Preparation of antibacterial cellulose with s‐triazine‐based quaternarized N‐halamine

Abstract

To reduce the neutral salt used in the textile finishing with s‐triazine derivatives, a novel s‐triazine‐based quaternarized N‐halamine precursor was synthesized by two simple steps and characterized by H‐NMR and FT‐IR. This compound can be effectively coated onto cellulose by nucleophilic substitution process without neutral salt. The treated cellulose was rendered with powerful biocidal efficacy after transferring to an N‐halamine structure by exposing to dilute sodium hypochlorite solution through the synergistic antimicrobial effect quaternary ammonium salt and N‐halamine. The chlorinated samples could inactivate 6‐logs of Staphylococcus aureus and Escherichia coli O157:H7 within 1 min and 5 min, respectively. In addition, about 50% of oxidant chlorine remained after 50 washing cycles and 30 days storage, and all of the lost active chlorines in the N‐halamine molecules recovered after exposing to bleach solution. With these advantages, the as‐prepared antimicrobial fabrics will have potential application, especially in the medical and healthcare textiles. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44998.

A Review on Surface-Functionalized Cellulosic Nanostructures as Biocompatible Antibacterial Materials

“…Owing to their long-term stability in aqueous and dry storage conditions, regenerability, nontoxicity, low cost, and highly efficient broad-spectrum activity against bacteria, viruses, fungi, and yeasts, N-halamines have found various applications in water treatment, food packaging, latex paint, household sanitations, and air cleaning materials [142][143][144][145][146]. Cellulose is a suitable candidate to be functionalized with N-halamines due to abundance of hydroxyl groups on its backbone which can be easily grafted with N-halamine [147]. Various N-halamine precursors with reactive agents including epoxy groups and organosiloxane have been grafted onto cellulose, and durable antibacterial compounds have been developed.…”

Design of the phthalonitrile‐based composite laminates by improving the interfacial compatibility and their enhanced properties

“…11,12 So, the modifications of GF and the interface between GF and polymer matrix were investigated in many reports. For example, Li et al 13 reported that the introduction of amino-terminated hyperbranched polymer into the polymer matrix can improve the interface between GF and polymer matrix; Chen et al 7 reported that the [(6-oxido-6H-dibenz [c,e] [1,2] oxaphosphorin-6-yl)-methyl]-butanedioic acid also can strengthen the interfacial adhesion between GF and the resin matrix; other modified GF coated with titanate coupler and rare earths were reported by Jiang et al 14 and Cheng et al, 15 respectively. The methods aforementioned to enhance the interfacial adhesion between GF and polymer matrix can contribute to the mechanical properties to some extent, but the methods also exhibit the disadvantages such as increasing the cost, reducing the thermal stability and complex modification operation, and in particularly, may limit the curing temperatures due to the thermal instability of the modifiers.…”

Curing behavior and thermal and mechanical properties enhancement of tetraglycidyl-4,4′-diaminodiphenylmethane/4,4′-diaminodiphenylsulfone using a liquid crystalline epoxy

“…An increase in the activation energy indicates that the reaction components require more energy to complete the reaction. 32 As shown in Fig. 9(b), with an increase in the value of , the value of E a has a relatively small fluctuation in the early stage.…”

“…The basic assumption for the application of the DSC technique to the cure of modified epoxy resins is that the rate of the kinetic process is proportional to the measured heat flow. 30,32 Figure 7 shows the DSC thermograms at various heating rates. The percentage conversion as a function of temperature at various heating rates as calculated from the DSC data is shown in Fig.…”