Preparation, Characterization and Application of Cyclodextrin‐Containing UV‐Curable Waterborne Polyurethane Based on Guest Regulation

Abstract

A novel UV‐curable supramolecular waterborne polyurethane (PU) was prepared through the introduction of methylated‐β‐cyclodextrin (Me‐β‐CD). The host‐guest interactions between Me‐β‐CD and photosensitive monomer (PM) were further investigated by 1HNMR and fluorescence spectroscopy, where the corresponding equilibrium constant was also calculated. Compared with pure PU, the tensile strength and thermal stability of UV‐curable PU films increased evidently. Furthermore, cotton fabrics treated by PU were obtained via soaking method. To further construct a 3D cross‐linked network, the UV‐curable technique was applied by adopting PM with different amounts of the unsaturated bond, which could provide cotton fabrics with different functionalities. The results show that the higher amount of unsaturated bond, the better water repellency which cotton fabrics own. What's more, the water repellency of the waterborne polyurethane fabric obtained by the host‐guest inclusion was larger than that of the physical mixture. Those provide a strategy for synthesizing functional PU based on guest regulation, which can be applied for fabric finishing.

UV-curable waterborne polyurethane coatings: A state-of-the-art and recent advances review

“…From the 138 reviewed papers, twenty-seven (27) used polytetramethylene glycol (PTMG) as polyol [26,. Polypropylene glycol (PPG) was the second most chosen polyol, being part of twenty two studies [12,23,32,40,52,59,65,[67][68][69][70][71][72][73][74][75][76][77][78][79][80][81][82], followed by poly(ethylene glycol) (PEG) (sixteen studies) [7,21,73,[83][84][85][86][87][88][89][90][91][92][93][94][95][96], poly(ε-caprolactone) (PCL) (thirteen studies) [6,20,31,52,59,[97][98][99]...…”

“…Simultaneously, high crosslinking density can prohibit the water molecular penetrating the inside of films and keep hydrophilic groups from moving towards the surface [141]. Reactive diluents as tripropyleneglycol diacrylate (TPGDA) [124,136], trimethylolpropane triacrylate (TMPTA) [83,96,106,109,137], pentaerythritol [50], pentaerythritol tetraacrylate (PETTA) [100], dipentaerythritol hexaacylate (DPHA) and dipropylene glycol diacrylate (DPGDA) [137,141], modified enzymes [134], trimethylolpropane tris(3-mercaptopropionate) (TMPMP) [149] among others can be added during UV-WPUs synthesis.…”

Black garlic melanoidins inhibit in vitro α‐amylase and α‐glucosidase activity: the role of high‐molecular‐weight fluorescent compounds

“…With the help of principal component analysis, IR spectroscopic analysis indicated that the content of CO correlated with absorbance at 420 nm 25 . The increase in unsaturated bonds was beneficial to the fluorescence characteristics of black garlic MLDs 36 . However, the presence of unsaturated double‐carbon bonds weakened the water solubility of MLDs, and BG20 and BG40 showed stronger amplitudes.…”

“…25 The increase in unsaturated bonds was beneficial to the fluorescence characteristics of black garlic MLDs. 36 However, the presence of unsaturated doublecarbon bonds weakened the water solubility of MLDs, and BG20 and BG40 showed stronger amplitudes. The region around 1100 cm −1 was connected with C C, C O stretching and C H bending, which indicated the presence of glycosidic bonds in MLDs.…”

Dual network interpenetrating degradable waterborne polyurethanes with hydrogen bonded cross‐linked modified β‐cyclodextrin hydrophobic cavities

“…Sagitha et al 16 investigated the changes in the physico‐chemical properties of β‐CD functionalized PU fiber membranes, it was found that all PU/CD membranes incorporating CD exhibited better hydrophilicity, thermal stability, higher vapor transfer rate, biocompatibility and PBS adsorption than the pristine PU membranes. Yao et al 17 prepared a different UV‐curable supramolecular WPUand investigated the effect of the amount of unsaturated bonds on hydrophilicity, thermal stability and mechanical properties, that the results showed that the polyurethane fabric based on the host‐guest interaction was more hydrophobic. Stefan et al 18 used a two‐step method to synthesize linear and crosslinking polyurethane materials containing β‐CD in their structure which was obtained with favorable mechanical properties for films with adsorption properties.…”