Solvent-dependent self-assembly behaviour of block copolymers having side-chain amino acid and fatty acid block segments

Reversible addition–fragmentation chain-transfer (RAFT) polymerization has been used for the controlled synthesis of block copolymers containing side-chain fatty acid and amino acid block segments, namely, poly(2-(methacryloyloxy)ethyl stearate)-block-poly(tert-butyloxycarbonyl phenylalanine methacr...

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Bibliographic Details
Published in:Reactive & functional polymers 2016-02, Vol.99, p.26-34
Main Authors: Jena, Sudhansu Sekhar, Roy, Saswati Ghosh, Azmeera, Venkanna, De, Priyadarsi
Format: Article
Language:English
Subjects:
Addition polymerization
Amino acid
Amino acids
Block copolymer
Block copolymers
Fatty acid
Fatty acids
Methyl alcohol
Polymerization
Reversible addition–fragmentation chain-transfer (RAFT) polymerization
Segments
Self assembly
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Summary:Reversible addition–fragmentation chain-transfer (RAFT) polymerization has been used for the controlled synthesis of block copolymers containing side-chain fatty acid and amino acid block segments, namely, poly(2-(methacryloyloxy)ethyl stearate)-block-poly(tert-butyloxycarbonyl phenylalanine methacryloyloxyethyl ester) (PSAMA-b-P(Boc-Phe-HEMA)) with fixed PSAMA block length and variable block lengths of P(Boc-Phe-HEMA). Because of different solubilities of PSAMA and P(Boc-Phe-HEMA) segments in various organic solvents, PSAMA-b-P(Boc-Phe-HEMA) formed a micellar morphology with PSAMA core and P(Boc-Phe-HEMA) coronas in N,N-dimethylformamide, dimethyl sulphoxide and acetonitrile. Upon deprotection of Boc groups, the block copolymers can undergo transformation to amphiphilic block copolymers, which showed interesting self-assembly in methanol and water. [Display omitted]
ISSN:1381-5148
DOI:10.1016/j.reactfunctpolym.2015.12.004