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Investigation of the Melting Behavior of the Alternating PEO/PCL Multiblock Copolymer by SAXS and WAXS

Published online by Cambridge University Press:  17 March 2011

Tae Chul Kim ,
Jong Ho Kim ,
Hyun Hwi Lee ,
You Han Bae  and
Do Young Noh
Tae Chul Kim
Affiliation:
Department of Materials Science and Engineering, Kwangju Institute of Science and Technology, Kwangju 500-712, Korea
Jong Ho Kim
Affiliation:
Department of Materials Science and Engineering, Kwangju Institute of Science and Technology, Kwangju 500-712, Korea
Hyun Hwi Lee
Affiliation:
Department of Materials Science and Engineering, Kwangju Institute of Science and Technology, Kwangju 500-712, Korea
You Han Bae
Affiliation:
Department of Materials Science and Engineering, Kwangju Institute of Science and Technology, Kwangju 500-712, Korea
Do Young Noh
Affiliation:
Department of Materials Science and Engineering, Kwangju Institute of Science and Technology, Kwangju 500-712, Korea
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Abstract

The melting of the semicrystalline poly(ethylene oxide)(PEO)/ poly(ε -caprolactone) (PCL) multiblock copolymer was investigated by small and wide angle x-ray scattering. The two-stage melting was found in which the PEO block and the PCL block melt independently. The crystalline PEO Bragg peaks disappear at 30.5 °C while the block spacing increases due to the chain relaxation. The PEO crystalline domain size decreases continuously in proportion to the amount of the crystalline part. Above 40 °C, the PCL lamellae domains started to melt and the integrated intensity of the PCL Bragg peak decreases with increasing temperature. In the case of the PCL, however, the crystal domain size decreases only slightly. This indicates that the number of the PCL crystalline domains decreases during the melting.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 711: Symposia FF/GG/HH – Advanced Biomaterials--Characterization, Tissue Engineering and Complexity , 2001 , FF4.10.1
Copyright
Copyright © Materials Research Society 2002

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References

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