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Dyeing of wool and silk with Hinjal bark, Jujube bark and Himalayan rhubarb

机译：欣加尔树皮，枣树皮和喜马拉雅大黄对羊毛和丝绸的染色

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摘要

From the limited investigations and study a brief idea about optimized dyeing pH, effect of different mordants on colour value and fastness properties of Jujube bark, Hinjal bark and Himalayan rhubarb dyed on silk and wool fabric was obtained. Since this work is purely on academic interest, so the pollutions load of some of the metals have not been considered. However, a more detail study can be conducted to check the dyeing behavior, toxicity and other parameters of dyed substrates. Based on the experiments conducted following conclusions can be drawn: 1. Depth of shade for both wool and silk fabric dyed with Jujube bark, Hinjal bark and Himalayan rhubarb in absence of mordant follows a commonly increasing trend with lowering of dye bath pH. 2. It is always recommended to dye both silk and wool with Jujube bark, Hinjal bark and Himalayan rhubarb at pH 4 to 5. 3. Dye uptake appears to be higher in case of wool than that observed in case of silk. 4. There is no significant change in wash fastness properties of dyed wool and silk fabrics in absence and presence of mordant expect some few cases. 5. Light fastness property of wool and silk fabric dyed with Hinjal bark and Himalayan rhubarb in absence of mordant is comparatively higher than that of Jujube bark. Hinjal bark on silk in presence of zinc sulphate and tannic acid improves light fastness rating maximum up to 1.5 point, whereas wool fabric dyed with Hinjal bark in presence of ferrous, zinc, calcium and copper sulphate and tannic acid improves the light fastness rating maximum up to 2. Wool fabric dyed with Himalayan rhubarb in presence of all the mordants expects magnesium sulphate improves light fastness property.
机译：通过有限的调查和研究，获得了关于优化染色pH值的简要思路，获得了不同媒染剂对在真丝和羊毛织物上染色的枣树皮，兴贾尔树皮和喜马拉雅大黄的色度和色牢度性能的影响。由于这项工作纯粹是出于学术目的，因此尚未考虑某些金属的污染负荷。但是，可以进行更详细的研究来检查染色行为，毒性和被染底物的其他参数。根据进行的实验，可以得出以下结论：1.在没有媒染剂的情况下，用枣树皮，Hinjal树皮和喜马拉雅大黄染色的羊毛和丝绸织物的色泽深度通常随着染色浴pH值的降低而增加。 2.始终建议使用pH为4至5的枣树皮，辛贾尔树皮和喜马拉雅大黄对丝绸和羊毛进行染色。3.羊毛情况下的染料吸收量似乎比丝绸情况下的高。 4.在不存在或存在媒染的情况下，染色羊毛和丝绸织物的耐洗牢度性能没有显着变化，预计在少数情况下。 5，在没有媒染剂的情况下，用欣加尔树皮和喜马拉雅大黄染色的羊毛和丝织物的耐光性比枣树皮高。丝绸上的欣加尔树皮在存在硫酸锌和单宁酸的情况下，其耐光性等级最高可提高至1.5点，而辛加尔树皮染色的羊毛织物在存在亚铁，锌，钙和铜的硫酸盐和鞣酸的情况下，其耐光性等级可提高至最高至2.在所有媒染剂的存在下，用喜马拉雅大黄染色的羊毛织物期望硫酸镁改善耐光性。

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