Date of Award
Summer 8-2007
Degree Type
Dissertation
Degree Name
Doctor of Philosophy (PhD)
Department
Polymers and High Performance Materials
Committee Chair
Dr. Robson Storey
Committee Chair Department
Polymers and High Performance Materials
Committee Member 2
Dr. Kenneth Mauritz
Committee Member 3
Dr. Robert Moore
Committee Member 4
Dr. Charles McCormick
Committee Member 5
Dr. Jeffrey Wiggins
Abstract
This research pertains to the synthesis o f mikto-arm star polymers created via quasiliving cationic polymerization (QCP) and atom transfer radical polymerization (ATRP). The first part of this work focuses on the synthesis of cationic initiators that contain latent functionalities for initiation o f ATRP polymerizations.
In the second part of this work, well-defined copolymers o f polyisobutylene (PIB) and polystyrene (PS) were created by cationic polymerization. After transformation of the initiating site, poly(/c/7-butyl acrylate) (PtBA) was synthesized via ATRP. This block was later hydrolyzed to form poly(acrylic acid) (PAA), which serves as a hydrophilic segment of the material. The polymers had narrow PDIs and target polymer compositions. However, molecular weights were higher than expected when low molecular weight polymers were targeted. This is attributed to a complexation between the Lewis acid, titanium tetrachloride (TiC'L), and the carbonyl group in the initiators.
Copyright
2007, Lesli Krystin Breland
Recommended Citation
Breland, Lesli Krystin, "POLYISOBUTYLENE-BASED MIKTO-ARM STAR POLYMERS SYNTHESIZED VIA QUASILIVING CATIONIC POLYMERIZATION AND ATOM TRANSFER RADICAL POLYMERIZATION" (2007). Dissertations. 1272.
http://aquila.usm.edu/dissertations/1272