scholarly journals UV Treatments on Cotton Fibers

10.5772/63796 ◽  
2016 ◽  
Author(s):  
Franco Ferrero ◽  
Gianluca Migliavacca ◽  
Monica Periolatto
Keyword(s):  
Cotton Fibers

Microstructure and physical properties of composite nonwovens produced by incorporating cotton fibers in elastic spunbond and meltblown webs for medical textiles

2021 ◽  
pp. 152808372110042
Author(s):  
Partha Sikdar ◽  
Gajanan S Bhat ◽  
Doug Hinchliff ◽  
Shafiqul Islam ◽  
Brian Condon
Keyword(s):  
Tensile Strength ◽  
Physical Properties ◽  
Composite Structures ◽  
High Surface ◽  
High Surface Area ◽  
Barrier Properties ◽  
Cotton Fibers ◽  
Adult Care ◽  
Medical Textiles ◽  
Improved Performance

The objective of this research was to produce elastomeric nonwovens containing cotton by the combination of appropriate process. Such nonwovens are in demand for use in several healthcare, baby care, and adult care products that require stretchability, comfort, and barrier properties. Meltblown fabrics have very high surface area due to microfibers and have good absorbency, permeability, and barrier properties. Spunbonding is the most economical process to produce nonwovens with good strength and physical properties with relatively larger diameter fibers. Incorporating cotton fibers into elastomeric nonwovens can enhance the performance of products, such as absorbency and comfort. There has not been any study yet to use such novel approaches to produce elastomeric cotton fiber nonwovens. A hydroentangling process was used to integrate cotton fibers into produced elastomeric spunbond and meltblown nonwovens. The laminated web structures produced by various combinations were evaluated for their physical properties such as weight, thickness, air permeability, pore size, tensile strength, and especially the stretch recovery. Incorporating cotton into elastic webs resulted in composite structures with improved moisture absorbency (250%-800%) as well as good breathability and elastic properties. The results also show that incorporating cotton can significantly increase tensile strength with improved spontaneous recovery from stretch even after the 5th cycle. Results from the experiments demonstrate that such composite webs with improved performance properties can be produced by commercially used processes.

Natural Biomass Hydrogel Based on Cotton Fibers/PVA for Acid Supercapacitors

2021 ◽  
Author(s):  
Zhixing Zhao ◽  
Yun Huang ◽  
Wenhao Ren ◽  
Ling Zhao ◽  
Xing Li ◽  
...  
Keyword(s):  
Cotton Fibers

Comfort Properties of Medical Compression Stockings from Biodesigned and Cotton Fibers

2021 ◽  
Author(s):  
Ferid Kırcı ◽  
Ecem Karamanlargil ◽  
Sena Cimilli Duru ◽  
Banu Nergis ◽  
Cevza Candan
Keyword(s):  
Cotton Fibers ◽  
Compression Stockings ◽  
Medical Compression Stockings

Image-based Bilateral Beard Method for measuring weight-based short fiber contents in raw cotton and semi-finished slivers

2021 ◽  
pp. 004051752199746
Author(s):  
Chenhong Lang ◽  
Mingming Zhang ◽  
Tingrong Wang ◽  
Jingye Jin ◽  
Fumei Wang ◽  
...  
Keyword(s):  
Error Rate ◽  
Weight Ratio ◽  
Short Fiber ◽  
Variable Coefficients ◽  
Cotton Fibers ◽  
Specimen Preparation ◽  
Altman Analysis ◽  
Fiber Number ◽  
Number Curve ◽  
Good Agreement

In this paper, an economical way for accurately determining weight-based short fiber contents in raw cotton and semi-finished slivers by utilizing special bilateral beard specimens and image processing was introduced. In the specimen preparation, cotton fibers were drawn by a manual device into a sliver, then the sliver was combed to form a bilateral beard specimen, and finally the bilateral beard was scanned to generate a grayscale image from which a relative fiber number curve was extracted. An algorithm for calculating the weight-based short fiber contents based on the curve was proposed. Five types of cottons were repetitively measured to investigate the robustness of the results of [Formula: see text] and [Formula: see text], with the weight ratio of fibers shorter than 12.7 and 16 mm, respectively. The results showed that measuring two bilateral beards for each sample could keep the error rate lower than 15%, while four specimens kept the error rate lower than 10%. Compared with AFIS Pro 2, this Image-based Bilateral Beard Method provided results with lower standard deviations and variable coefficients, signifying its analogous or better robustness. In addition, 37 samples from some of the world’s major producing areas were measured by this method and AFIS Pro 2, and a Bland–Altman analysis confirmed a good agreement between the results from the two methods. As only a manual fiber drawing device and an office scanner are needed, this Image-based Bilateral Beard Method is clearly a cheap approach for accurately determining the short fiber contents in raw cotton and semi-finished slivers.

scholarly journals Relationship between the real contact behavior and tribological characteristics of cotton fabric

Friction ◽  
2020 ◽  
Author(s):  
Rongxin Chen ◽  
Jiaxin Ye ◽  
Wei Zhang ◽  
Jiang Wei ◽  
Yan Zhang ◽  
...  
Keyword(s):  
Friction Coefficient ◽  
Contact Area ◽  
Dynamic Change ◽  
Tribological Characteristics ◽  
Real Contact Area ◽  
Cotton Fibers ◽  
Friction Behavior ◽  
Contact Behavior ◽  
The Real ◽  
Real Contact

Abstract The tribological characteristics of cotton fibers play an important role in engineering and materials science, and real contact behavior is a significant aspect in the friction behavior of cotton fibers. In this study, the tribological characteristics of cotton fibers and their relationship with the real contact behavior are investigated through reciprocating linear tribotesting and real contact analysis. Results show that the friction coefficient decreases with a general increase in load or velocity, and the load and velocity exhibit a co-influence on the friction coefficient. The dynamic change in the real contact area is recorded clearly during the experiments and corresponds to the fluctuations observed in the friction coefficient. Moreover, the friction coefficient is positively correlated with the real contact area based on a quantitative analysis of the evolution of friction behavior and the real contact area at different loads and velocities. This correlation is evident at low velocities and medium load.

Polylactide composites with waste cotton fibers: Thermal and mechanical properties

2013 ◽  
Vol 35 (4) ◽  
pp. 747-751 ◽  
Author(s):  
Klaudia Piekarska ◽  
Ewa Piorkowska ◽  
Nelli Krasnikova ◽  
Piotr Kulpinski
Keyword(s):  
Mechanical Properties ◽  
Cotton Fibers ◽  
Thermal And Mechanical Properties

scholarly journals Micromycetes-resistant colored cotton is promising material to reduce mycotoxins amounts in textiles

2020 ◽  
Vol 164 ◽  
pp. 06015
Author(s):  
Kseniia Illarionova ◽  
Sergey Grigoryev
Keyword(s):  
Upland Cotton ◽  
Federal District ◽  
Cotton Fibers ◽  
Rhizopus Nigricans ◽  
Aspergillus Ustus ◽  
Cotton Plants ◽  
Colored Cotton ◽  
Penicillium Aurantiogriseum ◽  
The Mean ◽  
White Cotton

The aim of research was to characterize epiphyte micromycetes observed on variable cotton fibers accessions, to estimate the range of fiber destruction and select cotton, which were the most resistant to fungus damage. The accessions of differently colored Upland Cotton varieties (Gossypium hirsutum L.) evaluated: eleven cotton of natural green, twelve – of brown and eleven of conventional white color. Cotton plants have been grown in Sothern Federal District, RF. The fiber samples for the study were placed into a thermostat in sterile Petri dishes on moistened filter paper in order to stimulate the development of mycelium or sporulation of fungi naturally occurred on fibers. Incubation carried out in a thermostat at a +24-28 °C, humidity of 90-100% and exposed for 28 days. The samples examined with a microscope or binocular magnifier. Aspergillus ustus (Bainier), A. fumigatus Fresen., A. niger v. Tiegh., A. flavus Link, Penicillium aurantiogriseum Dierckx, P. notatum Westling, Rhizopus nigricans Ehrenb. and Alternaria alternata (Fuier) Keissler were detected. Compared with exposed white, accession of green and brown colors were significantly resistant to fungus. The mean of destruction (K) of white cotton varied up to 0.95, but colored accessions not exceeded 0.3 (initial destruction of the surface, not affecting internal fiber’s structure).

X-Ray Orientation Measurements of Cotton Fibers Using Yarn Samples

1981 ◽  
Vol 51 (11) ◽  
pp. 722-724 ◽  
Author(s):  
A.R. Kalyanaraman
Keyword(s):  
Cotton Fibers ◽  
X Ray
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