| 초록 |
Thermoplastic elastomers (TPEs) are increasingly used in wide range of applications owing to their soft elastomeric property, melt processibility, and recyclability, and many attempts are made to develop TPEs with superior performance and specific functionalities. In this study, a new functional TPE is developed by melt blending of maleated ethylene vinyl acetate (mEVA) with a low degree of crystallinity and sulfonated polyaniline (sPANI). Molau test, SEM, FT-IR, DSC, DMA, and tensile test were conducted to characterize the structure and properties of the blends. The results revealed that the blends form a phase-separated structure and sPANI is grafted onto mEVA via a reaction between maleic anhydride of mEVA with amine of sPANI. The blends behave like a thermoplastic elastomer when the sPANI forms a dispersed phase. It was also observed that the blends show shape memory and crack repairing effect under thermal stimulation. |
