scholarly journals Functionalization of Cellulose Fibres with Oxygen Plasma and ZnO Nanoparticles for Achieving UV Protective Properties

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Katja Jazbec ◽  
Martin Šala ◽  
Miran Mozetič ◽  
Alenka Vesel ◽  
Marija Gorjanc
Keyword(s):  
Plasma Treatment ◽  
Cotton Fabric ◽  
Zno Nanoparticles ◽  
Photoelectron Spectroscopy ◽  
Oxygen Plasma ◽  
Rf Discharge ◽  
Protection Factor ◽  
Cellulose Fibres ◽  
Protective Properties ◽  
Uv Protective Properties

Low-pressure oxygen plasma created by an electrodeless radiofrequency (RF) discharge was applied to modify the properties of cellulosic fibrous polymer (cotton) in order to improve adsorption properties towards zinc oxide (ZnO) nanoparticles and to achieve excellent ultraviolet (UV) protective properties of cotton fabric. The chemical and physical surface modifications of plasma-treated cotton fabric were examined by X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). The mechanical properties of plasma-treated samples were evaluated, measuring strength and elongation of the fabrics. The quantity of zinc on the ZnO-functionalized cotton samples was determined using inductively coupled plasma mass spectrometry (ICP-MS) and the effectiveness of plasma treatment for UV protective properties of cotton fabrics was evaluated using UV-VIS spectrometry, measuring the UV protection factor (UPF). The results indicated that longer plasma treatment times cause higher concentration of oxygen functional groups on the surface of fibres and higher surface roughness of fibres. These two conditions are crucial in increasing the content of ZnO nanoparticles on the fibres, providing excellent UV protective properties of treated cotton, with UPF factor up to 65.93.

Creating cellulose fibres with excellent UV protective properties using moist CF4 plasma and ZnO nanoparticles

Cellulose ◽  
2014 ◽  
Vol 21 (4) ◽  
pp. 3007-3021 ◽  
Author(s):  
Marija Gorjanc ◽  
Katja Jazbec ◽  
Martin Šala ◽  
Rok Zaplotnik ◽  
Alenka Vesel ◽  
...  
Keyword(s):  
Zno Nanoparticles ◽  
Cellulose Fibres ◽  
Protective Properties ◽  
Uv Protective Properties

scholarly journals Preliminary Study of the Potential Photoprotective Effect of Organogel-Based Lipstick Formulations: Texture Analysis, Rheological, Thermal and Sensory Properties

2021 ◽  
Author(s):  
Cloé L. Esposito ◽  
Plamen Kirilov
Keyword(s):  
Texture Analysis ◽  
Stability Study ◽  
Protection Factor ◽  
Protective Properties ◽  
Uv Protective Properties ◽  
The Stability ◽  
Low Molecular Weight Organogelators ◽  
Harmful Effects ◽  
Unique Chemical

With the increase in occupation-specific risks of lip cancer associated with solar radiation, there is a need for developing photoprotective lipsticks to protect skin against harmful effects of UV radiation. Considering the unique chemical and physical properties of low-molecular-weight organogelators (LMOGs), the present study intended to assess the UV protective properties of LMOGs-based lipstick formulations. In this study, dibenzylidene-D-sorbitol (DBS) and 12-hydroxystearic acid (12-HSA) were used to formulate lipsticks : L1 (1% DBS), L2 (10% 12-HSA), L3 (1.5% DBS) and L4 (control, no LMOGs). The lipstick formulations were tested for in vitro sun protection factors (SPF), UVA protection factor (UVA-PF), thermal, mechanical and texture analyses. Lipsticks with LMOGs exhibited higher UVA-PF and SPF, and more particularly 12-HSA-based lipstick. Results showed also the viscoelastic and heat-resistant properties of LMOGs and their effect of increasing pay-off values. In general, texture analysis indicating that 12-HSA-based lipstick was significantly harder to bend compared to control, while other formulations became softer and easier to bend throughout the stability study. Finally, sensorial and instrumental analyses permitted to classify lipsticks into two groups. This work suggests the potential use of LMOGs as a structuring agent for lipsticks paving the way towards more photoprotective and sustainable-derived alternatives.

Fabrication of ZnO Nanoparticles by Hyperbranched Polymer and their Application on the Functional Finishing of Cotton Fabric

2013 ◽  
Vol 796 ◽  
pp. 353-359
Author(s):  
De Suo Zhang ◽  
Yan Fen Liao ◽  
Hong Lin ◽  
Yu Yue Chen
Keyword(s):  
Cotton Fabric ◽  
Zno Nanoparticles ◽  
Hyperbranched Polymer ◽  
Antibacterial Activities ◽  
Cotton Fabrics ◽  
Zinc Nitrate ◽  
Bacterial Reduction ◽  
X Ray ◽  
One Step ◽  
Uv Protective Properties

A novel ZnO nanoparticles aqueous solution was prepared through a one-step reaction between a modified hyperbranched polymer-PNP and zinc nitrate. During the reaction process, PNP not only acted as the reagent to produce ZnO nanoparticles, but also controlled the size of the synthesized ZnO nanoparticles and stabilize them after reaction. The size of ZnO nanoparticles were about 6 nm with narrow size distribution. Then the ZnO nanoparticles were utilized for the functional finishing of cotton fabrics by in situ generation and deposition method. Scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD) measurements confirmed the ZnO nanoparticles coated on the cotton fibers. The treated cotton fabrics exhibited excellent UV protective properties and antibacterial activities. When the ZnO content in cotton fabric was 2.23 %, the UPF value of treated cotton fabric reached 114.4 and the bacterial reduction rates againstStaphylococcus aureus(S. aureus) andEscherichia coli(E. coli) both exceeded 98 %.

UV protective properties of cotton fabric treated with plasma, UV absorber, and reactive dye

2014 ◽  
Vol 15 (10) ◽  
pp. 2095-2104 ◽  
Author(s):  
Marija Gorjanc ◽  
Katja Jazbec ◽  
Miran Mozetič ◽  
Mateja Kert
Keyword(s):  
Cotton Fabric ◽  
Reactive Dye ◽  
Protective Properties ◽  
Uv Absorber ◽  
Uv Protective Properties

Functionalization of cotton fabric with ZnO nanoparticles and cellulose nanofibrils for ultraviolet protection

2021 ◽  
pp. 004051752110018
Author(s):  
Mengmeng Li ◽  
Amjad Farooq ◽  
Shuai Jiang ◽  
Meiling Zhang ◽  
Hassan Mussana ◽  
...  
Keyword(s):  
Cotton Fabric ◽  
Zno Nanoparticles ◽  
Inductively Coupled Plasma ◽  
Cellulose Nanofibrils ◽  
Cotton Fabrics ◽  
Impregnation Method ◽  
Protection Factor ◽  
Zno Nps ◽  
Ultraviolet Protection Factor ◽  
Ultraviolet Protection

A simple impregnation method was employed to obtain functional cotton fabric based on a zinc oxide (ZnO) and cellulose nanocomposite. The cellulose nanofibril suspension was utilized to reduce the agglomeration of ZnO nanoparticles (ZnO NPs) and bind them to the surface of the fiber. Scanning electron microscopy and inductively coupled plasma mass spectrometry were used to confirm the presence of ZnO NPs on the surface of the fiber. The treated cotton fabrics exhibited high ultraviolet protection factor values, which were still higher than 50 even after 30 standard washing cycles. Furthermore, the treated samples showed a modest antibacterial effect due to the presence of ZnO NPs. Meanwhile, the treated cotton fabrics showed a decrease (less than 30%) in air permeability.

scholarly journals Synthesis, characterization and application of reactive UV absorbers for enhancing UV protective properties of cotton fabric

2020 ◽  
Vol 63 (2) ◽  
pp. 525-536
Author(s):  
Hekmat I. Ibrahim ◽  
Reham Farouk ◽  
Elham A. El-karadly ◽  
Ahmed Elwahy ◽  
Abdalla. A. Mousa
Keyword(s):  
Cotton Fabric ◽  
Protective Properties ◽  
Uv Absorbers ◽  
Uv Protective Properties

Effect of oxygen plasma treatment on the performance of recessed AlGaN/GaN Schottky barrier diodes

2021 ◽  
Author(s):  
Wei Mao ◽  
shihao Xu ◽  
Haiyong Wang ◽  
Cui Yang ◽  
ShengLei Zhao ◽  
...  
Keyword(s):  
Plasma Treatment ◽  
Schottky Barrier ◽  
Photoelectron Spectroscopy ◽  
Oxygen Plasma ◽  
Oxygen Plasma Treatment ◽  
Surface Oxide Layer ◽  
Schottky Barrier Diodes ◽  
X Ray ◽  
Current Collapse ◽  
Effect Of Oxygen

Abstract The treatment effect of the oxygen plasma on the performance of recessed AlGaN/GaN Schottky barrier diodes has been investigated. After the oxygen plasma treatment, the turn-on voltage and reverse leakage current are slightly changed, while the current collapse could be effectively mitigated. The X-ray photoelectron spectroscopy results suggest that a thin surface oxide layer is formed by the oxygen plasma treatment, which is responsible for the reduced current collapse. In addition, the device with oxygen plasma treatment has a relatively more inhomogeneous barrier height.

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