Modifying an amorphous polymer to a fast crystallizing semi-crystalline material by copolymerization with monodisperse amide segments

R. Stephen

Research output: Contribution to journalArticleAcademic

7 Citations (Scopus)

Abstract

Segmented block copolymers of polysulphone with monodisperse amide segments were synthesized by a melt and a solution polymerization method. Both triblock and multiblock copolymers were prepared. The length of the difunctional polysulphone was varied from 2000 to 20,000 g/mol. The monodisperse amide segment was the tetra-amide T6T6T based on terephthalic acid (T) and hexamethylene diamine (6) units. The main goal of this work was to study if the high Tg amorphous polysulphone could be modified to a high Tg semi-crystalline PSU-T6T6T copolymer. The copolymers were characterized by viscosity measurements, NMR, FTIR, MALDI-TOF, DSC, and DMA. Depending on the amide concentration in the copolymers the T6T6T melting temperatures ranged between 220 and 270 °C and thus the crystallization window was small 50–100 °C. From the FTIR results, it was revealed that the crystallinity of the T6T6T segments in the copolymer could be very high, up to 92–97%. The T6T6T has crystallized out into nanoribbons with a high aspect ratio. These high Tg semi-crystalline copolymers had a high dimensional and solvent resistance.
Original languageUndefined
Pages (from-to)63-73
JournalJournal of polymer science. Part A: Polymer chemistry
Volume48
Issue number1
DOIs
Publication statusPublished - 2009

Keywords

  • polysulphone
  • polyamide
  • Monodisperse
  • Copolymerization
  • poly(ether sulfones)
  • solvent stability
  • triblock
  • Block copolymers
  • high temperature materials
  • Crystallization
  • dimensional stability
  • IR-72638
  • multiblock

Cite this

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title = "Modifying an amorphous polymer to a fast crystallizing semi-crystalline material by copolymerization with monodisperse amide segments",
abstract = "Segmented block copolymers of polysulphone with monodisperse amide segments were synthesized by a melt and a solution polymerization method. Both triblock and multiblock copolymers were prepared. The length of the difunctional polysulphone was varied from 2000 to 20,000 g/mol. The monodisperse amide segment was the tetra-amide T6T6T based on terephthalic acid (T) and hexamethylene diamine (6) units. The main goal of this work was to study if the high Tg amorphous polysulphone could be modified to a high Tg semi-crystalline PSU-T6T6T copolymer. The copolymers were characterized by viscosity measurements, NMR, FTIR, MALDI-TOF, DSC, and DMA. Depending on the amide concentration in the copolymers the T6T6T melting temperatures ranged between 220 and 270 °C and thus the crystallization window was small 50–100 °C. From the FTIR results, it was revealed that the crystallinity of the T6T6T segments in the copolymer could be very high, up to 92–97{\%}. The T6T6T has crystallized out into nanoribbons with a high aspect ratio. These high Tg semi-crystalline copolymers had a high dimensional and solvent resistance.",
keywords = "polysulphone, polyamide, Monodisperse, Copolymerization, poly(ether sulfones), solvent stability, triblock, Block copolymers, high temperature materials, Crystallization, dimensional stability, IR-72638, multiblock",
author = "R. Stephen",
year = "2009",
doi = "10.1002/pola.23754",
language = "Undefined",
volume = "48",
pages = "63--73",
journal = "Journal of polymer science. Part A: Polymer chemistry",
issn = "0887-624X",
publisher = "Wiley",
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TY - JOUR

T1 - Modifying an amorphous polymer to a fast crystallizing semi-crystalline material by copolymerization with monodisperse amide segments

AU - Stephen, R.

PY - 2009

Y1 - 2009

N2 - Segmented block copolymers of polysulphone with monodisperse amide segments were synthesized by a melt and a solution polymerization method. Both triblock and multiblock copolymers were prepared. The length of the difunctional polysulphone was varied from 2000 to 20,000 g/mol. The monodisperse amide segment was the tetra-amide T6T6T based on terephthalic acid (T) and hexamethylene diamine (6) units. The main goal of this work was to study if the high Tg amorphous polysulphone could be modified to a high Tg semi-crystalline PSU-T6T6T copolymer. The copolymers were characterized by viscosity measurements, NMR, FTIR, MALDI-TOF, DSC, and DMA. Depending on the amide concentration in the copolymers the T6T6T melting temperatures ranged between 220 and 270 °C and thus the crystallization window was small 50–100 °C. From the FTIR results, it was revealed that the crystallinity of the T6T6T segments in the copolymer could be very high, up to 92–97%. The T6T6T has crystallized out into nanoribbons with a high aspect ratio. These high Tg semi-crystalline copolymers had a high dimensional and solvent resistance.

AB - Segmented block copolymers of polysulphone with monodisperse amide segments were synthesized by a melt and a solution polymerization method. Both triblock and multiblock copolymers were prepared. The length of the difunctional polysulphone was varied from 2000 to 20,000 g/mol. The monodisperse amide segment was the tetra-amide T6T6T based on terephthalic acid (T) and hexamethylene diamine (6) units. The main goal of this work was to study if the high Tg amorphous polysulphone could be modified to a high Tg semi-crystalline PSU-T6T6T copolymer. The copolymers were characterized by viscosity measurements, NMR, FTIR, MALDI-TOF, DSC, and DMA. Depending on the amide concentration in the copolymers the T6T6T melting temperatures ranged between 220 and 270 °C and thus the crystallization window was small 50–100 °C. From the FTIR results, it was revealed that the crystallinity of the T6T6T segments in the copolymer could be very high, up to 92–97%. The T6T6T has crystallized out into nanoribbons with a high aspect ratio. These high Tg semi-crystalline copolymers had a high dimensional and solvent resistance.

KW - polysulphone

KW - polyamide

KW - Monodisperse

KW - Copolymerization

KW - poly(ether sulfones)

KW - solvent stability

KW - triblock

KW - Block copolymers

KW - high temperature materials

KW - Crystallization

KW - dimensional stability

KW - IR-72638

KW - multiblock

U2 - 10.1002/pola.23754

DO - 10.1002/pola.23754

M3 - Article

VL - 48

SP - 63

EP - 73

JO - Journal of polymer science. Part A: Polymer chemistry

JF - Journal of polymer science. Part A: Polymer chemistry

SN - 0887-624X

IS - 1

ER -