Wool Yarns Research Articles

Eco-friendly and low-cost phytodyeing for wool, cotton and polyester textile materials using Parthenocissus Quinquefolia L. Fruit Extracts

This study investigates the extraction of natural colorant from fresh fruits of Parthenocissus quinquefolia L. and the application of the extracted dye to wool yarn, cotton, and polyester fabrics in the presence and absence of various mordants. The effect of mordant type on the dyeing quality with different mordanting methods was examined. Iron sulfate, tin chloride, alum, copper sulfate, and potassium dichromate were used as mordant. The effects of these mordants on the color of the dyed samples were investigated in terms of CIELab (L*, a*, b*) and K/S values. The light, washing and rubbing fastness of the dyed samples were evaluated according to ISO standards. While dyeing wool yarn without mordant produces reddish brown, and dyeing with mordant produces a wide range of colors from green to purple, blue and lilac tones are obtained in cotton fabric dyeing, and green, purple and brown tones are obtained in polyester fabric dyeing. While polyester fabrics are dyed with synthetic dyes at 130 oC, in this study they were dyed with natural dyes at 90 oC. As a result of dyeing, colors with high fastness are generally obtained.

The Influence of AB Mix Concentration and Types of Wicks on Brix Value in Cherry Tomatoes (Solanum lycopersicum var. cerasiforme) by Hydroponic Wick System

Hydroponic technologies offer an alternative way to cultivate cherry tomatoes in times when a downfall is seen in productive agricultural land. This research aims to know the correlation between the Brix value of cherry tomatoes and AB mix concentration by a hydroponic wick system. The research method used was an experimental method using a factorial Randomised Block Design. The treatments consisted of K1 = 1900 ppm, K2 = 2700 ppm, K3 = 3500 ppm, S1 = felt, S2 = wool yarn, S3 = stove wick, S4 = cotton rope. Each treatment was repeated thrice. The result showed that the concentration of AB mix solution at 3500 ppm (K3) gave a better result than other concentrations, with an average percentage of Brix valued at 8.71%. At the same time, using felt (S1) as a wick showed the best result with the average percentage of Brix valued at 8.02%. The correlation analysis of AB mix concentration and Brix value resulted in a coefficient of 0.61 which showed a strong correlation between the two variables. This indicates that different levels of concentration of AB mix solution can influence the Brix value of cherry tomatoes. Keywords: hydroponic cherry tomatoes, ab mix concentration, wick system correlation

Environmentally sound recycling of agricultural waste: A sustainable approach to develop bio-functional art textile

The agricultural processing industry produces a large amount of waste on a global scale whose disposal is simultaneously a nuisance and of special interest. The by-products are rich in bioactive phytoconstituents that might be beneficial to the production of bio-functional textiles. The present work uses agricultural wastes for the eco-friendly dyeing of woolen yarns. Response surface methodology based on 23- Central Composite Design was used to design experiments, evaluate the main dyeing parameters, develop efficient mathematical models to predict the dyeing process, and optimize the procedure. The quadratic regression models developed were found to be statistically significant using ANOVA, with R2 -value of 0.9734 and 0.9820 for color strength and lightness responses, respectively. Also, eye-soothing tone and hues with a good resistance to durability (4–5) and light (4) were achieved. The banana shell and gallnut bio-mordants improved UV protection by up to 25.33% and 59.79%, respectively. Generally speaking, the results showed that C. Oblonga leaf as well as gallnut and banana shells could be used as whole crop products in an ecologically sound textile dyeing process through a sustainable approach and that the proposed innovative application might serve as an attractive procedure for recycling and green waste management.

Circularity in Knitting: The Potential of Re-Using Natural Yarns After Unraveling

ABSTRACT Currently, there is an increasing focus on sustainable textile manufacturing in terms of reducing the waste generated during the production and pre-consumer stages. Knitting companies are exploring the promising direction of unraveling and upcycling yarn to achieve this goal. To assess the knittability of unraveled yarn vis-a-vis conventional yarn, a comprehensive indicator of yarn-breaking force changes was proposed. The purpose of this study is to present a method to evaluate the strength property of unraveled yarn and to investigate the potential of 74-tex cotton and 72-tex wool yarn for future upcycling in knitting. The results of the investigation revealed that cotton yarn has a higher potential for upcycling both at pre- and post-consumer stages, compared to wool yarn. The knittability of unraveled cotton yarn is almost 99% after knitting and dry relaxation and over 95% after repeated washing and drying cycles. However, it is pertinent to note that repeated ironing impacts the cotton yarn’s knittability, and hence, it is recommended to label future upcycling products with a special marking prohibiting ironing. The possibility of unraveling and reusing wool yarn is limited to the post-production and pre-consumer stages when its knittability is near 95%.

An Environmentally Sustainable Dyeing Approach for the Production of Ecofriendly Colored Wool Yarns via the Application of Millettia laurentii Natural Dye in Conjunction with Metal Salts and Biomordants

An Environmentally Sustainable Dyeing Approach for the Production of Ecofriendly Colored Wool Yarns via the Application of Millettia laurentii Natural Dye in Conjunction with Metal Salts and Biomordants

Diversifying color palette of Prangos ferulacea colorants on wool yarns: dual mordant approach for enhanced color, antioxidant, and UV protection properties

Natural dyes have gained significant attention in recent years due to their environmentally friendly characteristics. This research paper focuses on the dyeing of wool yarns with P. ferulacea aerial part extract in conjunction with biomordants and metal mordants. The study focused on optimizing dyeing variables including pH of 2–8, temperature of 65 °C–95 °C, dye concentration of 25%–125% o.w.f., and dyeing time of 15–120 min using a one-factor-at-a-time (OFT) optimization by determining the color depth (K/S) values on wool yarns. The optimized dyeing conditions were a pH of 4, a temperature of 95 °C, a dye concentration of 75.0% (o.w.f.), and dyeing time of 60 min. The color hues, brightness, color intensity, and fastness of the samples varied significantly depending on the kind and nature of the biomordant used. Furthermore, the introduction of metal ions as pretreatment to biomordanted wool yarns exhibited unique characteristics such as the creation of new color shades, the combined enhancement of dye absorption (K/S), and increased color fastness with the most colorfast hues produced by Cr, Cu, and Fe-biomordant combinations. The antioxidant potential of biomordanted wool yarns was evaluated in terms of the inhibition of peroxidation by 2,2-diphenyl-1-picrylhydrazyl radical (DPPH) scavenging activity and compared to the un-dyed wool yarns. The two-step mordanting process enhanced the antioxidant activity of dyed wool yarn (up to 99.90%) compared to the unmordanted sample (58.30%) and the negative control sample (5.70%). The ultraviolet protection factor (UPF) values were found in a very good to excellent range, with a rating >40 and maximum protection (UPF = 59.80) provided by Fe-YM mordanting. The findings indicate that this efficient technique enabled us to broaden the spectrum of colors generated by the extract of P. ferulacea aerial parts on wool, while simultaneously guaranteeing outstanding antioxidant and UV protection characteristics.

A study of the effect of organic acids (gallic acid and ascorbic acid) on the coloration and functionalization of wool yarns with Millettia laurentii sawdust natural dye

Wastewater from the textile industry, especially the dyeing sector, is a major contaminant for aquatic ecosystems. Synthetic dye compounds and metal salts from leftover mordant and dyeing baths are washed into rivers, endangering aquatic life and the environment. In regards to the current study’s examination of Millettia laurentii sawdust’s potential as a natural color source, eco-friendly organic acids (gallic acid and ascorbic acid) were studied in conjunction with small amounts of metal salts (aluminum sulfate, stannous chloride, copper sulfate, and ferrous sulfate) for enhancing the color shade palette with simultaneous functionalization (antimicrobial and UV-protection) of wool yarns. The effects of metal salts up to ecologically permissible concentration limits on the dyeing and functional properties were assessed in combination with organic acids. The study focused on optimizing dyeing variables including pH (2–8), temperature (65–95 °C), dye concentration (25–125% o.w.f.), and dyeing time (15–90 min) using a one-factor-at-a-time (OFT) optimization by determining the color depth (K/S) values on the wool yarns. The optimized dyeing conditions were pH of 4, temperature of 95 °C, dye concentration of 75.0% (o.w.f.), and dyeing time of 60 min. The color characteristics (CIEL*a*b*c*ho) and fastness (Wash, rub, and light) properties are evaluated comparatively against control dyed wool yarns using standard methods. The antimicrobial activity of control dyed and mordanted dyed wool yarns was evaluated in terms of the percentage microbial reduction of bacterial colonies. Metal salts especially ferrous sulfate in conjunction with gallic acid (Fe/GA) provided the highest average color strength (13.50) with a maximum percentage microbial reduction of 96.67%. UV protection ability was assessed by an Australian and New Zealand standards (AS/NZS 4399: 1996) method in terms of UPF values. UV protection levels were significantly improved by using binary combinations of organic acids and metal salts with the maximum protection offered by Fe/GA (97.66) and Sn/GA (97.90). Dyeing outcomes were significantly impacted by the chemical structure of organic acids (gallic acid and ascorbic acid) and the type of metal salts; the research proposes a more environmentally friendly natural dyeing process for the textile industry.

Enhancing the Sustainability and Hygiene in the Dyeing of Wool Yarns with Prangos ferulacea Aerial Parts Extract in Conjunction with Metal–Biomordant Combinations

Enhancing the Sustainability and Hygiene in the Dyeing of Wool Yarns with Prangos ferulacea Aerial Parts Extract in Conjunction with Metal–Biomordant Combinations

Dual-Responsive MXene-Functionalized Wool Yarn Artificial Muscles.

Fiber-based artificial muscles are promising for smart textiles capable of sensing, interacting, and adapting to environmental stimuli. However, the application of current artificial muscle-based textiles in wearable and engineering fields has largely remained a constraint due to the limited deformation, restrictive stimulation, and uncomfortable. Here, dual-responsive yarn muscles with high contractile actuation force are fabricated by incorporating a very small fraction (<1wt.%) of Ti3C2Tx MXene/cellulose nanofibers (CNF) composites into self-plied and twisted wool yarns. They can lift and lower a load exceeding 3400 times their own weight when stimulated by moisture and photothermal. Furthermore, the yarn muscles are coiled homochirally or heterochirally to produce spring-like muscles, which generated over 550% elongation or 83% contraction under the photothermal stimulation. The actuation mechanism, involving photothermal/moisture-mechanical energy conversion, is clarified by a combination of experiments and finite element simulations. Specifically, MXene/CNF composites serve as both photothermal and hygroscopic agents to accelerate water evaporation under near-infrared (NIR) light and moisture absorption from ambient air. Due to their low-cost facile fabrication, large scalable dimensions, and robust strength coupled with dual responsiveness, these soft actuators are attractive for intelligent textiles and devices such as self-adaptive textiles, soft robotics, and wearable information encryption.

Broadening Color Shade of Dyed Wool Fibre with Binary and Ternary Natural Plant Dye Combinations

ABSTRACT A limited selection of natural dyes’ color impedes the development of textile dyeing with natural plant dyes. Inspiring by the conventional coloration of textiles with a combination of three synthetic dyes generally, the present work is to investigate the broadening color shade of dyed wool fiber with ternary natural dye combinations of madder red (MR), gardenia yellow (GY), and gardenia blue (GB) without mordants in a decamethylcyclopentasiloxane (D5) medium. The wool yarn was wetted in an aqueous solution of pH 3 to own a 300% pickup rate, followed by immersion in a D5 medium containing 2% of alcohol ethoxylate (AEO-3) and solid natural dyes at 90°C for 90 min for coloration. The colorfastness to washing was achieved at a 4–5 for fading and a 5 rating for staining for all colors. The XRD patterns and TGA analysis confirmed that the dyeing procedure did not affect the crystallinity nature and stable thermal tendency. SEM images and cross-sections showed that the dyeing procedure did not damage the morphological structure of the wool fiber surface, and the dyes were evenly distributed. Finally, many color shades of dyed fibers were prepared with various dyes’ ratios.

Sustainable appraisal of lipstick tree seeds (Bixa orellana)-based bixin natural orange colorant for green mordanted silk fabrics and wool yarns.

This research aims to optimize the silk and wool dyeing process using natural dyes from Bixa orellana (annatto) through response surface methodology. Central composite design experiments highlight the significant enhancement of color outcomes achieved through microwave treatment. For silk, the optimal conditions (80 °C for 40 min) with annatto extract yield a color strength (K/S) of 17.8588, while wool achieves a K/S of 7.5329. Introducing eco-friendly bio-mordants, such as pomegranate peel and red sumac tannins, enhances color strength. Pre-dyeing treatments with 2% red sumac, 1.5% pomegranate peel, and weld flower extracts for silk produce high color strength, with K/S values of 16.4063, 16.3784, and 12.1658, respectively. Post-dyeing, the K/S values increase to 40.1178, 17.4779, and 21.6494. Wool yarn exhibits similar improvements, with pre-dyeing K/S values of 13.1353, 13.5060, and 16.3232, escalating to 10.5892, 15.3141, and 23.4850 post-dyeing. Furthermore, this research underscores improved colorfastness properties, including notable enhancements in light, wash, and rubbing fastness for both silk fabric and wool yarn. These findings underscore the efficacy of the proposed sustainable dyeing methods, offering valuable insights for eco-friendly textile production.

Modern ecofriendly approach for extraction of luteolin natural dye from weld for silk fabric and wool yarn dyeing

The increasing apprehension regarding the ecological effects of synthetic dyes has prompted a transition towards sustainable and environmentally friendly substitutes in the textile sector. This research examines the eco-friendly use of a natural pigment obtained from the weld flower for dyeing of silk fabric and wool yarn. The study investigates the use of microwave-assisted extraction to acquire the luteolin based pigment found in the weld flower. An assessment is conducted to evaluate the effectiveness of microwave radiation in improving the extraction process, emphasizing its capacity to accelerate and enhance the production of the natural colorant. Moreover, the process of optimizing dyeing conditions is carried out utilizing a response surface approach, with a specific focus on parameters including temperature, time, pH, and salt content. The study also investigates the influence of mordants, such as iron salt, and aluminum salt, on improving color fastness and attaining bright and enduring hues. The study expands its research to examine the impacts of plant-based extracts, such as madder root, and oak, as bio-mordants for producing a wide array of colors. The study additionally highlights the favorable influence on color fastness, exhibiting significant enhancements in light fastness, wash fastness, and rubbing fastness for both silk and wool. The measurable results validate the effectiveness of the suggested environmentally friendly dyeing techniques, provide numerical evidence of their suitability for sustainable textile manufacturing.

Introduction of new combination of bio-mordant from agriculture waste for eco-dyeing of wool yarns

Purpose Agricultural waste and food sources are some of the pollutants of the environment. One of these wastes is the peel of fruits that cannot be consumed as food. In this regard, walnut husk (WH) and oleaster peel (PO) are known as two important sources of tannin and are bulky wastes. Because of the high percentage of tannin, these materials can be used as a natural source for the preparation of bio-mordant in the dyeing process. Design/methodology/approach In this study, Reseda and Madder were used as natural dyes in the presence of a mixture of two bio-mordants. WH and PO were selected as bio-mordant. All natural resources are extracted to obtain the juice. The phenolic percentage of tannin-containing extracts was evaluated and then it was used for wool yarns by premordanting method. The results of evaluating the fastness properties using the ISO method. Findings The most important achievement of this research is the use of agricultural waste in the dyeing process to reduce environmental pollution and create added value. All compounds rich in tannin have some phenolic components, therefore the amount of phenolic content of these extracts was evaluated. The effect of mixing the mordant on the color characteristics of the yarns was investigated and the results showed that changing the ratio of the combination of two mordant is effective on the K/S values. The results of evaluating the fastness properties using the ISO method showed that the washing, rubbing and light fastness in the presence of mordant is good, good and moderate, respectively. Originality/value In this paper, to the best of the authors’ knowledge, for the first time, the combination of two natural extracts obtained from agricultural waste has been used to create a new bio-mordant on fibers and improve stability.

Fabric handling evaluation of woven shirting fabrics by the fabric touch tester

A fabric touch tester is a novel instrument with fabric handling properties. Its principal advantage is that the device has integrated modules for compression, surface friction, and thermal and bending properties. This module integration simplifies the testing process, and provides an efficient measurement method, and a comprehensive physical index. This study focused on woven fabrics for dress shirts. The fabric samples comprised three groups with various yarn compositions – that is, cotton, polyester, and wool. Sample group 1 was composed of cotton, polyester, and blended yarns; sample group 2 mainly compared the effect of twist yarns on the fabric touch; and sample group 3 was composed of wool and blended yarns with polyester. The handling properties were assessed by compression work and the compression recovery rate for the compression attributes. The results revealed that fabric (T100p1) with high twist-level yarns had a higher value of compression work (242.56 gf*mm2), and the texture type may affect the compression characteristics more significantly than the blending ratio. The fabric touch tester can also distinguish small changes in the compression properties of samples (0.43–0.71), the maximum heat flux and surface roughness amplitude for the thermal and surface roughness properties. The results revealed that the maximum heat flux value of all the samples in this study was 1109 Wm−2, the sample C100 using pure cotton yarn had the highest maximum heat flux value (1270 Wm−2). Moreover, the sample W100 with 100% wool fiber yarn had the highest surface roughness amplitude in the warp direction (81 μm) and surface roughness amplitude in the weft direction (67 μm). Finally, the bending average rigidity was used to assess the bending performance of the fabric samples. These fabric touch tester indicators were applied to analyze the fabric handling characteristics of woven shirting fabrics, and perform cross-analysis among samples.

Time-Temperature Superposition of the Dissolution of Wool Yarns in the Ionic Liquid 1-Ethyl-3-methylimidazolium Acetate.

The dissolution of wool yarns in the ionic liquid 1-ethyl-3-methyl-imidazolium acetate [C2mim][OAc] has been investigated. Wool yarns were submerged into [C2mim][OAc] and dissolved for various times and temperatures before coagulating with water. Optical microscopy was used to track the yarn's cross-sectional area. We propose that there are two competing dissolution processes, one rate-limited by disulfide bonds at low temperatures (LTs), and a second by hydrogen bonds at high temperatures (HTs), with a crossover point between the two regimes at 70 ℃. The corresponding activation energies were ELT = 127 ± 9 kJ/mol and EHT = 34 ± 1 kJ/mol. The remaining area of the dissolved wool yarn could be shifted via time-temperature superposition to plot a single master curve of area against time for both regions. Finally, the dissolution could be modelled by a diffusion process, giving self-diffusion coefficients for the [C2mim][OAc] ions (0.64-15.31 × 10-13 m2/s).

Environmentally friendly greener approach toward sustainable application of amaltas brown pod-based natural colorant for wool yarn dyeing

The escalating concerns over the environmental impacts of synthetic dyes have catalyzed a shift toward sustainable and eco-friendly alternatives in the textile industry. Within this framework, the purpose of this research article is to investigate the environmentally friendly application of brown pods generated from amaltas ( Cassia fistula) as a natural pigment for the purpose of dyeing wool yarn. The purpose of this study is to investigate the possibility of obtaining the reddish-brown anthraquinone-based pigment that is found in Cassia fistula pods by the application of microwave-assisted extraction process. The efficacy of microwave radiation in enhancing the extraction process is evaluated, highlighting its potential for expediting and improving the yield of the natural colorant. In addition, the response surface methodology is utilized in order to optimize the dyeing conditions. Particular attention is paid to characteristics like as temperature, duration, pH, and salt content. In addition, the study investigates the function of mordants, notably salt of Fe, salt of Al, and tartaric acid, in the process of improving colorfastness and generating shades that are both brilliant and long-lasting. The scope of the work is expanded to include the impacts of plant-based extracts as a biomordants, such as pomegranate, red sumac, and hulela zard, for the purpose of producing a wide variety of colors. Additionally, the impact of microwave treatment on wool yarn dyeability is explored, emphasizing improvements in surface morphology and dye absorption. The yarn analysis encompasses color strength, shade variation, and surface morphology, employing techniques such as Fourier transform infrared spectroscopy (FTIR) to elucidate chemical interactions. The study’s findings contribute to the growing body of knowledge on sustainable dyeing practices, highlighting the viability of amaltas-based natural pigments and environmentally friendly mordants in textile applications. Ultimately, this research underscores the significance of adopting ecologically conscious dyeing methods and paves the way for a more sustainable approach to coloration in the textile industry.

Infrared (IR) imaging based comfort appraisal of wool, acrylic, and Thermolite® plaited gloves; Exploring socio-economic materials

Plaited jersey fabrics are always engineered to enhance the thermal conductivity characteristics, providing thermal equilibrium among the wearer and clothing during hot weather. These can also be architected with higher thermal resistance/heat insulation characteristics and is a crucial area of interest; however there isn’t any significant literature reporting this. The study focuses on developing plaited jersey gloves using Thermolite®, acrylic, and wool yarns in alternative main and plaiting configurations for winterwear. Thermal characterizations were conducted to ascertain heat and mass transfer properties, such as fluid transmission and thermal resistance. Infrared (IR) imaging visualized heat retention in terms of temperature gradients. Mechanical characteristics, such as pilling and bursting, were assessed to determine the gloves durability to physical abrasions and stresses. Thermolite® knitted gloves possessed superior heat and mass transfer properties with improved fluid transmission and thermal resistance. Infrared imaging revealed highest body temperature rise of 34.43oC for Thermolite® , and mechanical properties were also found adequate. Fluid transfer (air permeability) was acquired highest for wool samples (1770 mm/sec); however, Thermolite® exhibited 28% lower air permeability than wool, validating its heat retention. Thermolite® knits with the lowest areal density of 226 g/m2 and the smoothest Thermolite® surface had the highest OMMC (overall moisture management capacity) index of 0.46 due to generated capillaries. The statistical analysis of the characterization data indicated the significance ( p-value &lt;0.05) of the main and plating yarns, proving the plaiting a solution to achieve desired heat and mass transfer characteristics.

Keratin protein nanofibers from merino wool yarn: a top-down approach for the disintegration of hierarchical wool architecture to extract α-keratin protein nanofibers.

We report the extraction of keratin nanofibers from the medulla of a parent yarn after denaturing the cuticle and cortex microstructures of a merino wool yarn. Controlled alkaline hydrolysis, followed by high-speed blending in acetic acid, allowed for the extraction of keratin protein nanofibers with an average diameter of 25 nm and a length of less than 3 μm. SEM and AFM analyses showed the removal of cuticle cells from the yarn. FT-IR and DSC analyses confirmed the hydrolysis and denaturation of the sheet protein matrix of cuticle cells. XPS analysis provided strong evidence for the gradual removal of the epicuticle, cuticle cells, and cortex of the hierarchical wool structure with an increase in alkaline hydrolysis conditions. It was confirmed that the merino wool yarn subjected to hydrolysis under alkaline conditions exposed its internal fibrillar surface. In an acetic acid medium, these fibrillar surfaces obtained a surface charge, which further supported the defibrillation of the structure into its individual nanofibrils during high-speed blending. The extracted nanostructures constitute mainly α-helical proteins. The morphology of the nanofibers is composed of a uniform circular cross-section based on the images obtained using AFM, TEM, and SEM. The extracted nanofibers were successfully fabricated into transparent sheets that can be used in several applications.

Study on the strength of needle-punched nonwoven material made on the basis of sole trader "Miras"

Coarse sheep wool and wastes from the production of woolen yarns are currently considered to be a special waste that requires large disposal costs due to low market demand. For this reason, wool has serious consequences for the environment. However, this type of raw material is considered a promising insulating natural fiber due to its thermal and acoustic properties. Moreover, wool meets the requirements of environmentally friendly materials that are used for yurts, insulation of buildings, and acoustic insulation for the automotive industry. Nevertheless, the sustainability and energy efficiency of insulation materials are currently evaluated comprehensively. In this context, the correctness of the composition of nonwoven fabric, its thickness and strength characteristics, as well as the number of layers play an important role. The purpose of this work is to study the relationship between strength characteristics and thickness, as well as the number of layers in nonwovens made of 100 % wool mixed with coarse and fine fibers, and to determine the most optimal variant of insulating nonwovens. 4 samples of one, two, three and four-layered materials were used in the study. The tested samples of insulating materials were evaluated according to the parameters of breaking load, strength and elongation. The results of the research showed that with an increase in the number of layers of material, there is an increase in the tested two indicators: breaking load and strength. The elongation rates were uneven. Consequently, by examining all three parameters, it was found that the best option is a three-layered nonwoven material.

Coupling of Dye Analysis and Compound Specific Radiocarbon (14C) Analysis (CSRA) in Heritage Sciences

Natural organic dyes and pigments have been used for millennia to bring colour into our daily lives. Being sourced from a variety of natural sources, they form an extremely varied and large class of compounds, all of which retain the atmospheric 14CO2 of their year of growth. As such these compounds represent ideal candidates for radiocarbon (14C) dating, allowing the identification of or providing information towards the period in which the coloured artefact was created. However, up to now no such analysis has ever been conducted solely on organic colourants within an object. The complex nature of the samples and the sample size limitations with respect to precious and rare art artefacts requires innovative inter- and multidisciplinary approaches. Here we discuss preliminary results in the development of a compound-specific radiocarbon analysis (CSRA) methodology for the analysis of anthraquinone derived red dyes extracted from dyed wool yarns. The aim of this research project is to introduce new routes to date cultural heritage objects, in particular to overcome their intrinsic complexity through the development of CSRA strategies.