Microscopic and spectroscopic characteristics of cochineal lake pigments focused on tin mordants

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Microscopic and spectroscopic characteristics of cochineal lake pigments focused on tin mordants

Popis výsledku v původním jazyce

At first the the cochineal dyes (Dactylopius coccus) made with textile shearings were used. From 17th century the lakes prepared directly from insects became more common, typical mordants were aluminum salts like potash alum. Salts of tin were used for the first time in 17th century by Dutch inventor Cornelius Drebbel. In 18th century this method spread in Europe and was well known for its brighter scarlet colour. This presentation displays the procedure of creation of lake pigments and summarizes the properties of lake pigments originating from different methods of precipitation of cochineal described by historical sources. The focus is on lakes prepared with different tin based mordants considering their different properties such as manipulability. However, the potash alum as mordant was also employed to compare properties with tin mordants lakes. Microscopic and spectroscopic properties of prepared lakes were determined. The possibilities of differentiation of tin salts mordats lakes by UV-VIS reflectance spectroscopy were explored.

Název v anglickém jazyce

Microscopic and spectroscopic characteristics of cochineal lake pigments focused on tin mordants

Popis výsledku anglicky

At first the the cochineal dyes (Dactylopius coccus) made with textile shearings were used. From 17th century the lakes prepared directly from insects became more common, typical mordants were aluminum salts like potash alum. Salts of tin were used for the first time in 17th century by Dutch inventor Cornelius Drebbel. In 18th century this method spread in Europe and was well known for its brighter scarlet colour. This presentation displays the procedure of creation of lake pigments and summarizes the properties of lake pigments originating from different methods of precipitation of cochineal described by historical sources. The focus is on lakes prepared with different tin based mordants considering their different properties such as manipulability. However, the potash alum as mordant was also employed to compare properties with tin mordants lakes. Microscopic and spectroscopic properties of prepared lakes were determined. The possibilities of differentiation of tin salts mordats lakes by UV-VIS reflectance spectroscopy were explored.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20506 - Coating and films

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů