Effects of charge ratios of xylan-poly(allylamine hydrochloride) complexes on their adsorption onto different surfaces

María Verónica Galván, María Soledad Peresin (Corresponding Author), Paulina Mocchiutti, Niko Granqvist, Miguel Ángel Zanuttini, Tekla Tammelin

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

The adsorption behavior of polyelectrolyte complexes (PECs) of poly(allylamine hydrochloride) (PAH) and 4-O-methylglucuronoxylan (Xyl) onto silica surface, cellulose nanofibrils (CNFs) model surfaces, and unbleached softwood kraft fibers was studied. Different charge ratios and ionic strengths of the liquid medium (q - /q +: 0.3, 0.5 and 0.8 in 1 mM NaCl, and q - /q +: 0.2, 0.3 and 0.5 in 10 mM NaCl), at pH 7.5 were considered. First, the complexes obtained were characterized by measuring the charge density, the particle size and the zeta potential. Then, the adsorption of PAH alone and PECs on silica and CNF model surfaces were studied by quartz crystal microbalance with dissipation monitoring (QCM-D) and surface plasmon resonance (SPR). The QCM-D test indicated that: (a) adsorbed cationic layers of PECs were soft in 10 mM NaCl, (b) higher adsorption was observed at higher ionic strength and (c) the highest adsorption of complex and coupled water was found at a charge ratio of 0.3. The SPR results analyzed together with the corresponding QCM-D results revealed that a significant portion of the adsorbed layers corresponded to coupled water on the cationic PEC structures. Morphology and structures of the adsorbed PEC layers studied using atomic force microscopy showed that the majority of the PECs were spherical, while some bigger aggregates were also found. Finally, the retention of different PECs on an unbleached softwood pulp was determined and the maximum retention was obtained when the PEC charge ratio was 0.5 in a 10 mM NaCl solution.
Original languageEnglish
Pages (from-to)2955-2970
JournalCellulose
Volume22
Issue number5
DOIs
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

Fingerprint

Xylans
Polyelectrolytes
Adsorption
Quartz crystal microbalances
Softwoods
Surface plasmon resonance
Ionic strength
Cellulose
Silicon Dioxide
Monitoring
Silica
Water
Zeta potential
polyallylamine
Charge density
Pulp
Atomic force microscopy
Particle size
Fibers
Liquids

Keywords

  • Ionic strength
  • Cellulose nanofibrils
  • Unbleached cellulosic fibers
  • QCM-D
  • SPR

Cite this

Galván, María Verónica ; Peresin, María Soledad ; Mocchiutti, Paulina ; Granqvist, Niko ; Zanuttini, Miguel Ángel ; Tammelin, Tekla. / Effects of charge ratios of xylan-poly(allylamine hydrochloride) complexes on their adsorption onto different surfaces. In: Cellulose. 2015 ; Vol. 22, No. 5. pp. 2955-2970.
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title = "Effects of charge ratios of xylan-poly(allylamine hydrochloride) complexes on their adsorption onto different surfaces",
abstract = "The adsorption behavior of polyelectrolyte complexes (PECs) of poly(allylamine hydrochloride) (PAH) and 4-O-methylglucuronoxylan (Xyl) onto silica surface, cellulose nanofibrils (CNFs) model surfaces, and unbleached softwood kraft fibers was studied. Different charge ratios and ionic strengths of the liquid medium (q - /q +: 0.3, 0.5 and 0.8 in 1 mM NaCl, and q - /q +: 0.2, 0.3 and 0.5 in 10 mM NaCl), at pH 7.5 were considered. First, the complexes obtained were characterized by measuring the charge density, the particle size and the zeta potential. Then, the adsorption of PAH alone and PECs on silica and CNF model surfaces were studied by quartz crystal microbalance with dissipation monitoring (QCM-D) and surface plasmon resonance (SPR). The QCM-D test indicated that: (a) adsorbed cationic layers of PECs were soft in 10 mM NaCl, (b) higher adsorption was observed at higher ionic strength and (c) the highest adsorption of complex and coupled water was found at a charge ratio of 0.3. The SPR results analyzed together with the corresponding QCM-D results revealed that a significant portion of the adsorbed layers corresponded to coupled water on the cationic PEC structures. Morphology and structures of the adsorbed PEC layers studied using atomic force microscopy showed that the majority of the PECs were spherical, while some bigger aggregates were also found. Finally, the retention of different PECs on an unbleached softwood pulp was determined and the maximum retention was obtained when the PEC charge ratio was 0.5 in a 10 mM NaCl solution.",
keywords = "Ionic strength, Cellulose nanofibrils, Unbleached cellulosic fibers, QCM-D, SPR",
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language = "English",
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Effects of charge ratios of xylan-poly(allylamine hydrochloride) complexes on their adsorption onto different surfaces. / Galván, María Verónica; Peresin, María Soledad (Corresponding Author); Mocchiutti, Paulina; Granqvist, Niko; Zanuttini, Miguel Ángel; Tammelin, Tekla.

In: Cellulose, Vol. 22, No. 5, 2015, p. 2955-2970.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Effects of charge ratios of xylan-poly(allylamine hydrochloride) complexes on their adsorption onto different surfaces

AU - Galván, María Verónica

AU - Peresin, María Soledad

AU - Mocchiutti, Paulina

AU - Granqvist, Niko

AU - Zanuttini, Miguel Ángel

AU - Tammelin, Tekla

PY - 2015

Y1 - 2015

N2 - The adsorption behavior of polyelectrolyte complexes (PECs) of poly(allylamine hydrochloride) (PAH) and 4-O-methylglucuronoxylan (Xyl) onto silica surface, cellulose nanofibrils (CNFs) model surfaces, and unbleached softwood kraft fibers was studied. Different charge ratios and ionic strengths of the liquid medium (q - /q +: 0.3, 0.5 and 0.8 in 1 mM NaCl, and q - /q +: 0.2, 0.3 and 0.5 in 10 mM NaCl), at pH 7.5 were considered. First, the complexes obtained were characterized by measuring the charge density, the particle size and the zeta potential. Then, the adsorption of PAH alone and PECs on silica and CNF model surfaces were studied by quartz crystal microbalance with dissipation monitoring (QCM-D) and surface plasmon resonance (SPR). The QCM-D test indicated that: (a) adsorbed cationic layers of PECs were soft in 10 mM NaCl, (b) higher adsorption was observed at higher ionic strength and (c) the highest adsorption of complex and coupled water was found at a charge ratio of 0.3. The SPR results analyzed together with the corresponding QCM-D results revealed that a significant portion of the adsorbed layers corresponded to coupled water on the cationic PEC structures. Morphology and structures of the adsorbed PEC layers studied using atomic force microscopy showed that the majority of the PECs were spherical, while some bigger aggregates were also found. Finally, the retention of different PECs on an unbleached softwood pulp was determined and the maximum retention was obtained when the PEC charge ratio was 0.5 in a 10 mM NaCl solution.

AB - The adsorption behavior of polyelectrolyte complexes (PECs) of poly(allylamine hydrochloride) (PAH) and 4-O-methylglucuronoxylan (Xyl) onto silica surface, cellulose nanofibrils (CNFs) model surfaces, and unbleached softwood kraft fibers was studied. Different charge ratios and ionic strengths of the liquid medium (q - /q +: 0.3, 0.5 and 0.8 in 1 mM NaCl, and q - /q +: 0.2, 0.3 and 0.5 in 10 mM NaCl), at pH 7.5 were considered. First, the complexes obtained were characterized by measuring the charge density, the particle size and the zeta potential. Then, the adsorption of PAH alone and PECs on silica and CNF model surfaces were studied by quartz crystal microbalance with dissipation monitoring (QCM-D) and surface plasmon resonance (SPR). The QCM-D test indicated that: (a) adsorbed cationic layers of PECs were soft in 10 mM NaCl, (b) higher adsorption was observed at higher ionic strength and (c) the highest adsorption of complex and coupled water was found at a charge ratio of 0.3. The SPR results analyzed together with the corresponding QCM-D results revealed that a significant portion of the adsorbed layers corresponded to coupled water on the cationic PEC structures. Morphology and structures of the adsorbed PEC layers studied using atomic force microscopy showed that the majority of the PECs were spherical, while some bigger aggregates were also found. Finally, the retention of different PECs on an unbleached softwood pulp was determined and the maximum retention was obtained when the PEC charge ratio was 0.5 in a 10 mM NaCl solution.

KW - Ionic strength

KW - Cellulose nanofibrils

KW - Unbleached cellulosic fibers

KW - QCM-D

KW - SPR

U2 - 10.1007/s10570-015-0706-z

DO - 10.1007/s10570-015-0706-z

M3 - Article

VL - 22

SP - 2955

EP - 2970

JO - Cellulose

JF - Cellulose

SN - 0969-0239

IS - 5

ER -