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


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.


Benzene Aspect Ratio Polystyrene Styrene Cyclohexane 
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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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