Surface Modification of Poly(ethylene Terephthalate) (PET) with UV/Nano-TiO₂

Abstract

The PET fabric surface was modified with ultraviolet radiation and nano-TiO2. The wettability and the broken strength of the modified PET fabric were studied. The results showed that with the increase of the ultraviolet radiation irradiation, the water contact angles of modified PET fabrics decreased greatly. Water contact angle of PET fabric modified with 40g/L nano-TIO2 and 60 min ultraviolet radiation irradiation could decreased to zero in 4.11 seconds. And the capillary rise height of modified PET fabric could increase from 1.1 mm to 110.2 mm. The spraying rate of modified fabric could decrease from 4 to 1 degree, and the water absorption could increase 89.86%. These showed the hydrophobic PET fabric could be modified to super hydrophilic PET fabric. The broken strength of modified PET fabric not only did not decrease, but also increased a little. The broken elongation kept well.

Super-hydrophilic modification of polyester fabrics based on titanium dioxide/gelatin

“…47,64 Effect of storage time on hydrophilicity of coated PET fabric Fabric modified with TiO 2 would become hydrophobic after one month in dark conditions. 24 The TiO 2/ gelatin- coated PET fabric was placed in a sealed bag and stored in an opaque box for one month. The hydrophilicity of the coated fabrics after prolonged storage is listed in Table 9.…”

“…The resulting fabric showed an excellent antibacterial property and outstanding laundering durability. 23 Liang et al 24 improved the wettability of PET fabrics by TiO 2/ UV but it required a long period of UV radiation. Therefore, the loading of TiO 2 on the PET surface has attracted wide attention.…”

“…23 Liang et al. 24 improved the wettability of PET fabrics by TiO 2/ UV but it required a long period of UV radiation. Therefore, the loading of TiO 2 on the PET surface has attracted wide attention.…”

Hydrophilic Modification of Polyester/Polyamide 6 Hollow Segmented Pie Microfiber Nonwovens by UV/TiO2/H2O2

“…Ultraviolet (UV) irradiation treatment, as a relatively simple and straightforward strategy, has been used for the surface modification of fabrics to increase hydrophilicity. Liang et al [11] experimentally modified the PET fabric surface with UV irradiation and titanium dioxide nanoparticles (nano-TiO 2 ). The results demonstrated that the water contact angle of PET fabric modified with 40 g/L nano-TiO 2 and 60 min UV irradiation decreased to zero in 4.11 s, while the water absorption increased to 89.86%.…”

Colorant-free coloration and superhydrophilic modification of poly(ethylene terephthalate) fabric surface by H2O2 and nano-TiO2 ultraviolet photocatalysis

“…However, because of its high hydrophobicity, garments made of PET fabric are considered uncomfortable to wear. Many researches reported the methods for modifying PET fabric to be more hydrophilic, such as a plasma-ion beam, 1–3 oxidation by KMnO 4 /HCl, 4 carbohydrate or protein grafting onto the PET fabric surface, 5,6 ultraviolet (UV) irradiation, 7 coating some hydrophilic materials on the surface of PET fabric 8 and a hydrolysis by alkali and enzyme method. 9 Some new polar groups (C = O, −COOH, −OH) were generated by these treatments to improve the wettability of the textile, but the mechanical properties of the treated fabric were degraded as a result of the surface etching effect.…”