Characteristics of thin cellulose ester films spin-coated from acetone and ethyl acetate solutions |
| |
Authors: | Jr" target="_blank">J AmimJr P M Kosaka D F S Petri |
| |
Institution: | 1.Instituto de Química,Universidade de S?o Paulo,Sao Paulo,Brazil |
| |
Abstract: | Spin-coated films of cellulose acetate (CA), cellulose acetate propionate (CAP), cellulose acetate butyrate (CAB) and carboxymethylcellulose
acetate butyrate (CMCAB) have been characterized by ellipsometry, atomic force microscopy (AFM) and contact angle measurements.
The films were spin-coated onto silicon wafers, a polar surface. Mean thickness values were determined by means of ellipsometry
and AFM as a function of polymer concentration in solutions prepared either in acetone or in ethyl acetate (EA), both are
good solvents for the cellulose esters. The results were discussed in the light of solvent evaporation rate and interaction
energy between substrate and solvent. The effects of annealing and type of cellulose ester on film thickness, film morphology,
surface roughness and surface wettability were also investigated.
Electronic supplementary material The online version of this article (doi:) contains supplementary material, which is available to authorized users. |
| |
Keywords: | Cellulose esters Ellipsometry AFM Acetone Ethyl acetate Thin films |
本文献已被 SpringerLink 等数据库收录! |
|