فصلنامه علوم و فناوری نساجی
سال دهم شماره 3 (پاییز 1400)

The aim of this article was to compare of Reactive Dye adsorption isotherm of one- and two-factors on Cotton fabric. In this study, according to the type of fabric used and the two types of dyes used with chemical bases (MCT and MCT/VS), we investigated the effect of three cooperative substances dispersing, urea and penetrating. It should be noted that the Concentration and temperature were also variable. The results of the experiments showed that all three mentioned cooperative materials cause higher penetration and stabilization and improve the stability of both types of dyes mentioned on the tested fabric, in which the use of these materials for both types of dyes is investigated and the results Shown that the order of effect of these materials was different for the two types of dyes. To determine the type of adsorption isotherm, Nernest, Langmuir and Friendlich adsorption isotherms were used and the results indicated that the Langmuir adsorption isotherm is better suited to the test results. This means that the adsorption of RR and RGB Red Reactive dyes by the cellulosic product is superheated. Finally, the results of activation energy data shown that RR dye in the presence of urea and dispersants cooperatives has the lowest activation energy and Arrhenius prediction coefficient, while this has the highest value for RGB dye.

Electrospun nanofibers are a suitable substrate for loading a variety of drugs and extracts due to their controllable properties. In this study, chamomile extract was loaded as an antibacterial agent in polycaprolactone-polyethylene glycol nanofibers. For this purpose, 3: 2, 1: 1 and 2: 3 weight ratio of polycaprolactone-polyethylene glycol solutions were prepared and chamomile extract (7%) was added to the optimal composition and then electrospun. Morphology, cell compatibility, cytotoxicity, extract release and antibacterial properties of the resulting web were examined. Electron microscopy (SEM) images show a suitable and bead-less morphology for nanofiber PCL: PEG (2: 3) containing an extract with an average diameter of 211 ±70 nm. Interactions between the functional groups of polycaprolactone and polyethylene glycol and chamomile extract are observed in the FTIR spectra. The results of cell culture test indicate proper growth and proliferation of fibroblast cells on both chamomile extract loaded and non-loaded nanofibers. The results of MTT test, although confirming the non-toxicity of both extract loaded and non-loaded nanofibers, but the percentage of cell survival was higher on the sample containing chamomile extract. The results of antibacterial test confirm the antibacterial activities of polycaprolactone-polyethylene glycol nanofibers containing chamomile extract against both gram-positive and gram-negative bacteria.

Today, attention is paid to clean technology to reduce pollution of finishing processes in the textile industry.Surface treatment with ultraviolet/ozone gas is an environmentally friendly technology to improve the surface properties of fibers and textiles. In this research, the performance mechanism of Ultraviolet /ozone gas surface preparation on 100% polyethylene terephthalate fabric (with pique structure) has been investigated from various aspects (chemical and physical). Also, the whiteness index, yellowness index, tint and distribution of samples in CIELAB space were evaluated for estimating the colorimetric characteristics of fabrics. The results show that the formation of free radicals on the surface (due to the photochemical interactions) and surface roughening (due to the effect of physical etching) are two key factors in the surface modification of polyethylene terephthalate fabric after Ultraviolet/ozone gas irradiation. Also, study of colorimetric characteristics shows that after surface treatment with Ultraviolet/ozone gas, the polyethylene terephthalate fabric is still white and there is no change in the distribution of samples in the a*b *diagram.v

The purpose aim of this study is was to provide a comprehensive and coherent picture of scientific outputs in the field of marketing in the textile and clothing industry based on scientific documents indexed in the Web of Science (WoS).

The present study is in the category of scientometric studies. The statistical population is all documents indexed in the web science database from 1955 to March 12, 2022, and 525 documents. Excel software and VOSviewer were performed used to analyze analyse the data.

The results showed that scientific products in the marketing of the textile and clothing industry had associated with a gentle and continuous growth trend. The most productive subjects have been more material sciences, trade and commerce, and the interdisciplinary social sciences than other sciences. The top authors were from China and Poland. In the co-authored network of countries, the United States had declared one of the most influential countries with the release of 110 documents. In Co-occurrence keywords, the focus is on the keywords "clothing", "textile", "performance", "market", "sustainability", "impact", "behavior", "fashion", "design" and "business". They had larger nodes and denser representations than other words.

The maps showed that the studies have good network coherence, the study and analysis of the content of the texts can help to better understand the currents of thought in the field of marketing in the textile and clothing industry and to be as a road map for future research in this direction.

Despite the high capacity of sport products market and the considerable productive potential in Iran, activists have not achieved much success in this field. One of the main challenges of this industry is the weakness in branding and marketing products because there is no capital more efficient than a powerful name. In the first phase of this research, the indexes of several articles focusing on branding were obtained in authentic sources, and then the index extraction was completed through semi-structured interviews with branding and sports products experts. In the second phase, in order to investigate the appropriateness of the extracted indicators with the local conditions of the country and the field of Iranian sports brands, The Fuzzy Delphi method was used and a questionnaire was given to academic and industry experts to determine that the indicators are appropriate to the field. In the third phase, using the data-based method, a paradigm model for branding sports products was developed. This model has been evaluated by the structural equation modeling method with PLS approach. The data analysis revealed that the final model comprised a set of phenomenon-based indicators, intervening factors in branding, causal and influential factors, contextual factors, strategies and the consequences. In this study, several categories were achieved in the branding of sports products field, to which paying attention will culminate in the ultimate goal of branding.

In this study, the reasons for women's use of abnormal clothing were investigated by random selection of 120 women in Tehran by completing two questionnaires. The validity of the questionnaire was confirmed by two methods namely form-content and calculating divergent validity and structural validity was assessed by calculating the factor load of the questionnaire questions. The reliability of the questionnaire was confirmed by calculating Cronbach's alpha and also calculating the combined reliability coefficient. Statistical analysis of data in SPSS22 and Smart PLS softwares showed that clothing and individual characteristics are simultaneously the cause of the spread of abnormal clothing subculture in the community but, the second factor is more effective than the first. The effect of not paying attention to the color combination, its compatibility with the body, consumer taste and the desire to be more beautiful young in promoting this subculture is more than other cases. Social class traits influence the choice of inappropriate clothing more than person's personality, her religious beliefs, and cultural characteristics. Escape from religious beliefs, the young's attention to social class, self-exaltation and the desire to be one, lead them to this style of clothing. Inability to produce quality and attractive fabrics, inefficiency of some fashion designers, incorrect training along with some other policies make the situation worse.