| Téléchargement | - Voir la version finale : Enzymatic surface erosion of poly(trimethylene carbonate) films studied by atomic force microscopy (PDF, 700 Kio)
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| DOI | Trouver le DOI : https://doi.org/10.1021/bm050460q |
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| Auteur | Rechercher : Zhang, Zheng; Rechercher : Zou, Shan; Rechercher : Vancso, G. Julius; Rechercher : Grijpma, Dirk W.; Rechercher : Feijen, Jan |
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| Format | Texte, Article |
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| Résumé | In this article, the surface erosion of spin-coated poly(trimethylene carbonate) (PTMC) films by lipase solutions from Thermomyces lanuginosus was studied using atomic force microscopy (AFM). PTMC films (23−48 nm thick) were stable in water at 37 °C for 16 h, while after immersion in lipase solutions at 37 °C for 30 s and 1 min, the average thickness of the film decreased in time at a rate of 11.0 ± 3.7 nm/min. The initially smooth films became significantly rougher during the erosion process. When the immersion time of the films in the lipase solutions was limited to less than 5 s, degradation of the surface was minimal and individual lipase molecules adsorbed on PTMC films could be discerned. By microcontact printing of the PTMC surfaces using a patterned PDMS stamp and lipase solution for 30 s, a predefined micropattern consisting of parallel, 5-μm-wide lines lying 5-nm deep and separated at a distance of 2 μm was formed. Friction images showed differences in surface properties between the recessed and protruding lines in the pattern. |
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| Date de publication | 2005-11-01 |
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| Maison d’édition | American Chemical Society |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Publication du CNRC | Cette publication n’est pas du CNRCCe sont des publications qui ont été rédigées par un auteur du CNRC, mais avant que celui-ci soit employé du CNRC. |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 8c8f8f8f-90e1-4e44-aa55-2659dc9c3e79 |
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| Enregistrement créé | 2019-04-15 |
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| Enregistrement modifié | 2020-05-30 |
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