Sustainable barrier materials based on polysaccharide polyelectrolyte complexes

Basu, Snehasish; Plucinski, Adam Ross; Catchmark, Jeffrey M.

doi:10.1039/c7gc00991g

Cited by 37 publications

(36 citation statements)

References 37 publications

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“…The effect has also been shown to enhance material strength and durability. 58 At low pH with the treatment of formic acid, the amino groups of both chitosan and SP were protonated and positively charged, causing electrostatic repulsion between the polymer chains and thus enabling polymer solvation. Considering the rather low isoelectric point of SP (< pH 2.8) 59 (also Figure S7), the increased pH with NaOH treatment would make SP become negatively charged, and thus induced electrostatic interactions with the positively charged chitosan.…”

Section: Resultsmentioning

confidence: 99%

“…We propose that the enhanced mechanical properties are attributed to both the strong intermolecular electrostatic interactions and intermolecular hydrogen bonding between the two polysaccharides. , In addition to increasing intermolecular hydrogen bonding between chitosan and SF, ,− electrostatic complexation of chitosan and SP also play an important role in the biphasic interactions of dissimilar biopolymers. The effect has also been shown to enhance material strength and durability . At low pH with the treatment of formic acid, the amino groups of both chitosan and SP were protonated and positively charged, causing electrostatic repulsion between the polymer chains and thus enabling polymer solvation.…”

Section: Resultsmentioning

confidence: 99%

“…the matched numbers of anionic groups of SP and cationic groups of chitosan,58 leading to maximized hydrogen bonding interactions and thus mostly enhanced material performance.…”

mentioning

confidence: 99%

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Natural Biopolymer Alloys with Superior Mechanical Properties

Meng

Xie

Zhang

et al. 2018

ACS Sustainable Chem. Eng.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Natural Biopolymer Alloys with Superior Mechanical Properties

Meng

Xie

Zhang

et al. 2018

ACS Sustainable Chem. Eng.

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“…Thus, polyelectrolyte complexation (PEC) can occur between CMC and the chitosan polycation. Based on PEC, biopolymer materials have been fabricated with superior properties that single biopolymers cannot realise, such as hydrolytic stability [ 13 ], barrier properties [ 14 ], mechanical properties [ 15 , 16 , 17 ], and cell adhesiveness [ 18 ]. An ionic liquid (IL) was used as a plasticiser for the biopolymer systems described here.…”

Section: Introductionmentioning

confidence: 99%

Cooperative Effects of Cellulose Nanocrystals and Sepiolite When Combined on Ionic Liquid Plasticised Chitosan Materials

et al. 2021

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Cellulose nanocrystals (CNCs) and/or sepiolite (SPT) were thermomechanically mixed with un-plasticised chitosan and chitosan/carboxymethyl cellulose (CMC) blends plasticised with 1-ethyl-3-methylimidazolium acetate ([C2mim][OAc]). Examination of the morphology of these materials indicates that SPT aggregates were reduced when CNCs or [C2mim][OAc] were present. Inclusion of CNCs and/or SPT had a greater effect on material properties when the matrices were un-plasticised. Addition of SPT or CNCs altered the crystalline structure of the un-plasticised chitosan matrix. Moreover, a combination of SPT and CNCs was more effective at suppressing re-crystallisation. Nonetheless, the mechanical properties and surface hydrophobicity were more related to CNC/SPT–biopolymer interactions. The un-plasticised bionanocomposites generally showed increased relaxation temperatures, enhanced tensile strength, and reduced surface wettability. For the [C2mim][OAc] plasticised matrices, the ionic liquid (IL) dominates the interactions with the biopolymers such that the effect of the nanofillers is diminished. However, for the [C2mim][OAc] plasticised chitosan/CMC matrix, CNCs and SPT acted synergistically suppressing re-crystallisation but resulting in increased tensile strength.

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“…The presence of carboxylate groups along the chain promotes the solubility of CMC in water, which, together with the low cost and advantageous properties of polysaccharides (such as biodegradability, biocompatibility, and mucous adhesion), has been used in a variety of industrial applications, as in the food, cosmetic, pharmaceutical and oil industries [8]. Comparing the mechanical properties of polyelectrolytic complexes formed by the combination of CMC with other polymers, there was an improvement in the modulus of elasticity tensile strength [9], i.e., being interesting for investigation as blends with other polymers.…”

Section: Introductionmentioning

confidence: 99%

3D printing by additive manufacture of hydrogel containing caffeic acid

Segundo¹,

Corzo²,

Moraes³

et al. 2021

IJAERS

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In this work, 3D extrusion-based printing head was used to produce 3D geometry of hydrogel containing caffeic acid (CA). The hydrogel was prepared with 10wt.% polyvinylpyrrolidone (PVP) and 3wt.% sodium carboxymethylcellulose (CMC) using deionized water as solvent (PVP-CMC hydrogel), likewise the PVP-CMC hydrogel containing CA was prepared but was added 2wt.% CA (PVP-CA-CMC hydrogel). The rheological properties of the hydrogels were obtained using a modular rheometer with plate-plate geometry. The PVP-CMC hydrogel presented shear-thinning flow behavior and the adding of CA did not affect its rheological behavior. The power-law model described the shear-thinning curves of the hydrogels. Frequency sweep tests demonstrated that the PVP-CMC and PVP-CA-CMC hydrogels presented a physical gelation characteristic of the solid behaviors. The IR spectroscopy chemically characterized the hydrogel, indicating by carbonyl peaks a good intermolecular interaction between the functional groups. Therefore, we demonstrated the printing capacity of the PVP-CMC inks with caffeic acid, which makes it interesting to additive manufacture field. I. is linked to cell biology and materials science [5].Compared with other manufacturing techniques where João de Deus Pereira et al.

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Sustainable barrier materials based on polysaccharide polyelectrolyte complexes

Abstract: There is a need for sustainable, ecologically compatible barrier materials as a replacement for petroleum derived compounds for packaging and other applications that generate significant land and ocean pollution.

Cited by 37 publications

References 37 publications

Natural Biopolymer Alloys with Superior Mechanical Properties

Natural Biopolymer Alloys with Superior Mechanical Properties

Cooperative Effects of Cellulose Nanocrystals and Sepiolite When Combined on Ionic Liquid Plasticised Chitosan Materials

3D printing by additive manufacture of hydrogel containing caffeic acid

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