γ-ray Induced Admicellar Polymerization for Silica Surface Modification

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Narissara Yooprasert
King Mongkut's University of Technology North Bangkok, Bangkok 10800 Thailand
Salukjit Buathong
King Mongkut's University of Technology North Bangkok, Bangkok 10800 Thailand
Phiriyatorn Suwanmala
Thailand Institute of Nuclear Technology (Public Organization), Vibhavadi Rangsit Road, Chatuchak, Bangkok 10900 Thailand
Kasinee Hemvichian
Thailand Institute of Nuclear Technology (Public Organization), Vibhavadi Rangsit Road, Chatuchak, Bangkok 10900 Thailand
Gamolwan Tumcharern
National Nanotechnology Center, National Science and Technology Development Agency, Patumthanee 12120 Thailand
Thirawudh Pongprayoon
National Nanotechnology Center, National Science and Technology Development Agency, Patumthanee 12120 Thailand

Abstract

The objective of this study is to modify silica surface by radiation-induced admicellar polymerization.The experiment was carried out in the aqueous solution of cetyl trimetylammonium bromide (CTAB).Isoprene monomer was used for forming polyisoprene film inside the template of CTAB adsorbed on silicasurface. The amount of polyisoprene film formed on silica was analyzed by measuring the weight lossduring thermal degradation. The modified silica was also characterized by Fourier Transform InfraredSpectroscopy (FT-IR) and Scanning Electron Microscope (SEM). From the results, gamma radiation wasproved to be a more effective technique to induce admicellar polymerization, compared with thermalprocess, since this convenient technique requires no initiators, takes shorter time, yields more film formation.

Keywords : Modified Silica / Admicellar Polymerization / Gamma Radiation / Polyisoprene

Article Details

Issue
Vol. 32 No. 1 (2009): January - March
Section
Original Articles
Author Biographies

Narissara Yooprasert, King Mongkut's University of Technology North Bangkok, Bangkok 10800 Thailand

Graduate Student, Department of Chemical Engineering, Faculty of Engineering.

Salukjit Buathong, King Mongkut's University of Technology North Bangkok, Bangkok 10800 Thailand

Graduate Student, Department of Chemical Engineering, Faculty of Engineering.

Phiriyatorn Suwanmala, Thailand Institute of Nuclear Technology (Public Organization), Vibhavadi Rangsit Road, Chatuchak, Bangkok 10900 Thailand

Researcher, Research and Development Group.

Kasinee Hemvichian, Thailand Institute of Nuclear Technology (Public Organization), Vibhavadi Rangsit Road, Chatuchak, Bangkok 10900 Thailand

Researcher, Research and Development Group.

Gamolwan Tumcharern, National Nanotechnology Center, National Science and Technology Development Agency, Patumthanee 12120 Thailand

Researcher.

Thirawudh Pongprayoon, National Nanotechnology Center, National Science and Technology Development Agency, Patumthanee 12120 Thailand

Researcher.