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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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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