ITAST (Iranian Textile Association of Science and Technology) Journal of Textiles and Polymers 2322-5203 10 3 2022 09 01 Innovative Method for Demineralization of Cellulosic Substrates via Morpholinium Hydrogen Sulfate 3 12 159069 10.48302/jtp.2022.159069 EN Jalal Rahmatinejad Department of Textile Engineering, Isfahan University of Technology, P.O. Box 84156-83111, Isfahan, Iran. Akbar Khoddami Department of Textile Engineering, Isfahan University of Technology, P.O. Box 84156-83111, Isfahan, Iran. Amir Abdolmaleki Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71467-13565, Iran Hossein Izadan Department of Textile Engineering, Isfahan University of Technology, P.O. Box 84156-83111, Isfahan, Iran. Journal Article 2022 10 17 Currently, replacement of hazardous chemical treatments with environmentally-friendly alternatives coupled with assimilation of different processes in one step in order to save water and energy and prevent the production of waste is one of the priorities of industries that seek sustainable development and cleaner production. Conventional demineralization of cotton fabric is mostly carried out using mineral acids which are corrosive, toxic, and above all, could cause fabric damage. In addition, demineralization as a separate step requires a high rate of water and energy consumption. This study examines the possibility of simultaneous desizing and demineralization using an acidic and nonvolatile ionic liquid. Evaluation of different experimental conditions revealed that under proper condition via morpholinium hydrogen sulfate, simultaneous demineralization and starch desizing of the cellulosic substrate could be carried out with a significant decrease in the concentration of cationic metal ions like Fe2+, Cu2+, Mg2+, Ca2+, and Zn2+ while the quality of desizing is at the same range as conventional enzymatic hydrolysis (Tegewa: 8-9). This new method did not show any negative effects on the substrate tensile properties.

http://www.itast.ir/article_159069_0f6ddb2a283a68a72f8043454ea2fc59.pdf

ITAST (Iranian Textile Association of Science and Technology) Journal of Textiles and Polymers 2322-5203 10 3 2022 08 23 Straight-Line Loop Models for the Basic Structures of Weft Knitted Fabric (Plain, Rib 1×1, and Interlock) 13 21 161798 10.48302/jtp.2022.161798 EN Zahra Rezaye Soltanabadi Department of Textile Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran. Ali Asghar Asgharian Jeddi Department of Textile Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran. Hadi Dabiryan Department of Textile Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran. 0000-0001-5161-2849 Journal Article 2022 11 28 Considering the importance of straight-line model in fabric cells to model their mechanical properties, straight-line models have been developed to fulfill the geometry of plain, rib 1×1, and interlock weft knitted fabrics in 2D and 3D states. To verify the generated models, these fabrics were produced in three densities. The loop lengths of the produced fabrics were precisely measured and compared with the loop lengths calculated by models. The results showed that the straight-line model is capable of predicting the loop length of these fabrics.

http://www.itast.ir/article_161798_ada4ae0c2b6aa87c1eb024d5de4f03b9.pdf

ITAST (Iranian Textile Association of Science and Technology) Journal of Textiles and Polymers 2322-5203 10 3 2022 09 01 Effect of APTES-Halloysite Nanotubes on the Release Characteristic of Cellulose Acetate/Curcumin Film 23 34 164448 10.48302/jtp.2022.164448 EN Elnaz Salarian Biomedical Engineering Department, Islamic Azad University, Central Tehran Branch, Tehran, Iran. Atefeh Solouk Biomedical Engineering Department, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran. Somaye Akbari Textile Engineering Department, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran. Journal Article 2023 01 07 In this research, the fabrication of nanocomposite films consisting of cellulose acetate (CA), pristine and modified halloysite nanotubes (mHNTs), and curcumin was investigated by solution casting method for wound dressing applications. The chemical structure, morphology, and surface properties of the samples were studied by Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and contact angle measurement. Furthermore, the effects of modified halloysite nanotube were examined on mechanical properties, water vapor transmission rate (WVTR), and curcumin release. The results revealed that mHNTs enhanced mechanical strength and hydrophilicity, as well as it increased curcumin release, and controlled its release rate, which this could be attributed to the high activity of terminal groups (amine) comparing to pristine halloysite nanotubes (HNTs). Moreover, better adhesion and integrity between the nanoparticles and polymeric matrix were confirmed by enhancement in mechanical strength. The cell proliferation assay also indicated the biocompatibility and nontoxicity of the samples and their potential of being an appropriate substrate for cell adhesion.

http://www.itast.ir/article_164448_38674ab087fe2356079d3b5f0e9a5b44.pdf

ITAST (Iranian Textile Association of Science and Technology) Journal of Textiles and Polymers 2322-5203 10 3 2022 09 01 New Approach to characterize low-velocity impact behavior of sandwich-structured composite reinforced with weft-knitted spacer fabric 35 41 176133 10.48302/jtp.2023.360977.1253 EN Fatemeh Hasanalizadeh Amirkabir University of technology Hadi Dabiryan 0000-0001-5161-2849 Journal Article 2022 09 07 In the present study, a new approach was developed to characterize the low-velocity impact behavior of sandwich-structured composites reinforced with weft-knitted spacer fabric. This approach is to define various indexes to describe impact resistance of spacer fabric composites. Experimental results of drop-weight impact test was used to define different approaches in order to investigate different aspects of impact behavior of sandwich composites. Novel indexes i.e. Relative Displacement Index (RDI), Energy Per Pile Index (EPI), Damaged Volume Index (DVI), Damaged Pile Index (DPI) and Damaged Area Index (DAI) were introduced to explain different features of impact behavior of composites reinforced with 1×1-Rib gaiting, 3×3-Rib gaiting and 5×5-Rib gaiting weft-knitted fabrics. As conclusion, pile orientation has significant effect on the impact resistance of sandwich composites. Rib3 sample has the maximum impact stiffness due to the low RDI value, and also it has the minimum value of DVI value, which describes both the area and the depth of the damage. In addition to the regular damage pattern of Rib3 sample, it has minimum damage based on the DPI value. Rib5 sample has the maximum impact toughness because of maximum values of AEI value. Also, the highest damaged area belongs to Rib5 sample based on the DAI value.

http://www.itast.ir/article_176133_79290ab757c0009d348b99d509af8845.pdf

ITAST (Iranian Textile Association of Science and Technology) Journal of Textiles and Polymers 2322-5203 10 3 2022 09 01 A model for Fabric Compressibility and Compressed Fabric Cover Factor Using Response Surface Metho 43 53 176135 10.48302/jtp.2022.170705 EN Reyhaneh Sarpanahi Department of Textile Engineering, Yazd University, Yazd, Iran Mohsen Hadizadeh Department of Textile Engineering, Yazd University, Yazd, Iran 0000-0001-6049-7539 Zeynab Soltanzade Department of Textile Engineering, Yazd University, Yazd, Iran Saeed Fattahi Department of Textile Engineering, Yazd University, Yazd, Iran Journal Article 2022 08 19 Fabric compressibility has a significant effect on the application, comfort, quality, and thermal properties of the fabric. Lateral compression affects the diameter of the yarns and fabric density, which causes a change in the cover factor (CF). The purpose of this paper is to investigate fabric compressibility, the cover factor, and the cover factor variation in compressed states. In this research, woven fabrics were produced with different weft density and different weft materials (polyester and viscose). The compression test was conducted at different speeds and the fabric was filmed at the same time. The density and the diameter of the warp and weft yarns, as well as the CF were extracted by image processing using video pictures. Then the fabric compressibility, CF, and CF Variation (CFV) were modeled using the response surface method (RSM). The results obtained in the study clearly showed these models are acceptable with a high Correlation. According to this model, with increasing pressure and decreasing density, fabric compressibility and CFV often increase. The compression variation range and CF were greater in polyester fabrics than in viscose fabrics by changing weft density.

http://www.itast.ir/article_176135_639542c2c5e64a1a786ca667ef160714.pdf