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Preparation of coconut shell fiber grafted poly(butyl acrylate) using H2O2/FE2+ as an initiator

Yunos, Muhamad Zaini (2007) Preparation of coconut shell fiber grafted poly(butyl acrylate) using H2O2/FE2+ as an initiator. EngD thesis, Universiti Teknologi Malaysia.

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Abstract

Butyl acrylate (BA) was successfully grafted onto coconut shell (CCS) fiber using H2O2 /Fe2+ as initiator in aqueous medium under nitrogen gas atmosphere. The grafting was found to be dependent on the reaction temperature, reaction period, amounts of monomer, initiator and catalyst. The percentage of grafting increases with increasing amount of monomer. The optimum reaction temperature was determined to be about 50°C and the reaction period was 20 minutes. The optimum concentration of Fe2+ and H2O2 were 0.4 and 14.0 mmol respectively. The reaction mechanism of grafting butyl acrylate onto CCS fiber was proposed. The presence of strong peak around 1733 cm-1 in the FTIR of CCS-g-PBA provides strong evidence of grafting PBA on CCS. The effect of grafting on thermal properties was studied by thermogravimetry and showed that CCS-g-PBA posses higher thermal stability than ungrafted CCS.

Item Type:Thesis (EngD)
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Natural Resources Engineering (Formerly known)
ID Code:3568
Deposited By: Dr Abdul Razak Rahmat
Deposited On:11 Jun 2007 08:18
Last Modified:02 Oct 2012 09:49

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