Multifunctional hyperbranched polyester grafted β-cyclodextrin metal complexes for textile coating

This study approached the developing of grafted beta cyclodextrins (β-CD) for achievement multifunctional properties. Hyperbranched bis-MPA-polyester-16-hydroxyl, generation 2, (HBPE-2) was used as crosslinker in the presence of cobalt (Co) or nickel (Ni) acetate using emulsion technique. The resulting materials were applied in the printing paste for in situ printing of cellulosic fabrics using phthalocyanine organic pigment (C.I: pigment blue 15:3). Fourier transform infrared spectroscopy (FTIR), transmission electron microscope (TEM) and particle size distribution analysis using dynamic light scattering (DLS) technique were examined to illustrate the structure and morphologies of the prepared materials. Moreover, the antimicrobial activity against gram-positive (Staphylococcus aureus) and gram-negative (Escherichia coli) bacteria using the agar diffusion method was also carried out. The FTIR results demonstrated that HBPE-2 can serve as a good crosslinker to obtain the grafted β-CD with high thermal stability and physical attachment relative to the uncrosslinked one. Also, TEM and particle size analysis indicated that successful metal binding to the grafted β-CD was obtained with different morphologies and low particle size relative the uncrosslinked one. All the grafted β-CD samples exhibited good antimicrobial activity up to 20 mg concentration. Besides, the prepared materials accelerated the colour fixation on the surface of the cellulosic fabric prints relative to the used conventional pigment printing under the unfavorable conditions.