Reliability of Intrinsic Viscosity Estimated by Single Point Procedure at High Concentrations
Reliability of Intrinsic Viscosity Estimated by Single Point Procedure at High Concentrations
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DOI：
10.1678/rheology.42.261
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发表时间：
2014-01-01
影响因子：
1.3
通讯作者：
Urakawa, Osamu
中科院分区：
文献类型：
--
作者：
Inoue, Tadashi;Oba, Naoto;Urakawa, Osamu
研究了一种从有限浓度下的粘度数据（即不向零浓度外推）计算固有粘度的简单计算方法，以阐明其适用性。方法[eta] = {2(eta(sp)-ln eta(r))}(1/2)/c，基于Huggins和Fuoss-Mead图。其中，eta（sp）和eta(r)分别为比粘度和相对粘度，c为浓度。用已发表的聚苯乙烯和聚（α -甲基苯乙烯）溶液粘度数据测试了其适用性。结果表明，该方法适用于浓度为c / c *的良好溶剂
A simple calculation method to evaluate intrinsic viscosity from viscosity data at a finite concentration (i.e. without the extrapolation to zero concentration) is examined to clarify its applicability. The method, [eta] = {2(eta(sp)-ln eta(r))}(1/2)/c, is based on Huggins and Fuoss-Mead plots. Here, eta(sp) and eta(r) are respectively specific viscosity and relative viscosity, and c is concentration. Its applicability was tested with published viscosity data for polystyrene and poly(alpha-methyl styrene) solutions. The method was found to work well for good solvents in the concentration regime c / c *