Functionalization of Polyurethane/Urea Copolymers with Amide Groups by Polymer Treatment with Ammonia Plasma
| Autor: | Alenka Vesel, Xiangyu Liu, Gregor Primc, Chiju Wei, Kaitian Xu, Miran Mozetič, Kevin C. Chen, Rok Zaplotnik |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
chemistry.chemical_classification Chemistry General Chemical Engineering 02 engineering and technology General Chemistry Polyethylene glycol Polymer 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Surfaces Coatings and Films chemistry.chemical_compound Ammonia X-ray photoelectron spectroscopy Amide 0103 physical sciences Polymer chemistry Urea Surface modification 0210 nano-technology Nuclear chemistry Polyurethane |
| Zdroj: | Plasma Chemistry and Plasma Processing. 36:835-848 |
| ISSN: | 1572-8986 0272-4324 |
| DOI: | 10.1007/s11090-016-9696-3 |
| Popis: | Samples of porous foam from polyurethane/urea copolymers based on polyethylene glycol (PURPEG) were prepared in the form of 1-mm-thick discs of diameter 10 cm and exposed to ammonia plasma created by inductively coupled radiofrequency discharge in either low density (E mode) or high density (H mode). The evolution of surface composition and structure upon plasma treatment was characterized by X-ray photoelectron spectroscopy. Treatment in the H mode caused depletion of oxygen even after 2 s of treatment, whereas treatment in the E mode caused gentle functionalization with amide groups. The concentration of functional groups depended on the discharge power, and the best results were obtained at moderately high power just before the transition from E to H modes. |
| Databáze: | OpenAIRE |
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