Jump to main content
Jump to site search

Issue 75, 2016
Previous Article Next Article

Utilising alternative modifications of α-olefin end groups to synthesise amphiphilic block copolymers

Author affiliations

Abstract

Amphiphilic block copolymers comprised of polyisobutylene (PIB) and poly(2-(dimethylamino)ethyl methacrylate) (DMAEMA) have been synthesised. This has been achieved via two new synthetic processes. Firstly, a PIB macroinitiator was synthesised from PIB that is primarily terminated by an α-olefin, hydroboration/oxidation of the terminal α-olefin followed by esterification with α-bromoisobutyryl bromide furnished the desired macroinitiator. The PIB macroinitiator was then utilised to polymerise DMAEMA by SET-LRP at different block lengths of PDMAEMA. However, end fidelity of the PIB macroinitiator was low (60%) and as such synthesising a block of PDMAEMA with a predictable degree of polymerisation was not possible. PIB-b-PDMAEMA block copolymers were also synthesised by reactive coupling of functional homopolymers, primary amine terminated PDMAEMA and polyisobutenyl succinic anhydride (PIBSA). Variable molecular weight well-defined PDMAEMA was synthesised by SET-LRP using an azide bearing initiator followed by transformation of the azide end group to a primary amine. All primary amine functionalised PDMAEMA was then coupled with PIBSA to synthesise PIB-b-PDMAEMA, demonstrated by GPC. However, the capabilities of this synthetic approach was limited as more than one PDMAEMA may couple to the PIBSA, therefore not synthesising pure PIB-b-PDMAEMA copolymers.

Graphical abstract: Utilising alternative modifications of α-olefin end groups to synthesise amphiphilic block copolymers

Back to tab navigation

Supplementary files

Publication details

The article was received on 13 Jun 2016, accepted on 22 Jul 2016 and first published on 22 Jul 2016


Article type: Paper
DOI: 10.1039/C6RA15346A
Citation: RSC Adv., 2016,6, 71773-71780
  • Open access: Creative Commons BY license
  •   Request permissions

    Utilising alternative modifications of α-olefin end groups to synthesise amphiphilic block copolymers

    E. L. Malins, C. Waterson and C. R. Becer, RSC Adv., 2016, 6, 71773
    DOI: 10.1039/C6RA15346A

    This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements