SUPRIHATIN, . (2021) MODIFIKASI POLIMER KRISTAL CAIR POLIMETIL METAKRILAT (PMMA) DAN RM82 MENGGUNAKAN METODE UV CURING. Sarjana thesis, UNIVERSITAS NEGERI JAKARTA.
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Abstract
Potensi kristal cair dalam bebrbagai aplikasi seperti perangkat penyimpanan, mikrofluida, optik, elektronok fleksibel, dan otot buatan. Penelitian ini dilakukan dengan memodifikasi PoliMetil Metakrilat (PMMA) dengan mesogen reakrif RM82 menggunakan metode UV Curing. Konsentrasi RM82 yang dibuat variasi dari 15 wt%, 20 wt%, 25 wt%, hingga 30 wt%. Proses UV Curing menggunakan campuran pelarut kloroform dan dimetilformamida yang diproses pada plat kaca dan diinduksi dengan sinar UV. Produk polimer kristal cair PMMA-RM82 yang dihasilkan dari penelitian ini adalah film tipis transparan. Karakterisasi polimer kristal cair PMMA-RM82 adalah Fourier Transformed Infra Red (FTIR), X Ray Diffraction (XRD) dan Scanning Electron Microscopy (SEM). Puncak FTIR menunjukkan interaksi yang kuat antara PMMA dengan 30% RM82 yang ditunjukkan dengan adanya vibrasi gugus CH3 gugus karbonil, vibrasi ikatan ester C-O. Puncak XRD menunjukkan lebar puncak 2θ pada 150 sampai 250 karena munculnya segmen kristal lunak dan dua puncak kristalinitas intensitas tinggi pada 2θ 15,80 dan 2θ 17,50 ketika 30 wt% RM82 ditambahkan. Penambahan 30% wt RM82 menunjukkan terjadinya ikatan silang fase nematik dalam polimer kristal cair PMMA-RM82. Hasil SEM menunjukkan polimer kristal cair PMMA-RM82 memiliki morfologi seperti butir padi sesuai dengan monomer mesogenik pendek dengan dan tanpa spacer fleksibel. ********* Potential of liquid crystals in various applications such as storage devices, microfluidic, optics, flexible electronics, and artificial muscles. This research was conducted by modify of PolyMethyl Methacrylate (PMMA) with mesogen reactive of RM82 using UV Curing method. This research using variations concentration of RM82 which was made varies from 15 wt%, 20 wt%, 25 wt% to 30 wt%. Process UV Curing using mixtures solvents of chloroform and dimethylformamide that process on a glass plate and induced by UV light. Product of liquid crystal polymer PMMA-RM82 that resulted this research is a transparent thin film. Characterizations of liquid crystal polymer PMMA-RM82 were Fourier Transformed Infra Red (FTIR), X Ray Diffractions (XRD), Scanning Electron Microscopy (SEM). Peaks of FTIR showed that a strong interaction between PMMA and 30% of RM82 which is indicated by the presence of CH3 group vibrations, carbonyl group, C-O ester bond fibrations. Peaks of XRD showed width peak 2θ in 150 until 250 due to the appearance pf soft crystallinity peaks at 2θ is 15,80 and 2θ is 17,50 when 30 wt% of RM82 was added. The addition 30 wt% of RM82 showed the occurence of cross-linked nematic phase in the liquid crystal polymer PMMARM82. The SEM results showed that liquid crystal polymer PMMA-RM82 had a rice grain-like morphology according to short mesogenic monomer with and without flexible spacers.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Additional Information: | 1.) Dr. Afrizal, M.Si. ; 2.) Dr. Setia Budi, M.Sc. |
| Subjects: | Sains > Kimia |
| Divisions: | FMIPA > S1 Kimia |
| Depositing User: | Users 14629 not found. |
| Date Deposited: | 12 Jul 2022 03:56 |
| Last Modified: | 12 Jul 2022 03:56 |
| URI: | http://repository.unj.ac.id/id/eprint/31625 |
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