功能仿生材料助力材料综合实验教学——超亲水-水下超疏油膜材料制备及性能评价

Functional Biomimetic Materials Assisting Materials Comprehensive Experimental Teaching: Preparation and Performance Evaluation of Superhydrophilic-Underwater Superoleophobic Membrane Materials

随着材料科学与技术的进步,材料综合实验课程需要不断推出适合材料理论发展的实验。基于材料表界面润湿理论,以研究材料表面结构与性能关系为主要切入点进行实验设计,通过植酸与戊二醛络合反应生成亲水性复合物,并通过抽滤方式修饰到PVDF膜表面制得超亲水-水下超疏油PVDF膜材料,采用SEM和红外光谱对改性PVDF膜材料进行表面结构和化学组成表征,采用接触角测量仪对PVDF膜改性前后的润湿性能进行评价。该实验的开设,让学生了解了材料表界面改性方法以及现代分析技术,掌握了材料结构与性能之间构效关系的分析方法,并强化了学生实验操作和数据处理能力,在提高学生的科研思维和和动手能力方面有良好效果。

With the progress of material science and technology, the comprehensive experiment course of materials needs to continuously introduce experiments suitable for the development of materials theory. Based on the wetting theory of material surface interface, the experimental is carried out to research the relationship between surface structure and properties of materials. The phytic acid reacts with glutaraldehyde to form a hydrophilic compound, and then modified it on the surface of PVDF membrane by suction filtration to preparing the super hydrophilic-underwater super oleophobic PVDF membrane material. The SEM and FT-IR was used to characterize the surface and chemical composition of the modified PVDF membrane, and the contact angle measuring instrument was used to evaluate the wettability of PVDF membrane before and after modification. With the opening of this experiment, students can understand the interface modification method of structure-activity relationship between material structure and properties. It also strengthens students’ experimental operation and data processing ability, and has a good effect in improving students’ scientific research thinking and practical ability.