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| Content Provider | Springer Nature Link |
|---|---|
| Author | Kosaka, P.M. Kawa, Y. Salvadori, M.C. Petri, D.F.S. |
| Copyright Year | 2005 |
| Abstract | The adsorption of cellulose acetate (CA), cellulose acetate propionate (CAP) and cellulose acetate butyrate (CAB) from solutions prepared in acetone onto silicon wafers led to ultrathin films, which were characterized by ellipsometry, atomic force microscopy (AFM) and contact angle measurements. The polysaccharides films were characterized in the air just after their formation and after annealing at temperatures higher than their glass transition temperature or melt temperature. The films thickness close to 2 nm and surface roughness did not vary significantly upon annealing. AFM images revealed the presence of small clumps dispersed on a homogeneous layer, which covered completely the Si wafers. Such topographic details were also observed after annealing. However, upon annealing the films surfaces changed from hydrophilic to hydrophobic, evidencing molecular re-orientation at the solid–air interface. The adhesion of bovine serum albumin (BSA) and lipase onto the cellulose esters films was quantified in order to evaluate the possibility of applying such films as selective support for biomolecules. |
| Starting Page | 351 |
| Ending Page | 359 |
| Page Count | 9 |
| File Format | |
| ISSN | 09690239 |
| Journal | Cellulose |
| Volume Number | 12 |
| Issue Number | 4 |
| e-ISSN | 1572882X |
| Language | English |
| Publisher | Kluwer Academic Publishers |
| Publisher Date | 2005-01-01 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Annealing Atomic force microscopy Bovine serum albumin Cellulose esters Contact angle Ellipsometry Lipase Ultrathin films Organic Chemistry Physical Chemistry Polymer Sciences Bioorganic Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Polymers and Plastics |
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