First observation of an ordered microphase in melts of poly(oxyethylene)-poly(oxypropylene) block copolymers

J. Patrick; J.P.A. Fairclough; G.E. Yu; S.M. Mai; M. Crothers; K. Mortensen; A.J. Ryan; null Booth,C.

doi:10.1039/a909182c

First observation of an ordered microphase in melts of poly(oxyethylene)-poly(oxypropylene) block copolymers

J. Patrick, J.P.A. Fairclough, G.E. Yu, S.M. Mai, M. Crothers, K. Mortensen, A.J. Ryan, Booth,C.

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

The first observation of ordered microphase structures in poly(oxyethylene)-poly(oxypropylene) diblock copolymers melts is reported. Two diblock copolymers were synthesised by anionic polymerisation, i.e. E130P58 and E107P69 where E represents an oxyethylene unit, OCH2CH2, and P an oxypropylene unit, OCH2CH(CH3). The volume fractions of the two components were in the range 0.5-0.6. Order in the melt phase was confirmed by small angle X-ray scattering, and order-to-disorder transitions (ODT) were located at 106 degrees C (E130P58) and 114 degrees C (E107P69). In a related experiment, a triblock copolymer with perdeuterated P blocks, E(33)dP(42)E(33), was synthesised and studied in the melt phase by small-angle neutron scattering. This allowed determination of the temperature dependence of the Flory-Huggins interaction parameter for the poly(oxyethylene)-poly(oxypropylene) system, i.e. chi = 20.2/T + 0.0221.

Original language	English
Journal	Physical Chemistry Chemical Physics
Volume	2
Issue number	7
Pages (from-to)	1503-1507
ISSN	1463-9076
DOIs	https://doi.org/10.1039/a909182c
Publication status	Published - 2000

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title = "First observation of an ordered microphase in melts of poly(oxyethylene)-poly(oxypropylene) block copolymers",

abstract = "The first observation of ordered microphase structures in poly(oxyethylene)-poly(oxypropylene) diblock copolymers melts is reported. Two diblock copolymers were synthesised by anionic polymerisation, i.e. E130P58 and E107P69 where E represents an oxyethylene unit, OCH2CH2, and P an oxypropylene unit, OCH2CH(CH3). The volume fractions of the two components were in the range 0.5-0.6. Order in the melt phase was confirmed by small angle X-ray scattering, and order-to-disorder transitions (ODT) were located at 106 degrees C (E130P58) and 114 degrees C (E107P69). In a related experiment, a triblock copolymer with perdeuterated P blocks, E(33)dP(42)E(33), was synthesised and studied in the melt phase by small-angle neutron scattering. This allowed determination of the temperature dependence of the Flory-Huggins interaction parameter for the poly(oxyethylene)-poly(oxypropylene) system, i.e. chi = 20.2/T + 0.0221. ",

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author = "J. Patrick and J.P.A. Fairclough and G.E. Yu and S.M. Mai and M. Crothers and K. Mortensen and A.J. Ryan and Booth,C.",

year = "2000",

doi = "10.1039/a909182c",

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T1 - First observation of an ordered microphase in melts of poly(oxyethylene)-poly(oxypropylene) block copolymers

AU - Patrick, J.

AU - Fairclough, J.P.A.

AU - Yu, G.E.

AU - Mai, S.M.

AU - Crothers, M.

AU - Mortensen, K.

AU - Ryan, A.J.

AU - Booth,C., null

PY - 2000

Y1 - 2000

N2 - The first observation of ordered microphase structures in poly(oxyethylene)-poly(oxypropylene) diblock copolymers melts is reported. Two diblock copolymers were synthesised by anionic polymerisation, i.e. E130P58 and E107P69 where E represents an oxyethylene unit, OCH2CH2, and P an oxypropylene unit, OCH2CH(CH3). The volume fractions of the two components were in the range 0.5-0.6. Order in the melt phase was confirmed by small angle X-ray scattering, and order-to-disorder transitions (ODT) were located at 106 degrees C (E130P58) and 114 degrees C (E107P69). In a related experiment, a triblock copolymer with perdeuterated P blocks, E(33)dP(42)E(33), was synthesised and studied in the melt phase by small-angle neutron scattering. This allowed determination of the temperature dependence of the Flory-Huggins interaction parameter for the poly(oxyethylene)-poly(oxypropylene) system, i.e. chi = 20.2/T + 0.0221.

AB - The first observation of ordered microphase structures in poly(oxyethylene)-poly(oxypropylene) diblock copolymers melts is reported. Two diblock copolymers were synthesised by anionic polymerisation, i.e. E130P58 and E107P69 where E represents an oxyethylene unit, OCH2CH2, and P an oxypropylene unit, OCH2CH(CH3). The volume fractions of the two components were in the range 0.5-0.6. Order in the melt phase was confirmed by small angle X-ray scattering, and order-to-disorder transitions (ODT) were located at 106 degrees C (E130P58) and 114 degrees C (E107P69). In a related experiment, a triblock copolymer with perdeuterated P blocks, E(33)dP(42)E(33), was synthesised and studied in the melt phase by small-angle neutron scattering. This allowed determination of the temperature dependence of the Flory-Huggins interaction parameter for the poly(oxyethylene)-poly(oxypropylene) system, i.e. chi = 20.2/T + 0.0221.

KW - Nye funktionelle materialer

U2 - 10.1039/a909182c

DO - 10.1039/a909182c

M3 - Journal article

SN - 1463-9076

VL - 2

SP - 1503

EP - 1507

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 7

ER -

First observation of an ordered microphase in melts of poly(oxyethylene)-poly(oxypropylene) block copolymers

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