Lignin nanoparticles modified with tall oil fatty acid for cellulose functionalization

In this study, tall oil fatty acid ester of softwood kraft lignin (TOFA-L) was used to prepare TOFA lignin nanoparticles (TLNP) in water. The average diameters for two prepared TLNPs in 0.1 mg/ml concentration were 140 nm and 160 nm. TLNPs were attached covalently onto modified and unmodified cellul...

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Bibliographic Details
Published in:Cellulose (London) 2020, Vol.27 (1), p.273-284
Main Authors: Setälä, Harri, Alakomi, Hanna-Leena, Paananen, Arja, Szilvay, Géza R., Kellock, Miriam, Lievonen, Miikka, Liljeström, Ville, Hult, Eva-Lena, Lintinen, Kalle, Österberg, Monika, Kostiainen, Mauri
Format: Article
Language:English
Subjects:
Antiinfectives and antibacterials
Antimicrobial agents
Bioorganic Chemistry
Cellulose
Cellulose esters
Cellulose fibers
Ceramics
Chemistry
Chemistry and Materials Science
Coated fibers
Composite materials
Composites
E coli
Fatty acids
Glass
Lignin
Nanoparticles
Nanospheres
Natural Materials
Organic Chemistry
Original Research
Physical Chemistry
Polymer Sciences
Pseudomonas aeruginosa
Sustainable Development
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Summary:In this study, tall oil fatty acid ester of softwood kraft lignin (TOFA-L) was used to prepare TOFA lignin nanoparticles (TLNP) in water. The average diameters for two prepared TLNPs in 0.1 mg/ml concentration were 140 nm and 160 nm. TLNPs were attached covalently onto modified and unmodified cellulose fibres to form an antimicrobial composite material. The modified cellulose fibres contained reactive allylic double bonds with a degree of substitution of 0.05. The antimicrobial properties of both TLNPs and TLNP coated fibres (TLNP-C) were studied against Escherichia coli , Staphylococcus aureus and Pseudomonas aeruginosa using silver nanospheres (average size 10 nm) and Lignoboost lignin particles with 300 and 400 nm sizes as references. Antimicrobial activity of the samples was stronger against Gram-positive S. aureus cells than against Gram-negative target microbes E. coli and P. aeruginosa .
ISSN:0969-0239
1572-882X
DOI:10.1007/s10570-019-02771-9