Nanoscale domain evolution as a function of pressure in dual functional bactericidal and antifouling compositionally variant brush mixtures
By means of Grazing Incidence Neutron Scattering (GISANS) and Time-of-flight Neutron Reflectometry (ToF-NR), we focus on lateral and transversal nanoscale morphologies respectively in a pressure (P) range from P = 1 bar to P = 1000 bar from two different grafted equimolar protonated immersed brush mixtures: (i) a strongly segregated Poly(2,2,3,3,4,4,5,5-(octafluoro) pentyl methacrylate) (POFPMA) / Poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) mixture and (ii) a weakly segregated Poly (methyl methacrylate) (PMMA) / Poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) brush homopolymer mixture. Heavy water (D2O) will be used as swelling and contrast agent, silicon wafer as the substrate. We are interested in correlating chemical composition to nanoscale segregation for these two immersed brush systems at different P-values at the solid-liquid interface. Lateral and vertical resolution of D22 and FIGARO will allow us to identify localization of nanoscale segregation and/or solvent domains and impact nanotribology and soft robotics for deep sea research.
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Vagias, Apostolos; BUCHNER Andreas; Leonardo Chiappisi; GUTFREUND Philipp; KOSBAHN David; Morgan Le Dû; MUELLER BUSCHBAUM Peter; PORCAR Lionel; REITENBACH Julija and WOLF Marcell. (2023). Nanoscale domain evolution as a function of pressure in dual functional bactericidal and antifouling compositionally variant brush mixtures. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-11-2089
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