Risk of climate-induced damage in historic textiles

Journal of Analytical Sciences, Methods and Instrumentation, 2012

With the aim that to confirm the need for humidity control in the environment in which textile sample are visually and instrumentally analyzed, three different pre-conditioned fabrics sample of cotton, polyester and silk were treated at a fix temperature of 21˚C. The relative humidity adjusted to four levels: 55%, 65%, 75% and 85% RH for a conditioning time of 24 hours as specified in ASTM D-1776-98. It has been observed that as the relative humidity increase from 55% to 85% cotton increase its tensile strength, silk losses its strength and there was no significant change observed in the tensile strength of polyester fabric.

Proceedings of the 8th International Conference on Advanced Materials and Systems, 2020

Generally, the most common damaging factors for linen textile materials are the environmental conditions, their handling, and natural decay. Such environmental factors are ultraviolet (UV) radiation, humidity, and high temperature. Therefore, to investigate the effects these factors may cause, an accelerated weathering test was conducted on linen fabrics, using alternating cycles of UV exposure and humidity, along with relatively high temperatures. The effects of this test were investigated using non-destructive and micro-destructive analysis techniques. Scanning Electron Microscopy (SEM) was used to observe any modifications appearing at the surface of the fibers. Energy Dispersive X-Ray Analysis (EDS) was employed in conjunction with SEM for obtaining the spectrum of the chemical elements that were present at the surface of the linen samples. The modifications of functional groups occurring due to the weathering of linen were assessed by Fourier-Transform Infrared Spectroscopy (FT...

The comfort is undoubtedly the most important human attribute depends upon the moisture transport which in turn depends on the moisture transport behavior of the knitted fabric. Moisture transport is the transfer of liquid water capillary interstices of the yarns and depends on the wettability of fiber surfaces, as well as the structure of the yarn and fabric. Because of its good water absorption property, cotton is often used for next-to-skin wear such as t-shirts, underwear, socks. All these are known as``as``moisture management`` which means the ability of a textile fabric to transport moisture away from the skin to the garment's outer surface in multi-dimensions and it is one of the key performance criteria in today's apparel industry since it has a significant effect on the human perception of moisture sensations. In order to study, plated knitted fabric for socks were knitted as plated single jersey in the same production conditions, from different types of yarns, prod...

1997

and Sons, New York, 1963). Yet von Bergen's article' on hygral expansion in TRJ provides both amusement and insight into the behavior of worsted fabrics when the relative humidity changes. Illustrated is a beautifully finished man's suit jacket (20% RH) and the same jacket, rumpled and puckered, when it was subjected to high 90% relative humidity (Figures la and lb). One can imagine the dismay of a senior scientist and textile technologist emerging from a first class Pullman railroad car for a winter Florida vacation with such disheveled attire. Dr. von Bergen's work on this topic, together with those of his colleagues and, more recently, his successors in the textile field, is actually quite worthwhile-and cogent reading for textile and costume conservators today. The effects of set and dimensional stability not only answer questions pertaining to relative humidity for worsted garments and textiles, but they also begin to answer three important questions for conservators: 1) what is the effect of heated deionized wash water on wool? 2) can you reset the dimensions on a tapestry or carpet that has been stretched out of shape (creep)? 3) will the new "wet" dry-cleaning techniques damage antique textiles? This paper will review the properties described in the literature as set and especially the hygral expansion of wool. It will discuss the implications of these properties for the appearance of costume and textiles in museum collections. A glossary is provided as an aid to readers; a bibliography is included for further reading.

In recent years conservators have begun to recognise that preventive conservation is as important as active conservation. Conservation treatments may play a role in accelerating the deterioration of museum artefacts in the long term. Accelerated tests were designed to find conservation materials, which would be safe for long-term use and would not cause degradation of museum artefacts. This study concerns the long-term effect of different conservation materials on the properties of linen textiles. Linen textile samples were treated with 5 different types of polymers, 4 different types of fungicides and 4 different types of deacidifying agents to evaluate the long-term effect of these materials on the physical and chemical properties of linen textiles. Three different types of accelerated ageing methods, heat, light and soil were used in this evaluation. The change of the physical and chemical properties of the untreated and treated linen textiles after ageing was assessed by different methods. The results showed that both treated and untreated linen textiles became progressively darker and showed progressive losses in tensile strength after ageing by different methods. X-ray results show that the ageing of the linen samples slightly decreased crystallite size in the longitudinal dimensions, also decreasing the total crystallinity compared to unaged samples. Results obtained by IR show changes in chemical properties of treated and untreated linen textiles after ageing by different methods. The results of this study will assist a conservator who seeks information about changes in the properties of linen textiles which may occur in the long term when they are treated with common conservation treatments.

In recent years conservators have begun to recognise that preventive conservation is as important as active conservation. Conservation treatments may play a role in accelerating the deterioration of museum artefacts in the long term. Accelerated tests were designed to find conservation materials, which would be safe for long-term use and would not cause degradation of museum artefacts. This study concerns the long-term effect of different conservation materials on the properties of linen textiles. Linen textile samples were treated with 5 different types of polymers, 4 different types of fungicides and 4 different types of deacidifying agents to evaluate the long-term effect of these materials on the physical and chemical properties of linen textiles. Three different types of accelerated ageing methods, heat, light and soil were used in this evaluation. The change of the physical and chemical properties of the untreated and treated linen textiles after ageing was assessed by different methods. The results showed that both treated and untreated linen textiles became progressively darker and showed progressive losses in tensile strength after ageing by different methods. X-ray results show that the ageing of the linen samples slightly decreased crystallite size in the longitudinal dimensions, also decreasing the total crystallinity compared to unaged samples. Results obtained by IR show changes in chemical properties of treated and untreated linen textiles after ageing by different methods. The results of this study will assist a conservator who seeks information about changes in the properties of linen textiles which may occur in the long term when they are treated with common conservation treatments.

IJERASET, 2021

Degeneration of fabrics with age is an accepted phenomenon. Limited data is available about impact of fiber characteristics on ageing of fabrics in museum settings. Museum professionals have relied on their personal experience and case studies while taking decisions about sensitive textiles. However, lack of established data can become a major hurdle in technological advancements in field of conservation science. Quantification of change in strength and performance parameters of a fabric with time and verified data about difference in the level of impact between fabrics made of different fibers can provide new perspectives to conservation and exhibition research approach. In present research, impact of ageing on strength and performance parameters of fabrics made of cotton, wool and silk has been analyzed since most museum collections primarily consist of these three natural fibers. Each fabric has been individually examined for select strength and performance parameters before and after accelerated ageing. Standardized testing procedures have been followed for ageing simulation, and testing of tensile strength, GSM (gram per square meter), abrasion resistance, flexural rigidity, and color change in fabrics. Results generated by this comparative assessment provide insights about difference in degree of vulnerability to ageing and its implications on museum procedures. The numeric data obtained can be construed and utilized in innumerable ways for devising technologically advanced equipment and procedures assisting in suitable cleaning, storage, exhibition and conservation strategies for museum fabrics.

2011

Different historic textiles were subject to aqueous treatments with and without sodium borohydride as a reducing agent. As the action of borohydride generates an alkaline environment that is potentially harmful for oxidized cellulose in historic textiles, two less alkaline treatment options using buffer systems were additionally tested.

Textile Research Journal, 2013

The objective of this study was to explore a number of technical–technological parameters affecting the water vapor resistance of knitted fabric and clothing, as well as to develop a predictive model that describes the prominent affecting parameters. Thirty-four knitted fabrics were carefully produced and measured on a sweating guarded hotplate and thermal manikin. The study focused on the influence of the following parameters on the transfer of water vapor: type of textile fibers, yarn and knitted fabric parameters, finishing of fabrics (recipes include bleaching, dyeing, and softening), and body activity. The statistical analysis, performed to examine the relationship between observed parameters, indicated medium correlation between water vapor resistance and moisture regain (R = 0.7). Furthermore, the relationship between water vapor resistance and the following knitted fabric parameters is especially prominent: mass per unit area, knitted fabric thickness, and tightness factor (...