O conforto é um aspecto muito importante ao se tratar de vestuário, por isso cada vez mais estão sendo desenvolvidos tecidos com características específicas para proporcionar conforto nas mais diversas situações de uso. Dentro desse contexto, o conforto térmico fisiológico tem papel fundamental e um dos seus pontos chave é a capacidade dos têxteis de gerenciar a umidade proporcionada pelo processo de suor do corpo. O equipamento Moisture Management Tester (MMT) foi desenvolvido para possibilitar uma avaliação prática e confiável dessa propriedade dos tecidos e permite calcular um índice que reflete a capacidade global de gestão de umidade (OMMC) das amostras analisadas. O objetivo desse trabalho é realizar uma avaliação dos resultados obtidos no equipamento MMT em tecidos de malha fabricados com diversos tipos de fios e de contexturas e comparar os resultados com outros métodos de medida de gerenciamento de umidade, para verificar a eficácia do equipamento em quantificar a diferença de comportamento entre os tecidos analisados. Através da análise estatística concluiu-se que a metodologia utilizada no MMT possui uma divisão mais equilibrada da influência dos fatores para os resultados encontrados, sendo mais fiel ao que acontece com o tecido na pratica, com resultados mais representativos, pois todos os fatores que interferem nos resultados são consideração de maneira equilibrada / Comfort is a very important aspect related to garments, that is why fabrics containing specific characteristics to provide comfort in all kinds of situations are being developed. Within this context, the physiological thermal comfort plays a crucial role and one of his key points is the ability of textile to manage moisture provided by the body sweat process. The Moisture Management Tester (MMT) methodology was developed to enable a practical and reliable evaluation of this property of fabrics and allows the calculation of an index that reflects the overall moisture management capacity (OMMC) of the samples. The objective of this was to provide an evaluation of the results obtained on MMT on different types of yarn and knits compared to other moisture management methods of measurement, and intending to verify the effectiveness of the equipment to quantify the difference in behavior among the analyzed fabrics. Through statistical analysis, it was concluded that the methodology used in MMT has a more balanced division of the factors influence in founded results, seen as more faithful to what happens to fabric in practice, with more representative results because all factors that interfere in the results are considered in a balanced way

O conforto é um aspecto muito importante ao se tratar de vestuário, por isso cada vez mais estão sendo desenvolvidos tecidos com características específicas para proporcionar conforto nas mais diversas situações de uso. Dentro desse contexto, o conforto térmico fisiológico tem papel fundamental e um dos seus pontos chave é a capacidade dos têxteis de gerenciar a umidade proporcionada pelo processo de suor do corpo. O equipamento Moisture Management Tester (MMT) foi desenvolvido para possibilitar uma avaliação prática e confiável dessa propriedade dos tecidos e permite calcular um índice que reflete a capacidade global de gestão de umidade (OMMC) das amostras analisadas. O objetivo desse trabalho é realizar uma avaliação dos resultados obtidos no equipamento MMT em tecidos de malha fabricados com diversos tipos de fios e de contexturas e comparar os resultados com outros métodos de medida de gerenciamento de umidade, para verificar a eficácia do equipamento em quantificar a diferença de comportamento entre os tecidos analisados. Através da análise estatística concluiu-se que a metodologia utilizada no MMT possui uma divisão mais equilibrada da influência dos fatores para os resultados encontrados, sendo mais fiel ao que acontece com o tecido na pratica, com resultados mais representativos, pois todos os fatores que interferem nos resultados são consideração de maneira equilibrada / Comfort is a very important aspect related to garments, that is why fabrics containing specific characteristics to provide comfort in all kinds of situations are being developed. Within this context, the physiological thermal comfort plays a crucial role and one of his key points is the ability of textile to manage moisture provided by the body sweat process. The Moisture Management Tester (MMT) methodology was developed to enable a practical and reliable evaluation of this property of fabrics and allows the calculation of an index that reflects the overall moisture management capacity (OMMC) of the samples. The objective of this was to provide an evaluation of the results obtained on MMT on different types of yarn and knits compared to other moisture management methods of measurement, and intending to verify the effectiveness of the equipment to quantify the difference in behavior among the analyzed fabrics. Through statistical analysis, it was concluded that the methodology used in MMT has a more balanced division of the factors influence in founded results, seen as more faithful to what happens to fabric in practice, with more representative results because all factors that interfere in the results are considered in a balanced way

The purpose of this research was to evaluate performance claims in athleisure, in order to confirm or refute their authenticity. Aesthetic properties and functional claims were evaluated initially, and after repeated home laundering. A convenience (nonprobability) sample of activewear with performance features consisted of ninety garments that are currently on the market and commonly used by consumers. The garments included men’s and women’s t-shirts, polos, leggings, windbreakers, hoodies, sweatpants, and warm-up pants of various fiber contents and performance chemistries. The focus of the garment selection was on garments with performance properties relating to moisture management. Performance claims listed on the hang tags included moisture management, wicking, quick dry, stay cool, breathable, water resistant and wind resistant. Garments in the sample were a combination of natural, synthetic and blended fiber contents. The garments were tested initially, after one, five, ten, fifteen and twenty laundry cycles. The garments were evaluated for smoothness, dimensional stability, color change, pilling, horizontal wicking of textiles, water repellency- spray test, water resistance- impact penetration, water resistance- hydrostatic pressure, absorbency of textiles, aqueous liquid repellency and air permeability. All testing was performed in accordance with AATCC and ASTM standard test methods and was conducted under controlled laboratory settings.

The medical field has been a part of the smart textile area for quite some time. With time come technological advancement and the two fields converge on more and more areas. One such area is that of using textile electrodes, textrodes, for measuring bioelectrical activity, such as heart rate for ECG analysis. There are many components that make for a successful textile electrode and though many studies have been made in the subject there are several aspects that still are difficult. By using textile electrodes the problem with skin irritation from electrolyte gels, commonly used for conventional electrodes, is avoided, however dry textrodes create disturbances in the output signal (heart rate) while subjected to movement and internal dimensional changes. The addition of moisture to a textrode has shown to decrease these intermittent disturbances but the knowledge about fundamental textile structural influence in the matter has not been fully investigated. This study investigates a flat, a 2-thread fleece and an open structure, and their relation to moisture both as textile structures and as textrodes. This way the possibilities of utilising moisture to increase performance in a textrode purpose can be examined and to what extent the textile structure plays a part in that exploitation. The material composition of textile structures also affects their properties The introduction of assistive materials, polyester and viscose, into the Shieldex (conductive yarn) structures is done to test core moisture management properties such as surface tension, absorption and moisture content, and correlate them to electrical properties necessary for textrode function. In the end the gap between textile structure and end product in form of a textrode is closed as the impedance and microclimate of the textrodes are studied. This is mainly to tie together the fundamental textile structures with a complex textile construction. In conclusion the complexity is also confirmed as structural, materialistic and external influences has an impact on the results. The influence of moisture on lowered resistance and impedance in the structures is confirmed but the impact of textile structure can also be seen. The 2-thread fleece and open structures often has a more positive impact on results and therefore has the possibility of enhancing performance of a textrode for bioelectrical signal monitoring. With these results a more effective way of producing long-lasting, patient-friendly, textrodes can be derived and in the future lead to better care in the medical areas.

Yes / Soft silicone's flexibility, adhesive capacity and non-toxic, non-odourous and hypoallergenic nature have made it an established material for adhesive and protective therapeutic devices. In wound care, silicone is a component of contact layer dressings for superficial wounds and silicone gel sheeting for reducing the risk of scarring, as well as of barriers for incontinence-associated dermatitis. Regarding stoma accessories, silicone is established in barrier films to prevent contact dermatitis, adhesive removers to prevent skin stripping and filler gels to prevent appliance leaks. Until recently, silicone has not been used in stoma appliances flanges, as its hydrophobic nature has not allowed for moisture management to permit trans-epidermal water loss and prevent maceration. Traditional hydrocolloid appliances manage moisture by absorbing water, but this can lead to saturation and moisture-associated skin damage (MASD), as well as increased adhesion and resultant skin tears on removal, known as medical adhesive-related skin injury (MARSI). However, novel silicone compounds have been developed with a distinct evaporation-based mechanism of moisture management. This uses colloidal separation to allow the passage of water vapour at a rate equivalent to normal trans-epidermal water loss. It has been shown to minimise MASD, increase wear time and permit atraumatic removal without the use of adhesive solvents. Trio Healthcare has introduced this technology with a range of silicone-based flange extenders and is working with the University of Bradford Centre for Skin Sciences on prototype silicone-based stoma appliance flanges designed to significantly reduce the incidence of peristomal skin complications, such as MARSI and MASD. It is hoped that this will also increase appliance wear time, reduce costs and improve patient quality of life.

Thermal resistance per unit thickness for Vacuum Insulation Panel (VIP) is 5 to 10 times higher than conventional insulation materials. This makes VIP an attractive option for retrofitting exterior building envelopes. Insulation can be added in an exterior wall either on the interior side, exterior side or in the available stud cavity. VIP has high vapor diffusion resistance factor and could lead to moisture management risk in the wall layers because of the steep temperature gradient in the wall generated due to very high thermal resistance of VIP. VIP is a relatively new insulation material for building envelope construction, thus the hygrothermal or moisture management performance of VIP-insulated exterior building envelopes need to be critically analyzed before its application. This study aims to evaluate the moisture management risk associated with wood-frame stucco-cladded exterior walls retrofitted with VIP using a 2-D hygrothermal simulation tool WUFI-2D. Eight North American locations were considered, based on Moisture Index (MI) which varied between 0.13 and 1.17, and two different indoor hygrothermal loading conditions as prescribed by the ASHRAE 160P and EN 13788, respectively. The outputs from hygrothermal simulations (water content, relative humidity and temperature) were critically analysed and expressed further using freeze-thaw cycles and RHT indices. The results show that the appropriately designed VIP retrofitted walls can have superior moisture management performance as compared to conventional stucco-cladded wall. / Graduate

Both transportation costs and market values of woody biomass are strongly linked to the amount of moisture in the woody biomass. Therefore, managing moisture in the woody biomass well can lead to significant advantages in the woody biomass energy business. In this study, two prediction models were developed to estimate moisture content for Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) and hybrid poplar (Populus spp.) woody biomass. Experimental data for the Douglas-fir model were collected over four different seasons at two different in-forest study sites in Oregon (Corvallis and Butte Falls) between December 2010 and December 2011. Three woody biomass bundles consisting of 3-meter length logs (30 to 385 mm diameter) were built each season at each study site; a total of 24 Douglas-fir bundles (1,316 to 3,621 kg weight) were built over the period. Experimental data for the hybrid poplar model were collected in two drying trials at two off-forest study sites in Oregon (Clatskanie and Boardman) between April 2011 and January 2012. Two types of woody bundles consisting of 3-meter length logs were built each trial: small (28 to 128 mm diameter, 2,268 to 5,389 kg weight) and large (75 to 230 mm diameter, 3,901 to 7,013 kg weight). A total of eight hybrid poplar bundles were built over the period. These data were used to develop linear mixed effects multiple regression models for predicting the moisture content of Douglas-fir and hybrid poplar biomass, respectively. The major factors considered in this study for predicting woody biomass moisture content change were cumulative precipitation, evapotranspiration (ET₀), and biomass piece size. The Food and Agriculture Organization (FAO) Penman-Monteith method, which requires temperature, solar radiation, wind, and relative humidity data, was used to calculate ET₀. The developed models can be easily applied to any location where historic weather data are available to calculate estimated air-drying times for Douglas-fir and hybrid poplar biomass at any time of the year. Oregon has been split into nine climate zones. Use of the model was demonstrated for four climate zones, two in which air-drying data were collected, and two in which it was not collected. Considerable differences in predicted drying times were observed between the four climate zones. / Graduation date: 2013

Woody biomass transportation costs and market values/costs are strongly correlated with the woody biomass moisture content. Properly managing moisture content can potentially lead to economic and environmental advantages in biomass energy markets. Good management requires accurate moisture content measurements. Therefore, availability of accurate, precise, reliable, and efficient tools to assess woody biomass moisture content is essential. In this study, six different tools (Fibre-Gen HM200, IML Hammer, Humimeter BLW, Timbermaster, Humimeter HM1 and Wile Bio Meter) were evaluated. The six tools employed three different measurement technologies; acoustic, conductance, and capacitance. Woody biomass samples were collected over one season (summer 2011) at three different locations in western Oregon (Corvallis, Dallas, and Clatskanie) for three softwood species and three hardwood species: Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), Ponderosa pine (Pinus ponderosa L.), western hemlock (Tsuga heterophylla (Raf.) Sarg.), hybrid poplar (Populus spp.), Madrone (Arbutus spp.), and Garryana Oak (Quercus garryana Dougl. ex Hook). Twenty 3-meter long log (20 to 400mm diameter) specimens were collected per species; 18 specimens were divided into two different treatments (open vs. covered), and the two remaining specimens were chipped. In addition, approximately 100 kilograms per species of hogfuel (limbs and tops) were collected and chipped. Moisture content measurements of logs, chips, and hogfuel were made regularly over a four month period. These data was used to develop multiple linear regression models for assessing the moisture content of the six species using the six tools. The major factors considered in the regression models were species (6), treatment (2), and tools (6). The data were also used to estimate the sample size needed for each tool. The best tool from each technology type was identified. The results generated from this study show that (1) none of the tools are accurate without calibration for different species, (2) the best model/tool combination could only explain about 80% of the variability in measurements, (3) further product development is required in some cases to ensure that the tools are robust for industrial application, and (4) there is a wide range in efficiency of the tools (i.e., 50 minute tool efficiency range). The Fibre-Gen HM200 and Wile Bio Meter were the most accurate, precise and efficient tools tested. The cost of transporting woody biomass from the forest to woody biomass plants is "optimized" when the moisture content drops to approximately 30% (wet basis). Validation of the models developed for three of the tools tested (Fibre-Gen HM200, Humimeter BLW and the Wile Bio Meter) indicates that the tools are accurate below 35% MC (wet basis). This suggests they could be used for making threshold transportation decisions, i.e., determining when to haul. / Graduation date: 2013