A polymer's structure influences its physical properties. Describe two structural variations that are possible for polypropylene but not for polyethylene. : Polymer Chemistry
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Answer / Megha Vishnoi
Two structural variations that can occur in polypropylene but not in polyethylene are: Isotactic, syndiotactic, and atactic structures. While both polypropylene and polyethylene can be isotactic or atactic, only polypropylene can have a syndiotactic structure due to its more complex molecule structure. Another variation is the presence of branches and side chains, which can differ between the two polymers. For example, polypropylene often has methyl side groups that branch off the main chain.
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