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The aim of this study was to determine release rate and changes in polyphenols’ content, which were sorbed to
carboxymethyl cellulose gel and subsequently desorbed. An aqueous extract of blue marc vine variety Fratava was
used as a source of polyphenols. The gel was dried into a solid film and polyphenols were then desorbed again by
dissolving this...
Citations
... The process of giving textiles different chemical or physical treatments to improve their functionality and performance is known as functional finishing (Bashari et al., 2018;Gulrajani & Deepti, 2011;Shahid & Adivarekar, 2020). Textiles can be finished for medical application such as Antimicrobial (Abdul-Reda Hussein et al., 2024;Gulati et al., 2022;Jabar, 2021;Purwar & Joshi, 2004), UV protection (Kathirvelu et al., 2009;Mavri� c et al., 2018;Sankaran et al., 2021), Anti-virus (Afzal et al., 2023;Idumah, 2021), Wound healing (Oliveira et al., 2022;Wollina et al., 2003), Drug delivery (Atanasova et al., 2021;El Ghoul et al., 2017;Gerhardt et al., 2013;Rehan et al., 2017), Hemostatic activity (Edwards et al., 2021;, tissue engineering (Coutinho et al., 2011;Kingsley et al., 2013;Walmsley et al., 2015) and Figure 1 clearly shows the application area of Nanotechnology for deffrent types of medical textile. ...
... 4 Knitted spacer fabrics are sandwiched textiles which usually consist of two outer layers connected but kept apart by a spacer layer. They have been made into compression bandage, 5,6 wound dressing [7][8][9] and impact protector 10-12 due to their particular mechanical and thermophysiological properties. For these uses, the compression behavior plays a very important role. ...
Knitted spacer fabrics can be an alternative material to typical rubber sponges and polyurethane foams for the protection of the human body from vibration exposure, such as automotive seat cushions and anti-vibration gloves. To provide a theoretical basis for the understanding of the nonlinear vibration behavior of the mass-spacer fabric system under harmonic excitation, experimental, analytical and numerical methods are used. Different from a linear mass-spring-damper vibration model, this study builds a phenomenological model with the asymmetric elastic force and the fractional derivative damping force to describe the periodic solution of the mass-spacer fabric system under harmonic excitation. Mathematical expression of the harmonic amplitude versus frequency response curve (FRC) is obtained using the harmonic balance method (HBM) to solve the equation of motion of the system. Parameter values in the model are estimated by performing curve fit between the modeled FRC and the experimental data of acceleration transmissibility. Theoretical analysis concerning the influence of varying excitation level on the FRCs is carried out, showing that nonlinear softening resonance turns into nonlinear hardening resonance with the increase of excitation level, due to the quadratic stiffness term and the cubic stiffness term in the model, respectively. The quadratic stiffness term also results in biased vibration response and causes an even order harmonic distortion. Besides, the increase of excitation level also results in elevated peak transmissibility at resonance.
... These polymeric coatings can be obtained by using polymeric binders often with cross-linking agents in order to withstand better resistance to wear, abrasion, hydrolysis, and repeated washings. Nanocoatings include thin films, nanocapsules, and nanoparticles which are used extensively in biofiltration materials for extracorporeal devices such as artificial kidney, medical fabrics, textile implants, textile substrates for cell growth, and other medical textiles [15,16]. ...
This chapter provides an overview of the textile-based materials for different applications in medical sectors and represents the most important surface modification and finishing techniques used for the improvement of performance and functionality of the medical textiles. Textile materials can be used in the form of fibers, filaments, yarns and fabrics as a specific medical device for the treatment or preventing deterioration of chronic disease. Some of the most important applications of textile-based materials in the medical fields include protective surgical gowns, hygienic products (e.g., sanitary napkins and baby diapers), compression fabrics, wound dressing, sutures, extracorporeal devices, orthotics and prosthetic materials.
In order to meet the requirements of textile-based materials for a specific medical usage, various surface coating, plasma treatment and medical finishing can be applied onto the materials. Textile products can be functionally modified by different polymers, active agents and physical treatments. By virtue of modern technology with the development of
new manufacturing techniques and novel environmentally friendly materials, the market of medical textiles has been rapidly growing in recent decades and will continue to grow in the future.
... Ohura et al. (2010) positive pressure and the moving shear at the soft tissue of the bone bulge, and it indicated that the shear force causes the total pressure to rise greatly, and the acne can be easily formed in the long time. Wollina et al. (2003) pointed out the potential of functional medical textiles for healing chronic wounds such as decubitus. When a dressing is applied to the decubitus area, the damage resulted from the shear stress between the dressing and the mattress should be decreased. ...
... The distance between the two surfaces filled with air and compression-resistant threads enables the realization of several functions like mechanical cushioning, distribution of mechanical pressure, permeability for air and moisture and thermal insulation. They are used as moisture-and thermal-regulating functional components in shoes, outdoor clothing, protective clothing, [2], sport textiles, car industry, [3], upholstery materials for vehicles as well as medical bandages, mattresses and cushioning components for prevention and therapy of decubitus, [4,5]. A special interest is in the application in light weight constructions, [6]. ...
Warp-knitted spacer fabrics are considered, which are plates or shells composed of two knitted plane layers connected by vertical beams. Our aim is to compute the effective stiffness and permeability of such spacer fabrics on the basis of their structure and properties of yarns and the monofil. In order to reduce the computational effort and simplify the computational model, homogenization and dimension reduction techniques are applied. They replace the fabric by an equivalent two-dimensional plate or shell with effective elastic properties. To compute the effective permeability, the fluid simulation is done on the fully resolved micro-structure. The paper demonstrates the algorithm on application examples. We compute the elastic properties of a spacer fabric and its effective permeability for different outer-plane compression stages. Numerical examples were performed by applying the multi-scale simulation tools, developed at Fraunhofer ITWM and by comparing with the corresponding experimental results, based on measurements performed at the TU Dresden. The developed algorithms and simulation tools enable a full virtualisation of the material design adapted to exposure scenarios in various technical application cases, i.e. infiltration processes with polymers in the field of fiber reinforced composites, which enables new discoveries for the designing and manufacturing process of 3D warp-knitted spacer fabrics.
... Advanced materials can be reinforced by these textile platforms for structural applications. The control over fibre architecture is of potential interest for highly loaded structures, enabling fibres to be assembled in specific positions and with necessary orientations to optimize strength and stiffness locally [39]. The cellular components can also take advantage from this arquitecture by producing ECM to generate new tissue, while the scaffold material provides structural integrity and mechanical stability in the mean time [40]. ...
Bone loss in the craniofacial complex can been treated using several conventional therapeutic strategies that face many obstacles and limitations. In this work, novel three-dimensional (3D) biotextile architectures were developed as a possible strategy for flat bone regeneration applications. As a fully automated processing route, this strategy as potential to be easily industrialized. Silk fibroin (SF) yarns were processed into weft-knitted fabrics spaced by a monofilament of polyethylene terephthalate (PET). A comparative study with a similar 3D structure made entirely of PET was established. Highly porous scaffolds with homogeneous pore distribution were observed using micro-computed tomography analysis. The wet state dynamic mechanical analysis revealed a storage modulus In the frequency range tested, the storage modulus values obtained for SF-PET scaffolds were higher than for the PET scaffolds. Human adipose-derived stem cells (hASCs) cultured on the SF-PET spacer structures showed the typical pattern for ALP activity under osteogenic culture conditions. Osteogenic differentiation of hASCs on SF-PET and PET constructs was also observed by extracellular matrix mineralization and expression of osteogenic-related markers (osteocalcin, osteopontin and collagen type I) after 28 days of osteogenic culture, in comparison to the control basal medium. The quantification of convergent macroscopic blood vessels toward the scaffolds by a chick chorioallantoic membrane assay, showed higher angiogenic response induced by the SF-PET textile scaffolds than PET structures and gelatin sponge controls. Subcutaneous implantation in CD-1 mice revealed tissue ingrowth's accompanied by blood vessels infiltration in both spacer constructs. The structural adaptability of textile structures combined to the structural similarities of the 3D knitted spacer fabrics to craniofacial bone tissue and achieved biological performance, make these scaffolds a possible solution for tissue engineering approaches in this area.
... Pads were much less effective under this view [76]. Some naturally occurring polymers like chitosan, alginates or kapok fibres offer antimicrobial activity and biocompatibility [77]. Supramolecular structures fixed to textile fibres like cyclodextrins allow to reduce bacterial contamination of sweat-gland-rich body parts like the axillary region or the feet [77]. ...
... Some naturally occurring polymers like chitosan, alginates or kapok fibres offer antimicrobial activity and biocompatibility [77]. Supramolecular structures fixed to textile fibres like cyclodextrins allow to reduce bacterial contamination of sweat-gland-rich body parts like the axillary region or the feet [77]. The importance of laundering in the prevention of skin infections has been discussed in detail elsewhere [78]. ...
... This effect was probably also measured in the cotton fabric group, but was less pronounced due to the moisture buffering ability of cotton. The higher water sorption and water holding capacity of cotton fiber could be responsible for the fabric dependent development of SCH and TEWL values [38]. ...
Background:
Pressure Ulcers (PUs) are a severe form of skin and soft tissue lesions, caused by sustained deformation. PU development is complex and depends on different factors. Skin structure and function change during prolonged loading on PU predilection sites and surfaces being in direct contact with skin are likely to have an impact as well. Little is known about the influence of fabrics on skin function under pressure conditions.
Objectives:
To investigate skin responses to sustained loading in a sitting position and possible differences between two fabrics.
Methods:
Under controlled conditions 6 healthy females (median age 65.0 (61.0-67.8) years) followed a standardized immobilization protocol of a sitting position for 45 min on a spacer and on a cotton fabric. Before and after the loading period skin surface temperature, stratum corneum hydration, transepidermal water loss (TEWL), erythema, skin elasticity and 'relative elastic recovery' were measured at the gluteal areas.
Results:
A 45 min sitting period caused increases of skin surface temperature and erythema independent of the fabric. Loading on spacer fabric showed a two times higher increase of TEWL compared to cotton. Stratum corneum hydration showed slight changes after loading, skin elasticity and 'relative elastic recovery' remained stable.
Conclusions:
Sitting on a hard surface causes skin barrier changes at the gluteal skin in terms of stratum corneum hydration and TEWL. These changes are influenced by the fabric which is in direct contact to the skin. There seems to be a dynamic interaction between skin and fabric properties especially in terms of temperature and humidity accumulation and transport.
... The textile field offers a collection of state-of-the-art technologies that can markedly contribute to produce innovative complex fiberbased scaffolds for TE applications. 145,146 In fact, over the last decades, advances made on the development of superior textile products allowed for the upgrading of the processing technologies resulting in a diversity of 3D textured materials with highly controlled mechanical properties and porosities. Moreover, being computer assisted, these technologies have potential for the production of predesigned architectures with predictable properties based on the patient's own needs. ...
... 155 Skin, being a very compliant tissue, constitutes one of the most obvious applications for biotextiles, as in the case of wound dressings or TE products. 146 The optimal design of such textile implants requires a multi-and interdisciplinary combination of skills. Despite the fact that some of the traditional textiles have fulfilled primary quality requirements such as biocompatibility, flexibility or strength, there is a need for further developing of these systems to meet more demanding and specialized functions. ...
... It is evident that the disciplines of polymer chemistry, fiber science, textile technology and engineering have unique roles to play when combined with molecular biology, biochemistry and biotechnology to design and develop novel and high performance biotextile scaffolds for TE applications. [145][146][147] Scaffolds shaped with biodegradable polymers such as PGA, polylactic acid (PLA), polycaprolactone (PCL), starch or silk fibers were investigated for cell transplantation and regeneration of various tissues such as nerve, skin, ligament, bladder, cartilage and bone. 156,157 Several methods were already developed and proposed to prepare porous 3D biodegradable scaffolds for TE, including gas foaming, fiber extrusion and bonding, 3D printing, phase separation, emulsion freeze-drying, and porogen leaching or rapid prototyping. ...
Scaffolds for tissue engineering are devices exploiting specific and complex physical and biological functions, in vitro or in vivo , communicating through biochemical and physical signals with cells and, when implanted, with the body environment.
Scaffolds can be produced with several materials, most of them of synthetic origin, with an increasing interests on the use of biological or nature-derived materials. In most cases fabrication technologies are derived from already well-established industrial processes, with some new specific technologies having been developed in the last years to address required complexities.
Often, a generalist approach is followed for the translation of materials and technologies designed for other applications, without considering the specific role of the scaffold from a physical and biological point of view. The book illustrates the scaffolds design principles with particular relevance to the biological requirements needed to control and drive the biological cross-talk, and reviews materials and fabrication and validation methods.
The book is mainly addressed to graduate and post-graduate students, who are approaching tissue engineering or experienced researchers who wish to have condensed but comprehensive information on materials, fabrication techniques, biological principles, and design criteria. The contributors are among the scientific leaders in their respective fields.
... In the biomedical field, tissue engineering (TE) represents a specific area in which textile technologies can have an important contribution [1,2]. Maximization of tissue attachment to materials requires a highly organized porous structure for tissue integration and a template for cell assembly, combined with structural properties analogous to those of the living tissue. ...
... In the repair and regeneration of the peripheral nerves, woven tubular shaped guides were used [19]. Skin is avery compliant tissue that constitutesone of the most obvious applications for biotextiles, as in the case of wound dressings or tissue engineering products [2]. The optimal design of such textile implantsrequires a multi-and interdisciplinary combination of skills[1, 2,11].Despite the fact that some of the traditional textiles have fulfilled primary quality requirements such asbiocompatibility, flexibility or strength, there is a need for further develop new systems to meet more demanding and specialized functions.Moutos et al. [20] have designed a biomimetic 3D woven composite scaffold for functional tissue engineering of cartilage. ...
... Skin is avery compliant tissue that constitutesone of the most obvious applications for biotextiles, as in the case of wound dressings or tissue engineering products [2]. The optimal design of such textile implantsrequires a multi-and interdisciplinary combination of skills[1, 2,11].Despite the fact that some of the traditional textiles have fulfilled primary quality requirements such asbiocompatibility, flexibility or strength, there is a need for further develop new systems to meet more demanding and specialized functions.Moutos et al. [20] have designed a biomimetic 3D woven composite scaffold for functional tissue engineering of cartilage. Chen et al. [21] developed a new practical ligament scaffold based on the synergistic incorporation of a plain knitted silk structure and a collagen matrix. ...
Textile-based technologies are considered as potential routes for the production of 3D porous architectures for tissue engineering (TE) applications. We describe the use of two polymers, namely polybutylene succinate (PBS) and silk fibroin (SF) to produce fiber-based finely tuned porous architectures by weft and warp knittings. The obtained knitted constructs are described in terms of their morphology, mechanical properties, swelling ability, degradation behaviour, and cytotoxicity. Each type of polymer fibers allows for the processing of a very reproducible intra-architectural scaffold geometry, with distinct characteristics in terms of the surface physicochemistry, mechanical performance, and degradation capability, which has an impact on the resulting cell behaviour at the surface of the respective biotextiles. Preliminary cytotoxicity screening shows that both materials can support cell adhesion and proliferation. Furthermore, different surface modifications were performed (acid/alkaline treatment, UV radiation, and plasma) for modulating cell behavior. An increase of cell-material interactions were observed, indicating the important role of materials surface in the first hours of culturing. Human adipose-derived stem cells (hASCs) became an emerging possibility for regenerative medicine and tissue replacement therapies. The potential of the recently developed silk-based biotextile structures to promote hASCs adhesion, proliferation, and differentiation is also evaluated. The obtained results validate the developed constructs as viable matrices for TE applications. Given the processing efficacy and versatility of the knitting technology, and the interesting structural and surface properties of the proposed polymer fibers, it is foreseen that our developed systems can be attractive for the functional engineering of tissues such as bone, skin, ligaments or cartilage and also for develop more complex systems for further industrialization of TE products. Copyright © 2013 Editorial Department of Journal of Donghua University. All rights reserved.
