Polymeric Materials - Part II. Learning Resources. www.msm,cam.ac.uk/ University of Cambridge Department of Materials Science and Metallurgy Teaching: DoITPoMS Project Library of Teaching and Learning Packages for Materials Science www.msm.cam.ac.uk/doitpoms/tlplib/index.php
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Classification based on Processing
All these properties determine the diverse states of macromolecular aggregation that polymers show.
Interchain bonding: covalent
The Number Average Molecular Weight, Mn
The Weight Average Molecular Weight, Mw
Where N is the number of moles in the sample with mass M, and N*M is the mass of the sample.
1. Number Average Molecular Weight (Mn) ester dimer
2. Weight Average Molecular Weight (Mw)
Polydispersity = Mw/Mn
The branching increases the volume and thus reduces the density of the polymer.