Enhanced UV-protection and antibacterial properties of natural rubber/rutile-TiO2 nanocomposites

Abstract With the emerging of sustainability, the fabrication of effective and eco-friendly agents for rubber industry has attracted extensive attention. In this study, a novel and nontoxic titanium dioxide-based vulcanization accelerator (xanthate-modified nanotitanium dioxide (TDSX)) with excellent antibacterial performance, for the first time, was synthesized under the catalyst of ceric ammonium nitrate. Notably, the thermal stability of xanthate was greatly enhanced after being grafted on titanium dioxide (TiO2) nanoparticles, in which the activation energy was increased from 6.4 to 92.5 kJ/mol, enabling the obtained TDSX with multiple functions, mainly consisting of fabulous vulcanization-promoting effects, reinforcing effects, antibacterial properties, and anti-ultraviolet aging effects for natural rubber (NR). Simultaneously, the TDSX can be effectively and uniformly dispersed in the rubber matrix along with the developed interface interaction between TDSX particles and rubber matrix. Compared to the traditional accelerators 2-mercaptobenzothiazole (M) system, the tensile strength and the tearing strength of NR/TDSX was improved by 26.3 and 40.4%, respectively. Potentially, our work for preparing green vulcanization accelerator can provide a new design strategy for multifunctional high performance elastomer materials.

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UV protection and antibacterial properties of seaweed capped ZnO nanoparticles coated cotton fabrics

International Journal of Biological Macromolecules ◽

10.1016/j.ijbiomac.2017.07.097 ◽

2017 ◽

Vol 105 ◽

pp. 788-795 ◽

Cited By ~ 34

Author(s):

R. Pandimurugan ◽

S. Thambidurai

Keyword(s):

Zno Nanoparticles ◽

Antibacterial Properties ◽

Cotton Fabrics ◽

Uv Protection ◽

Coated Cotton

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An Economical Dyeing Process for Cotton and Wool Fabrics and Improvement their Antibacterial Properties and UV protection

Journal of Natural Fibers ◽

10.1080/15440478.2017.1364204 ◽

2018 ◽

Vol 15 (6) ◽

pp. 777-788 ◽

Cited By ~ 3

Author(s):

Zahra Motaghi

Keyword(s):

Antibacterial Properties ◽

Uv Protection ◽

Dyeing Process ◽

Wool Fabrics

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Effect of Synthesized Ag Nanoparticles by Using the Different Amounts of Polyvinylpyrrolidone for Ag-Natural Rubber Hybrid Sheets and their Antibacterial Properties

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.751.270 ◽

2017 ◽

Vol 751 ◽

pp. 270-276 ◽

Cited By ~ 1

Author(s):

Warot Prasanseang ◽

Chaval Sriwong ◽

Kittisak Choojun

Keyword(s):

Natural Rubber ◽

Low Cost ◽

Antibacterial Properties ◽

Rubber Matrix ◽

Diffusion Method ◽

Disk Diffusion Method ◽

E Coli ◽

Zones Of Inhibition ◽

Ft Ir ◽

The Mean

Ag-natural rubber (Ag-NR) hybrid sheets were successfully prepared with a very simple and low cost method. In this method, silver nanoparticles (AgNPs) were firstly synthesized by a rapid and green microwave-assisted using polyvinylpyrroridone (PVP) media. The effect of PVP weight ratios towards the size of AgNPs was also investigated. Then, Ag-NR hybrid sheet samples were prepared by latex mixing-casting method using concentrated natural rubber (NR) latex with the synthesized AgNPs colloids. The characteristic absorption, particles sizes and shapes of the obtained AgNPs were examined through UV-vis, TEM and SAED. Also, the prepared Ag-NR sheet samples were characterized using XRD, FT-IR, SEM and EDS techniques. It was found that the particles sizes of all the synthesized AgNPs had spherical-like shape, and the mean sizes were increased from 29.7 to 90.4 nm upon increasing PVP contents. EDS results showed the AgNPs were well-dispersed and impregnated into the rubber matrix. Moreover, the antibacterial properties of the prepared Ag-NR sheets were tested by agar disk-diffusion method with Gram-positive and Gram-negative bacteria as Staphylococcus aureus(S. aureus) and Escherichia coli(E. coli), respectively. The results showed that the hybrid sheets exhibited excellent antibacterial properties against these bacteria, in which the zones of inhibition were also dependent on the synthesized AgNPs by utilizing the different amounts of PVP.

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Disinfectant natural rubber films filled with modified zinc oxide nanoparticles: Synergetic effect of mechanical and antibacterial properties

eXPRESS Polymer Letters ◽

10.3144/expresspolymlett.2021.87 ◽

2021 ◽

Vol 15 (11) ◽

pp. 1081-1100

Author(s):

A. Krainoi ◽

K. Poomputsa ◽

E. Kalkornsurapranee ◽

J. Johns ◽

L. Songtipya ◽

...

Keyword(s):

Zinc Oxide ◽

Natural Rubber ◽

Zinc Oxide Nanoparticles ◽

Synergetic Effect ◽

Antibacterial Properties ◽

Oxide Nanoparticles

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Antibacterial And UV Protection Properties Modified Cotton Fabric Using Curcumin/ TiO2 Nanocomposite For Medical Textile Applications

10.21203/rs.3.rs-555492/v1 ◽

2021 ◽

Author(s):

M.M. Abd El-Hady ◽

A. Farouk ◽

S. El-Sayed Saeed ◽

S. Zaghloul

Keyword(s):

Antibacterial Activity ◽

Citric Acid ◽

Cotton Fabric ◽

Antibacterial Properties ◽

Uv Protection ◽

Chemical Mechanism ◽

Bacterial Strains ◽

Gram Positive ◽

Gram Negative ◽

Technical Textiles

Abstract Medical textiles are one of the most rapidly growing parts of the technical textiles sector of the textile industry. This work was developed for biocompatible materials of curcumin / TiO2 nanocomposite fabricated on the surface of cotton fabric for medical applications. Cotton fabric was pretreated with three crosslinking agents namely, citric acid, Quat-188, and GPTMS. Applying nanocomposite on modified cotton fabric using pad-dry cure method. The chemistry and morphology of modified fabrics are examined by Fourier-transformed infrared spectroscopy, energy-dispersive X-ray spectroscopy, and scanning electron microscopy. In addition, the chemical mechanism for nanocomposite modified fabric was reported. UV protection (UPF) and antibacterial properties against Gram - positive S. aureus and Gram - negative E. coli bacterial strains were investigated. The durability of fabrics to 20 washing cycles was also examined. Results demonstrated that nanocomposite modified cotton fabric exhibited superior antibacterial activity against Gram - negative bacteria that Gram - positive bacteria and excellent UV protection properties. Moreover, good durability was obtained, possibly due to the effect of the crosslinker used. Among the three pre-modification of cotton fabric, Quat-188 modified fabric reveals the highest antibacterial activity comparing with citric acid or GPTMS modified fabrics. This outcome suggested that curcumin / TiO2 nanocomposite Quatt-188 modified cotton fabric could be used in biomedical textile as antibacterial properties.

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