Pre-treatment and preparation of textile materials prior to dyeing

2011 ◽  
pp. 64-149 ◽  
Author(s):  
A.K. Roy Choudhury
Keyword(s):  
Textile Materials ◽  
Pre Treatment

A Study of Absorption Properties Improvement of Cotton Blended Fabric

2013 ◽  
Vol 559 ◽  
pp. 13-18 ◽  
Author(s):  
Anna Borisova ◽  
Skaidrīte Reihmane
Keyword(s):  
Cold Treatment ◽  
Alkaline Treatment ◽  
Textile Materials ◽  
Colour Measurements ◽  
Vertical Wicking ◽  
Finishing Process ◽  
Different Temperatures ◽  
Treatment Technologies ◽  
Pre Treatment ◽  
Twill Weave

Successful results of textile materials finishing process in order to gain desired properties to the fabric according to customers’ demands mainly depend on properly-carried pre-treatment stages. The present study covers twill weave cotton/polyester fabric’s modification in alkaline medium at different temperatures and treatment durations through exhaustion (hot and cold treatment) and pad-steam process. An influence of the reduction agent addition was ascertained. Weight loss, water absorbency, vertical wicking, dye uptake, colour measurements, surface morphology and psysicomechanical characteristics were determined. Samples and recommendations of optimal alkaline treatment technologies are developed.

scholarly journals Tip-Cylinder Electrode Plasma to Enhance the Coating of Conductive Yarn Process

2020 ◽  
Vol 14 (2) ◽  
pp. 213
Author(s):  
Valentinus Galih Vidia Putra ◽  
Lutfi Zulfikar ◽  
Atin Sumihartanti ◽  
Juliany Ningsih Mohamad ◽  
Yusril Yusuf
Keyword(s):  
Electrical Conductivity ◽  
Plasma Treatment ◽  
Plasma Generator ◽  
Textile Yarn ◽  
Textile Materials ◽  
Conductive Yarns ◽  
Coating Method ◽  
Pre Treatment ◽  
Conductive Textile ◽  
Conductive Yarn

This study aims to develop conductive textile materials using a polyester textile yarn by applying a knife coating method and pre-treatment of a tip-cylinder plasma electrode. In this research, carbon ink was coated on polyester staple yarn which was given a pre-treatment with a plasma generator and coated with the knife coating method. The electrical conductivity of conductive yarns produced from this study was divided into two types, as yarns without plasma treatment and with plasma treatment with a ratio of water and carbon ink concentrations of 1:1 and 2:1. The results of the electrical conductivity with plasma treatment and the concentration of carbon ink and water of 1:1 and 1:2 were 69005 (Ωm)-1 and 50144.25 (Ωm)-1, respectively, while the results of the electrical conductivity for threads with concentrations of carbon ink and water of 1:1 and 1:2 without plasma treatment were 18197.64 (Ωm)­‑1  and 8873.54 (Ωm)-1, respectively. The results showed that the concentration of carbon ink and water and plasma treatment affected the conductive value of the yarn. The results also showed that the presence of plasma pre-treatment improved the coating process of conductive ink on the yarn.Keywords: carbon ink; conductive yarn; plasma; textile A B S T R A KPenelitian ini bertujuan untuk mengembangkan bahan tekstil konduktif menggunakan benang tekstil poliester dengan mengaplikasikan metode knife coating dan pre-treatment plasma elektroda tip-cylinder. Pada penelitian ini dilakukan pelapisan dengan tinta karbon pada benang poliester stapel yang diberi perlakuan awal dengan plasma generator dan dilapisi dengan metode pelapisan knife coating. Konduktivitas listrik benang konduktif yang dihasilkan dari penelitian ini dibagi menjadi dua jenis, yaitu benang tanpa perlakuan plasma dan dengan perlakuan plasma dengan perbandingan konsentrasi air dan tinta karbon sebesar 1:1 dan 2:1. Hasil konduktivitas listrik dengan perlakuan plasma dan konsentrasi tinta karbon dan air sebesar 1:1 dan 1:2 masing-masing adalah 69005 (Ωm)‑1 dan 50144,25 (Ωm)-1, sedangkan hasil konduktivitas listrik untuk benang dengan konsentrasi tinta karbon dan air sebesar 1:1 dan 1:2 tanpa perlakuan plasma masing-masing adalah 18197,64 (Ωm)-1 dan 8873,54 (Ωm)-1. Hasil penelitian menunjukkan bahwa konsentrasi tinta karbon dan air serta perlakuan plasma berpengaruh terhadap nilai konduktivitas benang serta adanya pre-treatment plasma dapat meningkatkan proses coating tinta konduktif pada benang.Kata kunci: benang konduktif; plasma; tekstil; tinta karbon 

scholarly journals ЕКОЛОГІЧНО-БЕЗПЕЧНА ТЕХНОЛОГІЯ ОЗДОБЛЕННЯ ТЕКСТИЛЬНИХ МАТЕРІАЛІВ З ВИКОРИСТАННЯМ ЕКСТРАКТУ ЧАШОЛИСТОК ПОЛУНИЦІ

2020 ◽  
Vol 142 (1) ◽  
pp. 102-111
Author(s):  
В. П. Плаван ◽  
І. М. Ткаченко ◽  
І. О. Ляшок ◽  
В. І. Ступа
Keyword(s):  
Cellulose Fibers ◽  
Metal Salts ◽  
Color Fastness ◽  
Technological Parameters ◽  
Textile Materials ◽  
Dyeing Process ◽  
Safe Technology ◽  
Wool Textile ◽  
Wool Fibers ◽  
Pre Treatment

Development of ecologically safe technology of finishing the textile materials using strawberry sepals extract and determination of influence for a mordant with salts from various metals on coloring quality. The technological parameters of the dyeing process by strawberry sepals extract were determined for linen, cotton, viscose and wool textile materials using pre-treatment with or without metal salts of Cu2+, Zn2+, Ni2+, Fe3+, Al3+. The color characteristics of the samples were determined using Adobe Photoshop CS6 software to evaluate the color quality. The resistance of the dyeing the textile materials to physical and chemical influences were determined by standard methods for textile materials. Ecologically safe technology of finishing the cellulosic and wool textile materials using strawberry sepals extract has been developed. The dyeing of textile materials made from cellulose fibers made it possible to obtain coloration from light to dark brown. After dyeing, the brightest samples were found based on wool fibers. Depending on the type of mordant, the following colors were obtained: Cu2+ cation made it possible to obtain green-brown shades, Al3+, Zn2+, Ni2+ cations gave colors in the yellow-brown shades; Fe3+ cation gave colors in black and brown shades. In general, the color fastness to wet and dry crocking for textile materials after dyeing with strawberry sepals extract are maximum for all specimens pre-treated with ferric cations except cotton and linen materials. The stability of color to perspiration in cotton, linen, viscose and wool samples ranges from 4 to 5 points. Color fastness to washing for samples from cellulose fibers are preferably 4-5 points, and for woolen is 4 points. The scientific novelty of the work is to determine the basic regularities of the dyeing process after pre-treatment with salts of metals Cu2+, Zn2+, Ni2+, Fe3+, Al3+ using as a dye of the strawberries sepals extract, which is a waste of the food industry. The technological parameters of the dyeing process by strawberry sepals extract, for cotton, viscose and woolen textile materials using pretreatment with metal salts of Cu2+, Zn2+, Ni2+, Fe3+, Al3+ were developed.

EELS characterization of “Smut” layer films on steel surface prepared for chrome plating by anodic etching

1995 ◽  
Vol 53 ◽  
pp. 538-539
Author(s):  
E Y. Wang ◽  
J. T. Cherian ◽  
A. Madsen ◽  
R. M. Fisher
Keyword(s):  
Steel Surface ◽  
Surface Preparation ◽  
Treatment Method ◽  
Chrome Plating ◽  
Transmission Electron ◽  
Alloy Steels ◽  
Pre Treatment ◽  
Hard Chrome ◽  
Electron Energy Loss

Many steel parts are electro-plated with chromium to protect them against corrosion and to improve their wear-resistance. Good adhesion of the chrome plate to the steel surface, which is essential for long term durability of the part, is extremely dependent on surface preparation prior to plating. Recently, McDonnell Douglas developed a new pre-treatment method for chrome plating in which the steel is anodically etched in a sulfuric acid and hydrofluoric acid solution. On carbon steel surfaces, this anodic pre-treatment produces a dark, loosely adhering material that is commonly called the “smut” layer. On stainless steels and nickel alloys, the surface is only darkened by the anodic pre-treatment and little residue is produced. Anodic pre-treatment prior to hard chrome plating results in much better adherence to both carbon and alloy steels.We have characterized the anodic pre-treated steel surface and the resulting “smut” layer using various techniques including electron spectroscopy for chemical analysis (ESCA) on bulk samples and transmission electron microscopy (TEM) and electron energy-loss spectroscopy (EELS) on stripped films.

Evaluating the effect of a group pre-treatment chemotherapy psycho-education session for chemotherapy-naive gynecologic cancer patients and their caregivers

2021 ◽  
Vol 160 (1) ◽  
pp. 234-243
Author(s):  
Diana Samoil ◽  
Nazek Abdelmutti ◽  
Lisa Ould Gallagher ◽  
Nazlin Jivraj ◽  
Naa Kwarley Quartey ◽  
...  
Keyword(s):  
Cancer Patients ◽  
Gynecologic Cancer ◽  
Education Session ◽  
Pre Treatment

The Effect of Dietary Glutathione and Coenzyme Q10 on the Prevention and Treatment of Inflammatory Bowel Disease in Mice

2004 ◽  
Vol 74 (1) ◽  
pp. 74-85 ◽  
Author(s):  
Liu ◽  
Russell ◽  
Smith ◽  
Bronson ◽  
Milbury ◽  
...  
Keyword(s):  
Inflammatory Bowel Disease ◽  
Bowel Disease ◽  
Dextran Sulfate ◽  
Coenzyme Q ◽  
Histological Evaluation ◽  
Therapeutic Effects ◽  
Prevention Study ◽  
Prevention And Treatment ◽  
Inflammatory Bowel ◽  
Pre Treatment

Because reactive oxygen species have been implicated as mediators of inflammatory bowel disease (IBD), we evaluated the potential preventive and therapeutic effects of two dietary antioxidants, glutathione (GSH) and coenzyme Q10 (CoQ10) on dextran sulfate sodium (DSS)-induced colitis in mice. Fifty female 8-wk old Swiss-Webster mice were randomly assigned to 4 groups for a pre-treatment 'prevention' study: (1) GSH (1% of diet); (2) CoQ10 (200 mg/kg/d); (3) DSS only (3% of drinking water); (4) control (no treatment). The mice in groups 1 and 2 were fed with GSH or CoQ10 for 21 wks, and the mice in groups 1, 2 and 3 were provided DSS from wk 7 for 4 cycles (1 cycle = 1 wk DSS followed by 2-wk water). Another 50 mice were randomly assigned to 4 groups for a 21-wk 'treatment' study where the mice in groups 1, 2, and 3 were administered DSS for 6 cycles (18 wks) to induce colitis. GSH and CoQ10 were added from wk 7 until the completion of the protocol. Loose stools and hemocult positivity were modestly but significantly reduced with GSH or CoQ10 at several periods during the intervention in both the prevention and treatment studies. In contrast, histological evaluation revealed increases in colonic dysplasia and ulceration with GSH or CoQ10. Thus, in this mouse model, GSH and CoQ10 appear to have a beneficial effect on acute signs of IBD, but may have an adverse impact on the chronic pathophysiology of the disease. Further studies using additional animal models are required to determine whether GSH or CoQ10 provide a favorable or unfavorable benefit:risk ratio in the prevention or treatment of IBD.

Cytoprotective Effect of Tocotrienol-Rich Fraction and α-Tocopherol Vitamin E Isoforms Against Glutamate-Induced Cell Death in Neuronal Cells

2014 ◽  
Vol 84 (3-4) ◽  
pp. 0140-0151 ◽  
Author(s):  
Thilaga Rati Selvaraju ◽  
Huzwah Khaza’ai ◽  
Sharmili Vidyadaran ◽  
Mohd Sokhini Abd Mutalib ◽  
Vasudevan Ramachandran ◽  
...  
Keyword(s):  
Vitamin E ◽  
Cell Viability ◽  
Neuronal Cells ◽  
Positive Control ◽  
Post Treatment ◽  
Mitochondrial Activity ◽  
Before And After ◽  
Pre Treatment ◽  
Tocotrienol Rich Fraction ◽  
Major Mediator

Glutamate is the major mediator of excitatory signals in the mammalian central nervous system. Extreme amounts of glutamate in the extracellular spaces can lead to numerous neurodegenerative diseases. We aimed to clarify the potential of the following vitamin E isomers, tocotrienol-rich fraction (TRF) and α-tocopherol (α-TCP), as potent neuroprotective agents against glutamate-induced injury in neuronal SK-N-SH cells. Cells were treated before and after glutamate injury (pre- and post-treatment, respectively) with 100 - 300 ng/ml TRF/α-TCP. Exposure to 120 mM glutamate significantly reduced cell viability to 76 % and 79 % in the pre- and post-treatment studies, respectively; however, pre- and post-treatment with TRF/α-TCP attenuated the cytotoxic effect of glutamate. Compared to the positive control (glutamate-injured cells not treated with TRF/α-TCP), pre-treatment with 100, 200, and 300 ng/ml TRF significantly improved cell viability following glutamate injury to 95.2 %, 95.0 %, and 95.6 %, respectively (p < 0.05).The isomers not only conferred neuroprotection by enhancing mitochondrial activity and depleting free radical production, but also increased cell viability and recovery upon glutamate insult. Our results suggest that vitamin E has potent antioxidant potential for protecting against glutamate injury and recovering glutamate-injured neuronal cells. Our findings also indicate that both TRF and α-TCP could play key roles as anti-apoptotic agents with neuroprotective properties.

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