A new acrylamide- glyoxal-based, formaldehyde-free elastic and stiffness finishing process for silk fabric

2017 ◽  
Vol 88 (8) ◽  
pp. 873-881 ◽  
Author(s):  
Hanfang Feng ◽  
Yanfan Wu ◽  
Xuemei Feng ◽  
Ling Zhong ◽  
Fengxiu Zhang ◽  
...  
Keyword(s):  
Weight Gain ◽  
Spectroscopic Analysis ◽  
Breaking Strength ◽  
Silk Fabric ◽  
X Ray Diffraction ◽  
X Ray ◽  
Infrared Spectroscopic Analysis ◽  
Finishing Process ◽  
Silk Fabrics ◽  
Recovery Angle

A new formaldehyde-free reagent based on acrylamide and glyoxal was synthesized to improve the elasticity, stiffness, and weight gain of silk fabric. The finishing process could be completed rapidly in 20 seconds. The results showed that the elasticity, stiffness, and weight gain of silk fabric were efficiently improved. The stiffness was improved from 0.03 to 0.88 N·m, the delayed crease recovery angle was increased from 240° to 288.6°, and the weight gain could reach 18.1%. The finished silk fabrics were durable. The breaking strength and tear strength were substantially increased, and the whiteness of the silk was well maintained. Scanning electron microscopy revealed that the surface of the finished silk remained smooth. Fourier transform infrared spectroscopic analysis indicated the finishing reagent reacted on the silk, and X-ray diffraction analysis indicated that a new crystalline phase formed during the finishing process.

Textile Properties of Tussah Silk Fabric by Eco-Friendly Crosslinking Agents Modification

2014 ◽  
Vol 685 ◽  
pp. 68-71
Author(s):  
Zhi Mei Liu ◽  
Gang Li ◽  
De Hong Cheng ◽  
Yan Hua Lu
Keyword(s):  
Mechanical Properties ◽  
Citric Acid ◽  
Breaking Strength ◽  
Retention Rate ◽  
Silk Fabric ◽  
Treatment Conditions ◽  
Finishing Process ◽  
Silk Fabrics ◽  
Recovery Angle ◽  
Crosslinking Agents

To increase the wrinkle resistant property of tussah silk fabric, the eco-friendly crosslinking agents of citric acid (CA) was applied to tussah silk wrinkle resistant finishing process. Tussah silk fabric was treated with a conventional pad-dry-cure method. The finishing effects of tussah silk fabric including wrinkle recovery angle, whiteness and mechanical properties were characterized. The finishing agents CA in the presence of catalyst of sodium monophosphate (SHP) as well as the treatment conditions significantly affected the anti-wrinkle effects of treated tussah silk fabrics. The treated fabric samples showed increased wrinkle resistant property. The retention rate of breaking strength and whiteness of CA treatment tussah silk meet to the demands of the fabric treatment.

Research on Relationship between Fabric Breaking Strength and Antibacterial Property about Cactus Silver Nanoparticles Treated on Silk Fabric

2011 ◽  
Vol 332-334 ◽  
pp. 116-120
Author(s):  
Hong Chao Miao ◽  
Bo Jun Xi ◽  
Hong Lin ◽  
Yu Yue Chen
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Property ◽  
Breaking Strength ◽  
Raw Material ◽  
Added Value ◽  
Silk Fabric ◽  
Finishing Process ◽  
Dipping Temperature ◽  
Silk Fabrics ◽  
Natural Fabrics

Silk fabrics are highly popular with people for their excellent properties, with science and living standards progress, the natural and no added finishing method is pursuited by people especially, functional textile products become more and more popular. In this paper, silver nanoparticles were deoxygenated by using natural cactus solution. This silver nanaparticles were prepared under the unpolluted environment. The basic raw material is natural selection, preparation method is simple, non-polluting, eco-friendly and to address the reliability of a better way. Natural fabrics treated with natural plant, not only improve the added value of the product, but also achieve natural of the fabric, meet the requirements of the modern people. This research product the cactus silver nanoparticles silk fabric, demonstrated that the cactus solution can fix the nano-silver uniform on the surface of the silk fabric. Studied the antibacterial property of the silk fabric after finishing, discussed the fabric breaking strength and antibacterial property of silk fabric under different concentration、temperature and time. Finally, the best finishing process obtained is: 0.01mol/L silver ammonia is 2mL, the extract from cactus is 50mL, liquor ratio is 1:50, dipping temperature is 60°C, dipping time is 60min.

Zeolite-encapsulated Mn(II) Complex: A New Nano Catalyst for the Synthesis of Modafinil and Its Derivatives

2019 ◽  
Vol 16 (7) ◽  
pp. 541-549 ◽  
Author(s):  
Mohammad Javad Taghizadeh ◽  
Huoman Karimi ◽  
Akbar Mirzaie
Keyword(s):  
Thermal Analysis ◽  
Schiff Base ◽  
Spectroscopic Analysis ◽  
Zeolite Y ◽  
Reflectance Spectroscopy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Infrared Spectroscopic Analysis ◽  
Nano Catalyst ◽  
N2 Sorption

The Mn-hydrazone Schiff base encapsulated into NaY has been prepared and characterized as a new heterogeneous catalyst. Elemental analysis, UV-Vis, infrared spectroscopic analysis, diffused reflectance spectroscopy, thermal analysis, small angle X-ray diffraction, and N2 sorption demonstrate the existence of Mn-hydrazone schiff base in the nanopores of zeolite-Y. MnII(Hsal- hrz)/Y, which showed excellent catalytic property in oxidation with various sulfide compounds including important drugs such as adrafinil and modafinil, using hydroperoxide-urea (UHP) as oxidant. Thioanisole conversion was high (98%).

Structural and Optical Characterization of ZnO and Glucose Capped ZnO Nanoparticles

2018 ◽  
Vol 21 (1) ◽  
pp. 001-005 ◽  
Author(s):  
A. Dhanalakshmi ◽  
S. Thanikaikarasan ◽  
B. Natarajan ◽  
V. Ramadas ◽  
T. Mahalingam ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Spectroscopic Analysis ◽  
Optical Characterization ◽  
Hexagonal Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Infrared Spectroscopic Analysis ◽  
Structure Surface ◽  
Chemical Reaction Method

Zinc Oxide and Glucose capped Zinc Oxide nanoparticles have been prepared using modified chemical reaction method. X-ray diffraction analysis showed that the prepared samples possess polycrystalline nature with hexagonal structure. Surface morphology has been analyzed using scanning electron microscopy. The estimated value of band gap was found to be 3.41 and 3.87 eV for Zinc Oxide and Glucose capped ZnO respectively. Fourier Transform Infrared spectroscopic analysis has been carried out to find the chemical bond and elemental composition present in Zinc Oxide and Glucose capped Zinc Oxide.

scholarly journals Influence of OH−Ion Concentration on the Surface Morphology of ZnO-SiO2Nanostructure

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Jessica Ven G. Tinio ◽  
Key T. Simfroso ◽  
Amber Dea Marie V. Peguit ◽  
Rolando T. Candidato
Keyword(s):  
Electron Microscopy ◽  
Surface Morphology ◽  
Spectroscopic Analysis ◽  
Ion Concentration ◽  
X Ray Diffraction ◽  
Remarkable Change ◽  
X Ray ◽  
Infrared Spectroscopic Analysis ◽  
Surface Capping ◽  
Scanning Electron

The influence of varying OH−ion concentration on the surface morphology of chemically deposited ZnO-SiO2nanostructures on glass substrate was investigated. The morphological features, phase structure, and infrared characteristics were examined by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR), respectively. Results revealed that silica significantly changes the hexagonal morphology of bare ZnO rod to “pointed tips” when using low initial OH−precursor concentration. Increasing OH−ion concentration resulted in a “flower-like” formation of ZnO-SiO2and a remarkable change from “pointed tips” to “hemispherical tips” at the top surface of the rods. The surface capping of SiO2to ZnO leads to the formation of these “hemispherical tips.” The infrared spectroscopic analysis showed the characteristics peaks of ZnO and SiO2as well as the Si-O-Zn band which confirms the formation of ZnO-SiO2. Phase analysis manifested that the formed ZnO-SiO2is of wurtzite structure. Furthermore, a possible growth mechanism is proposed based on the obtained results.

scholarly journals Actinomycin X2, an Antimicrobial Depsipeptide from Marine-Derived Streptomyces cyaneofuscatus Applied as a Good Natural Dye for Silk Fabric

Marine Drugs ◽  
2021 ◽  
Vol 20 (1) ◽  
pp. 16
Author(s):  
Wei Chen ◽  
Kaixiong Ye ◽  
Xiaoji Zhu ◽  
Huihui Zhang ◽  
Ranran Si ◽  
...  
Keyword(s):  
Clinical Medicine ◽  
Antibacterial Properties ◽  
Natural Dye ◽  
Silk Fabric ◽  
X Ray Diffraction ◽  
X Ray ◽  
Safety Property ◽  
Ft Ir ◽  
Silk Fabrics ◽  
Dyed Fabric

Actinomycins as clinical medicine have been extensively studied, while few investigations were conducted to discover the feasibility of actinomycins as antimicrobial natural dye contributing to the medical value of the functional fabrics. This study was focused on the application of actinomycin X2 (Ac.X2), a peptide pigment cultured from marine-derived Streptomyces cyaneofuscatus, in the dyeing and finishing of silk fabric. The dyeing potential of Ac.X2 with silk vs. cotton fabrics was assessed. As a result, the silk fabric exhibited greater uptake and color fastness with Ac.X2. Through Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and X-ray diffraction (XRD) analyses, some changes of chemical property for the dyed fabric and Ac.X2 were studied. The silk fabric dyed with Ac.X2 exhibited good UV protection ability. The antibacterial properties of dyed and finished silk were also evaluated, which exhibited over 90% antibacterial activity even after 20 washing cycles. In addition, the brine shrimp assay was conducted to evaluate the general toxicity of the tested fabric, and the results indicated that the dyed silk fabrics had a good biological safety property.

Aspects of the structure and composition of baleen, and some effects of exposure to petroleum hydrocarbons

1984 ◽  
Vol 62 (2) ◽  
pp. 193-198 ◽  
Author(s):  
D. J. St. Aubin ◽  
R. H. Stinson ◽  
J. R. Geraci
Keyword(s):  
Petroleum Hydrocarbons ◽  
Trichloroacetic Acid ◽  
Breaking Strength ◽  
X Ray Diffraction ◽  
Balaenoptera Physalus ◽  
Fin Whale ◽  
X Ray ◽  
The Matrix ◽  
Spilled Oil ◽  
Iron And Calcium

The structure and composition of baleen from seven species of whales was studied using tensiometry. X-ray diffraction, and elemental analysis. Baleen was found to be composed principally of amorphous and α-keratin. Hydroxyapatite (bone mineral, Ca10 (PO4)6 OH2) was present in all species. Certain elements, notably manganese, copper, boron, iron, and calcium were more highly concentrated in the fibers than in the matrix of the plate. The breaking strength of baleen plates from fin (Balaenoptera physalus), sei (B. borealis), and grey (Eschrichtius robustus) whales was comparable to that of buffalo horn, in the range of 2−9 × 106 N∙m−2. The stiffness of baleen was somewhat less than that of other keratinized tissues. Treatment with 10% (v/v) trichloroacetic acid for 8 days removed most of the calcium salts, denatured α-keratin, and made fin whale plates stronger and stiffer. Exposure to gasoline for 1.5 h or 14 days, crude oil for 8 days, or tar for 21 days resulted in loss of trace elements from baleen, and inconsistent changes in keratin organization. After tar exposure, fin whale baleen plates were stiffer and stronger. We presume that at sea, baleen would be relatively resistant to damage by spilled oil.

Dyeing Ramie Fabrics With Curcumin in NaOH/Urea Solution at Low Temperature

2018 ◽  
Vol 37 (1) ◽  
pp. 66-79 ◽  
Author(s):  
Sijun Li ◽  
Ming Lu ◽  
Ruimin Hu ◽  
Tian Tang ◽  
Keru Hou ◽  
...  
Keyword(s):  
Low Temperature ◽  
Breaking Strength ◽  
Urea Solution ◽  
Ramie Fiber ◽  
X Ray Diffraction ◽  
Dyeing Properties ◽  
X Ray ◽  
Washing Fastness ◽  
Urea Aqueous Solution ◽  
Color Depth

To improve dyeing properties of ramie fabrics, sodium hydroxide/urea (NaOH/urea) was used as curcumin solvent and ramie-fiber swelling solvent. Ramie fabrics were dyed with curcumin in NaOH/urea aqueous solution at low temperature without using any mordants. The color depth (K/S) value, washing fastness, ultraviolet–visible spectrophotometry were measured to investigate dyeing properties of the ramie with curcumin in NaOH/urea solution at low temperature. Meanwhile, X-ray diffraction and breaking strength were used to determine the structure of the ramie in NaOH/urea solution. Curcumin could be dissolved completely in NaOH/urea solution, and crystallinity of ramie fiber was decreased a little. The K/S value of dyed ramie fabrics in NaOH/urea solution increased around 4-fold compared to dyed ramie fabrics in water. The dyed ramie fabrics in NaOH/urea solution displayed good washing fastness. In addition, dyed ramie fabrics in NaOH/urea solution revealed anti-ultraviolet properties.

INVESTIGATION ON HIGH-TEMPERATURE CORROSION BEHAVIOR OF INCONEL 600 UNDER SO2-BEARING GAS AT 650°C

2019 ◽  
Vol 27 (06) ◽  
pp. 1950155
Author(s):  
KWANG-HU JUNG ◽  
SEONG-JONG KIM
Keyword(s):  
Electron Microscope ◽  
Weight Gain ◽  
High Temperature ◽  
Scanning Electron Microscope ◽  
High Temperature Corrosion ◽  
X Ray Diffraction ◽  
Oxide Structure ◽  
X Ray ◽  
Inconel 600 ◽  
Scanning Electron

The corrosion characteristics of Inconel 600 were investigated at 650∘C in air and 76%[Formula: see text]%[Formula: see text]%[Formula: see text]%SO2 gas environment up to 500[Formula: see text]h. Specimens exposed to each condition were characterized by weight gain, scanning electron microscope, energy dispersive X-ray spectroscopy and X-ray diffraction. The oxide structure consisting of the thin Cr2O3 layer and Cr2O3 nodules was observed, which increased the weight gain of specimens. In the SO2-bearing gas, it showed a bigger weight gain due to the coarsening of Cr2O3 nodules. Therefore, it was suggested that the sulfur-accelerated coarsening of Cr2O3 nodules at the high temperature.

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