Study on Properties of PVC Blended with Emulsion Copolymer of N-p-tolylmaleimide and Methyl Methacrylate |
| |
| Authors: | Liting Yang Yanhong Liu |
| |
| Affiliation: | 1. School of Chemistry and Environment, South China Normal University , Guangzhou, P.R. China;2. College of Chemistry and Environmental Science, Hebei University , Baoding, P.R. China yanglt@scnu.edu.cn;4. College of Chemistry and Environmental Science, Hebei University , Baoding, P.R. China |
| |
| Abstract: | Copolymers of N-p-tolylmaleimide (NPTMI) and methyl methacrylate (MMA) were synthesized by semi-batch emulsion polymerization. The thermal properties of copolymers and poly (vinyl chloride) (PVC) blended with copolymers had been investigated by thermogravimotric analysis (TGA), torsional braid analysis (TBA) and Vicat softening temperature tester. The results show that the glass transition temperature (T g) and Vicat softening temperature (T Vicat) of copolymers increase with increasing NPTMI feed content. The initial decomposition temperature (T ini) and the temperature where the residual weight reached 50% (T 50) also increase with increasing NPTMI feed content. The T g and T Vicat of the blends increase with increasing copolymer feed content. The mechanical properties and rheological behavior were also determined. The results show that the tensile strength of the blendes increase with increasing copolymer feed content while the impact strength keep at the same level. The reheological result illustrated that the blends in melt showed rheological behavior similar to that of pseudoplastic liquid. The apparent viscosity of blends in melt increase with increasing copolymer feed content. The compatibility of the blend system was also investigated by TBA and scanning electro micrograph (SEM). |
| |
| Keywords: | Blends Mechanical properties NPTMI PVC Rheological behavior Thermal Properties |
|
|
