-, Heraniawati (2018) Pengaruh Laju Alir Pada Plasma Oksigen Terhadap Jenis Spesies Plasma Dan Sifat Hidrofobisitas Permukaan Polistiren Dengan Menggunakan Optical Emission Spectroscopy (OES). Sarjana thesis, Universitas Brawijaya.
Abstract
Penelitian mengenai modifikasi lapisan tipis polistiren dan karakterisasi plasma oksigen telah dilakukan. Modifikasi tersebut menggunakan metode spin coating untuk mendeposisikan lapisan tipis polistiren di atas QCM yang kemudian diberikan perlakuan plasma oksigen. Deposisi lapisan tipis polistiren di atas QCM dilakukan dengan metode spin coating, kemudian diberi perlakuan plasma oksigen. Plasma oksigen dibangkitkan menggunakan tegangan RF 100 volt, tegangan DC 0 volt, tekanan 40 Pa, dan variasi laju alir 20, 30, 40, 50, dan 60 ml/menit. Hasil perlakuan menunjukkan permukaan polistiren bersifat hidrofilik. Data Spektrum emisi diperoleh dari karakterisasi menggunakan Optical Emission Spectroscopy (OES) dan diidentifikasi dengan acuan database NIST. Spesies plasma yang paling dominan hasil identifikasi ialah atom netral OI dan ion OII. Temperatur elektron hasil perhitungan persamaan Boltzmann antara dua garis emisi pada spesies OI yang sama diperoleh nilai 0,97 – 1,12 eV. Selanjutnya, densitas elektron diperoleh dari persamaan Saha- Boltzmann antara spesies OI dan OII dengan nilai (0,04 – 3,77) 1015 m-3. Temperatur dan densitas elektron pada penelitian ini menurun dengan meningkatnya laju alir gas oksigen.
English Abstract
In this research, modified the polystyrene thin films using oxygen plasma treatment and characterization has been investigated. The modification was performed by depositions of polystyrene films using spin coating method then treated by oxygen plasma. The oxygen plasma was generated using an RF generator of 100 volt, DC generator of 0 volt, pressure of 40 Pa, and 5 variations of oxygen flow rate (20 – 60 ml/minute). The result show that the surface of polystyrene is hydrophilic. Data of emission spectrum was obtained from characterization using Optical Emission Spectroscopy (OES) and was identified using NIST database as a reference. The identification shows that the dominant plasma species was OI atom (neutral) and OII ion. electron temperature that was calculated using Boltzmann equation between to emission lines of the same species OI is 0,97 – 1,12 eV. Electron density was calculated using Saha-Boltzmann equation between species OI and OII is (0,04 – 3,77) 1015 m-3. Based on the data, the electron temperature and the electron density are decreasing along with the increasing of oxygen flow rate.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/MIPA/2018/220/051806158 |
| Uncontrolled Keywords: | plasma oksigen, hidrofobisitas, temperatur elektron, densitas elektron oxygen plasma, hydrophobicity, electron temperature, electron density |
| Subjects: | 500 Natural sciences and mathematics > 530 Physics > 530.4 States of matter > 530.44 Plasma physics |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Fisika |
| Depositing User: | Budi Wahyono Wahyono |
| Date Deposited: | 04 Jun 2020 03:02 |
| Last Modified: | 18 Oct 2021 03:29 |
| URI: | http://repository.ub.ac.id/id/eprint/168135 |
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