Dynamic mechanical and thermal analysis of reactive poly (butadiene-co-acrylonitrile) rubber-modified polybenzoxazine resin

An amine-terminated butadiene-acrylonitrile copolymer (ATBAN) was introduced to polybenzoxazine by the modification of monomer prior to curing. After the thermally induced ring-opening reaction, a mixture of two network structures was formed. Dynamic mechanical analysis (DMA) was used to study the relaxation behaviour in different temperature regions and thermal properties of the modified system were examined by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA).