셀룰로오스 에스터의 LB 막 제조 및 분석

Preparation and Characterization of Cellulose Esters Langmuir-Blodgett(LB) Films

세룰로오스 에스터의 LB막을 제조하여 분석하였다. 탄화수소 사슬 길이에 대한 압력-면적 곡선의 변화를 알아보았으며, 압력-면적 곡선의 온도에 대한 의존성으로부터 상전이 과정을 설명하였다. 수평증착법으로 X-type의 다층막을 만들 수 있었으며 접축각, 두께 및 XPS를 측정하였다.

The reparation and characterization of cellulose esters LB films with various alkyl chain lengths were studied. Monolayers of cellulose triesters with medium chain length such as trioctanoate(C-8), tridecanoate(C-10), and tridodecanoate(C-12), exhibited a characteristic phase transition from expanded to condensed states. The mechanism of phase transition was discussed on the basis of the temperature dependence of the surface $pressure-area(\pi-A)$ isotherms. By the horizontal dipping method, X-type multilayers of cellulose esters were prepared and characterized using the contact angle and XPS spectra.