Evaluation and characterization of vector fluids and peroxides in a process of in situ compatibilization of polyethylene and polystyrene |
| |
Authors: | Yi-Jun Sun Vicki Flars Warren E Baker |
| |
Abstract: | An organic functional silane was found to be the most efficient among several vector fluids in reactive blend compatibilization of the polyethylene (PE) / polystyrene (PS) / peroxide / vector fluid system. This paper involves further analysis of this reactive blending system. Surface tension data was used to calculate spreading coefficients which were compared to the amount of PE-PS copolymer formed during blending. A good correlation between a computed spreading coefficient and the degree of grafting of PS onto PE was found. The results suggest that the pattern of distribution of the vector fluid in PE / PS blends is the key factor leading to effective results. Furthermore, different peroxides were evaluated in PE / PS blends, in order to determine the dependence of PE / PS interfacial grafting reaction on the structure of the peroxide. |
| |
Keywords: | vector fluid in situ compatibilization polyolefin polymer blend peroxide |
|