Analyzing the thermal and hygral behavior of wool and its impact on fabric dimensional stability for wool processing and garment manufacturing

2020 ◽  
Vol 90 (19-20) ◽  
pp. 2175-2183
Author(s):  
Qi Zhou ◽  
Wuchao Wang ◽  
Yanyun Zhang ◽  
Christopher J Hurren ◽  
Qing Li
Keyword(s):  
Fiber Diameter ◽  
Natural Fibers ◽  
Wool Fiber ◽  
Weave Structure ◽  
Polymer Relaxation ◽  
Dimensional Property ◽  
Contraction Effect ◽  
Moisture Sensitive ◽  
Wool Processing ◽  
Garment Manufacturing

Wool is one of the most moisture sensitive natural fibers. This paper investigated changes of wool fiber diameter, fabric dimensions and fabric dimensional properties, as a function of moisture regain, temperature and pH. Experiments were conducted on fabrics with different weave structures as well as on fabrics with and without a permanent set. Results showed that the fabrics tended to contract when they were subjected to increased temperature at saturated regain. The degree of contraction appeared to depend on the weave structure of the fabrics and permanent setting treatments. Dimensions of the wool fabrics were also found to be dependent on the pH. Greater fabric dimensions were observed at pH 7.2 than at pH 2.1. The contraction effect was almost reversible when unset fabric samples were measured in pH 2.1. The reasons for the changes of dimensional property were analyzed in terms of changes in wool fiber swelling, yarn crimp and polymer relaxation phenomena with changes in regain, temperature and pH. Industrial implications from outcomes of this research to practical wool processing are discussed in the paper.

Density Weibull Analysis of Pineapple Leaf Fibers (PALF) with Different Diameters

2016 ◽  
Vol 869 ◽  
pp. 384-390 ◽  
Author(s):  
Gabriel Oliveira Glória ◽  
Giulio Rodrigues Altoé ◽  
Pedro Amoy Netto ◽  
Frederico Muylaert Margem ◽  
Fabio de Oliveira Braga ◽  
...  
Keyword(s):  
Fiber Diameter ◽  
Natural Fibers ◽  
Limited Information ◽  
Weibull Analysis ◽  
Synthetic Fibers ◽  
Statistic Method ◽  
Lignocellulosic Fiber ◽  
Large Dispersion ◽  
Dimensional Uniformity ◽  
Different Diameters

Societal, economical, technical and environmental advantages are today justifying the replacement of synthetic fibers by natural fibers. However, natural fibers obtained from plants do not present the same dimensional uniformity. In fact, they show large dispersion of values, as compared to synthetic fibers. In the case of the lignocellulosic fiber extracted from the pineapple leaf, limited information exists regarding the correlation between its properties and dimensional characteristics. In particular, so far, no investigation has been carried out on the influence of the diameter and the density of pineapple fibers. Therefore, the objective of this work was to measure the density of pineapple fibers and to define, by means of the Weibull statistic method, its dependence on the corresponding fiber diameter.

Waterless sterilization and cleaning of sheep wool fiber using supercritical carbon dioxide

2021 ◽  
pp. 004051752110428
Author(s):  
Faisal Aboelkasim Allafi ◽  
Md Sohrab Hossain ◽  
Marwan Shaah ◽  
Japarang Lalung ◽  
Mohd Omar Ab Kadir ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Textile Industry ◽  
Treatment Time ◽  
Wool Fiber ◽  
Morphological Properties ◽  
Whiteness Index ◽  
Wool Processing ◽  
Sheep Wool ◽  
Supercritical Carbon

There is increasing concern regarding the existing sheep wool processing technology in the textile industry owing to the enormous volume of toxic effluents generated. The application of supercritical carbon dioxide (scCO2) in sheep wool processing is cleaner and increases wool fiber production while avoiding toxic effluent generation. scCO2 is a novel clean technology that can be utilized in sheep processing for sterilization, cleaning, and drying sheep wool at the same time. In the present study, scCO2 was used to treat sheep wool with varying pressure, temperature, and treatment time. These parameters influence the scCO2 treatment of sheep wool fiber through the inactivation of microorganisms and improvement of the whiteness index. The identification of bacteria in sheep wool was carried out based on biochemical analysis by molecular means, using 16s rRNA sequencing. It was found that scCO2 completely inactivated the microorganisms present in sheep wool and potentially enhanced the percentage whiteness index at the highest pressure of 30 MPa, temperature of 80°C, and treatment time of 80 min. Several analytical methods were employed to assess the physicochemical, thermal, and morphological properties of untreated and scCO2 treated sheep wool fibers. The results show that scCO2 effectively removes the impurities and completely inactivates the microorganisms present in sheep wool. The findings of the present study reveal that scCO2 can be utilized as an alternative treatment technology for sheep wool processing in the textile industry.

Estimation of genetic parameters for wool fiber diameter measures1

1992 ◽  
Vol 70 (4) ◽  
pp. 1110-1115 ◽  
Author(s):  
N. Y. Iman ◽  
C. L. Johnson ◽  
W. C. Russell ◽  
R. H. Stobart
Keyword(s):  
Genetic Parameters ◽  
Fiber Diameter ◽  
Wool Fiber ◽  
Estimation Of Genetic Parameters

The Effect of pH on Wool Fiber Diameter and Fabric Dimensions

2009 ◽  
Vol 79 (10) ◽  
pp. 953-957 ◽  
Author(s):  
Qing Li ◽  
Peter Rex Brady ◽  
Xungai Wang
Keyword(s):  
Fiber Diameter ◽  
Wool Fiber ◽  
Effect Of Ph

scholarly journals Serat Pelepah Sagu Sebagai Alternatif Pengganti Serat Sintesis Fiberglass

2021 ◽  
Vol 6 (1) ◽  
pp. 14
Author(s):  
Budiawan Sulaeman ◽  
Rakhmawati Natsir
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Composite Material ◽  
Glass Fiber ◽  
Fiber Diameter ◽  
Natural Fibers ◽  
Fiber Volume ◽  
Synthetic Fibers ◽  
Matrix Volume ◽  
Naoh Solution

Tujuan penelitian ini untuk menganalisis pengaruh ukuran besar diameter serat pelepah sagu terhadap sifat mekanik kekuatan tarik, menganalisis sifat mekanik tarik material komposit yang diperkuat serat pelepah sagu.Berdasarkan hasil penelitian; (1). Larutan NAoH berpengaruh terhadap kuat Tarik specimen, hal ini ditunjukkan pada 2,5% (NAoH terhadap H2O). Nilai kekuatan tariknya 49,486 N/mm2. (2). Serat pelepah sagu kuat tariknya jauh dibawah serat gelas. (48,435 N/mm2< 323 N/mm2). Hal ini disebabkan rongga yang terdapat di serat sintesis lebih rapat dibanding serat alami. (3). Berdasarkan variabel yang diteliti, kekuatan tarik (Ftu) dengan nilai tertinggi terjadi pada komposit (volume 85% matriks : 15% serat) yaitu sebesar 3,12 beban 11824 N. (4). Kekuatan tarik mengalami kenaikan terhadap peningkatan komposisi volume serat. (5). Spesimen uji yang mengalami regangan dan patah pada titik load yaitu pada komposisi volume 85% matriks : 15% serat sebesar 3,12 MPa dengan regangan sebesar 8% dan modulus young yang terjadi sebesar 38,615  MPa.The purpose of this study was to analyze the effect of the size of the sago frond fiber diameter on the mechanical properties of the tensile strength, to analyze the tensile mechanical properties of the composite material reinforced by sago frond fibers. Based on research results; (1) NaOH solution affects the tensile strength of the specimen. This is shown at 2.5% (NaOH to H2O), the tensile strength value is 49.486 N/mm2. (2) Sago frond fiber has a tensile strength far below the glass fiber (48,435 N/mm2 <323 N/mm2). This is because the cavities in synthetic fibers are denser than natural fibers. (3) Based on the variables studied, the tensile strength (Ftu) with the highest value occurs in the composite (85% matrix volume: 15% fiber), which is 3.12 load 11824 N. (4) Tensile strength increases with the increase in fiber volume composition. (5) The test specimens that experienced a strain and fracture at the load point, namely the composition of volume 85% matrix: 15% fiber was 3.12 MPa with a strain of 8% and the modulus young that occurred was 38.615 MPa.

scholarly journals Steam Explosion Impact to Technical Hemp Fiber Diameter

2015 ◽  
Vol 1 ◽  
pp. 112
Author(s):  
Laima Grāve ◽  
Anna Putniņa ◽  
Silvija Kukle ◽  
Veneranda Stramkale
Keyword(s):  
Mechanical Properties ◽  
Natural Products ◽  
Steam Explosion ◽  
Fine Particles ◽  
Fiber Diameter ◽  
Natural Fibers ◽  
Optical Microscope ◽  
Alkaline Pretreatment ◽  
Diameter Measurement ◽  
Hemp Fiber

Microfibers and nanofibers from natural products have high mechanical properties. For this reason researchers pay particular attention to the natural fibers and to the method how they are obtained. In the research samples with different treatments (alkaline pretreatment, steam explosion and water extraction) were investigated to evaluate treatment influence on fiber diameters. Fractionation does not provide actual results of fibers diameter as thinner fibers agglomerate to each other and around thicker fibers and cannot be sieved. Fiber diameter measurement with an optical microscope shows that pretreatment and treatment reduced the thickest fiber percentage and increase the number of fine particles. Dew-retted hemp gives 16% of thicker fibers and only 39% fibers with a diameters less than 63µm. 50% of alkaline pretreated and steam explosion treated fibers diameters are less than 63 µm and only 8% of diameters fall in range 160 - 630 µm.

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