Lecture 29: Structure-property Relationships in Polymers, Crystalline Polymers
recorded by: Massachusetts Institute of Technology, MIT
published: Feb. 10, 2009, recorded: November 2004, views: 1862
released under terms of: Creative Commons Attribution Non-Commercial Share Alike (CC-BY-NC-SA)
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"So, last day we started talking about polymers, macromolecules. These are chemicals that have a very high molecular weight with a repeating chemical structure. I've given an example here of vinyl chloride as the individual molecule.
And, by addition polymerization, we can break the double bond, have it propagate, and we end up with something which is the polyvinyl chloride. N numbers can be very large, and we can get molecular weights in the vicinity of 1,000,000 grams per mole.
We further looked at tailoring properties by control of molecular architecture. We saw that we could look at bulk composition and form such things as copolymers, which are to polymers what alloys are to metals..."
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