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Polymer Bulletin

, Volume 16, Issue 2–3, pp 201–207 | Cite as

Anomalous penetrant transport in glassy polymers

VII. Overshoots in cyclohexane uptake in crosslinked polystyrene
  • Nikolaos A. Peppas
  • Kent G. Urdahl
Article

Summary

Transport of liquid cyclohexane through well characterized, initially glassy, crosslinked polystyrene slabs was investigated as a function of time at 20, 30, 40, and 50 ° C. The samples used were produced by bulk polymerization of styrene and divinyl benzene using benzoyl peroxide as an initiator at 90 ° C for 48 hrs. The samples tested had initial crosslinking ratios, X, between 0.005 and 0.0250 mol DVB/mol styrene, their thickness varied from 0.025 to 0.180 cm, and the aspect ratio was maintained above 10 to achieve one-dimensional transport. A cyclohexane uptake overshoot was observed as a function of time. This overshoot was analyzed as a function of crosslinking ratio and geometric characteristics of the samples and it was attributed to molecular changes of polystyrene during swelling.

Keywords

Benzene Aspect Ratio Polystyrene Styrene Cyclohexane 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1986

Authors and Affiliations

  • Nikolaos A. Peppas
    • 1
  • Kent G. Urdahl
    • 1
  1. 1.School of Chemical EngineeringPurdue UniversityWest LafayetteUSA

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