AN IMPROVED METHOD OF CALCULATING COPOLYMERIZATION REACTIVITY RATIOS
AN IMPROVED METHOD OF CALCULATING COPOLYMERIZATION REACTIVITY RATIOS
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DOI：
10.1002/pol.1965.100030137
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发表时间：
1965-01-01
期刊：
影响因子：
--
通讯作者：
MORTIMER, GA
中科院分区：
文献类型：
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作者：
TIDWELL, PW;MORTIMER, GA
用非线性最小二乘方法求解了共聚反应比。这种新方法在以下方面优于迄今为止使用的所有其他方法：(1)获得的唯一一对值不依赖于检查数据的人的判断；(2)这对值可以用数学方法表示为从现有数据中获得的最佳值对；(3)用有意义的术语对误差进行定量定义；(4)对数据进行检查，以确定它们与共聚物方程的拟合程度。解释了选择实验条件的基础，这些实验条件将提供可以获得反应性比精确值的数据，并以表格形式列出了在r1，r2值的广泛范围内获得这些精确值的实验条件。
A nonlinear least‐squares method for solving forr1andr2the copolymerization reactivity ratios, is explained. This new method is superior to all other methods that have been used heretofore in the following ways: (1) a unique pair of values is obtained which does not depend on the judgment of the person examining the data; (2) this pair of values can be shown mathematically to be the best pair obtainable from the data at hand; (3) the errors are quantitatively defined in meaningful terms: and (4) the data are checked to see how well they fit the copolymer equation. A basis for selecting experimental conditions which will provide data from which precise values of the reactivity ratios can be obtained is explained, and experimental conditions appropriate for obtaining these precise values over a wide range ofr1,r2values are presented in tabular form.