Sorbents with biocidal properties for disinfection of water for various purposes

Сусь, М. О.; Mitchenko, Tetiana

doi:10.2166/ws.2013.210

Cited by 3 publications

(2 citation statements)

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“…Poly(hexamethylene guanidine) (PHMG) is an environment-friendly cationic polymer with strong antibacterial activity and a low toxicity to human beings, − which has been widely used for water treatment, wound disinfection, , food packing, and so on. However, commercially available linear PHMG with amine end groups cannot react with the glucose units of cotton directly.…”

Section: Introductionmentioning

confidence: 99%

Facile and Versatile Modification of Cotton Fibers for Persistent Antibacterial Activity and Enhanced Hygroscopicity

Cai

Yang

Zhang

et al. 2018

ACS Appl. Mater. Interfaces

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Natural fibers with functionalities have attracted considerable attention. However, developing facile and versatile strategies to modify natural fibers is still a challenge. In this study, cotton fibers, the most widely used natural fibers, were partially oxidized by sodium periodate in aqueous solution, to give oxidized cotton fibers containing multiple aldehyde groups on their surface. Then poly(hexamethylene guanidine) was chemically grafted onto the oxidized cotton fibers forming Schiff bases between the terminal amines of poly(hexamethylene guanidine) and the aldehyde groups of oxidized cotton fibers. Finally, carbon–nitrogen double bonds were reduced by sodium cyanoborohydride, to bound poly(hexamethylene guanidine) covalently to the surface of cotton fibers. These functionalized fibers show strong and persistent antibacterial activity: complete inhibition against Escherichia coli and Staphylococcus aureus was maintained even after 1000 consecutive washing in distilled water. On the other hand, cotton fibers with only physically adsorbed poly(hexamethylene guanidine) lost their antibacterial activity entirely after a few washes. According to Cell Counting Kit-8 assay and hemolytic analysis, toxicity did not significantly increase after chemical modification. Attributing to the hydrophilicity of poly(hexamethylene guanidine) coatings, the modified cotton fibers were also more hygroscopic compared to untreated cotton fibers, which can improve the comfort of the fabrics made of modified cotton fibers. This study provides a facile and versatile strategy to prepare modified polysaccharide natural fibers with durable antibacterial activity, biosecurity, and comfortable touch.

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Section: Introductionmentioning

confidence: 99%

Facile and Versatile Modification of Cotton Fibers for Persistent Antibacterial Activity and Enhanced Hygroscopicity

Cai

Yang

Zhang

et al. 2018

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…Recently, a novel cationic polymer, poly(hexamethylene guanidine) (PHMG), has been studied and used as an environmentally-friendly board-spectrum antimicrobial for water treatment, 21 wound disinfection, 22 textile coating, 23,24 food packing 25 and so on. PHMG has a high antibacterial activity, but a low toxicity to humans, 26,27 probably due to its appropriate charge density and hydrophobic/hydrophilic ratio.…”

mentioning

confidence: 99%