Colour difference analysis of lightfastness for some direct dyes

1985 ◽  
Vol 6 (2) ◽  
pp. 85-95 ◽  
Author(s):  
Moustafa Ibrahim ◽  
S. Shakra
Keyword(s):  
Direct Dyes ◽  
Colour Difference ◽  
Difference Analysis

Colour difference analysis of lightfastness for some vat dyes

1986 ◽  
Vol 7 (1) ◽  
pp. 65-76 ◽  
Author(s):  
S. Shakra ◽  
Moustafa Ibrahim ◽  
A.B. Amera
Keyword(s):  
Colour Difference ◽  
Vat Dyes ◽  
Difference Analysis

Performance analysis of Polyvinylpyrrolidone

2019 ◽  
Vol 31 (5) ◽  
pp. 619-629
Author(s):  
R. Rathinamoorthy
Keyword(s):  
Performance Analysis ◽  
Dye Transfer ◽  
Direct Dyes ◽  
Colour Difference ◽  
Content Type ◽  
Stain Removal ◽  
Washing Efficiency ◽  
Transfer Inhibitor ◽  
Commercial Detergent ◽  
Chitosan Composite

Purpose The purpose of this paper is to focus on the performance analysis of Polyvinylpyrrolidone (PVP) – Chitosan composite dye transfer inhibitor (DTI) for household laundry. The developed composite DTI is tested against different commercial dyes and detergent powders normally used in the household laundry for its performance. Design/methodology/approach The DTI article is tested for its performance against five commercial dyes and five commercial detergent compositions. The dye re-deposition behaviour of the control fabric was measured in terms of the colour difference (ΔE) values. The influence of PVP on the washing efficiency of detergent was evaluated against tea, coffee and juice stains. Findings The results showed that there is an excellent performance of the developed product noted in terms of DTI performance against reactive, basic and sulfur dyes. The DTI product showed a significantly (p<0.05) less performance against acid and direct dyes. There is no significant differences noted in the stain removal efficiency of the detergent in the presence of PVP in the wash liquor (p>0.05). Originality/value The usage of DTI polymer in the household laundry has no significant influence on the detergents performance in terms of stain removing efficiency. The DTI polymer’s function in the wash liquor depends up on the type of polymer used, as they are sensitive to the type of detergent compositions used and the type of dyes bleeds in the wash liquor.

Estimation of tea quality by infusion colour difference analysis

2004 ◽  
Vol 85 (2) ◽  
pp. 286-292 ◽  
Author(s):  
Yuerong Liang ◽  
Jianliang Lu ◽  
Lingyun Zhang ◽  
Shan Wu ◽  
Ying Wu
Keyword(s):  
Colour Difference ◽  
Difference Analysis ◽  
Tea Quality

Combine Nanoprobing Technique with Difference Analysis to Identify Nonvisual Failures

2006 ◽  
Author(s):  
Cha-Ming Shen ◽  
Tsan-Cheng Chuang ◽  
Jie-Fei Chang ◽  
Jin-Hong Chou
Keyword(s):  
Failure Mode ◽  
Failure Modes ◽  
Electrical Characteristic ◽  
The Novel ◽  
Difference Analysis ◽  
Original Idea ◽  
Deductive Method ◽  
Complete Measurement

Abstract This paper presents a novel deductive methodology, which is accomplished by applying difference analysis to nano-probing technique. In order to prove the novel methodology, the specimens with 90nm process and soft failures were chosen for the experiment. The objective is to overcome the difficulty in detecting non-visual, erratic, and complex failure modes. And the original idea of this deductive method is based on the complete measurement of electrical characteristic by nano-probing and difference analysis. The capability to distinguish erratic and invisible defect was proven, even when the compound and complicated failure mode resulted in a puzzling characteristic.

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