networks;the soft oleophilic chains possess a high affinity to the low surface energy solvent,which lead to high solvent content to maintain the satisfactory lubricant capacity.The organogel of oleophobic methyl methacrylate(MMA)and oleophilic lauryl methacrylate(LMA)is chosen as a representative example to illustrate this concept.With the optimal composition,the as-prepared organogels offer satisfactory tensile fracture stress,fracture strain,Young’s modulus,toughness,and tearing fracture energy of 480 k Pa,550%,202 k Pa,1.14 MJ m,and 5.14 k J m,respectively,which are far beyond the classical PLMA organogels.Furthermore,the biofouling resistance tests demonstrate 4 to 9-fold reduction of protein and bacteria adhesion on the reinforced organogels surface in comparison to the glass substrate and solvent-free dry organogels.This simple and effective approach to toughen organogels,we hope,can be applied in various fields with different practical functional requirements in the future.

关 键 词：ORGANOGELS Mechanical reinforcement Fouling-resistance Slippery surface 

分 类 号：TQ427.26[化学工程]