Microstructures and Mechanical Properties of Poly(Trimethylene Terephthalate)/Maleic Anhydride Grafted Poly(Ethylene-octene)/Polypropylene Blends |
| |
| Authors: | Kunyan Wang Yanmo Chen |
| |
| Affiliation: | 1. School of Life Science , Huzhou Teachers College , Huzhou, P. R. China;2. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering , Donghua University , Shanghai, P. R. China |
| |
| Abstract: | A range of blends based on 70 wt% of poly(trimethylene terephthalate) PTT with 30 wt% dispersed phase were produced via melt blending. The dispersed phase composition was varied from pure maleic anhydride grafted poly(ethylene-octene) (POE-g-MA) over a range of POE-g-MA:polypropylene (PP) ratios. The micromorphology and mechanical properties of the ternary blends were investigated. The results indicated that the domains of the POE-g-MA are dispersed in the PTT matrix, and at the same time the POE-g-MA encapsulate the PP domains. The interfacial reaction between the hydroxyl-end group of PTT and maleic anhydride (MA) during melt blending changes the formation from “isolated formation” to “capsule formation,” where the PP domains are encapsulated by POE-g-MA. Compared to the PTT/POE-g-MA blends, mechanical properties of ternary blends, such as tensile strength and Young's modulus, were improved significantly. |
| |
| Keywords: | capsule formation maleic anhydride grafted poly(ethylene-octene) (POE-g-MA) poly(trimethylene terephthalate) (PTT) polypropylene (PP) |
|
|
