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Q3. A single crystal of polyethylene (PE) weighing 9.6mg is found to have an enthalpy of melting of 2.65J, while a 6.8mg commercial polyblend containing

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Q3. A single crystal of polyethylene (PE) weighing 9.6mg is found to have an enthalpy of melting of 2.65J, while a 6.8mg commercial polyblend containing 75wt%PE based on the total weight is found to have an enthalpy of melting of 1.10J for PE. Calculate the percentage crystallinity of the polymer in the commercial polyblend

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