Filled polymer master rheograms

Table Cl Details of data used for master rheograms of filled polymers in Figures 6.32-6.39 (Source Ch. 6 Refs [50] and [149]) ... 

The master rheograms for filled polymers have been given by Shenoy et al. [95] on a limited number of systems. These are for filled systems of LDPE, HOPE, PP, PS, Nyltm, PET, and PC using date from Refs. 33,44,59-61,65, %-102. The various filled polymer systems analyzed by them are summarized in Table BS of pendix B. 

In the case of extensional viscosity, unified curves have been presented for a limited number of cases and the data used for coalescence are also-limited. Because of the difficulties in measurement of extensional viscosity, the reliability of the data is often questionable. Because the original data cannot be as trustworthy as in the case of shear viscosity or complex viscoaty data, the master curves of extensional data should be looked at in the same light. In the case dt shear viscosify, the master rheograms for the filled polymers have been shown to be the same as those for the unfilled system. is, of course, true in the medium to high shear-rate region. In the low-shear-rate region, however, the effects of yield stress would dominate and the uniqueness of the curve will be... 

Table B5 Details of Data Used foi Master Rheograms of Filled Polymers... 

The fourth chapter begins with the origin and definition of MFI. It then develops the fundamentals of the unification technique based on a strong theoretical rationale. A demonstration of the use of this technique is followed by ample master rheograms of shear viscosity for a long list of common homopolymers, copolymers, blends, PVC formulations, and filled and recycled polymers. 

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