Hydrophilic/hydrophobic character of grafted cellulose

Takács, Erzsébet; Wojnárovits, László; Borsa, Judit; Rácz, Ilona

doi:10.1016/j.radphyschem.2009.09.012

Cited by 23 publications

(9 citation statements)

References 16 publications

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“…However, incorporation of N,N 0 -methylenebisacrylamide crosslinking molecules results in considerable decrease in swelling. Samples with reduced hydrophilicity can be used as reinforcing materials in polymer composites (Taká cs et al, 2010). Grafting cellulose-based materials with hydrophobic-type monomers has been suggested for items belonging to the field of cultural heritage (e.g.…”

Section: Characterization Of the Grafted Materialsmentioning

confidence: 99%

Radiation-induced grafting of cellulose for adsorption of hazardous water pollutants: A review

Wojnárovits

Földváry

Takács

2010

Radiation Physics and Chemistry

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186

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Section: Characterization Of the Grafted Materialsmentioning

confidence: 99%

Radiation-induced grafting of cellulose for adsorption of hazardous water pollutants: A review

Wojnárovits

Földváry

Takács

2010

Radiation Physics and Chemistry

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186

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“…They can be oxidized to –C=O, –CHO and –COOH or reduced to hydrocarbons depending on the aim of the application [5–7]. Physically, these –OH groups make cellulose hydrophilic [8]. In addition, these –OH groups facilitate binding between cellulose fibers strands in wood pulp via intermolecular hydrogen bonding.…”

Section: Introductionmentioning

confidence: 99%

Topochemical engineering of composite hybrid fibers using layered double hydroxides and abietic acid

Sobhana¹,

Kesavan²,

Gustafsson³

et al. 2019

Beilstein J. Nanotechnol.

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Topochemical engineering of hybrid materials is an efficient way of synthesizing hydrophobic and highly tensile fiber composites by utilizing the intermolecular hydrogen bonds in natural materials. These materials include wood pulp fibers, abietic acid (resin acid) and inexpensive metal salts. In this work, a hybrid composite was created using bleached and unbleached kraft pulp fibers as cellulose platform. In situ co-precipitation of layered double hydroxide (LDH) was performed to grow LDH crystals on the surface of the cellulose fibers, followed by the immobilization of abietic acid (AA) on LDH-grafted cellulose. Here we aimed to benefit from the hydrogen bonding between –OH groups of cellulose and LDH, and the –COOH groups of AA to obtain charge-directed assembly of one material on the other material. Thus, composite hybrid fibers (C-HF) were produced and then characterized by optical (CAM), spectroscopic (XRD, IR) and microscopic techniques (SEM) to determine their average length and distribution, structure and purity, bonding, and morphology. These fibers further were tested for water contact angle (hydrophobicity), oil absorption (lipophilicity), tensile strength and ISO brightness measurements. The performance of C-HF was compared with unmodified reference fibers (REF), fibers composed with only AA (C-F) and LDH-hybridized fibers (HF). The results revealed a variety of correlations between materials and their properties due to characteristic surface morphology, functional groups, hydrogen bonding and natural co-materials such as lignin and hemicelluloses. Attractive and repulsive van der Waals forces between material entities play a crucial role in the resulting properties.

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“…Consequently, the work presented here focuses on the widely employed "grafting-from" free radical graft copolymerization of cellulose with acrylic compounds. Many studies have reported cellulose graft copolymerization with acrylic compounds [17][18][19][20][21][22][23] . Cellulose modifications have usually been performed under harsh conditions, in organic solvent or with highly toxic compounds so far [17][18][19]21 .…”

Section: Introductionmentioning

confidence: 99%

“…Many studies have reported cellulose graft copolymerization with acrylic compounds [17][18][19][20][21][22][23] . Cellulose modifications have usually been performed under harsh conditions, in organic solvent or with highly toxic compounds so far [17][18][19]21 . Besides graft polymerization most often implements long-lasting, complex and / or expensive procedures such as ATRP (Atom Transfer Radical Polymerization) 17 , RAFT (Reversible Addition-Fragmentation chain Transfer polymerization) 20 and gamma irradiation initiation step 18,20,21 .…”

Section: Introductionmentioning

confidence: 99%

“…[17][18][19][20][21][22][23] Cellulose modications have usually been performed under harsh conditions, in organic solvent or with highly toxic compounds so far. [17][18][19]21 Besides gra polymerization most oen implements long-lasting, complex and/or expensive procedures such as ATRP (Atom Transfer Radical Polymerization), 17 RAFT (Reversible Addition-Fragmentation chain Transfer polymerization) 20 and gamma irradiation initiation step. 18,20,21 To the best of our knowledge, no cellulose modication has been done in a rather short onestep reaction and under so conditions, i.e.…”

Section: Introductionmentioning

confidence: 99%

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One-step and eco-friendly modification of cellulose membranes by polymer grafting

2014

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International audienceThe increasing environmental awareness has stimulated the use of bio-based materials and processes. As an affordable and sustainable biopolymer, cellulose is an ideal engineering material. Beyond paper, cellulose finds applications in many areas such as composites, electronics and drug delivery. To fulfil these new functions, cellulose needs to acquire new properties, which is commonly done by graft polymerization of acrylic compounds. While cellulose modification is usually performed through complex and expensive procedures, the diazonium-based polymer grafting procedure presented here was performed in water, at room temperature, in a short single step. Cellulose sheets have been successfully grafted with several acrylic polymers, first globally through a dipping procedure and then locally by inkjet printing. The process developed herein is simple, eco-friendly and mostly time and cost-saving. More generally, it is a powerful tool for easy, robust and patterned graft copolymerization of cellulose sheets with various acrylic monomers and even bio-based monomer

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Hydrophilic/hydrophobic character of grafted cellulose

Cited by 23 publications

References 16 publications

Radiation-induced grafting of cellulose for adsorption of hazardous water pollutants: A review

Radiation-induced grafting of cellulose for adsorption of hazardous water pollutants: A review

Topochemical engineering of composite hybrid fibers using layered double hydroxides and abietic acid

One-step and eco-friendly modification of cellulose membranes by polymer grafting

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