Aramid Nanofiber Templated in Situ SNAr Polymerization for Maximizing the Performance of All-Organic Nanocomposites

Seul A. Park; Youngho Eom; Hyeonyeol Jeon; Jun Mo Koo; Taehyung Kim; Jaemin Jeon; Moon Jeong Park; Sung Yeon Hwang; Byeong Su Kim; Dongyeop X. Oh; Jeyoung Park

doi:10.1021/acsmacrolett.0c00156

Aramid Nanofiber Templated in Situ S_NAr Polymerization for Maximizing the Performance of All-Organic Nanocomposites

Seul A. Park, Youngho Eom, Hyeonyeol Jeon, Jun Mo Koo, Taehyung Kim, Jaemin Jeon, Moon Jeong Park, Sung Yeon Hwang, Byeong Su Kim, Dongyeop X. Oh, Jeyoung Park

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

28 Scopus citations

Abstract

The performance limits of conventional super engineering plastics with inorganic nanofillers are surpassed by all-organic nanocomposites prepared via in situ S_NAr polymerization of polysulfone (PSU) in the presence of a highly dispersed aramid nanofiber (ANF) solution. The latter is directly used, bypassing the energy-consuming, nanostructure-damaging workup process. Using only a 0.15 wt % nanofiller, the all-organic nanocomposite shows an ultimate tensile strength 1.6× higher and 3.4× tougher than neat PSU and its blending counterpart due to the mutually interactive filler and maximally homogenized matrix. The exceptional toughness of the ANF/PSU nanocomposite originates from the grafted PSU on the surface of ANF; it drives stress-delocalized deformation, as revealed by stress-absorbable viscoelastic behavior and ductile elongation of materials. This material is a promising candidate for use as a filler-interactive, high-performance nanocomposite.

Original language	English
Pages (from-to)	558-564
Number of pages	7
Journal	ACS Macro Letters
Volume	9
Issue number	4
DOIs	https://doi.org/10.1021/acsmacrolett.0c00156
State	Published - 21 Apr 2020
Externally published	Yes

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Copyright © 2020 American Chemical Society.

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title = "Aramid Nanofiber Templated in Situ SNAr Polymerization for Maximizing the Performance of All-Organic Nanocomposites",

abstract = "The performance limits of conventional super engineering plastics with inorganic nanofillers are surpassed by all-organic nanocomposites prepared via in situ SNAr polymerization of polysulfone (PSU) in the presence of a highly dispersed aramid nanofiber (ANF) solution. The latter is directly used, bypassing the energy-consuming, nanostructure-damaging workup process. Using only a 0.15 wt % nanofiller, the all-organic nanocomposite shows an ultimate tensile strength 1.6× higher and 3.4× tougher than neat PSU and its blending counterpart due to the mutually interactive filler and maximally homogenized matrix. The exceptional toughness of the ANF/PSU nanocomposite originates from the grafted PSU on the surface of ANF; it drives stress-delocalized deformation, as revealed by stress-absorbable viscoelastic behavior and ductile elongation of materials. This material is a promising candidate for use as a filler-interactive, high-performance nanocomposite.",

author = "Park, {Seul A.} and Youngho Eom and Hyeonyeol Jeon and Koo, {Jun Mo} and Taehyung Kim and Jaemin Jeon and Park, {Moon Jeong} and Hwang, {Sung Yeon} and Kim, {Byeong Su} and Oh, {Dongyeop X.} and Jeyoung Park",

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doi = "10.1021/acsmacrolett.0c00156",

language = "English",

volume = "9",

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T1 - Aramid Nanofiber Templated in Situ SNAr Polymerization for Maximizing the Performance of All-Organic Nanocomposites

AU - Park, Seul A.

AU - Eom, Youngho

AU - Jeon, Hyeonyeol

AU - Koo, Jun Mo

AU - Kim, Taehyung

AU - Jeon, Jaemin

AU - Park, Moon Jeong

AU - Hwang, Sung Yeon

AU - Kim, Byeong Su

AU - Oh, Dongyeop X.

AU - Park, Jeyoung

PY - 2020/4/21

Y1 - 2020/4/21

N2 - The performance limits of conventional super engineering plastics with inorganic nanofillers are surpassed by all-organic nanocomposites prepared via in situ SNAr polymerization of polysulfone (PSU) in the presence of a highly dispersed aramid nanofiber (ANF) solution. The latter is directly used, bypassing the energy-consuming, nanostructure-damaging workup process. Using only a 0.15 wt % nanofiller, the all-organic nanocomposite shows an ultimate tensile strength 1.6× higher and 3.4× tougher than neat PSU and its blending counterpart due to the mutually interactive filler and maximally homogenized matrix. The exceptional toughness of the ANF/PSU nanocomposite originates from the grafted PSU on the surface of ANF; it drives stress-delocalized deformation, as revealed by stress-absorbable viscoelastic behavior and ductile elongation of materials. This material is a promising candidate for use as a filler-interactive, high-performance nanocomposite.

AB - The performance limits of conventional super engineering plastics with inorganic nanofillers are surpassed by all-organic nanocomposites prepared via in situ SNAr polymerization of polysulfone (PSU) in the presence of a highly dispersed aramid nanofiber (ANF) solution. The latter is directly used, bypassing the energy-consuming, nanostructure-damaging workup process. Using only a 0.15 wt % nanofiller, the all-organic nanocomposite shows an ultimate tensile strength 1.6× higher and 3.4× tougher than neat PSU and its blending counterpart due to the mutually interactive filler and maximally homogenized matrix. The exceptional toughness of the ANF/PSU nanocomposite originates from the grafted PSU on the surface of ANF; it drives stress-delocalized deformation, as revealed by stress-absorbable viscoelastic behavior and ductile elongation of materials. This material is a promising candidate for use as a filler-interactive, high-performance nanocomposite.

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Aramid Nanofiber Templated in Situ S_NAr Polymerization for Maximizing the Performance of All-Organic Nanocomposites

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