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A simple and efficient SEC/GPC linear calibration technique using broad‐range standards
Author(s) -
Nwankwo Emeka O.,
Abbott Scot D.
Publication year - 1995
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1995.070580122
Subject(s) - simple (philosophy) , calibration , range (aeronautics) , sine , gaussian , convergence (economics) , exponential function , trigonometric functions , mathematics , algorithm , mathematical analysis , physics , statistics , materials science , geometry , philosophy , epistemology , quantum mechanics , economics , composite material , economic growth
A simple method for calibrating high‐performance SEC/GPC systems is presented. This technique sequentially finds the correct slope, D 2 , by tracking the calculated polydisperity, P , using arbitrary calibration slopes from which the intercept, D 1 , is ultimately back‐calculated. The case of application and relative efficiency of this search technique are highlighted and discussed. Theoretical justification of the simple form of the convergence equation is presented using two distribution models—the Gaussian (pseudo‐Flory) and the sine (cosine) exponential models. © 1995 John Wiley & Sons, Inc.