Preparation of cationic polyurethane and its application to acrylic fabrics

Abstract

The cationic aqueous polyurethane (CAPU) coatings were prepared by reacting isophoron diisocyanate with quaternized diethanolamine (DEA) and poly(ethylene glycol) of two different molecular weights (Mn = 600 and 1000 g/mol; CAPU600 and CAPU1000). The quaternization of DEA and the formation of cationic polyurethane were investigated by Fourier transform infrared analysis. The pilling resistance and the antimicrobial property of the coated acrylic fabric were also studied. Obtained results showed that the pilling resistance of the treated fabrics increased with the increase in the concentration of the used CAPU. The acrylic fabrics treated with CAPU1000 shows higher value of pilling resistance, even at lower concentration in comparison with CAPU600. The higher the curing temperature is, the higher the pilling resistance, fabric roughness, and yellowness of the treated acrylic fabrics are. The untreated fabric showed no antimicrobial property, while the treated fabrics with CAPU showed superior antimicrobial properties. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011

Synthesis and characterization of novel natural rubber based cationic waterborne polyurethane—Effect of emulsifier and diol class chain extender

“…FTIR spectra of both cWPU and cWPU added EG samples were shown in the Figure . The chemical structures of polyurethane shown as important functional groups were observed at 3302, 1707, 1602, 1538, and 1224 cm −1 assigned to NH stretching, CO ester stretching, NH bending of urethane position, NCO vibration of polyurethane linkage, and CO acyl stretching of urethane linkage, respectively . Moreover, the absorption band of cis ‐1,4 polyisoprene of NR is revealed in the wave numbers of 836 cm −1 corresponding to CH out of plane deformation …”

“…Having better advantage, cWPU has been recorded that there were high adhesion to various ionic surface, especially glass, paper, leather, and also in part of automotive applications. Their other intense applications are widely used in many sectors of industrials such as fabric coating, novel electrolyte, and in special field of gene carrier and also DNA transfection …”

“…As basic knowledge, ordinary WPUs are based on polyol from fossil‐fuel feedstock petroleum, used commercial chemicals in class of polyether and polyester, that is very stress now against environmental friendly. To replace the usage of petroleum‐based polyol, cWPU is the intended material to find the new way or new resource for synthesizing base on natural and renewable resource materials.…”

Synthesis of polyhydroxyurethanes from di(trimethylolpropane) and their application to quaternary ammonium chloride-functionalized films

“…Since silver species, especially silver nanoparticles, are classically known as effective antimicrobial agents, Ag-conjugated polymer materials, including polyurethanes, have been prepared. 27,28,[33][34][35][36][37][38][41][42][43][44][45][46][47][48][49] For cationic moieties, quaternary ammonium salts (QAS), 27,28,[33][34][35][36][37][38][41][42][43][44][45][46] quaternary phosphonium salts, 46 and protonated amine groups 47-49 effectively generate antimicrobial properties. Furthermore, the leaching of highly concentrated Ag ions is considered to cause cytotoxicity.…”

Smart secondary polyurethane dispersions

“…A wide variety of charged PU types is known, which differ by the nature of the charge (positive, negative or both) and by the structural position where the charge is inserted, i.e. within the polymeric backbone as pendant or terminating group . Similarly, the size of the charged dispersion particles is different and was found to depend to a large extent on the concentration of ionic groups .…”