ITAST (Iranian Textile Association of Science and Technology) Journal of Textiles and Polymers 2322-5203 12 3 2025 02 19 Antibacterial properties of PCL-based nanofibers loaded with ZnO nanoparticles synthesized via sol-gel method خواص ضد باکتریایی نانوفیبرهای مبتنی بر PCL بارگذاری شده با نانوذرات ZnO سنتز شده به روش سل-ژل 234293 10.48302/jtp.2025.526555.1314 EN Seyed Hajir Bahrami Hafez Ave. 0000-0001-5777-8428 Sanam Amiri Amirkabir university Sahar Amiri Azad university Journal Article 2025 06 02 Nanofibers have attracted increasing attention in biomedical applications owing to their high surface area, porosity, and biocompatibility, which allow them to mimic the extracellular matrix and promote cell adhesion and regeneration. In this study, zinc oxide (ZnO) nanoparticles were synthesized via the sol–gel method using zinc acetate dihydrate as a precursor and were characterized by FTIR, FESEM, and EDAX analyses. The synthesized nanoparticles exhibited an average size of 30–40 nm with uniform dispersion. These nanoparticles, along with commercial ZnO, were incorporated into polycaprolactone (PCL) nanofibers fabricated by electrospinning. The resulting nanofibers displayed diameters in the range of 250–800 nm, depending on the nanoparticle content and electrospinning conditions. Antibacterial activity was evaluated using inhibition zone assays against Escherichia coli (Gram-negative) and Staphylococcus aureus (Gram-positive). PCL nanofibers containing sol–gel derived ZnO showed superior antibacterial efficiency, with inhibition zones up to 42 mm against S. aureus and 28 mm against E. coli, compared with nanofibers containing commercial ZnO. The enhanced activity is attributed to the smaller size, higher surface reactivity, and homogeneous distribution of sol–gel ZnO nanoparticles. These findings highlight the potential of sol–gel ZnO/PCL nanofibers as advanced antibacterial scaffolds for biomedical applications.

ITAST (Iranian Textile Association of Science and Technology) Journal of Textiles and Polymers 2322-5203 12 3 2024 09 01 Simulation of 301 lockstitch at different stitch densities for the prediction of sewing thread consumption شبیه‌سازی بخیه لاک استیچ 301 در تراکم‌های مختلف دوخت برای پیش‌بینی مصرف نخ دوخت 240868 10.48302/jtp.2026.545511.1322 EN Mohsen Bahador Najafabadi دانشجو 0009-0002-2786-5277 Esfandiar Ekhtiyari Department of Textile Engineering, Yazd University Zeynab Soltanzadeh Department of Textile Engineering, Yazd University Journal Article 2025 09 10 Sewing threads are a critical component in garment manufacturing, and accurate prediction of their consumption is essential for efficiency and cost reduction. This study employs CATIA software to simulate 3D modeling of a 301 lockstitch under varying stitch densities and thread counts. The simulation determines the required sewing thread length for producing this stitch type, incorporating physical properties of sewing threads and fabric layer thickness. Three stitch densities (3, 4 and 5 stitches per centimeter, SPC) were modeled, with fabric thickness measured using a digital thickness gauge to enhance accuracy compared to conventional computational approaches. Validation was performed by comparing simulation outputs with experimental values obtained through the unraveling technique and with results from established geometrical based models methods. The findings demonstrated that the CATIA based simulation achieved high accuracy (2.62 % error) in predicting sewing thread consumption, outperforming conventional geometric approaches. Furthermore, this study highlights the influence of stitch density and fabric thickness on thread usage and establishes a reliable computational framework for industrial applications. Unlike earlier studies that relied primarily on mathematical or geometrical approximations, the novelty of this research is the use of advanced CAD simulation (CATIA V5R21) combined with experimentally measured fabric thickness to predict sewing thread consumption, providing a more accurate and versatile framework for garment manufacturing.

ITAST (Iranian Textile Association of Science and Technology) Journal of Textiles and Polymers 2322-5203 12 3 2024 09 01 Encapsulation of Zeolite/clindamycin drug into PXDDA/PVA nanofibers to investigate drug delivery 240876 10.48302/jtp.2026.551085.1335 EN Seyed Hajir Bahrami Hafez Ave. 0000-0001-5777-8428 Mohadese Sharifi Amirkabir University Journal Article 2025 10 04 This study aimed to develop electrospun nanofibrous based on poly (xylitol-co-dodecanedioic acid) (PXDDA) blended with polyvinyl alcohol (PVA), incorporating clindamycin drug (CD)-loaded zeolite (ZO) particles as capsule for controlled drug delivery in wound-healing applications. Since PXDDA alone could not be electrospun, PVA was added to achieve suitable viscosity and conductivity. Response Surface Methodology (RSM) was used to optimize electrospinning parameters, resulting in uniform nanofibers with an average diameter of 395 ± 76 nm at 17.07% PXDDA, 10% PVA polymer solutions, voltage 20 kV, and flow rate 0.75 mL/h. Incorporation of clindamycin/ZO capsules at 2/2% and 2/5% (w/w) increased fiber diameter to 545 ± 110 nm and 588 ± 149 nm, respectively, due to higher solution viscosity and capsule entrapment. Crosslinking with glutaraldehyde/HCl vapor enhanced structural stability and influenced hydrophilicity, with centrifuged capsules showing higher contact angles by reducing free drug in the polymer matrix. Drug-release studies demonstrated that centrifuged capsules effectively minimized burst release and enabled sustained release over 48 h, following Higuchi diffusion kinetics. Overall, the optimized PXDDA/PVA nanofibers with centrifuged CD/ZO capsules provide controlled antibiotic delivery and appropriate surface properties to cell attachment, highlighting their strong potential as antibacterial scaffolds for wound healing.

ITAST (Iranian Textile Association of Science and Technology) Journal of Textiles and Polymers 2322-5203 12 3 2024 09 01 Synergistic Modification of Cotton Fabric with Polyamidoamine Dendrimer and Cationic Gemini Surfactant for Enhanced Functional Performance هم افزایی اصلاح پارچه پنبه ای با دندریمر پلی آمیدو آمین و سطح فعال کاتیونی جمینی برای افزایش عملکردی 244672 10.48302/jtp.2026.551013.1334 EN Somaye Akbari Amirkabir University of Technology Mahdieh Eskafi Anzabi Textile department of Amir Kabir University of Technology Journal Article 2025 10 03 This study investigates a novel and synergistic approach to functionalize cotton fabric using a second-generation Polyamidoamine (PAMAM) dendrimer and a cationic Gemini surfactant. The modification was efficiently carried out via the pad-dry-cure method using various concentrations of the two agents. The optimal treated fabric was identified through a comprehensive staining test utilizing model anionic (C.I. Acid Red 1) and cationic (C.I. Basic Blue 9) dyes. The optimal sample demonstrated significant improvements in dyeing performance, showing a 500% increase in color strength with the anionic dye (AR1) and a 27.6% increase with the cationic dye (BB9), confirming successful surface charge modification. Attenuated Total Reflectance-Fourier Transform Infrared (ATR-FTIR) spectroscopy confirmed the effective incorporation of both the dendrimer and Gemini compounds onto the cotton surface. Beyond dyeing, the modified fabric exhibited remarkable functional and mechanical enhancements. Stress-strain analysis revealed a significant 50% increase in elongation compared to raw cotton. Complete inhibition (100\% reduction) was achieved against both Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria. Furthermore, After 10 washing cycles (Standard Test Method Two), the modified fabric retained substantial activity, maintaining a 60% reduction against S. aureus and a 70% reduction against E. coli. These results highlight the powerful synergistic effect of the PAMAM dendrimer and Gemini surfactant, establishing a straightforward method for producing cotton textiles with combined superior dyeing affinity, potent durable antimicrobial activity, and improved mechanical flexibility. This study investigates a novel and synergistic approach to functionalize cotton fabric using a second-generation Polyamidoamine (PAMAM) dendrimer and a cationic Gemini surfactant. The modification was efficiently carried out via the pad-dry-cure method using various concentrations of the two agents. The optimal treated fabric was identified through a comprehensive staining test utilizing model anionic (C.I. Acid Red 1) and cationic (C.I. Basic Blue 9) dyes. The optimal sample demonstrated significant improvements in dyeing performance, showing a 500% increase in color strength with the anionic dye (AR1) and a 27.6% increase with the cationic dye (BB9), confirming successful surface charge modification. Attenuated Total Reflectance-Fourier Transform Infrared (ATR-FTIR) spectroscopy confirmed the effective incorporation of both the dendrimer and Gemini compounds onto the cotton surface. Beyond dyeing, the modified fabric exhibited remarkable functional and mechanical enhancements. Stress-strain analysis revealed a significant 50% increase in elongation compared to raw cotton. Complete inhibition (100\% reduction) was achieved against both Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria. Furthermore, After 10 washing cycles (Standard Test Method Two), the modified fabric retained substantial activity, maintaining a 60% reduction against S. aureus and a 70% reduction against E. coli. These results highlight the powerful synergistic effect of the PAMAM dendrimer and Gemini surfactant, establishing a straightforward method for producing cotton textiles with combined superior dyeing affinity, potent durable antimicrobial activity, and improved mechanical flexibility.

ITAST (Iranian Textile Association of Science and Technology) Journal of Textiles and Polymers 2322-5203 12 3 2024 09 01 Theoretical Study on the Poisson’s Ratio of Tubular Braid’s Structure Considering Different Structural Deformation Regimes 245222 10.48302/jtp.2026.570682.1350 EN Hadi Dabiryan Textile Engineering Department, Amirkabir University of Technology, Tehran, Iran 0000-0001-5161-2849 Mehrdad Arianpour Textile Engineering Department, Amirkabir University of Technology, Tehran, Iran Majid Safar Johari Textile Engineering Department, Amirkabir University of Technology, Tehran, Iran Journal Article 2026 02 21 Abstract In the first part of this paper, an experimental study was conducted to investigate the effect of some important structural parameters of braid structure on Poisson’s ratio. This paper aims to build some theoretical equations to predict the Poisson’s ratio by geometrical modelling. Poisson’s ratio of braid structure was studied in three different parts. First, the Poisson’s ratio was investigated at infinitesimal strains, and second, it was investigated at the area between two jamming of the structure (tensile and compressive jamming). Finally, an equation was derived to predict the Poisson’s ratio of braid structure at any point of its longitudinal strain. By using an exponential curve fitting, a modified equation was derived to predict the Poisson’s ratio of braid structure at infinitesimal strain area. The results of verification were satisfying. Keywords: Tubular Braid; Poisson’s Ratio; Young’s modulus; structural parameters. Keywords: Tubular Braid; Poisson’s Ratio; Young’s modulus; structural parameters. Keywords: Tubular Braid; Poisson’s Ratio; Young’s modulus; structural parameters.

ITAST (Iranian Textile Association of Science and Technology) Journal of Textiles and Polymers 2322-5203 12 3 2026 06 14 A Review on the Self-Healing Property of Core-Sheath Nanofibers: Applications and Recent Advances 245564 10.48302/jtp.2026.533423.1316 EN Maryam Zeynivand Mojarrad فارغ التحصیل رشته مهندسی نساجی گرایش تکنولوژی دانشگاه صنعتی امیرکبیر 0009-0000-7872-5798 Aliakbar Ghareh Aghaji textile engineering department, amirkabir university of technology 0000-0002-3819-5048 Journal Article 2025 07 09 Self-healing in nature is an outstanding phenomenon. The survival of animals, plants, and human beings is easier because of their ability to recover any damage to the living organs. A review of recent advances pertinent to the self-healing performance of materials and co-electrospinning is presented in this study. Self-healing agents produced by electrospinning are one of the most promising materials for self-healing and exhibit a growing trend for a wide range of applications. The current study aims to report contributions and advances relating to the self-healing performance of materials by using co-electrospinning and the ability of nanofibers to self-heal from damage. It provides an eyesight for further progress of this promising technology. This review comprises investigations in which the self-healing nanofibers produced via the co-electrospinning process and their applications in some industries are focused. The corrosion protection of metals and damage repair in composites are addressed as well. Keywords: Self-healing, Core-shell nanofibers, Co-axial -electrospinning, Corrosion protection, Composite materials.