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ITS » Paper and Presentation » Kimia - S2
Posted by aprill@is.its.ac.id at 12/11/2015 13:05:57  •  952 Views


PENGARUH MODIFIKASI SILAN TERHADAP SIFAT KONDUKTIFITAS PROTON DAN PERMEABILITAS METANOL DARI MEMBRAN KOMPOSIT KITOSAN -MONTMORILLONIT PADA DIRECT METHANOL FUEL CELL

EFFECT OF SILANE MODIFICATION TOWARD PROTON CONDUCTIVITY AND METHANOL PERMEABILITY OF CHITOSAN MONTMORILLONITE COMPOSITE MEMBRANE ON DIRECT METHANOL FUEL CELL

Author :
ALAM, MUHAMMAD NUR ( 1412 201 017 )




ABSTRAK

Suatu membran komposit polimer organik anorganik untuk aplikasi Direct Methanol Fuel Cell telah didesain menggunakan metode inversi fasa. Biopolimer kitosan DD 73 yang diekstraksi dari limbah kulit udang digunakan sebagai matriks dan montmorillonit digunakan sebagai filler. Montmorillonit dimodifikasi dengan agen pengkopling silan jenis 3 glikidiloksipropiltrimetoksi silan GPTMS dengan variasi konsentrasi silan 0 5 10 15 . Sifat sifat membran yang dikarakterisasi yaitu gugus fungsi morfologi permukaan stabilitas termal water uptake dan methanol uptake sedangkan uji kinerja membran terdiri dari pengukuran konduktifitas proton dan permeabilitas metanol. Konduktifitas proton dari membran mengalami peningkatan seiring dengan meningkatnya konsentrasi silan sedangkan permeabilitas metanol mengalami penurunan yang signifikan. Selain itu konduktifitas proton juga mengalami peningkatan seiring dengan meningkatnya suhu pengukuran. Konduktifitas proton tertinggi diperoleh pada membran komposit kitosan - montmorillonit termodifikasi silan 10 yang diukur pada suhu operasi 80 oC sebesar 297 x 10-4 S cm-1 sedangkan konduktifitas terendah diperoleh pada membran kitosan - montmorillonit tanpa modifikasi silan 0 silan yang diukur pada suhu kamar sebesar 007 x 10-4 S cm-1. Permeabilitas metanol tertinggi sebesar 1420 x 10-6 cm2s yang diperoleh pada membran kompsit kitosan montmorillonit tanpa modifikasi silan sedangkan permeabilitas metanol terendah sebesar 261 x 10-6 cm2s yang diperoleh pada membran komposit kitosan montmorillonit termodifikasi silan 15 .


ABSTRACT

An organic - anorganic membrane Direct Methanol Fuel Cell was designed by phase invertion method. Chitosan biopolymer DD 73 was extracted from shrimp waste used as matrix while montmorillonite used as filler. Montmorillonite was modified with silane coupling agent 3- glixydiloxypropyltrimetoxy silane type GPTMS with variation of concentrations are 0 5 10 15 . The properties of composite membrane such as functional group surface morphology thermal stability water uptake and methanol uptake were investigated while the performance such as proton conductivity and methanol permeability also were investigated. Proton conductivity of membrane elevated with increasing silane concentration while methanol permeability decreased significantly. Similarly the higher operating temperature causes an increase in proton conductivity. The highest proton conductivity of the membrane that obtained by the chitosan montmorillonite silane 10 measured at 80 C operating temperature was 2.97 x 10-4 S cm-1 while the lowest conductivity obtained by chitosan - montmorillonite membrane without modified silane 0 silane at ambient temperature was 0.07 x 10-4 S cm-1. The highest methanol permeability that obtained by the chitosan montmorillonit without silane was 14.20 x 10-6 cm2s while the lowest methanol permeability obtained by chitosan montmorillonit silan 15 composite membrane was 2.61 x 10-6 cm2s.



KeywordsKitosan; Konduktivitas Proton; Membran; Montmorillonit; Permeabilitas metanol; Silan
 
Subject:  chitosan; Membran (teknologi)
Contributor
  1. LUKMAN ATMAJA, M.Si, Ph.D
Date Create: 12/11/2015
Type: Text
Format: pdf
Language: Indonesian
Identifier: ITS-paper-14121150008177
Collection ID: 14121150008177
Call Number: RTKi 573.774 Ala p


Source
Paper and Presentations, Chemistry, RTKi 573.774 Ala p, 2015

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Copyright @2015 by ITS Library. This publication is protected by copyright and per obtained from the ITS Library prior to any prohibited reproduction, storage in a re transmission in any form or by any means, electronic, mechanical, photocopying, reco For information regarding permission(s), write to ITS Library




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ITS-paper-14121150008177-39491.pdf




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