Phase Behavior of Poly(4-tert-butylstyrene-stat-4-tertbutoxystyrene)/ polyisoprene blends with competitive interactions

Siti Arah Abdul Rahman; Daisuke Kawaguchi; Daisaku Ito; Atsushi Takano; Yushu Matsushita

doi:10.1002/polb.21824

Phase Behavior of Poly(4-tert-butylstyrene-stat-4-tertbutoxystyrene)/ polyisoprene blends with competitive interactions

Siti Arah Abdul Rahman, Daisuke Kawaguchi, Daisaku Ito, Atsushi Takano, Yushu Matsushita

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

The phase behavior of statistical copolymers composed of (4-tert-butylstyrene) (B) and (4-tert-butoxystyrene) (O), abbreviated as s-BO, with polyisoprene (I) was investigated by optical microscopic (OM) observation and small-angle neutron scattering (SANS) measurements. It has been known that B/I blend shows lower critical solution temperature (LCST) type phase diagram, while O/I blend has upper critical solution temperature (UCST) type one. Several blends of s-BOs having mol fraction of B, m_B, comparable to 0.50, with I showed both UCST and LCST type phase diagram. Furthermore, UCST type phase behavior was observed for blends having small m_B, while LCST type one was for that of large mB at all used temperatures. Hence, the phase behavior of s-BO/I blend can be understood as a result of the competition of two interactions having opposite temperature dependence.

Original language	English
Pages (from-to)	2272-2280
Number of pages	9
Journal	Journal of Polymer Science, Part B: Polymer Physics
Volume	47
Issue number	22
DOIs	https://doi.org/10.1002/polb.21824
Publication status	Published - Nov 15 2009
Externally published	Yes

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Physical and Theoretical Chemistry
Polymers and Plastics
Materials Chemistry

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10.1002/polb.21824

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Phase Behavior of Poly(4-tert-butylstyrene-stat-4-tertbutoxystyrene)/ polyisoprene blends with competitive interactions. / Rahman, Siti Arah Abdul; Kawaguchi, Daisuke; Ito, Daisaku; Takano, Atsushi; Matsushita, Yushu.

In: Journal of Polymer Science, Part B: Polymer Physics, Vol. 47, No. 22, 15.11.2009, p. 2272-2280.

Research output: Contribution to journal › Article › peer-review

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title = "Phase Behavior of Poly(4-tert-butylstyrene-stat-4-tertbutoxystyrene)/ polyisoprene blends with competitive interactions",

abstract = "The phase behavior of statistical copolymers composed of (4-tert-butylstyrene) (B) and (4-tert-butoxystyrene) (O), abbreviated as s-BO, with polyisoprene (I) was investigated by optical microscopic (OM) observation and small-angle neutron scattering (SANS) measurements. It has been known that B/I blend shows lower critical solution temperature (LCST) type phase diagram, while O/I blend has upper critical solution temperature (UCST) type one. Several blends of s-BOs having mol fraction of B, mB, comparable to 0.50, with I showed both UCST and LCST type phase diagram. Furthermore, UCST type phase behavior was observed for blends having small mB, while LCST type one was for that of large mB at all used temperatures. Hence, the phase behavior of s-BO/I blend can be understood as a result of the competition of two interactions having opposite temperature dependence.",

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AU - Rahman, Siti Arah Abdul

AU - Kawaguchi, Daisuke

AU - Ito, Daisaku

AU - Takano, Atsushi

AU - Matsushita, Yushu

PY - 2009/11/15

Y1 - 2009/11/15

N2 - The phase behavior of statistical copolymers composed of (4-tert-butylstyrene) (B) and (4-tert-butoxystyrene) (O), abbreviated as s-BO, with polyisoprene (I) was investigated by optical microscopic (OM) observation and small-angle neutron scattering (SANS) measurements. It has been known that B/I blend shows lower critical solution temperature (LCST) type phase diagram, while O/I blend has upper critical solution temperature (UCST) type one. Several blends of s-BOs having mol fraction of B, mB, comparable to 0.50, with I showed both UCST and LCST type phase diagram. Furthermore, UCST type phase behavior was observed for blends having small mB, while LCST type one was for that of large mB at all used temperatures. Hence, the phase behavior of s-BO/I blend can be understood as a result of the competition of two interactions having opposite temperature dependence.

AB - The phase behavior of statistical copolymers composed of (4-tert-butylstyrene) (B) and (4-tert-butoxystyrene) (O), abbreviated as s-BO, with polyisoprene (I) was investigated by optical microscopic (OM) observation and small-angle neutron scattering (SANS) measurements. It has been known that B/I blend shows lower critical solution temperature (LCST) type phase diagram, while O/I blend has upper critical solution temperature (UCST) type one. Several blends of s-BOs having mol fraction of B, mB, comparable to 0.50, with I showed both UCST and LCST type phase diagram. Furthermore, UCST type phase behavior was observed for blends having small mB, while LCST type one was for that of large mB at all used temperatures. Hence, the phase behavior of s-BO/I blend can be understood as a result of the competition of two interactions having opposite temperature dependence.

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Phase Behavior of Poly(4-tert-butylstyrene-stat-4-tertbutoxystyrene)/ polyisoprene blends with competitive interactions

Abstract

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