Abstract
In this short communication, two methods were shown for evaluating the homo-polymer number-average molecular weight (MWN), weight-average molecular weight (MWW), and poly dispersity index (PDI). The goal is to exemplify the cumbersome mathematical portray which heavily relies on the zeroth, first, and second moment frequency distribution of homo-polymer chains in a typical chain reaction and transform the portray into a more simplified version that simply relies on statistical parameters, namely, the mean and variance of a sample.

Keywords
Number Average Molecular Weight; Weight Average Molecular Weight; Polymer; Polymerization; Exemplification; Poly Dispersity Index; Chemical Engineering Education

Cite this paper
Kamal I. Al-Malah, Exemplification of Homo-Polymer Average Chain Length and Weight Properties , SCIREA Journal of Chemical Engineering. Volume 2, Issue 2, April 2017 | PP. 10-16.

References

[ 1 ]	Al-Malah, K. “Exemplification of the Concept of Diffusivity in Mass Transfer”, International Journal of Chemical Engineering and Applied Sciences, 2(4): 24-26 (2012). http://urpjournals.com/tocjnls/9_12v2i4_1.pdf.
[ 2 ]	Al-Malah, K. “Exemplification of a Semi-Infinite vs. Finite Medium in Heat/Mass Transfer”. Chemical Engineering & Process Techniques, 2(1): 1021 (2014). http://www.jscimedcentral.com/ChemicalEngineering/chemicalengineering-2-1021.pdf
[ 3 ]	Winnik, F. M. “Elements of Polymer Science”, in (editors: E. D. Goddard and J. V. Gruber). Principles of Polymer Science and Technology in Cosmetics and Personal Care. (pp. 1-50). Marcel Dekker, Inc. New York (1999).
[ 4 ]	Peebles, L. H. “Molecular Weight Distributions in Polymers”, in (editors: H. F. Franke and E. H. Immergut). Polymer Reviews. John Wiley & Sons Inc. (Wiley-Interscience), 1st edition (April 1971). New York, USA. ISBN-10: 0471677108. ISBN-13: 978-0471677109.
[ 5 ]	Slade, P. E. “Polymer Molecular Weights, (Part 1) (Techniques and Methods of Polymer Evaluation)”. (pp. 1-8). Marcel Dekker, Inc. New York (1975). ISBN-10: 0824762274. ISBN-13: 978-0824762278.
[ 6 ]	Meira, G.R. and H.M. Oliva. “Molecular weight distributions in ideal polymerization reactors. An introductory review”. Lat. Am. appl. res. Vol.41 No.4 Bahía Blanca Oct. (2011). ISSN 0327-0793.