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4.2 Three polypropylene polymer with different volume fractions of rubber particles were tested for yield stress measurements at 20C. The yield stress y as
4.2 Three polypropylene polymer with different volume fractions of rubber particles were tested for yield stress measurements at 20C. The yield stress y as a function of and were given in the table below. Calculate V* for each polymer and suggest why V* varies with . (S-1) =0 =0.1 Q=0.2 10-5 10-3 23.1 30.2 19.7 24.9 15.5 19.7
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