Interplay of electrolyte concentration and molecular weight of polyDADMAC on cellulose surface adsorption

Carina Sampl; Jana Schaubeder; Ulrich Hirn; Stefan Spirk

doi:10.1016/j.ijbiomac.2023.124286

Interplay of electrolyte concentration and molecular weight of polyDADMAC on cellulose surface adsorption

Carina Sampl, Jana Schaubeder, Ulrich Hirn^*, Stefan Spirk

^*Korrespondierende/r Autor/-in für diese Arbeit

Institut für Biobasierte Produkte und Papiertechnik (6610)

Publikation: Beitrag in einer Fachzeitschrift › Artikel › Begutachtung

Abstract

Cationic polyelectrolytes (PEs) are commonly used additives in manufacturing of cellulose based products such as regenerated fibers and paper to tailor their product properties. Here we are studying the adsorption of poly(diallyldimethylammonium chloride), PD, on cellulose, using in situ surface plasmon resonance spectroscopy (SPR) measurements. We employ model surfaces from regenerated cellulose xanthate (CX) and trimethylsilyl cellulose (TMSC), mimicking industrially relevant regenerated cellulose substrates. The effects of the PDs molecular weight were strongly depending on the ionic strength and type of electrolyte (NaCl vs CaCl₂). Without electrolytes, the adsorption was monolayer-type, i.e. independent of molecular weight. At moderate ionic strength, adsorption increased due to more pronounced PE coiling, while at high ionic strength electrostatic shielding strongly reduced adsorption of PDs. Results exhibited pronounced differences for the chosen substrates (cellulose regenerated from xanthate (CX_reg) vs. regenerated from trimethylsilyl cellulose, TMSC_reg). Consistently higher adsorbed amounts of the PD were determined on CX_reg surfaces compared TMSC. This can be attributed to a more negative zeta potential, a higher AFM roughness and a higher degree of swelling (investigated by QCM-D) of the CX_reg substrates.

Originalsprache	englisch
Aufsatznummer	124286
Fachzeitschrift	International Journal of Biological Macromolecules
Jahrgang	239
Frühes Online-Datum	1 Apr. 2023
DOIs	https://doi.org/10.1016/j.ijbiomac.2023.124286
Publikationsstatus	Veröffentlicht - 1 Juni 2023

ASJC Scopus subject areas

Strukturelle Biologie
Biochemie
Molekularbiologie

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10.1016/j.ijbiomac.2023.124286Lizenz: CC BY 4.0

1-s2.0-S0141813023011807-mainEndgültige, publizierte Fassung, 4,14 MBLizenz: CC BY 4.0

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CD-Labor für Faserquellung und deren Effekt auf die Papiereigenschaften
Hirn, U. (Teilnehmer (Co-Investigator)), Lahti, J. A. (Teilnehmer (Co-Investigator)), Schennach, E. (Teilnehmer (Co-Investigator)), Fischer, W. J. (Teilnehmer (Co-Investigator)), Czibula, C. M. (Teilnehmer (Co-Investigator)), Urstöger, G. J. (Teilnehmer (Co-Investigator)), Ganser, C. (Teilnehmer (Co-Investigator)), Schuller, M. (Teilnehmer (Co-Investigator)), Krainer, S. (Teilnehmer (Co-Investigator)), Xhori, R. (Teilnehmer (Co-Investigator)), Spirk, S. (Teilnehmer (Co-Investigator)) & Niegelhell, K. (Teilnehmer (Co-Investigator))
1/12/15 → 30/11/23
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title = "Interplay of electrolyte concentration and molecular weight of polyDADMAC on cellulose surface adsorption",

abstract = "Cationic polyelectrolytes (PEs) are commonly used additives in manufacturing of cellulose based products such as regenerated fibers and paper to tailor their product properties. Here we are studying the adsorption of poly(diallyldimethylammonium chloride), PD, on cellulose, using in situ surface plasmon resonance spectroscopy (SPR) measurements. We employ model surfaces from regenerated cellulose xanthate (CX) and trimethylsilyl cellulose (TMSC), mimicking industrially relevant regenerated cellulose substrates. The effects of the PDs molecular weight were strongly depending on the ionic strength and type of electrolyte (NaCl vs CaCl2). Without electrolytes, the adsorption was monolayer-type, i.e. independent of molecular weight. At moderate ionic strength, adsorption increased due to more pronounced PE coiling, while at high ionic strength electrostatic shielding strongly reduced adsorption of PDs. Results exhibited pronounced differences for the chosen substrates (cellulose regenerated from xanthate (CXreg) vs. regenerated from trimethylsilyl cellulose, TMSCreg). Consistently higher adsorbed amounts of the PD were determined on CXreg surfaces compared TMSC. This can be attributed to a more negative zeta potential, a higher AFM roughness and a higher degree of swelling (investigated by QCM-D) of the CXreg substrates.",

keywords = "Cellulose xanthate, Polyelectrolyte, surface plasmon resonance, Quartz crystal microbalance with dissipation, Regenerated cellulose model films, Trimethylsilyl cellulose",

author = "Carina Sampl and Jana Schaubeder and Ulrich Hirn and Stefan Spirk",

note = "Publisher Copyright: {\textcopyright} 2023",

year = "2023",

month = jun,

day = "1",

doi = "10.1016/j.ijbiomac.2023.124286",

language = "English",

volume = "239",

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T1 - Interplay of electrolyte concentration and molecular weight of polyDADMAC on cellulose surface adsorption

AU - Sampl, Carina

AU - Schaubeder, Jana

AU - Hirn, Ulrich

AU - Spirk, Stefan

PY - 2023/6/1

Y1 - 2023/6/1

N2 - Cationic polyelectrolytes (PEs) are commonly used additives in manufacturing of cellulose based products such as regenerated fibers and paper to tailor their product properties. Here we are studying the adsorption of poly(diallyldimethylammonium chloride), PD, on cellulose, using in situ surface plasmon resonance spectroscopy (SPR) measurements. We employ model surfaces from regenerated cellulose xanthate (CX) and trimethylsilyl cellulose (TMSC), mimicking industrially relevant regenerated cellulose substrates. The effects of the PDs molecular weight were strongly depending on the ionic strength and type of electrolyte (NaCl vs CaCl2). Without electrolytes, the adsorption was monolayer-type, i.e. independent of molecular weight. At moderate ionic strength, adsorption increased due to more pronounced PE coiling, while at high ionic strength electrostatic shielding strongly reduced adsorption of PDs. Results exhibited pronounced differences for the chosen substrates (cellulose regenerated from xanthate (CXreg) vs. regenerated from trimethylsilyl cellulose, TMSCreg). Consistently higher adsorbed amounts of the PD were determined on CXreg surfaces compared TMSC. This can be attributed to a more negative zeta potential, a higher AFM roughness and a higher degree of swelling (investigated by QCM-D) of the CXreg substrates.

AB - Cationic polyelectrolytes (PEs) are commonly used additives in manufacturing of cellulose based products such as regenerated fibers and paper to tailor their product properties. Here we are studying the adsorption of poly(diallyldimethylammonium chloride), PD, on cellulose, using in situ surface plasmon resonance spectroscopy (SPR) measurements. We employ model surfaces from regenerated cellulose xanthate (CX) and trimethylsilyl cellulose (TMSC), mimicking industrially relevant regenerated cellulose substrates. The effects of the PDs molecular weight were strongly depending on the ionic strength and type of electrolyte (NaCl vs CaCl2). Without electrolytes, the adsorption was monolayer-type, i.e. independent of molecular weight. At moderate ionic strength, adsorption increased due to more pronounced PE coiling, while at high ionic strength electrostatic shielding strongly reduced adsorption of PDs. Results exhibited pronounced differences for the chosen substrates (cellulose regenerated from xanthate (CXreg) vs. regenerated from trimethylsilyl cellulose, TMSCreg). Consistently higher adsorbed amounts of the PD were determined on CXreg surfaces compared TMSC. This can be attributed to a more negative zeta potential, a higher AFM roughness and a higher degree of swelling (investigated by QCM-D) of the CXreg substrates.

KW - Cellulose xanthate

KW - Polyelectrolyte, surface plasmon resonance

KW - Quartz crystal microbalance with dissipation

KW - Regenerated cellulose model films

KW - Trimethylsilyl cellulose

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Interplay of electrolyte concentration and molecular weight of polyDADMAC on cellulose surface adsorption

Abstract

ASJC Scopus subject areas

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