The non-isothermal crystallization kinetics of glass oil palm reinforced hybrid phenol formaldehyde composites has been studied at different heating rates by using Differential Scanning Calorimeter (DSC). Samples of different weight percentages of fibres have been tested and the results are analyzed in the light of Ozawa's theory. It has been found that all the samples studied follow the above theory very well and, therefore, it has been employed to determine the Avrami exponent for these composites under non-isothermal conditions.
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