Abstract
Rubber modified acrylics produce a good balance of physical properties when used alone in the injection and extrusion processes. However, because of the high cost and low modulus of these rubber particles, there is an increasing interest in blending rubberized particles with rigid acrylics during the processing stage. Since these particles are surrounded by an acrylic layer, the blending is to achieve good mixing between acrylic and acrylic phases without destroying the rubber domain. The purpose of this work is to study the processibility of several rubber-modified acrylic blends. The polymers used in this study were a rigid poly(methyl methacrylate), designated as PA, and two rubber-modified acrylics, designated as RR and JR. The data showed that both block copolymers had similar shear viscosities, yet the PA-JR pair showed very poor dispersion during extrusion while the PA-RR pair showed a much better dispersion in extrusion.
| Original language | English |
|---|---|
| Pages | 751-755 |
| Number of pages | 5 |
| State | Published - 1984 |