The graft copolymer amylose‐g‐poly (styrene) was prepared by Fe 2+ ‐H 2 O 2 initiation method. Thermal analyses of grafted samples having different styrene content have been carried out in nitrogen atmosphere. Thermal stability of amylose has been found to increase when it is grafted. Chatterjee and Freeman‐Anderson methods have been applied to TG‐data (Thermogravimetric Data). TG showed that degradation occurred through two distinct steps. DTA (Differential Thermal Analysis) of all samples having different degrees of grafting indicated that graft copolymers decompose before melting. From the DSC (Differential Scanning Calorimeter) study it is revealed that TG of graft copolymers is independent of the degree of grafting.
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Gohil et al. (1976) studied this question.
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