Studies of Cu(II)-IO4− initiated graft copolymerization of methyl methacrylate from defatted pineapple leaf fibres
✍ Scribed by Tripathy, Pratap C; Misra, Manjusri; Parija, Sanghamitra; Mishra, Supriya; Mohanty, Amar K
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 278 KB
- Volume
- 48
- Category
- Article
- ISSN
- 0959-8103
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✦ Synopsis
A study of the graft copolymerization of methyl methacrylate (MMA) from defatted pineapple leaf ®bre (PALF) was carried out in the temperature range 45±55 °C, using a copper sulphate (CuSO 4 ) and potassium periodate (KIO 4 ) combination as initiator in an aqueous medium. Effects of variation of time and temperature, concentration of Cu(II), KIO 4 and MMA, the amount of PALF, and also the effects of some inorganic salts and organic solvents on the percentage of graft yield have been investigated. On the basis of experimental ®ndings, a reaction mechanism is proposed. FTIR spectroscopy, thermogravimetric analysis (TGA) and scanning electron microscopy of the original defatted PALF and MMA grafted PALF have been carried out. The thermal stability of PALF is improved through grafting.