Barrier properties and microstructure modifications induced by liquid water for a semiaromatic polyamide

This work deals with the role of liquid water on the microstructure of a semiaromatic polyamide (MXD6). One side of injected plates is kept in contact with water during different durations. After immersion, microtomic cuts are performed at different depth and are analyzed by X‐ray diffraction, diffe...

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Bibliographic Details
Published in:Journal of polymer science. Part B, Polymer physics Polymer physics, 2005-09, Vol.43 (18), p.2604-2616
Main Authors: Doudou, B. Ben, Dargent, E., Marais, S., Grenet, J., Hirata, Y.
Format: Article
Language:English
Subjects:
Applied sciences
crystallization
Exact sciences and technology
Miscellaneous
MXD6
Organic polymers
permeation
Physicochemistry of polymers
Properties and characterization
water
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Summary:This work deals with the role of liquid water on the microstructure of a semiaromatic polyamide (MXD6). One side of injected plates is kept in contact with water during different durations. After immersion, microtomic cuts are performed at different depth and are analyzed by X‐ray diffraction, differential scanning calorimetry, and permeation tests. Measurements show that the water plasticizes the initially amorphous plates and induces a spherulitic crystallization, which grows from the wet side to the dry one. As a consequence, the permeation curve is unusual, and the water flux goes through a maximum before reaching a lower plateau when the front of crystallization reaches the opposite dry face. © 2005 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 43: 2604–2616, 2005
ISSN:0887-6266
1099-0488
DOI:10.1002/polb.20551