Two-dimensional self-assembly of poly(ethylene oxide)-b-poly(e-caprolactone) copolymers

T.J. Joncheray, K.M. Denoncourt, Claire Mathieu, M.A.R. Meier, U.S. Schubert, R.S. Duran

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

Monolayers of linear and star-shaped amphiphilic Poly(ethylene oxide)-b-Poly(e-caprolactone) copolymers (PEO-b-PCL) were studied at the air-water interface by surface pressure-mean mol. area (p-MMA) isotherms and compression-expansion hysteresis expts. The p-MMA isotherms of the linear copolymers exhibited three phase transitions at 6, 11 and 14mN/m, whereas only one transition at 14mN/m was obsd. for the star-shaped copolymers. The transition at 14mN/m arises from crystn. of the PCL segments and the transitions at 6 and 11mN/m are thought to arise from PEO dissoln. in the aq. subphase. The absence of the two PEO phase transitions for the star-shaped copolymers indicates a negligible surface activity of the star-shaped PEO core compared to the linear PEO analog. At. Force Microscopy imaging of the Langmuir-Blodgett films showed the presence of cryst. domains independent of the surface pressure, indicating that the Langmuir monolayers undergo morphol. changes (addnl. crystn.) during transfer to less hydrated solid surfaces. [on SciFinder (R)]
Original languageEnglish
Title of host publicationAbstracts of Papers, 231st ACS National Meeting, Atlanta, GA, United States, March 26-30, 2006
PagesCOLL-420
Publication statusPublished - 2006

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Polyethylene oxides
Self assembly
Copolymers
Stars
Isotherms
Monolayers
Phase transitions
Langmuir Blodgett films
Hysteresis
Microscopic examination
caprolactone
Imaging techniques
Water
Air

Cite this

Joncheray, T. J., Denoncourt, K. M., Mathieu, C., Meier, M. A. R., Schubert, U. S., & Duran, R. S. (2006). Two-dimensional self-assembly of poly(ethylene oxide)-b-poly(e-caprolactone) copolymers. In Abstracts of Papers, 231st ACS National Meeting, Atlanta, GA, United States, March 26-30, 2006 (pp. COLL-420)
Joncheray, T.J. ; Denoncourt, K.M. ; Mathieu, Claire ; Meier, M.A.R. ; Schubert, U.S. ; Duran, R.S. / Two-dimensional self-assembly of poly(ethylene oxide)-b-poly(e-caprolactone) copolymers. Abstracts of Papers, 231st ACS National Meeting, Atlanta, GA, United States, March 26-30, 2006. 2006. pp. COLL-420
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Joncheray, TJ, Denoncourt, KM, Mathieu, C, Meier, MAR, Schubert, US & Duran, RS 2006, Two-dimensional self-assembly of poly(ethylene oxide)-b-poly(e-caprolactone) copolymers. in Abstracts of Papers, 231st ACS National Meeting, Atlanta, GA, United States, March 26-30, 2006. pp. COLL-420.

Two-dimensional self-assembly of poly(ethylene oxide)-b-poly(e-caprolactone) copolymers. / Joncheray, T.J.; Denoncourt, K.M.; Mathieu, Claire; Meier, M.A.R.; Schubert, U.S.; Duran, R.S.

Abstracts of Papers, 231st ACS National Meeting, Atlanta, GA, United States, March 26-30, 2006. 2006. p. COLL-420.

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

TY - GEN

T1 - Two-dimensional self-assembly of poly(ethylene oxide)-b-poly(e-caprolactone) copolymers

AU - Joncheray, T.J.

AU - Denoncourt, K.M.

AU - Mathieu, Claire

AU - Meier, M.A.R.

AU - Schubert, U.S.

AU - Duran, R.S.

PY - 2006

Y1 - 2006

N2 - Monolayers of linear and star-shaped amphiphilic Poly(ethylene oxide)-b-Poly(e-caprolactone) copolymers (PEO-b-PCL) were studied at the air-water interface by surface pressure-mean mol. area (p-MMA) isotherms and compression-expansion hysteresis expts. The p-MMA isotherms of the linear copolymers exhibited three phase transitions at 6, 11 and 14mN/m, whereas only one transition at 14mN/m was obsd. for the star-shaped copolymers. The transition at 14mN/m arises from crystn. of the PCL segments and the transitions at 6 and 11mN/m are thought to arise from PEO dissoln. in the aq. subphase. The absence of the two PEO phase transitions for the star-shaped copolymers indicates a negligible surface activity of the star-shaped PEO core compared to the linear PEO analog. At. Force Microscopy imaging of the Langmuir-Blodgett films showed the presence of cryst. domains independent of the surface pressure, indicating that the Langmuir monolayers undergo morphol. changes (addnl. crystn.) during transfer to less hydrated solid surfaces. [on SciFinder (R)]

AB - Monolayers of linear and star-shaped amphiphilic Poly(ethylene oxide)-b-Poly(e-caprolactone) copolymers (PEO-b-PCL) were studied at the air-water interface by surface pressure-mean mol. area (p-MMA) isotherms and compression-expansion hysteresis expts. The p-MMA isotherms of the linear copolymers exhibited three phase transitions at 6, 11 and 14mN/m, whereas only one transition at 14mN/m was obsd. for the star-shaped copolymers. The transition at 14mN/m arises from crystn. of the PCL segments and the transitions at 6 and 11mN/m are thought to arise from PEO dissoln. in the aq. subphase. The absence of the two PEO phase transitions for the star-shaped copolymers indicates a negligible surface activity of the star-shaped PEO core compared to the linear PEO analog. At. Force Microscopy imaging of the Langmuir-Blodgett films showed the presence of cryst. domains independent of the surface pressure, indicating that the Langmuir monolayers undergo morphol. changes (addnl. crystn.) during transfer to less hydrated solid surfaces. [on SciFinder (R)]

M3 - Conference contribution

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BT - Abstracts of Papers, 231st ACS National Meeting, Atlanta, GA, United States, March 26-30, 2006

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Joncheray TJ, Denoncourt KM, Mathieu C, Meier MAR, Schubert US, Duran RS. Two-dimensional self-assembly of poly(ethylene oxide)-b-poly(e-caprolactone) copolymers. In Abstracts of Papers, 231st ACS National Meeting, Atlanta, GA, United States, March 26-30, 2006. 2006. p. COLL-420