Abstract
The aggregation of PS 4- b-PEO 227- b-PS 4 triblock copolymer (the PS and PEO are abbreviations of polystyrene and poly(ethylene oxide), and the subscripts represent the degree of polymerization) in aqueous solution was investigated by Nuclear Magnetic Resonance, Fluorescence Probe, and Transmission Electron Microscope techniques. The experimental results showed that the aggregation did occur and the critical concentration for aggregation was about 0.01 g/l. When the concentration of colloid solution was 10 g/l, the spherical aggregate with a highly polydispersity and radii ranging from 100 to 500 nm was observed. The possible structures of primary micelles and micellar aggregates were proposed. Additionally, the aggregation of PS 43- b-PEO 45- b-PS 43 and PS 18- b-PEO 45- b-PS 18 block copolymers was primarily concerned. The spherical aggregates with a certain size distribution were observed by Transmission Electron Microscope.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
