Type of Document	Dissertation
Author	Engen, Paul Todd
URN	etd-07282008-134515
Title	Novel polymer architectures :polyrotaxanes
Degree	PhD
Department	Chemistry
Advisory Committee	Advisor Name Title Gibson, Harry W. Committee Chair Riffle, Judy S. Committee Chair Bell, Harold M. Committee Member Ward, Thomas C. Committee Member Wilkes, Garth L. Committee Member
Keywords	Crown ethers
Date of Defense	1991-12-05
Availability	restricted
Abstract Although the synthesis of polymers with highly controlled molecular architectures has gained increased importance due to the rising demand for specialty polymers that possess novel properties, their physical characteristics are direct consequences of the size and constitution of the covalent structures of the polymer. Our program aims to prepare and characterize polymers, whose structures and properties are determined by non-covalent interactions. These novel polymer architectures are comprised of macrocycles threaded by linear macromolecules and are called polyrotaxanes. Polyrotaxanes are considered to be physical analogs of block or graft copolymers or molecular interpenetrating systems. The design and synthesis of the macrocyclic component, "blocking groups" to constrain the macrocycles and the polyrotaxane will be described.
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