Antibacterial Properties of Ester—Cross-Linked Cellulose–Containing Fabrics Post-Treated with Metal Salts

Abstract

To improve the performance properties of cellulose-containing fabric, ester was cross-linked with polycarboxylic acid in the presence of specific catalysts. Its pendant carboxyl groups were exploited in binding some heavy metals (by reacting with some salts, such as zinc acetate, zinc chloride, zinc sulfate, cupric acetate, cupric chloride, cupric sulfate, and nickel sulfate) capable of imparting their antibacterial activity toward some gram-positive bacteria (viz., B. subtilis, B. mycoides, Sta. aureus) and a gram-negative bacteria (E. coli). Zinc salts impart to the fabric the highest antibacterial activity, followed by cupric acetate. Zinc chloride proved to be the metal salt that yielded the maximum antibacterial activity.

Keywords:

• Antibacterial
• Cellulose
• Ester-Cross-linking
• Fabric
• Finish
• Metal salt

Notes

Finishing conditions: CA, 80 g/l; SHP, 80 g/l; nonionic wetting agent, 2 g/l; wet pickup, 80% (owf); drying at 85°C/3 min; curing at 180°C/90 sec.

Post-treatment: metal salt, 10 g/l; nonionic wetting agent, 2 g/l; wet pickup, 80% (owf); drying at 85°C/3 min.

DCR: dry crease recovery angle (warp + weft); TS: tear strength (warp direction).

Finishing conditions: c.f. Table 1.

Post-treatment: c.f. Table 1, with varying metal salt conc.

DCR and TS: c.f. Table 1.

Finishing conditions: c.f. Table 1, except that of the concentration of CA/SHP is specified above.

Post-treatment: c.f. Table 1.

DCR and TS: c.f. Table 1.

Finishing conditions: c.f. Table 1, in addition to the additive when used.

Post-treatment, DCR, and TS: c.f. Table 1.

TEA·HCl: Triethanolamine hydrochloride; PEG: polyethylene glycol 600.

Finishing conditions: Esterifying agent (either CA or PDA), 80 g/l; SHP, 80 g/l; TEA·HCl, 15 g/l; PEG.600, 30 g/l; nonionic wetting agent, 2 g/l; drying at 85°C/3 min; curing at 180°C/90 sec.

Post-treatment: ZnCl₂, 10 g/l; DCR and TS: c.f. Table 1.

Finishing conditions: CA, 80 g/l; TEA·HCl, 15 g/l; PEG·600, 30 g/l; nonionic wetting agent, 2 g/l; drying at 85°C/3 min; curing at 180°C/90 sec.

Post-treatment: ZnCl₂, 10 g/l; nonionic wetting agent, 2 g/l; wet pickup 80 % (owf); drying at 85°C/3 min. DCR and TS: c.f. Table 1.

Finishing conditions: CA, SHP, and DMDHEU as cited above; TEA·HCl/PEG, 15/30 g/l.

The rest of finishing conditions: c.f. Table 1, drying at 85°C/3 min; curing at 180°C/90 sec.

Post-treatment: DCR and TS: c.f. Table 1.

Finishing conditions: CA, 80 g/l; SHP, 80 g/l; TEA·HCl, 15 g/l; PEG.600, 30 g/l; nonionic wetting agent, 2 g/l; drying at 85°C/3 min; curing at 180°C/90 sec.

Post-treatment, DCR, and TS: c.f Table 1.

F and PT: finished and post-treatment.