Jump to main content
Jump to site search

Issue 54, 2017, Issue in Progress
Previous Article Next Article

Rapid synthesis and properties of segmented block copolymers based on monodisperse aromatic poly(N-methyl benzamide) and poly(propylene oxide)

Author affiliations

Abstract

Monodisperse aromatic N-methyl benzamide-based molecules (repeat number: x = 5–10, molar mass distribution Mw/Mn = 1.02–1.04) connected with terephthalic acid at both sides (MABxx) were rapidly prepared by a step-wise condensation reaction using the reported one-pot dendrimer synthetic method. These were copolymerized with NH2-terminated poly(propylene oxide) (PPOy) using a condensation reagent at ambient temperature, and the relationship between the structure and the properties was evaluated. The copolymers, poly(MABxx-b-PPOy), had Mn values up to 12 500 g mol−1 (Mw/Mn = 1.6), with only a single Tg at −70 °C by DSC, assignable to the pure PPO domain. Only for the copolymer films consisting of a monodisperse MABxx segment, did the dynamic mechanical analysis (DMA) show two Tg values at −70 and above 50 °C, indicating the clear phase segregation of the copolymers. The mechanical properties of the copolymer films were mostly dependent on the fraction of the monodisperse hard segment, and the tensile modulus and elongation at break varied from 3.3 to 32.5 MPa and 150 to 540%, respectively.

Graphical abstract: Rapid synthesis and properties of segmented block copolymers based on monodisperse aromatic poly(N-methyl benzamide) and poly(propylene oxide)

Back to tab navigation

Supplementary files

Article information


Submitted
08 May 2017
Accepted
28 Jun 2017
First published
04 Jul 2017

This article is Open Access

RSC Adv., 2017,7, 33812-33821
Article type
Paper

Rapid synthesis and properties of segmented block copolymers based on monodisperse aromatic poly(N-methyl benzamide) and poly(propylene oxide)

T. Mori, S. Masukawa, T. Kikkawa, A. Fujimori, A. Satoh, K. Matsumoto, M. Jikei, Y. Oishi and Y. Shibasaki, RSC Adv., 2017, 7, 33812
DOI: 10.1039/C7RA05161A

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material.

Reproduced material should be attributed as follows:

  • For reproduction of material from NJC:
    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
  • For reproduction of material from PCCP:
    [Original citation] - Published by the PCCP Owner Societies.
  • For reproduction of material from PPS:
    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
  • For reproduction of material from all other RSC journals:
    [Original citation] - Published by The Royal Society of Chemistry.

Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.


Social activity

Search articles by author

Spotlight

Advertisements