Please use this identifier to cite or link to this item:
http://hdl.handle.net/1942/37628
Title: | The effects of molecular weight dispersity on block copolymer self-assembly | Authors: | Buckinx, Axel-Laurenz RUBENS, Maarten Cameron, Neil R. Bakkali-Hassani, Camille Sokolova, Anna JUNKERS, Tanja |
Issue Date: | 2022 | Publisher: | ROYAL SOC CHEMISTRY | Source: | Polymer chemistry (Print), 13 (23) , p. 3444 -3450 | Abstract: | The influence of dispersity in the molecular weight distributions in the core forming block for block copolymer (BCP) self-assembly is analyzed via an automated flow synthesis approach. Polystyrenes with increasing dispersity in the core forming block are synthesized from reversible addition-fragmentation chain transfer (RAFT) polymerization with an average degree of polymerization (DPn) of 15 and 50 and dispersities between 1.10 and 1.45. After chain extension of these polymers with hydroxy ethyl acrylate, the residual BCPs were subjected to nanoaggregate formation via continuous flow mixing. Nanoaggregates were carefully analyzed with an ensemble of dynamic light scattering (DLS), scanning transmission electron microscopy (STEM) and small angle neutron scattering (SANS). With an increase in the dispersity of the core forming polymer block, the overall dispersity of the nanoparticles was reduced, demonstrating that lower polymer dispersities are not necessarily more advantageous to form uniform nanostructures. This unravels the fundamental role of molecular weight distribution shape in polymer self-assembly and introduces a new tool for tuning particle properties, specifically via continuous flow processes. | Notes: | Junkers, T (corresponding author), Monash Univ, Sch Chem, Polymer React Design Grp, 19 Rainforest Walk,Bldg 23, Clayton, Vic 3800, Australia.; Junkers, T (corresponding author), Hasselt Univ, Materlarenlaan 42, B-3500 Hasselt, Belgium. tanja.junkers@monash.edu |
Document URI: | http://hdl.handle.net/1942/37628 | ISSN: | 1759-9954 | e-ISSN: | 1759-9962 | DOI: | 10.1039/d2py00318j | ISI #: | WOS:000799818900001 | Rights: | The Royal Society of Chemistry 2022 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2023 |
Appears in Collections: | Research publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
d2py00318j 3444..3450 ++.pdf Restricted Access | Published version | 1.04 MB | Adobe PDF | View/Open Request a copy |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.