Abstract
Surface roughness and sharkskin of extruded polymers, including blends are affected by the morphology and processing conditions. In this study, different effects on the roughness of the polymer blend extrudates were investigated. Co-continuous poly(ethylene) oxide/ethylene-vinyl acetate (PEO/EVA) blends with three different molecular weight (Mw) PEOs were compounded successfully. It was found that the better co-continuity of the structure and smoother surface were achieved for lower Mw PEO/EVA blend because of more effective stress transfer in the PEO phase. The effect of processing temperature was also studied with decreasing processing temperature reducing the surface roughness of the high Mw PEO/EVA blend, which was also achieved as a result of improved co-continuous morphology by adjusting the viscosity and elasticity ratio with shifting temperatures.
Acknowledgments
The authors acknowledge Dow Chemical and Dupont for providing PEO and EVA samples.
Conflict of interest statement: The authors declare to have no conflict of interests.
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Supplementary Material
The online version of this article offers supplementary material (https://doi.org/10.1515/polyeng-2019-0238).
©2019 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Editorial
- Special issue: Polymer engineering rheology
- Material properties
- Volume fraction and width of ribbon-like crystallites control the rubbery modulus of segmented block copolymers
- Influence of trisilanol isooctyl POSS content on the structure, morphology and rheological properties of thermoplastic polyurethane (TPU)
- Engineering and processing
- Oscillating shear capillary rheometry (OSCAR) for polymer melts
- Plastic drawing response in the biaxially oriented polypropylene (BOPP) process: polymer structure and film casting effects
- A quantitative study on using digital photoelasticity for characterising the effect of the stretching speed on the necking phenomenon
- Effects of structure and processing on the surface roughness of extruded co-continuous poly(ethylene) oxide/ethylene-vinyl acetate blends
- Processability predictions for mechanically recycled blends of linear polymers
- Prediction of the maximum flow length of a thin injection molded part
Artikel in diesem Heft
- Frontmatter
- Editorial
- Special issue: Polymer engineering rheology
- Material properties
- Volume fraction and width of ribbon-like crystallites control the rubbery modulus of segmented block copolymers
- Influence of trisilanol isooctyl POSS content on the structure, morphology and rheological properties of thermoplastic polyurethane (TPU)
- Engineering and processing
- Oscillating shear capillary rheometry (OSCAR) for polymer melts
- Plastic drawing response in the biaxially oriented polypropylene (BOPP) process: polymer structure and film casting effects
- A quantitative study on using digital photoelasticity for characterising the effect of the stretching speed on the necking phenomenon
- Effects of structure and processing on the surface roughness of extruded co-continuous poly(ethylene) oxide/ethylene-vinyl acetate blends
- Processability predictions for mechanically recycled blends of linear polymers
- Prediction of the maximum flow length of a thin injection molded part