MEAN FIELD AND MONTE CARLO MODELING OF MULTIBLOCK COPOLYMERS

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The authors discuss and apply extensions needed to treat multiblock copolymers within the mean field theoretical framework for microphase separation in diblock copolymer metals, originally due to Leibler. The mean field calculations are complemented by lattice Monte Carlo realizations using the bond fluctuation model. They find that the microphase separation transition occurs at larger {sub {chi}}N as the number of blocks in increased beyond two (i.e., beyond diblock), and that the characteristic length scale of the emerging morphology decreases as the number of blocks increases. The latter prediction is in qualitative agreement with published experimental results due to Sontak and ... continued below

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324 Kilobytes pages

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RASMUSSEN, K. & AL, ET January 1, 2001.

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The authors discuss and apply extensions needed to treat multiblock copolymers within the mean field theoretical framework for microphase separation in diblock copolymer metals, originally due to Leibler. The mean field calculations are complemented by lattice Monte Carlo realizations using the bond fluctuation model. They find that the microphase separation transition occurs at larger {sub {chi}}N as the number of blocks in increased beyond two (i.e., beyond diblock), and that the characteristic length scale of the emerging morphology decreases as the number of blocks increases. The latter prediction is in qualitative agreement with published experimental results due to Sontak and co-workers for model multiblock poly(styrene-isoprene) systems and recent results due to Hjelm and co-workers for a segmented poly(ester-urethane) relevant to Los Alamos interests. Additionally, the mean field predictions and bond fluctuation realizations yield consistent results.

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324 Kilobytes pages

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  • Report No.: LA-UR-01-91
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 773325
  • Archival Resource Key: ark:/67531/metadc718347

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  • January 1, 2001

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  • Sept. 29, 2015, 5:31 a.m.

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  • March 22, 2016, 3:50 p.m.

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RASMUSSEN, K. & AL, ET. MEAN FIELD AND MONTE CARLO MODELING OF MULTIBLOCK COPOLYMERS, article, January 1, 2001; New Mexico. (digital.library.unt.edu/ark:/67531/metadc718347/: accessed August 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.