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Persistent URL http://purl.org/net/epubs/work/50300585
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Record Id 50300585
Title Oxidative degradation of triblock-copolymer surfactant and its effects on self-assembly
Abstract We investigate the degradation behaviour of a triblock-copolymer surfactant made from polyethylene oxide (PEO) and polypropylene oxide (PPO) (PEO-PPO-PEO), highlighting how the aggregation behaviour of this polymer in water alters with ageing. Samples aged at room temperature were compared to samples degraded using accelerated ageing at elevated temperatures. We find that large mass losses occurred to the polymer surfactant which resulted in a change in the aggregation behaviour, with larger, rod-like or planar aggregates forming at longer degradation times. We look at how this change in aggregation behaviour changes the formulation stability of these polymers, specifically, the interaction of the polymer surfactant with poly(N-isopropylacrylamide) microgels. It is known that these species associate and form gels at elevated temperatures. This paper highlights how commonly used polymeric surfactants can degrade over time, resulting in dramatic changes to aggregation behaviour and therefore, formulation properties.
Organisation ISIS , STFC , ISIS-ZOOM
Keywords RB2010103 , SasView
Funding Information EPSRC, Bristol Centre for Functional Nanomaterials (EP/L016648/1); EPSRC (GR/M32320/01); ERC (NANOPRS 617266)
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Licence Information: Creative Commons Attribution 4.0 International (CC BY 4.0)
Language English (EN)
Type Details URI(s) Local file(s) Year
Journal Article J Coll Int Sci 606, no. 2 (2021): 953-960. doi:10.1016/j.jcis.2021.08.045 2021