2023 Volume 59 Issue 2 Pages 34-40
Several kinds of maleic anhydride grafted polypropylene（PP-g-MA） were added as compatibilizers in Linear low-density polyethylene（LLDPE）/ polyamide 6（PA6）blends, which are the model blends of recycled multilayer film. Grafting amounts of maleic anhydride（MA）in the PP-g-MAs and PP-g-MA content in the LLDPE / PA6 / PP-g-MA ternary blends influenced morphology and mechanical properties. Size of PA6 particles in the LLDPE was minimized by the interaction between maleic anhydride（MA）group in the PP-g-MA and amide group of PA6. The most important factor which influences morphology and mechanical properties was the ratio of MA amount to PA6 amount in the blends. Impact strength was significantly improved by the PP-g-MA. On the other hand, tensile yield stress was a little improved and modulus was hardly changed by the PP-g-MA.
