pH-Controlled network formation in a mixture of oppositely charged cellulose nanocrystals and poly(allylamine)

Patrick Martin; Gleb Vasilyev; Guang Chu; Mor Boas; Arkadii Arinstein; Eyal Zussman

doi:https://doi.org/10.1002/polb.24898

pH-Controlled network formation in a mixture of oppositely charged cellulose nanocrystals and poly(allylamine)

Patrick Martin, Gleb Vasilyev, Guang Chu, Mor Boas, Arkadii Arinstein, Eyal Zussman

Technion - Israel Institute of Technology

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

Abstract

The behavior of a mixture of negatively charged cellulose nanocrystals (CNCs) and positively charged poly(allylamine) (PAAm) is examined in aqueous media. By modulating the pH, the acting Coulomb forces can be varied that can lead not only to adsorption of PAAm chains on the CNC surface but also to the development of a supermolecular structure by bridging of CNC rods by extended PAAm chains. This bridging can result in the formation of CNC clusters, which was demonstrated experimentally. Light scattering and rheological studies showed that these clusters begin to grow and merge, ultimately forming a global percolated network above a critical degree of PAAm ionization.

Original language	English
Pages (from-to)	1527-1536
Number of pages	10
Journal	Journal of Polymer Science, Part B: Polymer Physics
Volume	57
Issue number	22
DOIs	https://doi.org/10.1002/polb.24898
State	Published - 15 Nov 2019

Keywords

cellulose nanocrystal
charged nanoparticle
hydrogel
polyelectrolyte
polyelectrolyte complex

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Physical and Theoretical Chemistry
Polymers and Plastics
Materials Chemistry

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title = "pH-Controlled network formation in a mixture of oppositely charged cellulose nanocrystals and poly(allylamine)",

abstract = "The behavior of a mixture of negatively charged cellulose nanocrystals (CNCs) and positively charged poly(allylamine) (PAAm) is examined in aqueous media. By modulating the pH, the acting Coulomb forces can be varied that can lead not only to adsorption of PAAm chains on the CNC surface but also to the development of a supermolecular structure by bridging of CNC rods by extended PAAm chains. This bridging can result in the formation of CNC clusters, which was demonstrated experimentally. Light scattering and rheological studies showed that these clusters begin to grow and merge, ultimately forming a global percolated network above a critical degree of PAAm ionization.",

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TY - JOUR

T1 - pH-Controlled network formation in a mixture of oppositely charged cellulose nanocrystals and poly(allylamine)

AU - Martin, Patrick

AU - Vasilyev, Gleb

AU - Chu, Guang

AU - Boas, Mor

AU - Arinstein, Arkadii

AU - Zussman, Eyal

PY - 2019/11/15

Y1 - 2019/11/15

N2 - The behavior of a mixture of negatively charged cellulose nanocrystals (CNCs) and positively charged poly(allylamine) (PAAm) is examined in aqueous media. By modulating the pH, the acting Coulomb forces can be varied that can lead not only to adsorption of PAAm chains on the CNC surface but also to the development of a supermolecular structure by bridging of CNC rods by extended PAAm chains. This bridging can result in the formation of CNC clusters, which was demonstrated experimentally. Light scattering and rheological studies showed that these clusters begin to grow and merge, ultimately forming a global percolated network above a critical degree of PAAm ionization.

AB - The behavior of a mixture of negatively charged cellulose nanocrystals (CNCs) and positively charged poly(allylamine) (PAAm) is examined in aqueous media. By modulating the pH, the acting Coulomb forces can be varied that can lead not only to adsorption of PAAm chains on the CNC surface but also to the development of a supermolecular structure by bridging of CNC rods by extended PAAm chains. This bridging can result in the formation of CNC clusters, which was demonstrated experimentally. Light scattering and rheological studies showed that these clusters begin to grow and merge, ultimately forming a global percolated network above a critical degree of PAAm ionization.

KW - cellulose nanocrystal

KW - charged nanoparticle

KW - hydrogel

KW - polyelectrolyte

KW - polyelectrolyte complex

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U2 - https://doi.org/10.1002/polb.24898

DO - https://doi.org/10.1002/polb.24898

M3 - مقالة

SN - 0887-6266

VL - 57

SP - 1527

EP - 1536

JO - Journal of Polymer Science, Part B: Polymer Physics

JF - Journal of Polymer Science, Part B: Polymer Physics

IS - 22

ER -

pH-Controlled network formation in a mixture of oppositely charged cellulose nanocrystals and poly(allylamine)

Abstract

Keywords

All Science Journal Classification (ASJC) codes

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