Title:
Rotaxanated Polymers: I. Synthesis and Purification of Cyclic Polydimethylsiloxane II. Synthesis of Poly[octene-pseudorotaxa-(a-cyclodextrin)]

Simple item page
dc.contributor.advisor Beckham, Haskell W.
dc.contributor.author White, Bryan M. en_US
dc.contributor.committeeMember Andrew Lyon
dc.contributor.committeeMember Collard, David M.
dc.contributor.committeeMember Laren Tolbert
dc.contributor.committeeMember Pete Ludovice
dc.contributor.department Chemistry and Biochemistry en_US
dc.date.accessioned 2005-03-03T21:47:29Z
dc.date.available 2005-03-03T21:47:29Z
dc.date.issued 2004-02-23 en_US
dc.description.abstract Polyrotaxanes possess a molecular architecture resembling that of a wheel and axle: linear polymer chains are threaded by cyclic molecules with no covalent bonds linking the two species. One of two methods can be employed for the preparation of polyrotaxanes: a template method to guide threading or an in situ polymerization of monomers in the presence of cyclic molecules. The research described in this dissertation was divided into two distinct sections, which were devoted to each method of polyrotaxane preparation. The first step of synthesizing polyrotaxanes via the in situ polymerization method was to prepare a cyclic molecule. α,Ï -Dihydroxy-PDMS was cyclized and then efficiently purified by an anion-exchange resin to remove uncyclized, yet anionically charged, linear PDMS. The second part of this dissertation included examining polyrotaxanes created by the template-directed threading of α-CD onto polyoctene (PO). End-capped PO, which was unthreadable by α-CD, was synthesized from 1,9-decadiene and a monovinyl bulky compound by acyclic diene metathesis. PO and ecPO each were sonicated in aqueous solutions of α -CD; PO formed a white precipitate indicative of a rotaxanated polymer, but no precipitate formed by the addition of ecPO. These results provided evidence that PO had been included within the cavity of α-CD. en_US
dc.description.degree Ph.D. en_US
dc.format.extent 2666095 bytes
dc.format.mimetype application/pdf
dc.identifier.uri http://hdl.handle.net/1853/5136
dc.language.iso en_US
dc.publisher Georgia Institute of Technology en_US
dc.subject Rotaxanes en_US
dc.subject Polyrotaxanes
dc.subject Polymers
dc.subject Siloxanes
dc.subject Cyclic
dc.title Rotaxanated Polymers: I. Synthesis and Purification of Cyclic Polydimethylsiloxane II. Synthesis of Poly[octene-pseudorotaxa-(a-cyclodextrin)] en_US
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.corporatename School of Chemistry and Biochemistry
local.contributor.corporatename College of Sciences
relation.isOrgUnitOfPublication f1725b93-3ab8-4c47-a4c3-3596c03d6f1e
relation.isOrgUnitOfPublication 85042be6-2d68-4e07-b384-e1f908fae48a
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
White_Bryan_M_200405_PhD.pdf
Size:
2.54 MB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Theses and Dissertations