Cargando…

Preparations of Tough and Conductive PAMPS/PAA Double Network Hydrogels Containing Cellulose Nanofibers and Polypyrroles

To afford an intact double network (sample abbr.: DN) hydrogel, two-step crosslinking reactions of poly(2-acrylamido-2-methylpropanesulfonic acid) (i.e., PAMPS first network) and then poly(acrylic acid) (i.e., PAA second network) were conducted both in the presence of crosslinker (N,N′-methylenebisa...

Descripción completa

Detalles Bibliográficos
Autores principales: Tu, Cheng-Wei, Tsai, Fang-Chang, Chen, Jem-Kun, Wang, Huei-Ping, Lee, Rong-Ho, Zhang, Jiawei, Chen, Tao, Wang, Chung-Chi, Huang, Chih-Feng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7760924/
https://www.ncbi.nlm.nih.gov/pubmed/33260522
http://dx.doi.org/10.3390/polym12122835
_version_ 1783627447428710400
author Tu, Cheng-Wei
Tsai, Fang-Chang
Chen, Jem-Kun
Wang, Huei-Ping
Lee, Rong-Ho
Zhang, Jiawei
Chen, Tao
Wang, Chung-Chi
Huang, Chih-Feng
author_facet Tu, Cheng-Wei
Tsai, Fang-Chang
Chen, Jem-Kun
Wang, Huei-Ping
Lee, Rong-Ho
Zhang, Jiawei
Chen, Tao
Wang, Chung-Chi
Huang, Chih-Feng
author_sort Tu, Cheng-Wei
collection PubMed
description To afford an intact double network (sample abbr.: DN) hydrogel, two-step crosslinking reactions of poly(2-acrylamido-2-methylpropanesulfonic acid) (i.e., PAMPS first network) and then poly(acrylic acid) (i.e., PAA second network) were conducted both in the presence of crosslinker (N,N′-methylenebisacrylamide (MBAA)). Similar to the two-step processes, different contents of 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO) oxidized cellulose nanofibers (TOCN: 1, 2, and 3 wt.%) were initially dispersed in the first network solutions and then crosslinked. The TOCN-containing PAMPS first networks subsequently soaked in AA and crosslinker and conducted the second network crosslinking reactions (TOCN was then abbreviated as T for DN samples). As the third step, various (T–)DN hydrogels were then treated with different concentrations of FeCl(3(aq)) solutions (5, 50, 100, and 200 mM). Through incorporations of ferric ions into (T–)DN hydrogels, notably, three purposes are targeted: (i) strengthen the (T–)DN hydrogels through ionic bonding, (ii) significantly render ionic conductivity of hydrogels, and (iii) serve as a catalyst for the forth step to proceed with in situ chemical oxidative polymerizations of pyrroles to afford polypyrrole-containing (sample abbr.: Py) hydrogels [i.e., (T–)Py–DN samples]. The characteristic functional groups of PAMPS, PAA, and Py were confirmed by FT–IR. Uniform microstructures were observed by cryo scanning electron microscopy (cryo-SEM). These results indicated that homogeneous composites of T–Py–DN hydrogels were obtained through the four-step process. All dry samples showed similar thermal degradation behaviors from the thermogravimetric analysis (TGA). The T(2)–Py(5)–DN sample (i.e., containing 2 wt.% TOCN with 5 mM FeCl(3(aq)) treatment) showed the best tensile strength and strain at breaking properties (i.e., σ(Tb) = 450 kPa and ε(Tb) = 106%). With the same compositions, a high conductivity of 3.34 × 10(−3) S/cm was acquired. The tough T(2)–Py(5)–DN hydrogel displayed good conductive reversibility during several “stretching-and-releasing” cycles of 50–100–0%, demonstrating a promising candidate for bioelectronic or biomaterial applications.
format Online
Article
Text
id pubmed-7760924
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-77609242020-12-26 Preparations of Tough and Conductive PAMPS/PAA Double Network Hydrogels Containing Cellulose Nanofibers and Polypyrroles Tu, Cheng-Wei Tsai, Fang-Chang Chen, Jem-Kun Wang, Huei-Ping Lee, Rong-Ho Zhang, Jiawei Chen, Tao Wang, Chung-Chi Huang, Chih-Feng Polymers (Basel) Article To afford an intact double network (sample abbr.: DN) hydrogel, two-step crosslinking reactions of poly(2-acrylamido-2-methylpropanesulfonic acid) (i.e., PAMPS first network) and then poly(acrylic acid) (i.e., PAA second network) were conducted both in the presence of crosslinker (N,N′-methylenebisacrylamide (MBAA)). Similar to the two-step processes, different contents of 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO) oxidized cellulose nanofibers (TOCN: 1, 2, and 3 wt.%) were initially dispersed in the first network solutions and then crosslinked. The TOCN-containing PAMPS first networks subsequently soaked in AA and crosslinker and conducted the second network crosslinking reactions (TOCN was then abbreviated as T for DN samples). As the third step, various (T–)DN hydrogels were then treated with different concentrations of FeCl(3(aq)) solutions (5, 50, 100, and 200 mM). Through incorporations of ferric ions into (T–)DN hydrogels, notably, three purposes are targeted: (i) strengthen the (T–)DN hydrogels through ionic bonding, (ii) significantly render ionic conductivity of hydrogels, and (iii) serve as a catalyst for the forth step to proceed with in situ chemical oxidative polymerizations of pyrroles to afford polypyrrole-containing (sample abbr.: Py) hydrogels [i.e., (T–)Py–DN samples]. The characteristic functional groups of PAMPS, PAA, and Py were confirmed by FT–IR. Uniform microstructures were observed by cryo scanning electron microscopy (cryo-SEM). These results indicated that homogeneous composites of T–Py–DN hydrogels were obtained through the four-step process. All dry samples showed similar thermal degradation behaviors from the thermogravimetric analysis (TGA). The T(2)–Py(5)–DN sample (i.e., containing 2 wt.% TOCN with 5 mM FeCl(3(aq)) treatment) showed the best tensile strength and strain at breaking properties (i.e., σ(Tb) = 450 kPa and ε(Tb) = 106%). With the same compositions, a high conductivity of 3.34 × 10(−3) S/cm was acquired. The tough T(2)–Py(5)–DN hydrogel displayed good conductive reversibility during several “stretching-and-releasing” cycles of 50–100–0%, demonstrating a promising candidate for bioelectronic or biomaterial applications. MDPI 2020-11-28 /pmc/articles/PMC7760924/ /pubmed/33260522 http://dx.doi.org/10.3390/polym12122835 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Tu, Cheng-Wei
Tsai, Fang-Chang
Chen, Jem-Kun
Wang, Huei-Ping
Lee, Rong-Ho
Zhang, Jiawei
Chen, Tao
Wang, Chung-Chi
Huang, Chih-Feng
Preparations of Tough and Conductive PAMPS/PAA Double Network Hydrogels Containing Cellulose Nanofibers and Polypyrroles
title Preparations of Tough and Conductive PAMPS/PAA Double Network Hydrogels Containing Cellulose Nanofibers and Polypyrroles
title_full Preparations of Tough and Conductive PAMPS/PAA Double Network Hydrogels Containing Cellulose Nanofibers and Polypyrroles
title_fullStr Preparations of Tough and Conductive PAMPS/PAA Double Network Hydrogels Containing Cellulose Nanofibers and Polypyrroles
title_full_unstemmed Preparations of Tough and Conductive PAMPS/PAA Double Network Hydrogels Containing Cellulose Nanofibers and Polypyrroles
title_short Preparations of Tough and Conductive PAMPS/PAA Double Network Hydrogels Containing Cellulose Nanofibers and Polypyrroles
title_sort preparations of tough and conductive pamps/paa double network hydrogels containing cellulose nanofibers and polypyrroles
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7760924/
https://www.ncbi.nlm.nih.gov/pubmed/33260522
http://dx.doi.org/10.3390/polym12122835
work_keys_str_mv AT tuchengwei preparationsoftoughandconductivepampspaadoublenetworkhydrogelscontainingcellulosenanofibersandpolypyrroles
AT tsaifangchang preparationsoftoughandconductivepampspaadoublenetworkhydrogelscontainingcellulosenanofibersandpolypyrroles
AT chenjemkun preparationsoftoughandconductivepampspaadoublenetworkhydrogelscontainingcellulosenanofibersandpolypyrroles
AT wanghueiping preparationsoftoughandconductivepampspaadoublenetworkhydrogelscontainingcellulosenanofibersandpolypyrroles
AT leerongho preparationsoftoughandconductivepampspaadoublenetworkhydrogelscontainingcellulosenanofibersandpolypyrroles
AT zhangjiawei preparationsoftoughandconductivepampspaadoublenetworkhydrogelscontainingcellulosenanofibersandpolypyrroles
AT chentao preparationsoftoughandconductivepampspaadoublenetworkhydrogelscontainingcellulosenanofibersandpolypyrroles
AT wangchungchi preparationsoftoughandconductivepampspaadoublenetworkhydrogelscontainingcellulosenanofibersandpolypyrroles
AT huangchihfeng preparationsoftoughandconductivepampspaadoublenetworkhydrogelscontainingcellulosenanofibersandpolypyrroles