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<http://repository.upi.edu/id/eprint/68068> <http://purl.org/dc/terms/title> "SINTESIS DAN KARAKTERISASI MEMBRAN NANOKOMPOSIT PES/PEG/PVA/SiO2"^^<http://www.w3.org/2001/XMLSchema#string> .
<http://repository.upi.edu/id/eprint/68068> <http://purl.org/ontology/bibo/abstract> "Abstrak\r\nPenelitian ini bertujuan untuk memperoleh informasi mengenai metode sintesis \r\ndan karakteristik membran komposit PES/PEG/ PVA/SiO2. Membran komposit disintesis \r\nmelalui metode inversi fasa dengan komposisi (% w/w) PES (17,25), PVA (3,58; 0,85; \r\n1,43; 2,57; 3,57) PEG (3,72), SiO2 (0,35; 0,85; 1,43; 2,57; 3,57), dan pelarut DMAc. \r\nMembran komposit hasil sintesis dikarakterisasi menggunakan FTIR spektroskopi, difraksi \r\nX-ray, Scanning Electron Microscopy (SEM), dan water contact angle. Hasil penelitian \r\nmenunjukkan bahwa interaksi antara PES, PVA, dan SiO2 diindikasikan dengan serapan \r\nkhas spektrum FTIR pada bilangan gelombang 1104 cm-1\r\nuntuk vibrasi Si-O-Si, 954 cm-1 \r\nuntuk vibrasi Si-OH, 1292 cm-1\r\nuntuk vibrasi O=S=O dan serapan 3442 cm-1\r\nuntuk \r\nregangan O-H. Foto penampang melintang (cross-section) SEM menunjukkan bahwa \r\npenambahan PVA dan SiO2 menyebabkan perubahan morfologi dan struktur pori membran \r\nPES yang signifikan. Hasil difraktogram sinar X (X-Ray) menunjukkan adanya pergeseran \r\npada puncak dari 13,15o o menjadi 14,21; 16,66o menjadi 17,03o\r\ndan 18,47o menjadi 18,85o\r\ndan ditemukannya puncak serapan baru setelah membran dimodifikasi yaitu pada puncak \r\nserapan 31,07o\r\n. Selain itu kristalisnitas membran pun naik dari 31,32% menjadi 46,62% \r\nyang mengindikasikan keberhasilan sintesis membran komposit. Penambahan \r\nPEG/PVA/SiO2 juga meningkatkan hidrofilisitas membran komposit, dimana membran \r\nkomposit MPS-1 memiliki hidrofilitas tertinggi dengan rata-rata sudut kontak (contact \r\nangle) sebesar 62,16o\r\n. Berdasarkan temuan tersebut, dapat disimpulkan bahwa membran \r\nkomposit PES/PEG/PVA/SiO2 telah berhasil disintesis melalui metode inversi fasa dengan \r\nkomposisi optimum PES: PEG: PVA: SiO2 yaitu 17,25%: 3,72%: 0,85%: 0,35%. \r\nPenambahan PEG/PVA/SiO2 meningkatkan hidrofilisitas dan memodifikasi struktur \r\nmorfologi membran PES. Pengukuran porositas, sifat mekanik dan aplikasi membran \r\nkomposit PES/PEG/PVA/SiO2 sebagai membran filtrasi dalam pengolahan air perlu dikaji \r\nlebih lanjut. \r\nKata kunci: Membran komposit, PES/PEG/PVA/SiO2, sintesis, karakterisasi\r\n\r\nabstract\r\nThis study aims to obtain information on the synthesis method and characteristics of \r\nPES/PEG/PVA/SiO2 composite membranes. Composite membranes were synthesized by \r\nphase inversion method with composition (% w/w) PES (17.25), PVA (3.58; 0.85; 1.43; \r\n2.57; 3.57) PEG (3.72) , SiO2 (0.35; 0.85; 1.43; 2.57; 3.57), and DMAc solvent. The \r\nsynthesized composite membranes were characterized using FTIR spectroscopy, X-ray \r\ndiffraction, Scanning Electron Microscopy (SEM), and water contact angle. The results \r\nshowed that the interaction between PES, PVA, and SiO2 was indicated by the typical \r\nabsorption spectrum of the FTIR at wave numbers 1104 cm-1\r\nfor the Si-O-Si vibration, 954 \r\ncm-1\r\nfor the Si-OH vibration, 1292 cm¬-1\r\nfor the Si-OH vibration. O=S=O and absorption \r\nis 3442 cm-1 for the OH strain. SEM cross-sectional photos showed that the addition of \r\nPVA and SiO2 caused significant changes in the morphology and pore structure of the PES \r\nmembrane. The results of the X-ray diffractogram (X-Ray) showed a shift in the peak from \r\n13.15o\r\nto 14.21; 16.66o\r\nto 17.03o\r\nand 18.47o\r\nto 18.85o\r\nand a new absorption peak was found \r\nafter the membrane was modified, namely at 31.07o\r\nabsorption peak which indicated the \r\nsuccess of composite membrane synthesis. Besides, the cristallinity of composite membrane \r\nincrease from 31,32% to 46,62%. The addition of PEG/PVA/SiO2 also increased the \r\nhydrophilicity of the composite membrane, where the MPS-1 composite membrane had the \r\nhighest hydrophilicity with an average contact angle of 62.16o\r\n. Based on these findings, it \r\ncan be concluded that the PES/PEG/PVA/SiO2 composite membrane has been successfully \r\nsynthesized through the phase inversion method with the optimum composition of PES: \r\nPEG: PVA: SiO2 ie 17.25%: 3.72%: 0.85%: 0 ,35%. The addition of PEG/PVA/SiO2 \r\nincreased the hydrophilicity and modified the morphological structure of the PES \r\nmembrane. Measurement of porosity, mechanical properties and applications of \r\nPES/PEG/PVA/SiO2 composite membranes as filtration membranes in water treatment \r\nneed to be studied further.\r\nKeywords: Composite membrane, PES/PEG/PVA/SiO2, synthesis, characterization"^^<http://www.w3.org/2001/XMLSchema#string> .
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