scholarly journals Nanomaterial Antibacterial Technology in the Design of Antibacterial Fabrics for Sports Clothing

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Yuan Feng
Keyword(s):  
Ph Value ◽  
Knitted Fabric ◽  
Nano Tio2 ◽  
Dispersing Agent ◽  
Antibacterial Textiles ◽  
Finishing Process ◽  
Stirring Time ◽  
Finishing Agent ◽  
Dispersing Medium ◽  
Selection Of

In recent years, nanomaterials have been widely used in sports equipment, and their application in sportswear has also attracted wide attention. This research mainly discusses the application of nanomaterial antibacterial technology in the design of antibacterial fabrics for sports apparel. The method of adding nano-TiO2 to the antibacterial textiles varies with the type of fiber or fabric, and the finishing method also changes accordingly. For chemical fibers, the method of blending spinning is mainly used. By adding nano-antibacterial particles in the spinning solution, the polymer is ejected from the spinneret to make antibacterial fibers. This processing method is characterized by good antibacterial durability. The preparation of antimite finishing agent is mainly the dispersion of nanopowder. The selection of the best dispersant is mainly determined by measuring the change of the volume sedimentation rate of TiO2 after 5 days under different dosage and pH value of each dispersant. Then, the particle size of nano-TiO2 and Ag in different dispersing conditions was tested by TEM, and finally, the best dispersing agent and dispersing process were determined. The optimum of nano-antimite and antibacterial finishing agent is as follows: the dispersing agent is TW-80, the amount of anhydrous ethanol in dispersing medium is 5 times that of powder, the amount of dispersing agent is 1.5 times that of powder, the pH value is 7, and the stirring time is not less than 30 min. In the preparation of nano-antimite and antibacterial finishing agent, nanomaterials were used. The weight of nano-TiO2 powder was 20 grams and that of Ag was 20 grams. The dispersion medium (absolute ethanol) was 100 mL of dispersant. The amount of TW-80 was 30 g, the amount of citric acid was 60 g, the emulsion was very stable, and there was only a small amount of precipitation after being static for 5 days. Considering the characteristics of silk knitted fabric, this experiment uses the exhaustion method in the finishing process to finish the silk knitted fabric. After 50 times of washing, the antibacterial rate of Staphylococcus aureus and Escherichia coli reached 95.13% and 87.44%, respectively. This study provides guidance for the application of nanomaterials in the antibacterial field of sports clothing.

Research on Anti-Felting Finishing Process of Wool Knitted Fabric with Protease

2011 ◽  
Vol 383-390 ◽  
pp. 5492-5495 ◽  
Author(s):  
Hua E Wang
Keyword(s):  
Ph Value ◽  
Orthogonal Experiment ◽  
Acid Protease ◽  
Process Conditions ◽  
Knitted Fabric ◽  
Optimal Process ◽  
Technical Parameters ◽  
Finishing Process ◽  
Protease Treatment ◽  
Energy Saving Technology

In this paper, acid protease treatment was studied on anti-felting finishing of wool knitted fabric and the optimal process conditions were obtained by orthogonal experiment. The technical parameters were hydrogen peroxide concentration 40mL/L, temperature 45°C, time 45min, pH value 8, concentration of protease 5 % (owf), pH value 5, temperature 40°C and time 35min. Through this process, the felt resistance property of wool knitted fabric has been improved greatly. Because of low temperature, energy consumption, environmental pollution, this process belongs to environmental protection and energy saving technology.

Development of Coolsmart Functional Knitted Fabrics

2012 ◽  
Vol 503-504 ◽  
pp. 498-502 ◽  
Author(s):  
Lan Qing Feng ◽  
Yan Jun Liu
Keyword(s):  
Pattern Formation ◽  
Moisture Absorption ◽  
Raw Materials ◽  
Knitted Fabric ◽  
Machine Code ◽  
Knitted Fabrics ◽  
Bacterial Function ◽  
Fabric Structures ◽  
Selection Of

Based on the main features of coolsmart fiber and the theory of knitted fabric structures， two structures of sports and leisure knitted fabrics with fast moisture absorption, description and anti-bacterial function are introduced in this article, detailing the selection of raw materials, pattern formation effect, the machine code organization and cam set out.

The Application of Microwave Technology in the Anti-Felting Finishing Process

2012 ◽  
Vol 184-185 ◽  
pp. 1442-1445
Author(s):  
Shu Zhao ◽  
Yong Qing Ding ◽  
Qi Chi Yu
Keyword(s):  
Hydrogen Peroxide ◽  
Environmentally Friendly ◽  
Knitted Fabric ◽  
Microwave Technology ◽  
Microwave Pretreatment ◽  
Finishing Process

In order to get a kind of environmentally anti-felting finishing process for woolen knitted knitted fabric,the method of microwave / hydrogen peroxide pretreatment is applied and the effect of chitosan anti-felting finishing process is studied in this paper. The results show that the application of microwave technology can greatly reduce the time of pretreatment and increase the efficiency of pretreatment; the anti-felting process of hydrogen peroxide/microwave pretreatment combined with chitosan finishing for the woolen knitted fabric is effective, environmentally friendly.

Study on Dyeing of Lyocell Knitted Fabric with Grape Seed Extract Dyes

2012 ◽  
Vol 550-553 ◽  
pp. 1633-1636 ◽  
Author(s):  
De Ling Chi ◽  
Hu Sheng Yu ◽  
Shan Shan Zhao
Keyword(s):  
Ph Value ◽  
Grape Seed Extract ◽  
Grape Seed ◽  
Seed Extract ◽  
Knitted Fabric ◽  
Light Fastness ◽  
Preparation Temperature ◽  
Dyeing Method ◽  
Dyed Fabric ◽  
Better Than

The natural vegetable dye grape seed extract (GSE) was applied on the direct dyeing of lyocell knitted fabric. By changing the dyeing condition, the modified process was derived after evaluating various fastnesses of the dyed fabric. The direct dyeing method should be under the condition of GSE’s concentration 5g/L, bath preparation temperature 80°C, pH value 3, bath ratio 1:30, dyeing time 60min. The color is very sensitive to pH and GSE’s concentration. The rubbing fastness, washing fastness and light fastness is good, the acid perspiration fastness is better than the alkaline perspiration fastness.

Anti-Pilling Finishing of Bamboo Pulp Knitted Fabrics by Cellulase

2011 ◽  
Vol 233-235 ◽  
pp. 1292-1295
Author(s):  
Hua E Wang
Keyword(s):  
Ph Value ◽  
Orthogonal Test ◽  
Knitted Fabrics ◽  
Bamboo Pulp ◽  
The Poor ◽  
Finishing Process

For the poor anti-pilling performance of bamboo pulp knitted fabrics, the anti-pilling finishing process of bamboo pulp knitted fabrics by cellulase was investigated in this paper. The optimal finishing conditions obtained by using the factorial and orthogonal test are concentration of cellulase 8 % (owf), pH value 5, temperature 50and time 30min. After finishing, the anti-pilling property of bamboo pulp knitted fabrics has been greatly improved with the pilling grades increased from 2 to 3, and a partial improvement of the fabric appearance and hand feeling has been also achieved.

Effect of Dyeing and Finishing Process on Anti-Ultraviolet Properties of PA6 Knitted Fabric

2013 ◽  
Vol 785-786 ◽  
pp. 651-655
Author(s):  
Wen Qin Du ◽  
Xiao Liang liu ◽  
Xin Chen
Keyword(s):  
Raw Material ◽  
Knitted Fabric ◽  
Concentration Increase ◽  
Knitted Fabrics ◽  
Finishing Process ◽  
Higher Temperature

This experiment used PA6 anti-ultraviolet properties fabric which specifications were adding a content of 0.3% nanomaterial 70D/24F SD DTY and adding a content of 0.7% nanomaterial 70D/48F SD DTY as raw material. After weaving, we analysis the influence on dye concentration and postboarding process for anti-ultraviolet properties of PA6 knitted fabrics. The result shows that the more dye concentration increase, the better anti-ultraviolet properties of fabric raise and the higher temperature or the slower speed of the postboarding, the faster anti-ultraviolet properties of fabric decline.

The Development of Antibacterial-Fire Retardant Bamboo Pulp/Cotton Tufted Carpets

2014 ◽  
Vol 556-562 ◽  
pp. 149-153 ◽  
Author(s):  
Jin Ming Lu
Keyword(s):  
Flame Retardant ◽  
Antibacterial Agent ◽  
Fire Retardant ◽  
Antibacterial Performance ◽  
Bamboo Pulp ◽  
Finishing Process ◽  
Finishing Agent

In order to develop good antibacterial-fire retardant bamboo pulp/cotton tufted carpet, the paper selects the antibacterial agent and flame retardant, the antibacterial finishing agent adopts FK732 and FK822, the flame retardant adopts DM-07, the flame retardant finishing and antibacterial finishing process is optimized, the optimization of the finishing process is determined. Antibacterial performance and flame retardant performance of tufted carpet are tested by the authoritative organization, bacteriostatic rate is greater than 99.9%, tufted carpets have good anti-mite effect and good flame retardant performance.

scholarly journals Development of a probiotic for animals and aquaculture based on Bacillus toyonensis B-13249 and Bacillus pumilus B-13250 strains

2021 ◽  
Vol 11 (3) ◽  
pp. 393-402
Author(s):  
A. V. Malkova ◽  
I. Yu. Evdokimov ◽  
M. V. Shirmanov ◽  
A. N. Irkitova ◽  
D. E. Dudnik
Keyword(s):  
No Value ◽  
Nutrient Medium ◽  
Bacillus Pumilus ◽  
Ph Value ◽  
Expiry Date ◽  
Maximum Value ◽  
Bacillus Genus ◽  
Number Of Bacteria ◽  
Bacillus Toyonensis ◽  
Selection Of

Abstract: This article aims to develop a probiotic for animals and aquaculture based on the Bacillus toyonensis B-13249 and Bacillus pumilus B-13250 strains. The selection of a nutrient medium was conducted for cultivating the inoculum of these microorganisms. Several bacteria fermentations of the Bacillus genus were performed in biological reactors with a capacity of 15 and 250 l. A technology for obtaining a finished probiotic for animals and aquaculture was developed. The results indicate that L-broth is the most optimal nutrient medium for cultivating the studied strains. The cultivation of B. toyonensis B-13249 and B. pumilus B-13250 strains in fermenters revealed that sporulation begins after 4–8 hours of fermentation. In contrast to the vegetative medium, the fermentative medium helped the bacilli develop a higher optical density (the maximum value in the B. pumilus strain – 2.400±0.149), pH value (maximum value in the B. toyonensis strain – 8.483±0.609) and titer (at least 1010 CFU/g). After 20–24 hours of incubation, both strains of bacilli in the fermenter, almost completely pass into endospores, which serve as a signal for the start of biomass centrifugation. This was indicated by the following: from a 15 l fermenter – 83.3±6.1 g of concentrate, from a 250 l fermenter – 499.8±51.4 g. The number of bacilli in a concentrated state was at least 1·1011 CFU/g for both strains. Obtaining a finished preparation required mixing bacterial concentrates with maltodextrin to a titer of at least 1·1010 CFU/g. The number of bacteria in the preparation checked every month during the year, recorded no value less than 1·1010 CFU/g. Thus, L-broth is most favorable for growing the mother culture of the B. toyonensis B-13249 and B. pumilus B-13250 strains, and fermentative nutrient medium – for the cultivation in fermenters. The expiry date of the bacilli-based biological preparation is at least 12 months, during which the drug’s polycomponence, color and consistency are preserved, in addition to the bacteria titer (at least 1·1010 CFU/g) and their viability.

scholarly journals Investigation of the effect of hydrocinnamic (3-phenylpropanoic) acid on the microbiological corrosion of steel

2020 ◽  
Author(s):  
А.А. Грибанькова ◽  
М.А. Агиевич ◽  
О.А. Евтуховская ◽  
В.В. Гурченко ◽  
С. Чжай ◽  
...  
Keyword(s):  
Electrochemical Impedance ◽  
Ph Value ◽  
Inhibitory Effect ◽  
Bacterial Cells ◽  
Microbiological Corrosion ◽  
Sulfate Reducing ◽  
Corrosion Of Steel ◽  
Reducing Bacteria ◽  
Number Of Bacteria ◽  
Selection Of

В основе работы лежит исследование воздействия органического соединения (ОС) – гидрокоричной (3-фенилпропановой) кислоты на бактериальные клетки СРБ (сульфатредуцирующих бактерий) являющиеся стимуляторами коррозионных процессов. Подбор условий использования и количественная оценка эффективности ингибирующего (биоцидного) действия исследуемого ОС, которое может быть применено для защиты стали от коррозии в средах, содержащих сульфатредуцирующие бактерии. В ходе исследования было изучено влияние ОС на развитие сульфатредуцирующих бактерий и определены такие параметры, как изменение значения pH и окислительно-восстановительного потенциала образцов в среде, численности бактерий и содержания биогенного сероводорода в зависимости от концентрации используемого ОС. Сделаны основные выводы о ингибирующем коррозию и биоцидном действиях испытуемого органического соединения путем оценки скорости коррозии образцов стали и защитном эффекте в зависимости от выбранных концентраций органического соединения методом гравиметрии. Дополнительная оценка ингибирующего действия была проведена методом электрохимической импедансной спектроскопии и методом снятия поляризационных кривых испытуемых образцов. The study is based on the study of the effect of an organic compound (OC) – hydrocinnamic (3-phenylpropanoic) acid on the bacterial cells of SRB (sulfate-reducing bacteria), which are stimulants of corrosion processes. Selection of conditions of use and a quantitative assessment of the effectiveness of the inhibitory (biocidal) action of the studied OC, which can be used to protect steel from corrosion in environments containing SRB. In the course of the study, the effect of OC on the development of SRB was studied and such parameters as the change in the pH value and the redox potential of the samples in the medium, the number of bacteria and the content of biogenic hydrogen sulfide depending on the concentration of the used OC were determined. The main conclusions are drawn about the inhibitory corrosion and biocidal actions of the test OC by assessing the corrosion rate of steel samples and the protective effect depending on the selected concentrations of the OC by gravimetry. An additional assessment of the inhibitory effect was carried out by the method of electrochemical impedance spectroscopy and by the method of taking the polarization curves of the test samples.

scholarly journals Effect of Brewing Water on the Antioxidant Capacity of Green Tea Infusion with DPPH Assay

2022 ◽  
Vol 2022 ◽  
pp. 1-8
Author(s):  
Qing-Qing Cao ◽  
Yan-Qing Fu ◽  
Cheng-Bin Zhang ◽  
Yan Zhu ◽  
Jun-Feng Yin ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Synergistic Effect ◽  
Metal Ions ◽  
Antioxidant Capacity ◽  
Green Tea ◽  
Ph Value ◽  
Major Contributor ◽  
Dpph Assay ◽  
Tea Infusion ◽  
Selection Of

Brewing water plays a crucial role in flavor and potential healthy functions of tea infusion. In this study, seven water samples with different physicochemical properties were selected to brew green tea. Results showed that the brewing water with higher minerals level and pH value would reduce the yield of catechins in tea infusion, which in turn caused the decrease of antioxidant activity to a large extent. Besides, it was found that EGCG, as a major contributor to the antioxidant activity of green tea infusion, was influenced differently by different metal ions, among which Ca2+/Mg2+ could enhance the antioxidant activity of EGCG solutions with different concentration through synergistic effect, particularly Ca2+, and the effect was more markable at a higher EGCG concentration. These results offered theoretical direction to the selection of tea brewing water for consumers and gave a new sight to the effects of metal ions on the antioxidant capacity of EGCG.

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