Triblock copolymers and pentablock terpolymers of n-hexyl isocyanate with styrene and isoprene: Synthesis, characterization, and thermal properties

Aggelos Vazaios; Marinos Pitsikalis; Nikos Hadjichristidis

doi:10.1002/pola.10882

Triblock copolymers and pentablock terpolymers of n-hexyl isocyanate with styrene and isoprene: Synthesis, characterization, and thermal properties

Aggelos Vazaios, Marinos Pitsikalis, Nikos Hadjichristidis^*

^*Corresponding author for this work

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

28 Scopus citations

Abstract

Triblock copolymers and pentablock terpolymers of n-hexyl isocyanate (H), styrene (S), and isoprene (I) of the type HSH (six samples, M_n:49-163 K, weight % of H:5-59), HIH (two samples, M_n:75 and 83.4 K, weight % of H:16 and 40), HSISH (one sample, M_n:79.4 K, weight % of H:13), and HISIH (one sample, M_n:128 K, weight % of H:25) were synthesized by high-vacuum techniques in tetrahydrofuran at -98°C with the sodium naphthalene/sodium tetraphenylborate initiating system. All materials were characterized by size exclusion chromatography, membrane osmometry, and ¹H NMR. The combined molecular characterization results revealed a high degree of molecular and compositional homogeneity. The thermal properties of the synthesized materials were examined by thermogravimetric analysis and differential scanning calorimetry.

Original language	English (US)
Pages (from-to)	3094-3102
Number of pages	9
Journal	Journal of Polymer Science, Part A: Polymer Chemistry
Volume	41
Issue number	19
DOIs	https://doi.org/10.1002/pola.10882
State	Published - Oct 1 2003
Externally published	Yes

Keywords

Anionic polymerization
Block copolymers
Block terpolymers
Thermal properties
n-hexyl isocyanate

ASJC Scopus subject areas

Polymers and Plastics
Organic Chemistry
Materials Chemistry

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title = "Triblock copolymers and pentablock terpolymers of n-hexyl isocyanate with styrene and isoprene: Synthesis, characterization, and thermal properties",

abstract = "Triblock copolymers and pentablock terpolymers of n-hexyl isocyanate (H), styrene (S), and isoprene (I) of the type HSH (six samples, Mn:49-163 K, weight % of H:5-59), HIH (two samples, Mn:75 and 83.4 K, weight % of H:16 and 40), HSISH (one sample, Mn:79.4 K, weight % of H:13), and HISIH (one sample, Mn:128 K, weight % of H:25) were synthesized by high-vacuum techniques in tetrahydrofuran at -98°C with the sodium naphthalene/sodium tetraphenylborate initiating system. All materials were characterized by size exclusion chromatography, membrane osmometry, and 1H NMR. The combined molecular characterization results revealed a high degree of molecular and compositional homogeneity. The thermal properties of the synthesized materials were examined by thermogravimetric analysis and differential scanning calorimetry.",

keywords = "Anionic polymerization, Block copolymers, Block terpolymers, Thermal properties, n-hexyl isocyanate",

author = "Aggelos Vazaios and Marinos Pitsikalis and Nikos Hadjichristidis",

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doi = "10.1002/pola.10882",

language = "English (US)",

volume = "41",

pages = "3094--3102",

journal = "Journal of Polymer Science, Part A: Polymer Chemistry",

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publisher = "Wiley",

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Triblock copolymers and pentablock terpolymers of n-hexyl isocyanate with styrene and isoprene: Synthesis, characterization, and thermal properties. / Vazaios, Aggelos; Pitsikalis, Marinos; Hadjichristidis, Nikos.
In: Journal of Polymer Science, Part A: Polymer Chemistry, Vol. 41, No. 19, 01.10.2003, p. 3094-3102.

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

TY - JOUR

T1 - Triblock copolymers and pentablock terpolymers of n-hexyl isocyanate with styrene and isoprene

T2 - Synthesis, characterization, and thermal properties

AU - Vazaios, Aggelos

AU - Pitsikalis, Marinos

AU - Hadjichristidis, Nikos

PY - 2003/10/1

Y1 - 2003/10/1

N2 - Triblock copolymers and pentablock terpolymers of n-hexyl isocyanate (H), styrene (S), and isoprene (I) of the type HSH (six samples, Mn:49-163 K, weight % of H:5-59), HIH (two samples, Mn:75 and 83.4 K, weight % of H:16 and 40), HSISH (one sample, Mn:79.4 K, weight % of H:13), and HISIH (one sample, Mn:128 K, weight % of H:25) were synthesized by high-vacuum techniques in tetrahydrofuran at -98°C with the sodium naphthalene/sodium tetraphenylborate initiating system. All materials were characterized by size exclusion chromatography, membrane osmometry, and 1H NMR. The combined molecular characterization results revealed a high degree of molecular and compositional homogeneity. The thermal properties of the synthesized materials were examined by thermogravimetric analysis and differential scanning calorimetry.

AB - Triblock copolymers and pentablock terpolymers of n-hexyl isocyanate (H), styrene (S), and isoprene (I) of the type HSH (six samples, Mn:49-163 K, weight % of H:5-59), HIH (two samples, Mn:75 and 83.4 K, weight % of H:16 and 40), HSISH (one sample, Mn:79.4 K, weight % of H:13), and HISIH (one sample, Mn:128 K, weight % of H:25) were synthesized by high-vacuum techniques in tetrahydrofuran at -98°C with the sodium naphthalene/sodium tetraphenylborate initiating system. All materials were characterized by size exclusion chromatography, membrane osmometry, and 1H NMR. The combined molecular characterization results revealed a high degree of molecular and compositional homogeneity. The thermal properties of the synthesized materials were examined by thermogravimetric analysis and differential scanning calorimetry.

KW - Anionic polymerization

KW - Block copolymers

KW - Block terpolymers

KW - Thermal properties

KW - n-hexyl isocyanate

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U2 - 10.1002/pola.10882

DO - 10.1002/pola.10882

M3 - Article

AN - SCOPUS:0141480892

SN - 0887-624X

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SP - 3094

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JO - Journal of Polymer Science, Part A: Polymer Chemistry

JF - Journal of Polymer Science, Part A: Polymer Chemistry

IS - 19

ER -

Triblock copolymers and pentablock terpolymers of n-hexyl isocyanate with styrene and isoprene: Synthesis, characterization, and thermal properties

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Keywords

ASJC Scopus subject areas

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