Nasih, Fahruddin Aziz (2017) Pengaruh Variasi Pelarut Terhadap Lapisan Copper Phthalocyanine (Cupc) Dan Sensitivitas Terhadap Perubahan Relative Humidity (Rh) Pada Qcm Sebagai Sensor Kelembaban. Sarjana thesis, Universitas Brawijaya.
Abstract
AplikasiQuartz Crystal Microbalance (QCM) sebagai sensor kelembaban dapat dioptimalkandenganmelakukan pelapisan di atas permukaan QCM dengan Polistirena (Ps) dan Copper Phthalocyanine (CuPc) untuk meningkatkan sensitivitasnya dalam merespon perubahan nilai Relative Humidity (RH). Dilakukan modifikasi kekasaran permukaan dengan memberikan variasi pelarut pada larutan Ps. Telah dilakukan studi deposisi lapisan CuPc di atas lapisan Ps dengan variasi pelarut Kloroform, Toluena, Xilen, dan THF. Deposisi lapisan CuPc dilakukan dengan metode Vacuum Evaporation dengan waktu deposisi 5 menit.Ketebalan lapisan Ps dan CuPc dihitung dengan persamaan Saurbrey. Morfologi permukaan lapisan dianalisis dengan menggunakan mikroskop optik. Analisis kekasaran dilakukan dengan Topology Measurement System (TMS) dengan menggunakan parameter kekasaran rata-rata garis (Ra).Nilai kekasaran permukaan tertinggi ditunjukkan lapisan Ps dengan pelarut Kloroform sebesar 472,02 nm.Hasil perhitungan ketebalan menunjukkan lapisan CuPc di atas lapisan Ps dengan pelarut Kloroform paling tinggi yakni sebesar 1,89μm.Nilai kekasaran permukaan lapisan CuPc di atas lapisan Ps dengan pelarut Kloroform menunjukkan nilai tertinggi yakni sebesar 647,58nm,.Hasil uji QCM terlapisi CuPc sebagai sensor kelembaban menunjukkan efektivitas deteksi perubahan RH paling baik pada CuPc terdeposisi di ataslapisan Ps dengan pelarut Kloroform dengan laju perubahan frekuensi 3-5,5 Hz.. Dapat disimpulkan bahwa tingkat kekasaran sebanding dengan efektivitas adsorpsi uap air.
English Abstract
The application of Quartz Crystal Microbalance (QCM) as humidity sensor can be optimized by coating Polystyrene (Ps) and Copper Phthalocyanine (CuPc) thin layer on the surface of QCM to increase the sensitivity in response due to the changes of Relative Humidity (RH) value. The modification of surface roughness on the QCM surface was done by giving different solvent of Ps solution on each sample. The deposition of CuPc thin layer on the Ps thin layer was done by varying the solvent that be used like Chloroform, Toluene, Xylene, and Tetrahydrofuran (THF). Deposition of CuPc thin layer was done by Vacuum Evaporation method with deposition time about 5 minutes. The thickness of Ps and CuPc layer was calculated by Saurbrey equation. The surface morphology was analyzed by optical microscope. The surface roughness was analyzed by Topology Measurement System (TMS) that use Roughness Average (RA) line parameter. Ps layer with Chloroform solvent has the highest surface roughness with 472,02 nm RA value and thickest layer with 0,576 μm in thickness. CuPc layer deposited on the Ps layer with Chloroform solvent has the highest surface roughness with 647,58 nm RA value. CuPc layer deposited on the Ps layer with Chlororform solvent shows the most sensitive detection in RH change based on humidity sensor testing with the rate of frequency change about 3-5.5 Hz. It is implied that surface roughness proportional with the water vapor adsorption effectivity
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/FMIPA/2017/373/051709713 |
| Uncontrolled Keywords: | QCM, CuPc, Pelarut, Sensor Kelembaban |
| Subjects: | 500 Natural sciences and mathematics > 530 Physics |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Fisika |
| Depositing User: | Nur Cholis |
| Date Deposited: | 30 Oct 2017 06:02 |
| Last Modified: | 22 Nov 2021 06:40 |
| URI: | http://repository.ub.ac.id/id/eprint/4553 |
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