Series of PVC/ABS and PVC/SBS blends of composition 20/ 80. 40/ 60, 60 / 40 and 80 / 20were prepared in a screw extruder. The phase morphology, miscibility and rheological behaviour of two systems were investigated. T...Series of PVC/ABS and PVC/SBS blends of composition 20/ 80. 40/ 60, 60 / 40 and 80 / 20were prepared in a screw extruder. The phase morphology, miscibility and rheological behaviour of two systems were investigated. The viscosity-composition plots were represented by sub-cluster equation, the various differences between two systems are interpreted with the equation parameters展开更多
The surface morphology of free-surface PCL ringed spherulites was investigated by using atomic force microscopy. The spherulites were obtained by crystallization of PCL/PVC blends of different compositions. It was fou...The surface morphology of free-surface PCL ringed spherulites was investigated by using atomic force microscopy. The spherulites were obtained by crystallization of PCL/PVC blends of different compositions. It was found that the ringed spherulite exhibited regularly fluctuating rings on its surface. Compared with the bright-dark ring pattern of the spherulite under a polarizing microscope, it was proved that the optical characteristics of the ringed spherulite under polarizing microscope coincided with its surface characteristics. The bright rings in polarizing micrographs of the spherulite coincided with the convex rings on its surface, while the dark rings coincided with the concave rings.展开更多
It has been reported that compatibilizer or crosslinking agent can improve the compatibilization of PVC/PE blends. And we have found that the mechanical properties of poly(vinyl chloride) (PVC)/low density polyethylen...It has been reported that compatibilizer or crosslinking agent can improve the compatibilization of PVC/PE blends. And we have found that the mechanical properties of poly(vinyl chloride) (PVC)/low density polyethylene (LDPE) blends were dramatically improved by compatibilization together with crosslinking. According to these,the compatibilization-crosslinking synergism was proposed. This letter reports the influ-展开更多
文摘Series of PVC/ABS and PVC/SBS blends of composition 20/ 80. 40/ 60, 60 / 40 and 80 / 20were prepared in a screw extruder. The phase morphology, miscibility and rheological behaviour of two systems were investigated. The viscosity-composition plots were represented by sub-cluster equation, the various differences between two systems are interpreted with the equation parameters
基金This work was supported by The National Natural Science Foundation of China and also The State Science and Technology Commission of China under The National Key Project for Fundamental Research "Macromolecular Condensed State".
文摘The surface morphology of free-surface PCL ringed spherulites was investigated by using atomic force microscopy. The spherulites were obtained by crystallization of PCL/PVC blends of different compositions. It was found that the ringed spherulite exhibited regularly fluctuating rings on its surface. Compared with the bright-dark ring pattern of the spherulite under a polarizing microscope, it was proved that the optical characteristics of the ringed spherulite under polarizing microscope coincided with its surface characteristics. The bright rings in polarizing micrographs of the spherulite coincided with the convex rings on its surface, while the dark rings coincided with the concave rings.
基金Project supported by the National Natural Science Foundation of China.
文摘It has been reported that compatibilizer or crosslinking agent can improve the compatibilization of PVC/PE blends. And we have found that the mechanical properties of poly(vinyl chloride) (PVC)/low density polyethylene (LDPE) blends were dramatically improved by compatibilization together with crosslinking. According to these,the compatibilization-crosslinking synergism was proposed. This letter reports the influ-
