Single polymer molecules adsorbed to mica and the oppositely charged polymer/surfactant complexes formed at the air–water interface visualized by atomic force microscopy |
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| Authors: | Feng Zhao Yu-Kou Du Ping Yang Ji’an Tang Xing-Chang Li |
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| Affiliation: | (1) CAS Key Laboratory of Colloid and Interface Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100080, China;(2) Chemistry and Chemical Engineering Department, Suzhou University, Su Zhou, 215006, China |
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| Abstract: | In the present study, the structure and morphology of single sodium poly(styrenesulfonate) (PSS) molecules adsorbed to mica surface from the natural aqueous solution is investigated using atomic force microscopy technique. Results show that single PSS molecules are observed which show a morphology of wormlike coils. Meanwhile, single sodium poly(styrenesulfonate) (PSS)/Hexadecyltrimethylammonium bromide (CTAB) complexes deposited on mica from the air–water interface are also observed. However, the PSS/CTA+ complexes show different conformations by appearing in the morphology of circular patches. Experimental data are in fair agreement with the theoretical analysis. |
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| Keywords: | Structure and morphology Atomic force microscopy (AFM) The air– water interface |
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