Umar, Abdulganiyu and Abu Naim, Ahmedy and Sanagi, Mohd. Marsin (2014) Synthesis and characterization of chitosan grafted with polystyrene using ammonium persulfate initiator. Materials Letters, 124 . pp. 12-14. ISSN 0167-577X
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Official URL: https://doi.org/10.1016/j.matlet.2014.03.007
Abstract
Graft copolymerization of styrene from chitosan was prepared under various conditions using ammonium persulfate (APS) initiator. The grafting was found to be best at 1:3 chitosan:styrene weight ratio, 0.4 g APS and temperature 60 degrees C. The washed products were characterized by spectroscopic and thermal methods. FT-IR analysis indicate the presence of polystyrene peaks, DSC analysis showed the improvement in Tg of the polystyrene. After acid hydrolysis, the copolymer was analyzed using gel permeation chromatography (GPC), and the result revealed the isolated polystyrene having M-w and M-n, as 95,249 and 30,755 respectively, with polydispersity index, 2.92.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | polystyrene; ammonium persulfate, free-radical polymerization |
| Subjects: | Q Science |
| Divisions: | Science |
| ID Code: | 62767 |
| Deposited By: | Fazli Masari |
| Deposited On: | 14 Jun 2017 00:28 |
| Last Modified: | 14 Jun 2017 00:28 |
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