Superhydrophobic modification of cellulose and cotton textiles: Methodologies and applications

Wei, David; Wei, Haiying; Gauthier, Alec C.; Song, Junlong; Jin, Yongcan; Xiao, Huining

doi:10.1016/j.jobab.2020.03.001

Cited by 326 publications

(136 citation statements)

References 69 publications

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“…Various methods of cellulose modification were used to impart hydrophobic properties including impregnation with solutions of hydrophobic substances, surface hydrophobization, chemical modification, etc. [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Adjustment of Hydrophobic Properties of Cellulose Materials

Ioelovich¹

2021

Polymers

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In this study, physicochemical and chemical methods of cellulose modification were used to increase the hydrophobicity of this natural semicrystalline biopolymer. It has been shown that acid hydrolysis of the initial cellulose increases its crystallinity, which improves hydrophobicity, but only to a small extent. A more significant hydrophobization effect was observed after chemical modification by esterification, when polar hydroxyl groups of cellulose were replaced by non-polar substituents. The esterification process was accompanied by the disruption of the crystalline structure of cellulose and its transformation into the mesomorphous structure of cellulose esters. It was found that the replacement of cellulose hydroxyls with ester groups leads to a significant increase in the hydrophobicity of the resulting polymer. Moreover, the increase of the number of non-polar groups in the ester substituent contributes to rise in hydrophobicity of cellulose derivative. Depending on the type of ester group, the hydrophobicity increased in the following order: acetate < propionate < butyrate. Therefore, tributyrate cellulose (TBC) demonstrated the most hydrophobicity among all studied samples. In addition, the mixed ester, triacetobutyrate cellulose (TAB), also showed a sufficiently high hydrophobicity. The promising performance properties of hydrophobic cellulose esters, TBC and TAB, were also demonstrated.

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Section: Introductionmentioning

confidence: 99%

Adjustment of Hydrophobic Properties of Cellulose Materials

Ioelovich¹

2021

Polymers

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“…These residual solids are initially considered as agricultural residues for disposal or burning, which can lead to severe environmental contamination and air pollution. However, recently, emerging evidence has demonstrated that both polysaccharides and lignin from residual solids are invaluable resources for preparing multiple kinds of bio-materials and bio-chemicals using a biorefinery-type process (Chen D. et al, 2018;Zhao et al, 2018;Wu et al, 2019;Pei et al, 2020;Wei et al, 2020). Therefore, an ideal and greener waste management alternative should be considered to reuse the residual solids from C. retusus leaves.…”

Section: Introductionmentioning

confidence: 99%

Isolation and Identification of a Novel Anti-protein Aggregation Activity of Lignin-Carbohydrate Complex From Chionanthus retusus Leaves

Pei

Chen

Chan

et al. 2020

Front. Bioeng. Biotechnol.

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Lignin-carbohydrate complex (LCC) is the biological macromolecule that has been demonstrated to exert multiple biological functions, including antioxidant, antiinflammation and anti-tumorigenesis, which support its broad application in the bioengineering field. However, it remains elusive the involvements of LCC in human neurological disorders, especially those with the overproduction of reactive oxygen species (ROS), such as spinocerebellar ataxias (SCAs). In this study, we found a previously undetermined anti-protein aggregation activity of LCC. Initially, two individual LCC preparations and carbohydrate-free lignin were isolated from the water-extracted waste residues of Chionanthus retusus (C. retusus) tender leaves. The chemical compositional analysis revealed that lignin (61.5%) is the predominant constituent in the lignin-rich LCC (LCC-L-CR), whereas the carbohydrate-rich LCC (LCC-C-CR) is mainly composed of carbohydrate (60.9%) with the xylan as the major constituent (42.1%). The NMR structural characterization showed that LCC-L-CR preparation is enriched in benzyl ether linkage, while phenyl glycoside is the predominant type of linkage in LCC-C-CR. Both LCC and lignin preparations showed antioxidant activities as exemplified by their abilities to scavenge free radicals in cultured mammalian cells and ROS in zebrafish. We further demonstrated a pronounced capability of LCC-L-CR in inhibiting the aggregation of expanded Ataxin-3, disease protein of SCA type 3, in human neuronal cells. Taken together, our study highlights the antioxidant and novel anti-protein aggregation activities of the C. retusus tender leaves-derived LCC.

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“…The improvement of mechanical properties allows PBAT/PPC film as a mulch to be used in harsher environments and even other packaging materials. 40…”

Section: Mechanical Properties Of Pbat/ Ppc and Pbat/ppc/adr Blendsmentioning

confidence: 99%

Effect of chain extrender on the compatibility, mechanical and gas barrier properties of poly(butylene adipate‐co‐terephthalate)/poly(propylene carbonate) bio‐composites

Zhao

Xie

et al. 2021

J of Applied Polymer Sci

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Bio-composites consisting of poly(butylene adipate-co-terephthalate) (PBAT), poly(propylene carbonate) (PPC) and epoxy chain extender ADR 4468 were fabricated via melt blending using a torque rheometer. The relationship of the torque, melt viscosity, and molecular weight of the bio-composites was established via polymeric liquid theory to estimate the real-time chain extension reaction rate under different ADR contents. At the meantime, rheological behavior, thermal and mechanical properties, morphologies, gas barrier properties of the PBAT/PPC/ADR bio-composites were systematically characterized. The corresponding results revealed that the water vapor transmission rate (WVTR) reduced by 50% under 30 phr (parts per hundreds of resin) PPC content. The addition of ADR is beneficial to improve the mechanical properties, thermal stability and phase dispersion of PBAT/PPC without affecting the water barrier property. With 3 phr ADR, the tensile stress and elongation at break were increased from 19.5 MPa and 1184% to 26.9 MPa and 1443%, respectively. In addition, the data of the torque rheometer revealed that the chain extension reaction rate and the melt viscosity was increased with the increasing ADR content, but the reaction rate was reduced with the excessive viscosity.

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Superhydrophobic modification of cellulose and cotton textiles: Methodologies and applications

Cited by 326 publications

References 69 publications

Adjustment of Hydrophobic Properties of Cellulose Materials

Adjustment of Hydrophobic Properties of Cellulose Materials

Isolation and Identification of a Novel Anti-protein Aggregation Activity of Lignin-Carbohydrate Complex From Chionanthus retusus Leaves

Effect of chain extrender on the compatibility, mechanical and gas barrier properties of poly(butylene adipate‐co‐terephthalate)/poly(propylene carbonate) bio‐composites

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