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判斷題
For a polymer, the viscosity-average molecular mass is larger than its weight-average molecular mass。
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For polymer blends with a UCST diagram, phase separation will take place when temperature is below the UCST at any composition。
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Based on Avrami equation, when polymer forms spherulites (three-dimensional growth of the crystals) with a heterogeneous nucleation mechanism, the Avrami exponent (n) should be 3。
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