An efficient ultrasonic and microwave assisted extraction of organic Henna dye for dyeing of synthetic polyester fabric for superior color strength properties

Abstract

Extracție eficientă cu ultrasunete și microunde a colorantului organic Henna pentru vopsirea materialelor textile sintetice din poliester cu proprietăți superioare de rezistență a culorii Tehnică de extracție eficientă din punct de vedere energetic și ecologică pentru extracția colorantului organic Henna a fost propusă pentru vopsirea materialelor textile sintetice din poliester, cu proprietăți de rezistență ridicată a culorii, pentru a satisface cererea mondială de procese și produse eficiente din punct de vedere energetic și ecologice, în comparație cu metodele convenționale de extracție cu solvent. Metodele de extracție cu ultrasunete și microunde au fost ulterior analizate și optimizate, în ceea ce privește timpul de extracție și raportul de flotă. Pentru aobserva efectul pH-ului asupra vopsirii naturale a poliesterului cu colorant Henna, vopsirea a fost efectuată la două valoridiferite ale pH-ului. Tehnicile cu ultrasunete și cu microunde au extras semnificativ colorantul Henna, într-un timp mai scurt decât metoda convențională de extracție cu solvent. Rezistențe mai mari ale culorii au fost înregistrate prin extracția cu ultrasunete și microunde a colorantului Henna la vopsirea materialelor textile din poliester. Cuvinte-cheie: colorant natural Henna, extracție cu microunde, vopsire organică, material textil din poliester, extracție cu ultrasunete An efficient ultrasonic and microwave assisted extraction of organic Henna dye for dyeing of synthetic polyester fabric for superior color strength properties An energy efficient and 'green' extraction technique for extraction of organic Henna dye has been proposed for the dyeing of synthetic polyester fabric with high fastness and color strength propertiesto fulfill the world's highest demand towards energy efficient and 'green' processes and products and compared with conventional solvent extraction methods. The ultrasonic and microwave extraction methods were further analyzed and optimized in terms of extraction time and liquor ratio.To observe the effect of pH on the natural dyeing of polyester with Henna dye, dyeing were carried out at two different pH. Ultrasonic and microwave techniques noticeably extracted Henna dye with in less time than conventional solvent extraction method. High color strength and fastness properties were observed with ultrasonic and microwave extracted Henna dyeing of polyester fabrics.

A Review of Advances on Natural Dye Sensitized Solar Cells (NDSSCs)

“…This result corresponds to the highest value of conversion efficiency recorded for red cabbage photosensitizer [34]. Extraction of dyes from Mangosteen peels by first milling and drying them for 3 -5 days before soaking in ethanol with stirring for 12 hours at room temperature, the absorption spectra of dye solutions were characterized by using UV-Vis spectrophotometer, anthocyanin of mangosteen peels was 400 -480 nm with power conversion efficiency of 0.042 % [31]. Kartini and Hatmanto extracted dyes from bark of tingi, tegeran and dried fruits of jalawe using aqueous and solvent extraction methods, they observed absorption peaks at 540 nm, 538 nm and 403 nm respectively [35].…”

“…Microwave increases the rate of the processes so the extraction can be completed in a shorter time with better yield. Rabia, et al, extracted henna dye by ultrasonic and microwave assisted extraction method and observed that the method yielded more superior colour strength properties compared to other extraction techniques they had used [31].…”

“…Mangosteen extract with solvent and solvent/acid extraction method resulted in 1.17% and 0.31% respectively. It should be noted that acid-acylated betacyanins are rapidly deacylated leading to degradation of betanin and destruction of complex pigments [31]. The solvent extraction method is the best for extracting natural dye pigments from tuber plants as can be seen from Table 4.…”

Sustainable natural dyeing of cellulose with agricultural medicinal plant waste, new shades development with nontoxic sustainable elements

“…Using the reflectance value at maximum absorption, the color yield (K/S) was calculated with the Kubelka-Munk equation Eq. 1 [27] K/S = (1-Rλmax) 2 (1)…”

Pomegranate fallen leaves as a source of natural dye for mordant‐free dyeing of wool

“…[5][6][7][8] Several approaches have been studied to improve the sorption of natural dyes by textile fibres without the use of metal mordants. Application of plasma, 9,10 bio-mordants, 11,12 chitosan, 13 cationising agents, 14 ultrasound 15,16 and microwave 17,18 are among the most studied methods for elimination of metal mordants from natural dyeing processes. Silk sericin is another eco-friendly material which has the potential to improve the dyeability and functional properties of wool considerably.…”