Effect of Β-Cyclodextrin on Benzophenones and its Impact on UVR Filtration of Cotton Fabric Through ‘
&lt;i&gt;Guest Absorber - Host Enhancer&lt;/i&gt;’ Mechanism

Sivakumar, K.; Allabasha, Nalini; Mani, Murali Krishnan; Sarkar, Ajoy K.

doi:10.2139/ssrn.4276265

Cited by 1 publication

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“…13 Dong et al showed that the poly(vinyl alcohol) (PVA)/SE film had excellent photostability because the bio-UV absorber SE reacted with radical oxygen as well as reduced oxygen and generated active oxygen species. 14 In addition, many organic UV absorbents are also used to prevent the photooxidation of polymers, including benzophenones, 15,16 Schiff bases, 17 benzotriazoles, 18 and organotin complexes. 19 Although these UV absorbents can slow down the decomposition rate of polymers at low concentrations, most of them are organic substances with considerable toxicity.…”

Section: Introductionmentioning

confidence: 99%

Oil-Soluble Ultraviolet-Absorbing Carbon Dots Dispersed in Polyethylene Films as Antiaging Materials

Qiu

et al. 2023

ACS Appl. Nano Mater.

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Ultraviolet (UV) absorbents are widely used in coatings and polymers owing to their remarkable absorbance of UV irradiation. As a new type of organic UV absorbent, carbon dots (CDs) have presented outstanding UV absorption properties. However, the use of water-soluble reactants in the synthesis process of most CDs makes them easy to dissolve in water, which is not conducive to their use in the field of thin films. In this paper, we report an effective hydrothermal method to prepare threecomponent carbon dots (Im-CDs) from sodium citrate, ethylenediamine, and imidazole and then modify the surface to obtain the final product (AOT-CDs) by docusate sodium. The AOT-CDs exhibited a strong UV absorption capacity to UVA and UVB but a transmittance in the visible region both in solution and in polymers. In addition, docusate sodium is regarded as a suitable surface modifier to transfer Im-CDs from water to various organic solvents. When the excellent oil-soluble AOT-CDs are applied to a polyethylene film, the properties of the films, including the efficiency of UV shielding, mechanical property, and aging time, can be effectively tuned by changing the concentration of AOT-CDs. Our full-band UV-shielding films with CDs show no obvious degradation in the process of accelerated UV aging for dozens of days. Due to their ecofriendliness and good chemical and thermal stability in films, AOT-CDs are expected to become competitive candidates for next-generation UV absorbents.

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Section: Introductionmentioning

confidence: 99%

Oil-Soluble Ultraviolet-Absorbing Carbon Dots Dispersed in Polyethylene Films as Antiaging Materials

Qiu

et al. 2023

ACS Appl. Nano Mater.

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show abstract

Effect of Β-Cyclodextrin on Benzophenones and its Impact on UVR Filtration of Cotton Fabric Through ‘ <i>Guest Absorber - Host Enhancer</i>’ Mechanism

Cited by 1 publication

References 0 publications

Oil-Soluble Ultraviolet-Absorbing Carbon Dots Dispersed in Polyethylene Films as Antiaging Materials

Oil-Soluble Ultraviolet-Absorbing Carbon Dots Dispersed in Polyethylene Films as Antiaging Materials

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