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1. A rubber band, made of a styrene-butadiene random copolymer, is swollen to equilibrium in toluene resulting in a 5 -fold increase in its volume.

1. A rubber band, made of a styrene-butadiene random copolymer, is swollen to equilibrium in toluene resulting in a 5 -fold increase in its volume. Taking 0.4, estimate the number of strands per unit volume. Estimate the modulus of the dry and swollen polymer network

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