Plasticorder mixing chamber

Photograph B. Plasticorder mixing chamber (electrically heated) and measuring... 

The Brabender Plasticorder is also a useful device for studying the effect of shear and heat on fully formed polymeric materials. And this is another way that we used it in the present study. The technique employed was to bring the Plasticorder mixing chamber to temperature, then add granules of thermoplastic polyurethane elastomer (at 25°C) to the chamber and record the viscosity-time-temperature pattern that developed. ... 

As can be seen in Figure 12 the Plasticorder mixing chamber was heated to 200°C, a temperature frequently applied in the... 

The Plasticorder, described as a "torque rheometer" by the supplier, is one version of a practical tool well known and used in the plastics and rubber industries. We believe that our use of the Plasticorder as a polymerization reactor may be unique, and that the instrument is probably not well known in polymer science laboratories, so we felt it appropriate to picture it. Additional detail of the mixing chamber/measuring head and the removable sigma blade rotors is also pictured (see Photographs A, B, and C). 

The supplier of the Plasticorder has provided the following approximate relationship, which is relevant to the present study in that it applies to a Plasticorder with a 120 ml mixing chamber with sigma blade rotors 15... 

Mastication studies of fully polymerized thermoplastic polyurethane elastomer were performed in the Plasticorder by adding polymer granules at room temperature to the preheated mixing chamber with the rotors in motion. 

Ternary blends of iPP(Moplen T 30 S, 300,000, Montecatini), PB-1 (PB 8340, 700,000, Shell), and HOCP (Escorez, 630, Esso Chemical) were prepared by melt processing in the 50 ml mixing room of a Brabender Plasticorder PEE 330 mixer at 60 rpm and 195°C for 15 min, dry nitrogen was continuously purged into the mixing chamber. Neat iPP and PB-1 processed under similar conditions were investigated as reference materials. The weight ratio of the blend components are reported in Table 6.10. 

Chemplex 1014 LDPE pellets (melt index 7) were charged into the mixing chamber of a Brabender Plasticorder which was preheated to 140 or 180 c and mixing at 60 rpm. After 2 min a 40 g charge of LDPE was molten. A mixture of MAH and BPO was added in 4 equal... 

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