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Effect of added homopolymer on the microphase separation transition temperature of block copolymer

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Summary

The change in the microphase separation transition temperature (Tmst) of a diblock copolymer (AB), induced by the addition of homopolymer (HA), is theoretically studied. The calculations based on the modified Meier's theory show that Tmst is dependent on both the volume fraction of added homopolymer and the molecular volume ratio of HA to AB, which is the same as the previous theoretical results and qualitatively in agreement with the experimental results. This theory also predicts that the molecular weight ratio at the crossover of Tmst from elevation to depression is affected by the molecular weight of AB.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, POSTECH, P.O. Box 125, 790-784, Pohang, Korea

    Hwan-Koo Lee & Wang-Cheol Zin

  2. Cheil Synthetics Inc. No. 14, Nongseo-Ri, Kiheung-Eub, Yongin-Gun, 449-900, Kyounggi-Do, Korea

    Chang-Kwon Kang

Authors
  1. Hwan-Koo Lee
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  2. Chang-Kwon Kang
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  3. Wang-Cheol Zin
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Lee, HK., Kang, CK. & Zin, WC. Effect of added homopolymer on the microphase separation transition temperature of block copolymer. Polymer Bulletin 36, 375–381 (1996). https://doi.org/10.1007/BF00319240

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  • DOI: https://doi.org/10.1007/BF00319240

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