Stereocomplex formation in AB di-block copolymers of poly(ε-caprolactone) (A) and poly(lactide) (B)

Willem M. Stevels; Marc J.K. Ankoné; Pieter J. Dijkstra; Jan Feijen

doi:10.1002/masy.19961020115

Stereocomplex formation in AB di-block copolymers of poly(ε-caprolactone) (A) and poly(lactide) (B)

Willem M. Stevels, Marc J.K. Ankoné, Pieter J. Dijkstra, Jan Feijen^*

^*Corresponding author for this work

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Abstract

The thermal properties of two series of AB di-block copolymers of poly(ε-caprolactone) (A) and poly(lactide) (B) and their blends were studied. Each series contained poly(lactide) blocks of opposite chirality. The length of the poly(ε-caprolactone) blocks was not varied (DP = 70), whereas the poly(lactide) blocks were of varying length (DP = 5 - 80). Blends of polymers containing blocks of opposite chirality were prepared by mixing in solution. The melting temperature of the PLA phase was raised by approximately 55 °C in the blends due to stereocomplex formation. The melting temperatures of the crystalline PCL and PLA phases strongly depended on the composition of the block copolymers.

Original language	English
Pages (from-to)	107-113
Number of pages	7
Journal	Macromolecular symposia
Volume	102
DOIs	https://doi.org/10.1002/masy.19961020115
Publication status	Published - 1 Jan 1996

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T1 - Stereocomplex formation in AB di-block copolymers of poly(ε-caprolactone) (A) and poly(lactide) (B)

AU - Stevels, Willem M.

AU - Ankoné, Marc J.K.

AU - Dijkstra, Pieter J.

AU - Feijen, Jan

PY - 1996/1/1

Y1 - 1996/1/1

N2 - The thermal properties of two series of AB di-block copolymers of poly(ε-caprolactone) (A) and poly(lactide) (B) and their blends were studied. Each series contained poly(lactide) blocks of opposite chirality. The length of the poly(ε-caprolactone) blocks was not varied (DP = 70), whereas the poly(lactide) blocks were of varying length (DP = 5 - 80). Blends of polymers containing blocks of opposite chirality were prepared by mixing in solution. The melting temperature of the PLA phase was raised by approximately 55 °C in the blends due to stereocomplex formation. The melting temperatures of the crystalline PCL and PLA phases strongly depended on the composition of the block copolymers.

AB - The thermal properties of two series of AB di-block copolymers of poly(ε-caprolactone) (A) and poly(lactide) (B) and their blends were studied. Each series contained poly(lactide) blocks of opposite chirality. The length of the poly(ε-caprolactone) blocks was not varied (DP = 70), whereas the poly(lactide) blocks were of varying length (DP = 5 - 80). Blends of polymers containing blocks of opposite chirality were prepared by mixing in solution. The melting temperature of the PLA phase was raised by approximately 55 °C in the blends due to stereocomplex formation. The melting temperatures of the crystalline PCL and PLA phases strongly depended on the composition of the block copolymers.

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Stereocomplex formation in AB di-block copolymers of poly(ε-caprolactone) (A) and poly(lactide) (B)

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