Synthesis and Characterization of Block Copolymers from Poly(p-benzamide) and Poly(propylene glycol)

Block copolymers containing a rigid poly(p‐benzamide) and a flexible poly(propylene glycol) segment were synthesized by coupling aniline terminated poly(p‐benzamide) with either poly(propylene glycol) or poly‐(propylene glycol) monobutyl ether activated with terminal p‐(chlorocarbonyl)benzoyl end‐gr...

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Published inMacromolecular chemistry and physics Vol. 202; no. 7; pp. 1053 - 1059
Main Authors Rivas, Bernabé L., Canessa, Guido S., Luna, Maribel, Rabagliati, Franco M., Novi, Marino, Preston, Jack
Format Journal Article
LanguageEnglish
Published Weinheim WILEY-VCH Verlag GmbH 01.04.2001
WILEY‐VCH Verlag GmbH
Wiley
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Abstract Block copolymers containing a rigid poly(p‐benzamide) and a flexible poly(propylene glycol) segment were synthesized by coupling aniline terminated poly(p‐benzamide) with either poly(propylene glycol) or poly‐(propylene glycol) monobutyl ether activated with terminal p‐(chlorocarbonyl)benzoyl end‐groups. These coupling reactions were carried out at temperatures between –22°C and 40°C, with various feed reagent ratios. To eliminate the low molecular weight fractions of homopolymers and copolymers, a solubility criterion at constant temperature was used. At 30°C it is possible separate a soluble and insoluble fraction in DMAc. The molecular weight of the soluble fractions ranged between 9 300 and 13 100 g/mol. All the copolymers were characterized by FT‐IR spectroscopy, thermal analysis, and viscosity.
AbstractList Block copolymers containing a rigid poly(p‐benzamide) and a flexible poly(propylene glycol) segment were synthesized by coupling aniline terminated poly(p‐benzamide) with either poly(propylene glycol) or poly‐(propylene glycol) monobutyl ether activated with terminal p‐(chlorocarbonyl)benzoyl end‐groups. These coupling reactions were carried out at temperatures between –22°C and 40°C, with various feed reagent ratios. To eliminate the low molecular weight fractions of homopolymers and copolymers, a solubility criterion at constant temperature was used. At 30°C it is possible separate a soluble and insoluble fraction in DMAc. The molecular weight of the soluble fractions ranged between 9 300 and 13 100 g/mol. All the copolymers were characterized by FT‐IR spectroscopy, thermal analysis, and viscosity.
Author Rivas, Bernabé L.
Canessa, Guido S.
Luna, Maribel
Preston, Jack
Novi, Marino
Rabagliati, Franco M.
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  fullname: Preston, Jack
  organization: Department of Chemical Engineering, North Carolina State University, Box 7995, Raleigh, NC 27695-7905, U.S.A
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Issue 7
Keywords Condensation reaction
End group
Ether copolymer
Experimental study
Thermal stability
Benzamide copolymer
Chemical modification
Propylene oxide polymer
Preparation
Amide copolymer
Diblock copolymer
Polybenzamide
Propylene oxide copolymer
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Snippet Block copolymers containing a rigid poly(p‐benzamide) and a flexible poly(propylene glycol) segment were synthesized by coupling aniline terminated...
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SubjectTerms Applied sciences
Chemical modifications
Chemical reactions and properties
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Title Synthesis and Characterization of Block Copolymers from Poly(p-benzamide) and Poly(propylene glycol)
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