CAJ | 학술논문

通过在双亲性三嵌段共聚物( PEO-PDMS-PEO)的溶液中加入不同极性的微量选择性溶剂, 分别制得胶束和反胶束微粒, 不同组分的溶液涂膜后显示出明显的浸润性差异. 采用透射电镜、原子力显微镜和X射线光电子能谱分别对胶束和反胶束微粒在溶液中和成膜后的结构以及表面化学组成进行了表征, 结果表明, 不同选择性溶剂所形成的胶束和反胶束微粒的结构差异, 导致了涂膜的表面化学组成的不同, 最终影响其表面浸润性.
통과재쌍친성삼감단공취물( PEO-PDMS-PEO)적용액중가입불동겁성적미량선택성용제, 분별제득효속화반효속미립, 불동조분적용액도막후현시출명현적침윤성차이. 채용투사전경、 원자력현미경화X사선광전자능보분별대효속화반효속미립재용액중화성막후적결구이급표면화학조성진행료표정, 결과표명, 불동선택성용제소형성적효속화반효속미립적결구차이, 도치료도막적표면화학조성적불동, 최종영향기표면침윤성.
A simple approach was used to control the large-scale wettability of polymer-coated surfaces merely by adding micro-amounts of selective solvents of different polarity to tri-block copolymer solutions. An am-phiphilic tri-block copolymer, poly ( ethylene oxide)-poly (dimethylsiloxane)-poly ( ethylene oxide) ( PEO-PDMS-PEO), was used to form micelles and reverse micelles by adding micro-amounts of a selective solvent to the initial solution. The micellar and reverse micellar film coatings show different wettability from hydrophilic to hydrophobic, and even from superhydrophilic to superhydrophobic when micro-scale roughness is involved. The structures of the micelles and reverse micelles were studied by transmission electron microscopy and atomic force microscopy, and the surface chemical composition of the film coatings was determined by X-ray pho-toelectron spectroscopy( XPS). The results reveal that the main cause of differences in wettability is the different surface chemical compositions induced by the different structures of micelles and reverse micelles.