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Hot Embossing of Microfluidic Channel Structures in Cyclic Olefin Copolymers

Published online by Cambridge University Press:  01 February 2011

Patrick William Leech ,
Xiaoqing Zhang  and
Yonggang Zhu
Patrick William Leech
Affiliation:
[email protected], CSIRO, Gate 5 Normanby Rd, Clayton, 3169, Clayton, Victoria, 3169, Australia
Xiaoqing Zhang
Affiliation:
[email protected], CSIRO, CMSE, Clayton, Victoria, Victoria, Australia
Yonggang Zhu
Affiliation:
[email protected], CSIRO, Materials Science and Engineering, Highett, Victoria, Australia
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Abstract

The dynamic mechanical behaviour of a series of cyclic olefin copolymers (COCs) with varying norbornene content has been examined in the vicinity of the glass transition temperature, Tg. The temperature of the transition has been shown to increase linearly with increase in norbornene content. Measurements of both the elastic storage modulus, E′, and loss modulus, E″, have decreased exponentially with rise in temperature above Tg . A levelling-off in E″ occurred at >20 °C above Tg for all copolymers. The results of Dynamic Mechanical Thermal Analysis (DMTA) have been used in the identification of optimum conditions for hot embossing. At >20 °C above Tg in a region of viscous liquid flow, the hot embossing of COC has resulted in a full replication of channel depth without cracking or distortion.

Keywords

polymerelastic propertieshot pressing
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1272: Symposia KK/LL/NN/OO/PP – Integrated Miniaturized Materials-From Self-Assembly to Device Integration , 2010 , 1272-KK09-05
Copyright
Copyright © Materials Research Society 2010

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References

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