Sulfonation of polyester fabrics by gaseous sulfur oxide activated by UV irradiation

Photoinitiated Polymerization of Cationic Acrylamide in Aqueous Solution: Synthesis, Characterization, and Sludge Dewatering Performance

“…As shown in Figure 4 , close cross-linking and gel network structure were observed in the photoinitiated P(AM-DAC), whereas the commercial PAM showed a comparatively looser and flatter surface. The difference in morphological structure may result from the introduction of DAC and some kind of surface modification induced by ultraviolet light, which was probably similar to existing related reports [ 21 , 23 , 24 ]. The net structure of photo-induced copolymer was favorable for the penetration of water into the polymeric network, so that the solubility of product could be improved [ 31 ].…”

“…Low temperature is beneficial for the production of polymer with high molecular weight by avoiding the side effect of branching and cross-linking, which can be commonly encountered at high temperature [ 20 – 22 ]. Meanwhile, the photopolymerization is easy to operate and control, which requires only simple equipment, economized energy sources, making it an eco-friendly process [ 21 ]. In addition, photoinduced polymerization is believed to have the ability to make surface modification on surface graft polymerizations [ 23 , 24 ].…”

Antimicrobial and optical properties of PET chemically modified and grafted with borane compounds

“…To avoid these deciencies, polymer surfaces can be modied without the loss of their excellent bulk properties. Polymer surfaces can be modied by chemical methods (wet processes using only chemical substances [5][6][7] ), physical methods like plasma treatment, [8][9][10][11] UV irradiation [12][13][14] or combinations of both physical and chemical methods. 15,16 Each of them has advantages and disadvantages.…”

Facile preparation of super-hydrophilic poly(ethylene terephthalate) fabric using dilute sulfuric acid under microwave irradiation

“…Sulfonation of the aromatic rings introduces SO 3 H groups to PET macromolecules, and these groups will improve the hydrophilicity of the surface of PET fabric [24]. Research has been performed with the aim of grafting sulfonic acid groups onto the surface of PET fabric using UV irradiation and SO 3 gas.…”