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Anhydride/epoxy functionalized blends: Mechanical, rheological and thermal properties
Date
2001-11-30
Author
Bayram, G
Yılmazer, Ülkü
Metadata
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Blends of styrene-maleic anhydride (SMAH) and polyethylene-methyl acrylate-glycidyl methacrylate (E-MA-GMA) were produced in a batch mixer and in a corotating twin screw extruder. E-MA-GMA concentration was varied from 0% to 50%. Batch mixing indicated that the blend system was reactive. Extruded blends were characterized in terms of rheological, thermal and mechanical properties, and their morphology was observed. Rheological properties such as the storage modulus, loss modulus and complex viscosity exhibited maxima at 25% EMA-GMA content. The blends had fine morphology as observed by scanning electron microscopy. Thermal properties were not significantly affected by the change in epoxy concentration. As E-MA-GMA concentration increased, tensile strength and modulus of elasticity decreased, but percent strain at break increased. These observations could be explained in terms of the chain extension/branching reactions that occurred in mixing the blends.
Subject Keywords
Reactive extrusion
,
Compatibilization
URI
https://hdl.handle.net/11511/53478
Conference Name
Symposium on Advanced Fibers, Plastics, Laminates and Composites held at the 2001 MRS Fall Meeting
Collections
Graduate School of Natural and Applied Sciences, Conference / Seminar
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The reaction of styrene-maleic anhydride (SMA) with polyethylene/methyl acrylate/glycidyl methacrylate (E-MA-GMA) was studied in a batch mixer and in a corotating twin screw extruder. Also, the mixing of a nonreactive blend of SMA with polyethylene/methyl acrylate (E-MA), with similar rheological properties to E-MAG-MA, was studied under the same processing conditions. The mixing products of reactive and nonreactive systems exhibited drastically different properties. Reactive blends showed higher tensile mo...
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G. Bayram and Ü. Yılmazer, “Anhydride/epoxy functionalized blends: Mechanical, rheological and thermal properties,” BOSTON, MA, 2001, vol. 702, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/53478.
