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Hasil Pencarian

Ditemukan 2 dokumen yang sesuai dengan query
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Taufan Medina Setiawan
Abstrak :
Silika berpori disintesis melalui teknik co-Micelle/Emulsion Templatting (co-MET) dengan menggunakan template surfaktan kationik Cetyil Tetra Ammonium Bromide (CTAB). Silika yang digunakan berasal dari Tetra Etil Orto Silikat (TEOS) dengan variasi berat akrilamida sebesar 1,5 g ; 2 g ; 2,5 g ; 3 g ; 3,5 g dan tanpa poliakrilamida. Silika hasil sintesis dikarakterisasi menggunakan instrument FTIR, XRD, SEM-EDS, dan BET. Pada silika dengan berat akrilamida 2,5 gr ; 3 gr dan 3,5 gr terbentuk pori yang merata. Silika berpori dijadikan pendukung katalis AlCl3 melalui teknik impregnasi dan diuji optimasinya dengan reaksi esterifikasi asam asetat dan etanol yang dilihat dari luas daerah kromatogram GC-MS. Persen konversi yang didapat dari reaksi esterifikasi dengan menghasilkan etil asetat adalah 28,19% ; 49,99% dan 19,84% untuk penggunaan katalis dengan berat akrilamida 2,5 g; 3 g dan 3,5 g. ...... Porous silica synthesized through co-Micelle/ Emulsion Templatting (co-MET) technique using template cationic surfactant Cetyil Tetra Ammonium Bromide (CTAB). Silica used from Tetra Ethyl Ortho Silicate (TEOS) with acrylamide weight variation of 1.5 g; 2 g; 2.5 g; 3 g; 3.5 g and without polyacrylamide. Silica synthesized were characterized using FTIR, XRD, SEM-EDS and BET. Silica produced with weight of acrylamide 2,5 g; 3 g and 3,5 g having pores diverse. Porous silica succesfully used as AlCl3 catalyst support by impregnation technique and tested optimization by esterification reaction of acetic acid with ethanol, which was analyzed using GC-MS. Percent conversion obtained from the esterification reaction is 28.19%; 49.99% and 19.84% for catalyst with weight of acrylamide 2.5 g; 3 g and 3.5 g.
Depok: Fakultas Matematika Dan Ilmu Pengetahuan Alam Universitas Indonesia, 2015
S58780
UI - Skripsi Membership  Universitas Indonesia Library
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Abstrak :
Porous silicon has a range of properties, making it ideal for drug delivery, cancer therapy, and tissue engineering. Porous silicon for biomedical applications provides a comprehensive review of this emerging nanostructured and biodegradable biomaterial. Chapters in part one focus on the fundamentals and properties of porous silicon for biomedical applications, including thermal properties and stabilization, photochemical and nonthermal chemical modification, protein-modified porous silicon films, and biocompatibility of porous silicon. Part two discusses applications in bioimaging and sensing, and explores the optical properties of porous silicon materials; in vivo imaging assessment and radiolabelling of porous silicon; and nanoporous silicon biosensors for DNA sensing and for bacteria detection. Finally, part three highlights drug loading and characterization of porous silicon materials, tumor targeting and imaging, and porous silicon scaffolds for functional tissue engineering, stem cell growth, and osteodifferentiation. With its acclaimed editor and international team of expert contributors, Porous Silicon for Biomedical Applications is a technical resource and indispensable guide for all those involved in the research, development, and application of porous silicon and other biomaterials, while providing a comprehensive introduction for students and academics interested in the field.
Cambridge, UK: Woodhead, 2014
e20427577
eBooks  Universitas Indonesia Library