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Title: Crystallisation driven self-assembly study of polyester based triblock copolymers
Author: Yu, Wei
Awarding Body: University of Warwick
Current Institution: University of Warwick
Date of Award: 2019
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Chapter 1 gives the introduction of the main concepts and techniques throughout this thesis. Chapter 2 describes the control over the morphology of various poly(N,N-dimethylacrylamide)-poly(L-lactide)-b-poly(N,N-dimethylacrylamide) micelles based on crystallisation driven self-assembly. Such change of the shapes was realized by tuning the composition of the triblock copolymers, when solubility-based shape selectivity mechanism was proposed to explain. Chapter 3 expands the scope of the crystallization-driven self-assembly of PLLA-based ABA type copolymers using different hydrophilic corona-forming blocks. Besides, by taking advantage of crystalline properties of the PLLA segments, monodisperse 1D cylinders with varying length were prepared. Chapter 4 intend to trigger the morphological transition of the PLLA based terpolymers cylindrical micelles under physiological condition with the addition of enantiomer assemblies. According to the “unimer-assembly exchanging” theory, it was proved the block composition and polymer solubility played a vital role in the transition process. Chapter 5 employs the use of poly(ɛ-caprolactone) crystallisable core-forming block for the preparation of 1D cylindrical structures of controlled length and dispersity. The effect of the polymer composition on the assembly morphology and size was also studied in detail.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: QD Chemistry