Antibacterial Functionalization of Silk Fabrics following in Situ Coloring with Diazo Salts

2019 ◽  
pp. 1-14
Author(s):  
Ye Wei ◽  
Xuejie Yu ◽  
Ping Wang ◽  
Yuanyuan Yu ◽  
Jiugang YUAN ◽  
...  
Keyword(s):  
Silk Fabrics ◽  
Antibacterial Functionalization

Preparation of Organic Pigment Microcapsules and its Application in Pigment Printing of Silk Fabric

2012 ◽  
Vol 441 ◽  
pp. 145-149 ◽  
Author(s):  
Feng Yu She ◽  
Dong Ming Qi ◽  
Zhi Jie Chen ◽  
Jian Zhong Shao ◽  
Lei Yang
Keyword(s):  
Miniemulsion Polymerization ◽  
The Self ◽  
Silk Fabric ◽  
Organic Pigment ◽  
Polymeric Layer ◽  
Particles Size Distribution ◽  
Silk Fabrics ◽  
Fabric Surface ◽  
Better Than

A series of submicron organic pigment microcapsules with high pigment encapsulating efficiency and narrow particles size distribution was prepared via in-situ miniemulsion polymerization. The self-adhesive pigment microcapsules were applied to pigment printing of silk fabrics. It was found from printing qualities that, the K/S value, handle, dry and wet rubbing fastness of silk fabrics printed by pigment microcapsules were much better than those printed by traditional pigment paste. The TEM observation of the printed fabrics further indicated that the presence of adhesive polymeric layer on the pigment particles can remarkably improve the dispersion of pigment particles on fabric surface and the adhesion between pigment particles and the target fabric.

scholarly journals Functionalization of Silk with In-Situ Synthesized Platinum Nanoparticles

Materials ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 1929 ◽  
Author(s):  
Fan Zou ◽  
Ji Zhou ◽  
Jin Zhang ◽  
Jingliang Li ◽  
Bin Tang ◽  
...  
Keyword(s):  
Platinum Nanoparticles ◽  
Photoelectron Spectroscopy ◽  
Ph Value ◽  
Ion Concentration ◽  
Chemical Components ◽  
Color Fastness ◽  
Color Strength ◽  
Catalytic Function ◽  
Silk Fabrics

After platinum nanoparticles (PtNPs) were in-situ synthesized on silk fabrics through heat treatment, it was determined that the treatment of the silk fabrics with PtNPs imparted multiple functions, including coloring, catalysis, and antibacterial activity. The formation of PtNPs on fabrics was affected by the Pt ion concentration, pH value of solution, and reaction temperature. Acidic condition and high temperature were found to facilitate the formation of PtNPs on silk. The color strength of silk fabrics increased with the concentration of Pt ions. The PtNP treated silk fabrics exhibited reasonably good washing color fastness and excellent rubbing color fastness. The morphologies and chemical components of the treated silk fabrics were analyzed using scanning electron microscopy and X-ray photoelectron spectroscopy. The PtNP treated silk fabric exhibited significant catalytic function and a notable antibacterial effect against Escherichia coli (E. coli).

Fabrication of Antibacterial and UV Protective Silk Fabrics via in Situ Generating ZnO Nanoparticles by Hyperbranched Polymer

2013 ◽  
Vol 796 ◽  
pp. 374-379 ◽  
Author(s):  
Yan Fen Liao ◽  
De Suo Zhang ◽  
Yu Yue Chen ◽  
Hong Lin
Keyword(s):  
Zno Nanoparticles ◽  
Hyperbranched Polymer ◽  
Antibacterial Activities ◽  
Zinc Nitrate ◽  
Bacterial Reduction ◽  
Silk Fibers ◽  
One Step ◽  
Uv Protective Properties ◽  
Silk Fabrics

This paper presents a method of fabricating ZnO nanoparticles coated silk fabrics via a one-step in situ generation and deposition reaction. In this procedure, amino terminated hyperbranched polymer (HBP-NH2) and zinc nitrate were used as the precursors without any other binders. The results indicated that UV protective properties and antibacterial activities of treated silk fabrics grew in quantity with increase of the concentration of precursors in this reaction process. When the concentration of HBP-NH2and zinc nitrate were 24 g/L and 17.85g/L respectively, the UPF value of treated silk fabric was 131 and the bacterial reduction rates againstStaphylococcus aureusandEscherichia coliboth exceeded 99%. Moreover, the treated silk fabrics were characterized by FESEM, EDS and XRD which demonstrated that the ZnO nanoparticles coated on the silk fibers successfully and well dispersed with diameter around 90nm.

In-situ synthesis of gold nanoparticles for multifunctionalization of silk fabrics

2014 ◽  
Vol 103 ◽  
pp. 183-190 ◽  
Author(s):  
Bin Tang ◽  
Lu Sun ◽  
Jasjeet Kaur ◽  
Yao Yu ◽  
Xungai Wang
Keyword(s):  
Gold Nanoparticles ◽  
In Situ Synthesis ◽  
Silk Fabrics

Fabrication of multifunctional silk fabrics via one step in-situ synthesis of ZnO

2019 ◽  
Vol 237 ◽  
pp. 149-151 ◽  
Author(s):  
Jingjing Huang ◽  
Yingying Yang ◽  
Ling Yang ◽  
Yiming Bu ◽  
Tian Xia ◽  
...  
Keyword(s):  
In Situ Synthesis ◽  
One Step ◽  
Silk Fabrics

scholarly journals Complex coloration and antibacterial functionalization of silk fabrics based on noble metal nanoparticles

2019 ◽  
Vol 14 ◽  
pp. 155892501986694 ◽  
Author(s):  
Zhanyu Zhang ◽  
Xiaodan Lv ◽  
Qidan Chen ◽  
Jing An
Keyword(s):  
Silver Nanoparticles ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Fiber Surface ◽  
Noble Metal Nanoparticles ◽  
Localized Surface Plasmon ◽  
Color Strength ◽  
Gold And Silver Nanoparticles ◽  
Silk Fabrics

Noble metal nanoparticles and traditional dyes jointly colorate silk fabrics. Gold and silver nanoparticles were in situ synthesized on silk fabrics, and the complex coloration was realized by the integration of traditional dyes into the treated silk. The localized surface plasmon resonance properties of gold and silver nanoparticles were not affected by the coloration of dyed-on silk fabrics. The combined optical properties of nanoparticles and dyes extended the color range and enhanced the color strength (K/S) of silk fabrics. Ultraviolet–visible diffuse absorption spectroscopy and scanning electron microscopy demonstrated the in situ synthesis of gold and silver nanoparticles on silk fabrics. The coloration of traditional dyes influenced the morphologies of gold and silver nanoparticles on fiber surface slightly. The silk fabrics with complex coloration showed significant antibacterial property. The complex coloration based on particular nanoparticles and dyes provides a promising strategy to develop multifunctional textiles.

Rendez vous with Saturn's rings

1984 ◽  
Vol 75 ◽  
pp. 743-759 ◽  
Author(s):  
Kerry T. Nock
Keyword(s):  
Solar Energy ◽  
Electric Propulsion ◽  
Power Source ◽  
Propulsion System ◽  
Low Thrust ◽  
Ring Plane ◽  
The Earth ◽  
Total Impulse ◽  
Saturn's Rings

ABSTRACTA mission to rendezvous with the rings of Saturn is studied with regard to science rationale and instrumentation and engineering feasibility and design. Future detailedin situexploration of the rings of Saturn will require spacecraft systems with enormous propulsive capability. NASA is currently studying the critical technologies for just such a system, called Nuclear Electric Propulsion (NEP). Electric propulsion is the only technology which can effectively provide the required total impulse for this demanding mission. Furthermore, the power source must be nuclear because the solar energy reaching Saturn is only 1% of that at the Earth. An important aspect of this mission is the ability of the low thrust propulsion system to continuously boost the spacecraft above the ring plane as it spirals in toward Saturn, thus enabling scientific measurements of ring particles from only a few kilometers.

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