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HOW TO MEASURE THE DEGRADATION INDEX BY VISCOMETRY

机译:如何通过VISCOMETRY测量降解指数

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To calculate the degradation index (DI) from the intrinsic viscosity changes, a simple and accurate enough equation has been proposed: DI = {([eta](0)/[eta])(1/alpha) - 1}/(0.57 X P-w0 - 0.14), with P-w0 being the initial polydispersity index: P-w0 = M(w0)/M(n0). The inaccuracy of the DI determination caused by the experimental inaccuracy of intrinsic viscosity measurements was evaluated to be larger at low values of the Mark-Houwink exponent. The determination is more accurate when the initial MWD is broad. (C) 1996 John Wiley & Sons, Inc. [References: 8]
机译:为了从特性粘度变化计算降解指数(DI),提出了一个简单而精确的方程:DI = {((η(0)/η)(1 / alpha)-1} /(0.57) X P-w0-0.14),其中P-w0为初始多分散指数:P-w0 = M(w0)/ M(n0)。在低马克-霍温克指数下,由特性粘度测量的实验误差引起的DI测定误差被评估为较大。当初始MWD较宽时,该确定会更准确。 (C)1996 John Wiley&Sons,Inc. [参考:8]

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