Monte Carlo simulation studies of reverse micelles of an anionic surfactant, sodium AOT, in a non‐polar solvent provide strong evidence that, in the absence of water, these clusters are charge ordered polyhedral shells. The stabilizing energy of these clusters is so large that the entropy of mixing is, in comparison, inconsequential and we predict that, if all waters of hydration could be removed (something not yet accomplished for the sodium salt) then AOT would be insoluble in nonpolar solvents.
{"title":"The Structure and Thermodynamic Stability of Reverse Micelles in Dry AOT/Alkane Mixtures","authors":"A. Wootton, Francois Picavez, P. Harrowell","doi":"10.1063/1.2897802","DOIUrl":"https://doi.org/10.1063/1.2897802","url":null,"abstract":"Monte Carlo simulation studies of reverse micelles of an anionic surfactant, sodium AOT, in a non‐polar solvent provide strong evidence that, in the absence of water, these clusters are charge ordered polyhedral shells. The stabilizing energy of these clusters is so large that the entropy of mixing is, in comparison, inconsequential and we predict that, if all waters of hydration could be removed (something not yet accomplished for the sodium salt) then AOT would be insoluble in nonpolar solvents.","PeriodicalId":46935,"journal":{"name":"Complex Systems","volume":"982 1","pages":"289-294"},"PeriodicalIF":1.2,"publicationDate":"2008-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1063/1.2897802","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58347943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We performed Monte Carlo simulation of water/oil/ABA triblock amphiphiles with hydrophilic A and hydrophobic B, on a 51×51×51 simple cubic lattice with periodic boundary conditions in x‐ and y‐directions. Bond fluctuation model(BFM) was used to describe amphiphile, where excluded volume effect and flexible movement of polymer bonds are ascertained. The ratio of water to oil was changed from 10/85 to 50/45 with 5% fixed dilute amphiphiles. For small water/oil ratio, many cubic water clusters surrounded by loop‐shaped amphiphiles dispersed in oil and they were bridged between each other by bridge‐shaped amphiphiles. On the other hand, phase separation between water and oil plus amphiphiles clearly occurred for large water/oil ratio, where water formed one grid‐shaped cluster. At some intermediate water/oil ratio, water cells aggregated into two water clusters with shape of rectangular rod, spread in x‐ and y‐directions and separated in z‐direction by mainly loop‐shaped amphiphiles, where water clusters and ...
{"title":"Monte Carlo Simulation for Ternary System of Water/Oil/ABA Triblock Copolymers","authors":"N. Nakagawa, K. Ohno","doi":"10.1063/1.2897844","DOIUrl":"https://doi.org/10.1063/1.2897844","url":null,"abstract":"We performed Monte Carlo simulation of water/oil/ABA triblock amphiphiles with hydrophilic A and hydrophobic B, on a 51×51×51 simple cubic lattice with periodic boundary conditions in x‐ and y‐directions. Bond fluctuation model(BFM) was used to describe amphiphile, where excluded volume effect and flexible movement of polymer bonds are ascertained. The ratio of water to oil was changed from 10/85 to 50/45 with 5% fixed dilute amphiphiles. For small water/oil ratio, many cubic water clusters surrounded by loop‐shaped amphiphiles dispersed in oil and they were bridged between each other by bridge‐shaped amphiphiles. On the other hand, phase separation between water and oil plus amphiphiles clearly occurred for large water/oil ratio, where water formed one grid‐shaped cluster. At some intermediate water/oil ratio, water cells aggregated into two water clusters with shape of rectangular rod, spread in x‐ and y‐directions and separated in z‐direction by mainly loop‐shaped amphiphiles, where water clusters and ...","PeriodicalId":46935,"journal":{"name":"Complex Systems","volume":"982 1","pages":"497-500"},"PeriodicalIF":1.2,"publicationDate":"2008-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1063/1.2897844","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58348172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The effect of asynchronous change on a complex system's behaviour","authors":"J. Mansfield","doi":"10.1117/12.638801","DOIUrl":"https://doi.org/10.1117/12.638801","url":null,"abstract":"","PeriodicalId":46935,"journal":{"name":"Complex Systems","volume":"162 1","pages":"603904"},"PeriodicalIF":1.2,"publicationDate":"2005-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63606103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1995-09-04DOI: 10.1007/3-540-61108-8_42
E. Lutton, J. L. Véhel, Guillaume Cretin, Philippe Glevarec, Cidric Roll
{"title":"Mixed IFS: Resolution of the Inverse Problem using Genetic Programming","authors":"E. Lutton, J. L. Véhel, Guillaume Cretin, Philippe Glevarec, Cidric Roll","doi":"10.1007/3-540-61108-8_42","DOIUrl":"https://doi.org/10.1007/3-540-61108-8_42","url":null,"abstract":"","PeriodicalId":46935,"journal":{"name":"Complex Systems","volume":"33 1","pages":"247-258"},"PeriodicalIF":1.2,"publicationDate":"1995-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80029825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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