Anggriawan, Wahyu (2015) Fabrikasi Alat Ukur Sudut Kontak Dual Channel Untuk Mengetahui Sifat Polaritas Suatu Bahan. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pada penelitian ini telah dibuat alat ukur sudut kontak
dengan modifikasi dual channel. Pengujian kinerja alat dilakukan
dengan mengukur nilai sudut kontak dan diameter tiga bahan padat
(politetrafluoroetilen, polivinilklorida dan polimetilmetakrilat) dan
bahan cair (akua demineralisasi, etanol dan toluen) yang masingmasing
memiliki nilai momen dipol berbeda. Hasil pengujian
kinerja alat menunjukkan nilai sudut kontak 118,783° yang sesuai
dengan rentang nilai standar alat (108-125°) pada ASTM C813-90.
Hasil pengukuran pada bahan air-PTFE (θ=118,783°, D=0,260 cm),
air-PVC (θ=83,196°, D=0,311 cm), air-PMMA (θ=74,468°,
D=0,340 cm), etanol-PTFE (θ=52,351°, D=0,320 cm) dan toluen-
PTFE (θ=40,204°, D=0,366 cm) diperoleh nilai sudut kontak yang
berbeda pada diameter yang berbeda. Nilai sudut kontak air pada
PTFE paling tinggi dibandingkan dengan etanol dan toluen sesuai
dengan besar nilai momen dipol yang dimiliki. Penelitian ini dapat
digunakan sebagai langkah awal penggunaan alat ukur sudut kontak
untuk mengetahui sifat polaritas bahan.
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In this research, contact angle meter had constructed by
dual channel modification. This tools had its performance tested by
measuring the contact angle and diameter value of the three different
solid material (polytetrafluoroethylene, polyvinylchloride and
polymethylmethacrylate) and liquid material (aqua demineralization,
ethanol and toluene) which have different dipole moment. The value
of standardization is 118,783° in accordance with the range of
values (108-125°) in ASTM C813-90 standard tools. These results
for water droplet on PTFE (θ=118,783°, D=0,260 cm), PVC
(θ=83,196°, D=0,311 cm), PMMA (θ=74,468°, D=0,340 cm),
etanol droplet on PTFE (θ=52,351°, D=0,320 cm) and toluen
droplet on PTFE (θ=40,204°, D=0,366 cm) found that contact angle
value different in every diameter. For the water droplet on PTFE,
contact angle value is higher than ethanol and toluene droplet on
PTFE caused by different dipole moment. This study can be used as
an initial step using the contact angle measuring instrument to
determine the polarity material properties.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSKi 681.753 Ang f |
| Uncontrolled Keywords: | alat ukur sudut kontak dual channel, momen dipol, pembasahan, analisis sudut kontak, sifat polaritas |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Faculty of Mathematics and Science > Chemistry > 47201-(S1) Undergraduate Thesis |
| Depositing User: | Mr. Tondo Indra Nyata |
| Date Deposited: | 23 Apr 2018 05:18 |
| Last Modified: | 23 Apr 2018 05:18 |
| URI: | http://repository.its.ac.id/id/eprint/51788 |
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