The Study of Coupled Tubular Plasma Modified Polypropylene (PP) and Polymethylmethacrylate (PMMA) and Its Surface Analysis
| Autor: | Jen Feng Lin, 林仁豐 |
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| Rok vydání: | 2016 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 104 In this study, tubular capacitor coupled plasma reactor is used to do surface modification of polypropylene and polymethylmethacrylate, and analysis the surface property. The reactor gas of the study are oxygen, nitrogen and hydrogen which are used to do plasma surface activation and modification. To change the property of polypropylene and polymethylmethacrylate which are hydrophobic and low surface free energy. This study is separate into two parts. First part is investigating the property of polypropylene. Second part is investigating the property of polymethylmethacrylate. The experimental parameters change in this study are plasma power, treat time and system pressure. Investigating the effect of surface modification effect by three different gas, respectively. The analytical instruments of this study are contact angle, Fourier transform infrared spectroscopy and optical emission spectroscopy which are used to measure the contact angle, detect the functional groups of modified substrate and diagnosis the plasma species. To deduce the plasma activation reactor mechanism. In the result, the water contact angle of polypropylene substrate modified by three different reactor gas decrease from 89.4° into 64.84°, 64.36° and 74.9°. The surface free energy of polypropylene substrate modified by three different reactor gas increase from 27.06 mJ/m2 into 46.08 mJ/m2, 52.34 mJ/m2, 43.64 mJ/m2. The water contact angle of Polymethylmethacrylate substrate modified by three different reactor gas decrease from 78.7° into 42.2°, 46.34°, 64.549°. The surface free energy of Polymethylmethacrylate substrate modified by three different reactor gas increase from 46.57 mJ/m2 into 62.51 mJ/m2, 61.32 mJ/m2, 49.99 mJ/m2. The C=O functional group of substrate after plasma treat in wave number 1732 cm¬-1 is detect by FTIR and make it hydrophilic. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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