SINTESIS DAN KARAKTERISASI MEMBRAN NANOKOMPOSIT PES/PEG/PVA/SiO2

    Silvia Widiyanti, - (2021) SINTESIS DAN KARAKTERISASI MEMBRAN NANOKOMPOSIT PES/PEG/PVA/SiO2. S1 thesis, Universitas Pendidikan Indonesia.

    Abstract

    Abstrak
    Penelitian ini bertujuan untuk memperoleh informasi mengenai metode sintesis
    dan karakteristik membran komposit PES/PEG/ PVA/SiO2. Membran komposit disintesis
    melalui metode inversi fasa dengan komposisi (% w/w) PES (17,25), PVA (3,58; 0,85;
    1,43; 2,57; 3,57) PEG (3,72), SiO2 (0,35; 0,85; 1,43; 2,57; 3,57), dan pelarut DMAc.
    Membran komposit hasil sintesis dikarakterisasi menggunakan FTIR spektroskopi, difraksi
    X-ray, Scanning Electron Microscopy (SEM), dan water contact angle. Hasil penelitian
    menunjukkan bahwa interaksi antara PES, PVA, dan SiO2 diindikasikan dengan serapan
    khas spektrum FTIR pada bilangan gelombang 1104 cm-1
    untuk vibrasi Si-O-Si, 954 cm-1
    untuk vibrasi Si-OH, 1292 cm-1
    untuk vibrasi O=S=O dan serapan 3442 cm-1
    untuk
    regangan O-H. Foto penampang melintang (cross-section) SEM menunjukkan bahwa
    penambahan PVA dan SiO2 menyebabkan perubahan morfologi dan struktur pori membran
    PES yang signifikan. Hasil difraktogram sinar X (X-Ray) menunjukkan adanya pergeseran
    pada puncak dari 13,15o o menjadi 14,21; 16,66o menjadi 17,03o
    dan 18,47o menjadi 18,85o
    dan ditemukannya puncak serapan baru setelah membran dimodifikasi yaitu pada puncak
    serapan 31,07o
    . Selain itu kristalisnitas membran pun naik dari 31,32% menjadi 46,62%
    yang mengindikasikan keberhasilan sintesis membran komposit. Penambahan
    PEG/PVA/SiO2 juga meningkatkan hidrofilisitas membran komposit, dimana membran
    komposit MPS-1 memiliki hidrofilitas tertinggi dengan rata-rata sudut kontak (contact
    angle) sebesar 62,16o
    . Berdasarkan temuan tersebut, dapat disimpulkan bahwa membran
    komposit PES/PEG/PVA/SiO2 telah berhasil disintesis melalui metode inversi fasa dengan
    komposisi optimum PES: PEG: PVA: SiO2 yaitu 17,25%: 3,72%: 0,85%: 0,35%.
    Penambahan PEG/PVA/SiO2 meningkatkan hidrofilisitas dan memodifikasi struktur
    morfologi membran PES. Pengukuran porositas, sifat mekanik dan aplikasi membran
    komposit PES/PEG/PVA/SiO2 sebagai membran filtrasi dalam pengolahan air perlu dikaji
    lebih lanjut.
    Kata kunci: Membran komposit, PES/PEG/PVA/SiO2, sintesis, karakterisasi

    abstract
    This study aims to obtain information on the synthesis method and characteristics of
    PES/PEG/PVA/SiO2 composite membranes. Composite membranes were synthesized by
    phase inversion method with composition (% w/w) PES (17.25), PVA (3.58; 0.85; 1.43;
    2.57; 3.57) PEG (3.72) , SiO2 (0.35; 0.85; 1.43; 2.57; 3.57), and DMAc solvent. The
    synthesized composite membranes were characterized using FTIR spectroscopy, X-ray
    diffraction, Scanning Electron Microscopy (SEM), and water contact angle. The results
    showed that the interaction between PES, PVA, and SiO2 was indicated by the typical
    absorption spectrum of the FTIR at wave numbers 1104 cm-1
    for the Si-O-Si vibration, 954
    cm-1
    for the Si-OH vibration, 1292 cm¬-1
    for the Si-OH vibration. O=S=O and absorption
    is 3442 cm-1 for the OH strain. SEM cross-sectional photos showed that the addition of
    PVA and SiO2 caused significant changes in the morphology and pore structure of the PES
    membrane. The results of the X-ray diffractogram (X-Ray) showed a shift in the peak from
    13.15o
    to 14.21; 16.66o
    to 17.03o
    and 18.47o
    to 18.85o
    and a new absorption peak was found
    after the membrane was modified, namely at 31.07o
    absorption peak which indicated the
    success of composite membrane synthesis. Besides, the cristallinity of composite membrane
    increase from 31,32% to 46,62%. The addition of PEG/PVA/SiO2 also increased the
    hydrophilicity of the composite membrane, where the MPS-1 composite membrane had the
    highest hydrophilicity with an average contact angle of 62.16o
    . Based on these findings, it
    can be concluded that the PES/PEG/PVA/SiO2 composite membrane has been successfully
    synthesized through the phase inversion method with the optimum composition of PES:
    PEG: PVA: SiO2 ie 17.25%: 3.72%: 0.85%: 0 ,35%. The addition of PEG/PVA/SiO2
    increased the hydrophilicity and modified the morphological structure of the PES
    membrane. Measurement of porosity, mechanical properties and applications of
    PES/PEG/PVA/SiO2 composite membranes as filtration membranes in water treatment
    need to be studied further.
    Keywords: Composite membrane, PES/PEG/PVA/SiO2, synthesis, characterization

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    Official URL: http://repository.upi.edu
    Item Type: Thesis (S1)
    Uncontrolled Keywords: Membran komposit, PES/PEG/PVA/SiO2, sintesis, karakterisasi
    Subjects: Q Science > QD Chemistry
    Divisions: Fakultas Pendidikan Matematika dan Ilmu Pengetahuan Alam > Program Studi Kimia - S1 > Program Studi Kimia (non kependidikan)
    Depositing User: Silvia Widiyanti
    Date Deposited: 19 Oct 2021 02:50
    Last Modified: 19 Oct 2021 02:50
    URI: http://repository.upi.edu/id/eprint/68068

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