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Home  >  Journal list  >  Polymer Journal  >  Vol.26  No.7 (1994)  >  pp.816-821

Polymer Journal
<<Previous article Vol.26  No.7 (1994)   pp.816 - 821 Next article>>

Thermal Properties of Poly(ethylene 2,6-naphthalate) and Poly(butylene 2,6-naphthalate) Blends

Kwan Han Yoon1), Sang Cheol Lee1) and O Ok Park2)
1) Department of Polymer Science & Engineering, Kum-Oh National University of Technology
2) Department of Chemical Engineering, Korea Advanced Institute of Science & Technology


ABSTRACT:  Thermal properties of poly(ethylene 2,6-naphthalate) (PEN)/poly(butylene 2,6-naphthalate) (PBN) blends were investigated by differential scanning calorimetry. Blends containing less than 60 wt% PBN showed double glass transitions, which approach mutually closer with increasing PBN content, whereas a single glass transition was observed for compositions more than 80 wt% PBN. This behavior indicates that the blends with 60 wt% PBN or less separate into two amorphous phases containing both components and the difference in composition between two phases decreases with an increase of PBN content, while a single amorphous phase is formed for compositions more than 80 wt% PBN. This result was supported by melting behavior and crystallization kinetics.


Keyword:
Miscibility/ Poly(ethylene 2,6-naphthalate)/ Poly(butylene 2,6-naphthalate)/ Crystallization/ Transesterification/ Blend

Published online: April 03, 2005
© Copyright, 2005 by The Society of Polymer Science, Japan

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