CAJ | 학술논문

研究用两亲性嵌段共聚物和纳米二氧化硅制备超疏水表面.采用可逆加成-断裂链转移聚合法(RAFT)合成了两亲性嵌段共聚物聚甲基丙烯酸叔丁酯- b-聚(4-乙烯基吡啶),用红外光谱,核磁共振,凝胶渗透色谱对聚合物进行了表征,将嵌段共聚物接枝到纳米二氧化硅上,形成一个有机无机杂化材料,通过调节pH值来控制杂化材料在水中的聚集行为,构筑了微纳双重结构的粗糙表面.该表面为超疏水表面,对水接触角达151°,滚动角＜5°.扫描电镜分析表面形貌表明:具有微纳双重结构的类似荷叶表面是形成超疏水的根本原因.
연구용량친성감단공취물화납미이양화규제비초소수표면.채용가역가성-단렬련전이취합법(RAFT)합성료량친성감단공취물취갑기병희산숙정지- b-취(4-을희기필정),용홍외광보,핵자공진,응효삼투색보대취합물진행료표정,장감단공취물접지도납미이양화규상,형성일개유궤무궤잡화재료,통과조절pH치래공제잡화재료재수중적취집행위,구축료미납쌍중결구적조조표면.해표면위초소수표면,대수접촉각체151°,곤동각＜5°.소묘전경분석표면형모표명:구유미납쌍중결구적유사하협표면시형성초소수적근본원인.
The present study demonstrates a superhydrophobic surface prepared by using amphiphilic block copolymers and nano silica. Amphiphilic block copolymer poly (tert-butyl methacrylate-b-4-vinylpyridine) was synthesized through RAFT (reversible addition-fragmentation chain transfer) polymerization. IR, 1H NMR spectrum and GPC were utilized to characterize the chemical structures of the copolymer. The "grafting" approach was used to graft the amphiphilic block copolymer brushes of Poly (tert-butyl methacrylate-block-4-vinylpyridine) onto silica nanoparticles, and an organic-inorganic hybrid materials was formed, and then the aggregates of hybrid materials were controlled by regulating the pH value to construct a hierarchically textured coating on silicon wafer. The surface was a superhydrophobic surface, the contact angle on the suface of coating was 151°,and the sliding angle was below 5°. SEM analysis has shown that micro-nano dual structure is the root causes of the formation of the superhydrophobic surface.