Triblock copolymers and pentablock terpolymers of n-hexyl isocyanate with styrene and isoprene: Synthesis, characterization, and thermal properties | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

6762879

Reference Type

Journal Article

Title

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

Author(s)

Vazaios, A; Pitsikalis, M; Hadjichristidis, N; ,

Year

2003

Is Peer Reviewed?

Yes

Journal

Journal of Polymer Science. Part A, Polymer Chemistry
ISSN: 0887-624X
EISSN: 1099-0518

Publisher

JOHN WILEY & SONS INC

Location

HOBOKEN

Volume

Issue

Page Numbers

3094-3102

Language

English

DOI

10.1002/pola.10882

Web of Science Id

WOS:000185172500018

URL

http://://WOS:000185172500018
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Abstract

Triblock copolymers and pentablock terpolymers of n-hexyl isocyanate (H), styrene (S), and isoprene (1) 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 11:25) were synthesized by high-vacuum techniques in tetrahydrofuran at -98 degreesC with the sodium naphthalene/sodium tetraphenylborate initiating system. All materials were characterized by size exclusion chromatography, membrane osmometry, and H-1 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. (C) 2003 Wiley Periodicals, Inc.