Thermal Property and Rheology Property of PHB and Its Modification

The thermal property of PHB and its modification was analyzed by TG/DTA.The rheology property of PHB was researched.The effect of talcum powder,calcium carbonate,DOP on the rheology property of PHB were investigated.The result showed that the viscosity of PHB declined rapidly with the increasing of shear rate.The addition of DOP could depress the melting point of PHB and slow the phenomena of shear thinning of PHB dramatically.Talcum powder could slow the phenomena of their shear thinning slightly.