Mohammad , Hossein Azariyan
(2016)
Synthesis And Characterization Of Organic-Inorganic Films Based On The Composites Of Epoxidized Natural Rubber (Enr-50)/Polyaniline And Zirconia.
PhD thesis, Universiti Sains Malaysia.
Abstract
Kandungan tesis ini memberikan tumpuan kepada penyediaan, sintesis dan pencirian komposit novel, iaitu bahan ‘Komposit Tak organik-Organik’ dengan sifat serta ciri yang telah dipertingkatkan. Getah asli terepoksida 50% (ENR-50) telah digunakan sebagai matriks polimer dan komposisinya bersama zirkonium (IV)-n-propoksida dan polianilin (Pani) telah dikaji. Pengikatan hidrogen yang telah menyumbang kepada pembentukan bahan komposit dapat dilihat melalui analisis kalorimetri dan pelbagai spektroskopi lain. Secara permulaannya filem hibrid ENR-50-zirkonia telah disintesis melalui kaedah sol-gel dengan mengubah kuantiti zirkonium (IV)-n-propoksida antara 10 hingga 50 wt%. Filem hibrid yang dihasilkan telah mempamerkan ketelusan optik yang sangat tinggi. Dengan penambahan 30 wt% zirkonium(IV)-n-propoksida, zarah-nano zirkonia telah diagihkan secara seragam dan homogen di dalam matriks ENR-50 dengan julat saiz zarah yang terdiri dari 50 hingga 70 nm. Bahan komposit baru dari ENR-50 dan Pani telah berjaya disediakan dengan menggunakan teknik tuangan pelarut.
The current thesis focuses on the synthesis and characterization of novel Inorganic-Organic Composites (IOCs) materials with enhanced properties. Epoxidized natural rubber (ENR-50) was used as the polymer matrix and its composition with zirconium (IV)-n-propoxide and polyaniline (Pani) was investigated. The hydrogen bonding which contributes to the formation of the composite materials was observed by calorimetric and various spectroscopic analyses. Initially, ENR-50-zirconia hybrid films were synthesized through the sol-gel route by varying the amount of zirconium (IV)-n-propoxide ranging from 10 to 50 wt%. The prepared hybrid films exhibited very high optical transparency. With 30 wt% zirconium (IV)-n-propoxide addition, zirconia nanoparticles were uniformly and homogeneously distributed to the ENR-50 matrix with the particle sizes ranging from 50 to 70 nm. New composite materials from ENR-50 and polyaniline were successfully prepared using the solvent casting technique.
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