| Original Articles |
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Miscibility of Two Components in a Binary Mixture of 9-Phenyl Anthracene Mixed with Stearic Acid or Polymethyl Methacrylate at Air--Water Interface |
| P. K. Paul;Md. N. Islam;D. Bhattacharjee;S. A. Hussain |
| Department of Physics, Tripura University, Suryamaninagar-799130, Tripura, India |
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| Cite this article: |
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P. K. Paul, Md. N. Islam, D. Bhattacharjee et al 2007 Chin. Phys. Lett. 24 1331-1334 |
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Abstract We report the miscibility characteristics of two components in a binary mixture of 9-phenyl anthracene (PA) mixed with stearic acid (SA) or polymethyl methacrylate (PMMA). The behaviour of surface pressure versus area per molecule isotherms reveal that the area per molecule decreases systematically with increasing molefractions of PA. The characteristics of areas per molecule versus molefractions and collapse pressure vs molefraction indicate that various interactions involved among the sample and matrix molecules. The interaction scheme is found to change with the change in surface pressure and molefraction of mixing. Scanning electron microscopic study confirms the aggregation of PA molecules in the mixed films.
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| Keywords:
68.37.-d
68.18.-g
68.47.Pe
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Received: 25 December 2006
Published: 23 April 2007
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| PACS: |
68.37.-d
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(Microscopy of surfaces, interfaces, and thin films)
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68.18.-g
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(Langmuir-Blodgett films on liquids)
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68.47.Pe
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(Langmuir-Blodgett films on solids; polymers on surfaces; biological molecules on surfaces)
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