Synthesis of poly(n-hexyl isocyanate-b-N-vinylpyrrolidone) block copolymers by the combination of anionic and nitroxide-mediated radical polymerizations: Micellization properties in aqueous solutions

Panayiotis Bilalis; Georgia Zorba; Marinos Pitsikalis; Nikos Hadjichristidis

doi:10.1002/pola.21676

Synthesis of poly(n-hexyl isocyanate-b-N-vinylpyrrolidone) block copolymers by the combination of anionic and nitroxide-mediated radical polymerizations: Micellization properties in aqueous solutions

Panayiotis Bilalis, Georgia Zorba, Marinos Pitsikalis, Nikos Hadjichristidis^*

^*Corresponding author for this work

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

27 Scopus citations

Abstract

A combination of anionic and nitroxide-mediated radical polymerizations (dual initiator) was employed for the synthesis of poly(n-hexyl isocyanate-b-N-vinylpyrrolidone) (PHIC-b-PNVP) block copolymers. The samples were characterized with a size exclusion Chromatograph equipped with refractive-index and light scattering detectors as well as ¹H NMR spectroscopy. Relatively good control over the molecular weights was achieved. However, rather broad molecular weight distributions were obtained. The micellar properties of the PHIC-6-PNVP block copolymers were studied in water, which is a selective solvent for the poly(N-vinylpyrrolidone) blocks. Static and dynamic light scattering revealed the presence of equilibrium between the micelles and clusters. The clusters partially deaggregated with increasing temperature.

Original language	English (US)
Pages (from-to)	5719-5728
Number of pages	10
Journal	Journal of Polymer Science, Part A: Polymer Chemistry
Volume	44
Issue number	19
DOIs	https://doi.org/10.1002/pola.21676
State	Published - Oct 1 2006
Externally published	Yes

Keywords

Anionic polymerization
Block copolymers
Micelles
N-vinylpyrrolidone
Nitroxide-mediated radical polymerization
n-hexyl isocyanate

ASJC Scopus subject areas

Polymers and Plastics
Organic Chemistry
Materials Chemistry

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10.1002/pola.21676

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Bilalis, P., Zorba, G., Pitsikalis, M., & Hadjichristidis, N. (2006). Synthesis of poly(n-hexyl isocyanate-b-N-vinylpyrrolidone) block copolymers by the combination of anionic and nitroxide-mediated radical polymerizations: Micellization properties in aqueous solutions. Journal of Polymer Science, Part A: Polymer Chemistry, 44(19), 5719-5728. https://doi.org/10.1002/pola.21676

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title = "Synthesis of poly(n-hexyl isocyanate-b-N-vinylpyrrolidone) block copolymers by the combination of anionic and nitroxide-mediated radical polymerizations: Micellization properties in aqueous solutions",

abstract = "A combination of anionic and nitroxide-mediated radical polymerizations (dual initiator) was employed for the synthesis of poly(n-hexyl isocyanate-b-N-vinylpyrrolidone) (PHIC-b-PNVP) block copolymers. The samples were characterized with a size exclusion Chromatograph equipped with refractive-index and light scattering detectors as well as 1H NMR spectroscopy. Relatively good control over the molecular weights was achieved. However, rather broad molecular weight distributions were obtained. The micellar properties of the PHIC-6-PNVP block copolymers were studied in water, which is a selective solvent for the poly(N-vinylpyrrolidone) blocks. Static and dynamic light scattering revealed the presence of equilibrium between the micelles and clusters. The clusters partially deaggregated with increasing temperature.",

keywords = "Anionic polymerization, Block copolymers, Micelles, N-vinylpyrrolidone, Nitroxide-mediated radical polymerization, n-hexyl isocyanate",

author = "Panayiotis Bilalis and Georgia Zorba and Marinos Pitsikalis and Nikos Hadjichristidis",

year = "2006",

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language = "English (US)",

volume = "44",

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

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Bilalis, P, Zorba, G, Pitsikalis, M & Hadjichristidis, N 2006, 'Synthesis of poly(n-hexyl isocyanate-b-N-vinylpyrrolidone) block copolymers by the combination of anionic and nitroxide-mediated radical polymerizations: Micellization properties in aqueous solutions', Journal of Polymer Science, Part A: Polymer Chemistry, vol. 44, no. 19, pp. 5719-5728. https://doi.org/10.1002/pola.21676

Synthesis of poly(n-hexyl isocyanate-b-N-vinylpyrrolidone) block copolymers by the combination of anionic and nitroxide-mediated radical polymerizations: Micellization properties in aqueous solutions. / Bilalis, Panayiotis; Zorba, Georgia; Pitsikalis, Marinos et al.
In: Journal of Polymer Science, Part A: Polymer Chemistry, Vol. 44, No. 19, 01.10.2006, p. 5719-5728.

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

TY - JOUR

T1 - Synthesis of poly(n-hexyl isocyanate-b-N-vinylpyrrolidone) block copolymers by the combination of anionic and nitroxide-mediated radical polymerizations

T2 - Micellization properties in aqueous solutions

AU - Bilalis, Panayiotis

AU - Zorba, Georgia

AU - Pitsikalis, Marinos

AU - Hadjichristidis, Nikos

PY - 2006/10/1

Y1 - 2006/10/1

N2 - A combination of anionic and nitroxide-mediated radical polymerizations (dual initiator) was employed for the synthesis of poly(n-hexyl isocyanate-b-N-vinylpyrrolidone) (PHIC-b-PNVP) block copolymers. The samples were characterized with a size exclusion Chromatograph equipped with refractive-index and light scattering detectors as well as 1H NMR spectroscopy. Relatively good control over the molecular weights was achieved. However, rather broad molecular weight distributions were obtained. The micellar properties of the PHIC-6-PNVP block copolymers were studied in water, which is a selective solvent for the poly(N-vinylpyrrolidone) blocks. Static and dynamic light scattering revealed the presence of equilibrium between the micelles and clusters. The clusters partially deaggregated with increasing temperature.

AB - A combination of anionic and nitroxide-mediated radical polymerizations (dual initiator) was employed for the synthesis of poly(n-hexyl isocyanate-b-N-vinylpyrrolidone) (PHIC-b-PNVP) block copolymers. The samples were characterized with a size exclusion Chromatograph equipped with refractive-index and light scattering detectors as well as 1H NMR spectroscopy. Relatively good control over the molecular weights was achieved. However, rather broad molecular weight distributions were obtained. The micellar properties of the PHIC-6-PNVP block copolymers were studied in water, which is a selective solvent for the poly(N-vinylpyrrolidone) blocks. Static and dynamic light scattering revealed the presence of equilibrium between the micelles and clusters. The clusters partially deaggregated with increasing temperature.

KW - Anionic polymerization

KW - Block copolymers

KW - Micelles

KW - N-vinylpyrrolidone

KW - Nitroxide-mediated radical polymerization

KW - n-hexyl isocyanate

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DO - 10.1002/pola.21676

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

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Synthesis of poly(n-hexyl isocyanate-b-N-vinylpyrrolidone) block copolymers by the combination of anionic and nitroxide-mediated radical polymerizations: Micellization properties in aqueous solutions

Abstract

Keywords

ASJC Scopus subject areas

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