| Titre : | Polyelectrolyte multilayer stamping in aqueous phase and non-contact mode (2011) |
| Auteurs : | Sumit Mehrotra, Auteur ; Ilsoon Lee, Auteur ; Chun Liu, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 50 N° 15, Août 2011) |
| Article en page(s) : | pp 8851–8858 |
| Note générale : | Chimie industrielle |
| Langues : | Anglais |
| Tags : | Polyelectrolyte Aqueous phase |
| Résumé : | Polyelectrolyte multilayer (PEM) transfer printing has been previously achieved by stamping under dry conditions. Here, we show for the first time that PEM can be transferred from a stamp to the base substrate under aqueous conditions whereby the two surfaces are in a noncontact mode. Degradable multilayers of (PAA/PEG)10.5 followed by nondegradable multilayers of (PDAC/SPS)80.5 were fabricated under acidic pH conditions on either PDMS or glass (stamp), and subsequently transferred over top of another multilayer prepared on a different substrate (base substrate), with a spacing of 200 μm between the stamping surface and the base substrate. This multilayer transfer was performed under physiological pH conditions. This process is referred to herein as noncontact, aqueous-phase multilayer (NAM) transfer. NAM transfer can be useful for applications such as fabricating three-dimensional (3-D) cellular scaffolds. We attempted to create a 3-D cellular scaffold using NAM transfer, and characterized the scaffolds with conventional and fluorescence microscopy. |
| DEWEY : | 660 |
| ISSN : | 0888-5885 |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie102011m |
