Synthesis and Characterization of Novel Polymethylene-Based 3-Miktoarm Star Copolymers by Combining Polyhomologation with Other Living Polymerizations
Type
ThesisAuthors
Altaher, Maryam
Advisors
Hadjichristidis, Nikos
Committee members
Eddaoudi, Mohamed
Khashab, Niveen M.

Program
Chemical ScienceKAUST Department
Physical Science and Engineering (PSE) DivisionDate
2015-05Embargo End Date
2016-05-31Permanent link to this record
http://hdl.handle.net/10754/556240
Metadata
Show full item recordAccess Restrictions
At the time of archiving, the student author of this thesis opted to temporarily restrict access to it. The full text of this thesis became available to the public after the expiration of the embargo on 2016-05-31.Abstract
Polyethylene (PE) is produced in a huge scale globally and has plenty of desirable properties. It is used in coating, packaging, and artificial joint replacements. The growing need for high performance polyethylene led to the development of new catalysts, monomers and polymerizations. The synthesis of polymethylene (equivalent to polyethylene) by living polyhomologation opened the way to well-defined polymethylenes-based polymeric materials with controlled structure, molecular weight and narrow polydispersity. Such model polymers are substantial to study the structure-properties relationships. This research presents a new strategy based on the in situ formation of B-thexyl-silaboracyclic serving as initiating sites for the polyhomologation of dimethylsulfoxonium methylide. Combination with metal-free ring-opening polymerization (ROP) of ɛ-caprolactone (CL) and atom transfer radical polymerization (ATRP) of styrene led to three polymethylene-based 3-miktoarm stars copolymers PCL(PM-OH)2, Br-PCL(PM-OH)2 and PS(PM-OH)2.Citation
Altaher, M. (2015). Synthesis and Characterization of Novel Polymethylene-Based 3-Miktoarm Star Copolymers by Combining Polyhomologation with Other Living Polymerizations. KAUST Research Repository. https://doi.org/10.25781/KAUST-9B5L4ae974a485f413a2113503eed53cd6c53
10.25781/KAUST-9B5L4