Production of ultrafiltration membranes exhibiting antibacterial properties by the incorporation of novel <scp><i>N</i>‐halamine</scp> copolymers

Demirci, Fatma; Aydın, Ahmet Alper; Orhan, Mehmet; Kocer, Hasan B.

doi:10.1002/app.52727

Cited by 5 publications

(2 citation statements)

References 29 publications

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“…The interpenetrated cotton was chlorinated with tert ‐butyl hypochlorite to produce silicone with only hydantoin‐based N ‐chloramines@cotton. The slightly lower experimental pressure of 27 MPa was used here to attain the same loading of NCl on silicone with only hydantoin‐based N ‐chloramines@cotton as that on silicone with quaternized hydantoin‐based N ‐chloramines@cotton estimated by the iodometric/thiosulfate titration presented as follows 9 :

C {normall}^{+} % = \frac{35.5}{2} N \times (V_{C {normall}^{+}} - V_{0}) \times 100 / W

…”

Section: Methodsmentioning

confidence: 99%

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Construction of silicone with quaternized hydantoin‐based N‐chloramines on cotton with aid of supercritical interpenetration for antibacterial synergism

Chen,

Suo,

Pei

et al. 2024

J of Applied Polymer Sci

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A silicone carrying combined functionalities of different mechanisms and physiochemical properties is synthesized as a strategy for faster and broader bacterial eliminations. Briefly, ring‐opening alcoholysis of succinic anhydride with 2‐dimethylaminoethanol and subsequent esterification of the alcoholysis product with 5‐(4‐hydroxyphenyl)imidazolidine‐2,4‐dione produced a structure with one tertiary amine and two hydantoinyl NH bonds. The tertiary amine was quaternized with 3‐chloro‐1‐propanol whose OH was then alcoholyzed with SiH of poly(methylhydrosiloxane). The polymeric product was interpenetrated into cotton at 30 MPa and 50°C in supercritical CO2 and treated with tert‐butyl hypochlorite to chlorinate its hydantoinyl NH bonds, forming a 78 nm biocidal layer of silicone with quaternized hydantoin‐based N‐chloramines. Antibacterial tests showed that the quaternary ammonium salt and two hydantoin‐based N‐chloramines act synergistically due to their complementary features, killing both Staphylococcus aureus and Escherichia coli much more efficiently than each functionality. More importantly, the ratio of N‐chloramine to quaternary ammonium salt of 2:1 herein also provided higher efficacy than a reported counterpart with a 1:1 ratio. Biocidability of the modified cotton had promising stability and rechargeability, which indicates that supercritical interpenetration produced a durable interfacial layer without the necessity of chemical bonding.

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C {normall}^{+} % = \frac{35.5}{2} N \times (V_{C {normall}^{+}} - V_{0}) \times 100 / W

…”

Section: Methodsmentioning

confidence: 99%

“…5,6 The representatives of organic ones are N-halamines (N Cl, N Br, etc. ), [7][8][9][10] cationic salts (quaternary ammonium salts, quaternary phosphonium salts, etc. ), [11][12][13][14] aldehydes, alcohols and phenols, and biguanides.…”

Section: Introductionmentioning

confidence: 99%