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Influence of Natural Mordants in Coloration of Cotton Knitted Fabric with Mango Seed Kernel Extract Dyes

Mohammad Saiful Islam
Department of Textile Engineering, Uttara University, Uttara, Dhaka, Bangladesh

Priti Sarker*
Department of Textile Engineering, Mawlana Bhashani Science and Technology University, Santosh, Tangail-1902, Bangladesh

Md. Abdullah Al Mamun
Department of Textile Engineering, Mawlana Bhashani Science and Technology University, Santosh, Tangail-1902, Bangladesh

S.M. Farhana Iqbal
Department of Yarn Engineering, Bangladesh University of Textiles, Tejgaon, Dhaka-1209, Bangladesh

Abstract/ Executive Summary:

The sustainability of the environment is hampered day by day. People are more concern about environment and health including different types of goods e.g. textile goods. As a result, the researchers are interested to study environment-friendly dyeing as natural dyeing. In this research bleached single jersey cotton knitted fabric (sample size: 7 inch × 7 inch) having areal density of 148 grams per square meter has been treated with some natural extract like pomagranate peel seeds, pomegranate peel bark, leaf of Thujaorientalis and leaf of Araucaria exelsa as mordanting agents. The treated samples have been dyed with natural dyes extracted from mango seed kernel (Mangiferaindica L.) and the dyeing performance was evaluated by several elementary parameters such as color strength (K/S value),color fastness to rubbing, color fastness to wash, color fastness to perspiration (acid & alkali). Mordanting was done at 95⁰c temperature for 60 mins in exhaust method using lab sample dyeing machine. The dyeing was carried out at 100⁰c temperature for 60 mins at same machine. The results illustrated that color strength (k/s value) increases in all cases. Pomagranate peel bark treated sample shows maximum (3.52) color strength (k/s value). Different natural mordants influenced the fastness properties of the dyed samples in different way. Araucaria exelsa treated fabric exhibited higher washing resistance in comparisons to other mordants.

Keywords: Natural Mordants, Coloration, Mango seed, Dyeing properties

Location: Department of Textile Engineering, Uttara University, Uttara, Dhaka, Bangladesh

Start Date:

End Date:

Program Area: Resource Development and Management

Commodity: Mango

Objectives:

The aim of this work is to dye cotton knitted fabric without the use of chemicals with maintaining good physical quality of dyed fabric. The verdicts of this work provide a new space of utilization of large quantities of natural ingredients which are available in the surrounding environment for textile coloring purpose.

Methodology:

2.1Fabric description Commercially 100% scoured and bleached single jersey knitted fabric (sample size, 7inch × 7 inch) was used in this experiment having areal density of 148 grams per square meter (GSM)and having geometrical properties: course per inch (CPI) = 47, Wales per inch (WPI) = 37, and yarn count 32s . 2.2 Natural dyes Mango seed kernel (Mangiferaindica L.) was used as natural dye source. Green mango collected from local market and mango seed kernel was separated from green mango. Caustic soda was used as an alkali chemical to dyes extraction. 2.3 Natural mordanting agents Following natural mordanting agents were used: 1) Pomagranate peel seeds: This types of natural mordanting agent was collected from local market of Santosh, Tangail. 2) Pomagranate peel bark: This types of natural mordanting agent was collected from local market of Santosh, Tangail. 3) Thujaorientalis: This types of natural mordanting agent was collected from in front of administrative buildings of MBSTU, Santosh, Tangail. 4) Araucaria exelsa: This types of natural mordanting agent was collected from in front of Medical Centre of MBSTU, Santosh, Tangail. 2.4 Soaping agent ISO Standard Soap without optical brightener was used for removing the unfixed dye from dyed sample.

3.1 Mordanting process Samples were treated with different natural sources leaf and bark powder as a mordanting agent in this experiment according to following curve.

3.2 Dye extraction Firstly, the green mango was collected from the local market. Secondly, mango seed kernel was separated from green mango by using knife. Thirdly, the raw seed kernel weighted in an electric balance. 4gm of Caustic soda (NaOH) pellets was dissolved into 800ml water and then added 50g raw mango seed kernel. Fourthly, boiled it at 95°c about 60 minutes and then cooled. Fifthly, it was filtered by a nylon strainer and the solution used as dye solution for preparing dyeing bath. 3.3 Dyeing process The mordanted samples were dyed with natural dye solution of mango seed kernel in IR dyer lab sample dyeing machine (XIAMEN RAPID, CHINA) by exhaust method. Samples were dyed with material to dye solution ratio about 1:22 at 100°c for 60 minutes and cooled at 60°- 70°c. After that samples were washed manually at room temperature and dried. The final washing was done at 70°c for 10 minutes for removing unfixed dye from the fabric surface by a 2% stock solution of ISO standard detergent without optical brightener.

Source of Information: International Journal of Current Engineering and Technology, Vol.10, No.3 (May/June 2020)

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Different types of natural mordants have a significant influence on the properties of cotton fabric dyed with mango seed kernel extracts. They have remarkable impact of color strength of the dyed fabric. Natural mordants can improve color fastness to rubbing and perspiration but the color fastness to wash was not satisfactory. An after-treatment can be carried out for improving fastness properties as a part of further research.

Knowledge Management: Journal