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• Author: Dr Padma S Vankar
• Publisher: National Institute of Industrial Research
• Publish Date: 2007
• ISBN: 8189579010
• Pages: 472

This is a single book with Color Photographs which has information related to extraction of dyestuffs from 19 common flowers, weeds, bark or leaves and its application on cotton silk and wool fabrics for textile industry.

The book describes the step wise methodology of extraction, mordanting and dyeing with photos of the actual plants part used for extraction of Natural dye. Shade cards have been incorporated so that the full gamut of colors can be visualized from each dyestuff.

The Author Dr Padma S Vankar, works as Principal Research Scientist, in Facility for Ecological and Analytical Testing (FEAT) at Indian Institute of Technology, Kanpur. She has been engaged in the screening and characterization of newer natural dyes for the past 10 years. She also works in the area of designing synthetic strategies for Eco friendly dyes using microwave heating system. Using innovative technology for natural dyeing has been her main emphasis. The author has conducted several workshops throughout India in order to popularize natural dyeing.

Preface

This book is an output of the research on Newer Sources of Natural dyes for Industrial application through the funding received from Ministry of Textiles (MOT) in the year 1999-2000, Department of Science and Technology (DST) for 2003-2006 and from Khadi and Village Industries (KVIC), 2003-2006. Newer plants have been screened, collected, tested them for the type of the color derived from shoot, leaves, bark, flowers or fruits. Isolation of colorants, their spectral analyses and structure elucidation has been one major aspect of the study.

The dye –yielding plants have been listed by their local names and botanical names- giving details of species and genus. Plants have been identified on the basis of their high dye content so that they are economically viable for industrial purpose. With the availability of standardized procedure for utilizing locally available plants/tree products to extract dyes this would help in promoting better and perhaps cheaper use of natural dyes. More than 50 plants were screened from which 25 dye- yielding plants have been enlisted for use as they have yielded consistent results having acceptable fastness properties. The dye extract and dyed fabrics have also been tested for ecofriendliness mainly analyzing heavy metals, residual pesticides, banned amines and formaldehyde.

They have been found to be safe.

Dye-ability with these newer sources has been the other aspect of the study. The standardization process for 25 dyes has been documented. This includes method of extraction, application of newer natural dyes in textile dyeing, mordanting methodology, fastness properties and ecofriendliness of these natural dyes have been evaluated and documented. Color measurements –L,a,b values have been assessed. Shade cards have been developed for each dye plant to show the range of colors. Main emphasis has been on usage of forest bio-waste- such as teak leaves, eucalyptus bark and flowering plants.

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