Cotton Fiber Properties Research Articles

Identification of cotton fiber quality quantitative trait loci using intraspecific crosses derived from two near-isogenic lines differing in fiber bundle strength

Cotton fiber properties are very important to the yarn quality. Modern high-speed textile operations around the world require long, strong and fine cotton fibers. The objective of this research was to identify stable fiber quantitative trait loci (QTLs) that could be used in cotton breeding through marker-assisted selection (MAS). Two cotton lines, MD90ne and MD52ne, are near-isogenic with significant differences in fiber properties, especially strength. Fiber samples from 734 progeny plants of two F2 populations (A and B) derived from crosses between MD90ne and MD52ne were collected at Stoneville, MS, USA in 2012. Fiber quality attributes were measured using a High Volume Instrument 1000. A simple sequence repeat (SSR) genetic linkage map with 165 loci covering 632.53 cM was constructed using population A, consisting of 356 F2 individuals and used for identifying QTLs related to fiber bundle strength (FBS), short fiber index (SFI) and upper-half mean fiber length (UHML). One QTL for FBS originating from the stronger fiber parent MD52ne was identified on chromosome (Chr.) 3. Three QTLs each for SFI and UHML were identified on Chrs. 3, 4 and 14 and Chrs. 3, 11 and 24, respectively. Population B, consisting of 378 F2 progeny, was used to confirm these QTLs by analyzing 57 SSR markers mapped on Chrs. 3, 14 and 24. Three QTLs—qFBS-c3, qSFI-c14 and qUHML-c24—were confirmed and appeared stable. These three QTLs could potentially be used in breeding to improve cotton fiber quality through a MAS strategy.

Electrical and optical properties of air-stable, iodine-doped natural cotton fibers

The influence of sodium-hydroxide treatment and iodine doping on the optical and the electrical properties of cotton fibers is investigated by using photoluminescence (PL), as well as photoconductivity, measurements. The iodine doping results in a quenching of the PL and an enhancement of the photoconductivity due to the photo-induced charge transfer between the dopants and the cotton fibers. The conductivity of the iodine-doped cellulose fibers shows a significant enhancement by more than five orders of magnitude as compared to that of the undoped samples. A good correlation is found between the changes in the fiber’s morphology and the electrical and optical properties of the fiber, which opens interesting perspectives for molecular donor-acceptor device applications.

Effect of Supplemental Irrigation and Graded Levels of Nitrogen on Cotton Yield and Quality

Effects of supplemental irrigation and graded levels of nitrogen (N) on cotton yield and fiber quality were investigated in the Mississippi Delta in 2011 and 2012. Cotton was planted in 48 experimental plots with irrigation as main treatment unit and N application rate (0, 39, 67, 101, 135, and 168 kg ha -1 ) as subunit. Supplemental irrigation was conducted based on soil-water sensor measurements. Cotton yield was determined using a boll buggy equipped with load cells. Cotton samples were collected and ginned, and the fiber quality was evaluated. Statistical analyses on the effects of irrigation and leaf N on the yield and fiber quality indicated that compared with non-irrigated cotton, the irrigated cotton increased seed cotton yield by 14%. Leaf N content varied in a range of 3.27% to 5.86% with an average of 4.34%. Leaf N of irrigated plants was 9.0% and 3.6% higher than that of the non-irrigated plants in 2011 and 2012, respectively. Soil water stress had a negative effect on N uptake of cotton plants. Yield showed a positive linear correlation with leaf N content in both irrigated and non-irrigated plots. Irrigation improved fiber quality, including all fiber length parameters. Upper half mean length (UHML) of cotton fiber in irrigated treatment was 2.7% and 1.8% greater than that in the non-irrigated treatment in 2011 and 2012, respectively. Micronaire decreased, and neps and yellowness increased with the increase of leaf N under irrigated and non-irrigated conditions. Excessive application of N would not be beneficial to fiber quality and could possibly create negative impact on some properties of cotton fibers.

Transitional Properties of Cotton Fibers from Cellulose I to Cellulose II Structure

Mercerized fibers were prepared from native cotton fabrics via NaOH solution treatment at different concentrations. Mercerization led to transformation of the crystal structure of cotton fibers from cellulose I to II when the NaOH concentration was greater than 10 wt%. In addition, the cotton fibers were converted into a swollen and rough state after mercerization treatment. The results of Fourier transform infrared spectrometry and wide-angle X-ray diffraction indicated that the cellulose molecular structure changed (e.g. the degree of disorder of O-H stretching vibration increased, while the crystallinity index decreased) in the process of mercerization. Thermogravimetric analysis determined that the cellulose II fibers were more thermally stable than the cellulose I fibers. The mechanical properties of cellulose fiber-reinforced polyethylene oxide (PEO) composites showed that both original and mercerized cotton fibers enhanced the tensile strength of the PEO matrix. These properties directly contributed to the advantages of mercerized textile products (e.g. higher luster, holds more dye, more effectively absorbs perspiration, and tougher under different washing conditions).

Multifunctionalization of cotton through in situ green synthesis of silver nanoparticles

A convenient method for in situ synthesis of silver nanoparticles was developed to realize the multifunction of cotton. The silver nanoparticles were obtained through reduction of silver ions by cotton under basic condition at room temperature. The as-synthesized silver nanoparticles achieved the coloration of cotton fibers. Heating increased the color strength of cotton fibers with silver nanoparticles. Mercerization treatment as a common finishing process enhanced the properties of cotton fibers modified by silver nanoparticles. The mercerized cotton exhibited brighter color and had very good colorfastness to washing. The cotton fibers treated with in situ synthesized silver nanoparticles possess strong antibacterial activity with excellent washing durability.

Fiber and Yarn Properties from High-Speed Roller Ginning of Upland Cotton

<abstract><title><italic>Abstract. </italic></title> Selective breeding has improved upland cotton fiber properties. New high-speed roller ginning technology has advanced to the point that processing capacities have approached that of saw ginning. Producers seeking a better price for their upland cotton are interested in fiber property and textile mill performance data comparing cultivars processed by both saw and roller ginning. Three diverse cultivars, one of them stripper-harvested, were processed by saw ginning, conventional roller ginning, and high-speed roller ginning, with different levels of lint cleaning appropriate to each treatment. Samples were submitted for HVI and AFIS fiber property analysis. Ring-spun yarn from each treatment was tested. Results showed that the roller gin (conventional and high speed) produced fiber that was longer, more uniform, had less short fiber, and fewer neps than the saw gin stand. Turnout, color grade, and leaf were not different among gin stand type. With respect to yarn properties, the conventional/high-speed roller gin had fewer thick places, but was higher in vegetable and foreign dark matter (contaminants), seed coats, and neps. The composition of neps changed as fiber was processed into yarn. The conventional/high-speed roller gin had fewer raw stock and card mat neps than the saw gin stand, but more neps in finished yarn. Differences among cultivar were prevalent throughout the study. In addition to differences in length, strength, and immature fiber content, the cultivar that was stripper harvested had double the trash content at harvest. There were differences in most fiber properties, but not yarn properties, among lint cleaner type. Roller gin lint cleaning was less aggressive than saw-type lint cleaning and had longer fiber, better uniformity, and fewer neps. Saw-type lint cleaning had better color and leaf grades, and less lint trash. There was no appreciable difference between the two types of roller gin lint cleaning used, but one saw-type lint cleaner as opposed to two was less damaging to the fiber. Although roller ginned upland cotton is a niche market, textile mills value the higher quality obtained from roller ginning. Newer upland cultivars may make roller ginning a viable option in parts of the Unites States where roller ginning has not been available previously.

Study on properties of modified nano-TiO2 and its application on antibacterial finishing of textiles

The dispersion property of modified nano-TiO2 particles and its antibacterial properties on cotton fabrics were studied. The nano-TiO2 particles were modified with reactive groups (such as hydroxyl groups, amino groups and silica groups). The modified nano-TiO2 particles were characterized by particle size analyzer, Fourier transform-infrared spectroscopy and transmission electron microscopy. Besides, the chemical load technology of optimizing the nano-TiO2 on the textile fiber combined with fiber by grafting and cross-linking was studied. The results showed that the stability of nano-TiO2 sol was related to the concentration of the modifier and the pH values of the system. The washing fastness and the antibacterial property of the fabric treated by modified nano-TiO2 had been increased and the antibacterial property of treated fabric was also related to the concentration of the modifier. By determining the fiber’s crystallinity, as well as the fabric’s breaking strength and tear strength, the influence of the modified nano-TiO2 photocatalyst on the structural properties of cotton fiber was discussed.

Multi Objective Optimization of Yarn Quality and Fibre Quality Using Evolutionary Algorithm

The quality and cost of resulting yarn play a significant role to determine its end application. The challenging task of any spinner lies in producing a good quality yarn with added cost benefit. The present work does a multi-objective optimization on two objectives, viz. maximization of cotton yarn strength and minimization of raw material quality. The first objective function has been formulated based on the artificial neural network input–output relation between cotton fibre properties and yarn strength. The second objective function is formulated with the well known regression equation of spinning consistency index. It is obvious that these two objectives are conflicting in nature i.e. not a single combination of cotton fibre parameters does exist which produce maximum yarn strength and minimum cotton fibre quality simultaneously. Therefore, it has several optimal solutions from which a trade-off is needed depending upon the requirement of user. In this work, the optimal solutions are obtained with an elitist multi-objective evolutionary algorithm based on Non-dominated Sorting Genetic Algorithm II (NSGA-II). These optimum solutions may lead to the efficient exploitation of raw materials to produce better quality yarns at low costs.

Preliminary examination of the effects of relative humidity on the fracture morphology of cotton flat bundles

A preliminary examination of the effects of relative humidity (RH) of three testing conditions on cotton fiber fracture morphology is presented herein. In addition, measurements of fiber moisture content, stelometer cotton flat bundle strength and elongation were collected at the three testing conditions. A general trend is observed for moisture content, strength and elongations measurements; testing in conditions with higher RH generally resulted in a progressive increase in moisture content, strength and elongation values. The morphology of broken fibers was also affected by the testing conditions. Fibers broken at high RH (i.e. 70 ± 2°F and 80 ± 2% RH) showed a more frayed fracture where microfibril separation, a fracture pattern that suggests independent microfibril failure, was evident. In contrast, at standard conditions (i.e. 70 ± 2°F and 65 ± 2%), fiber fractures were more granular (clean fractures), a reflection of a more unilateral breaking action. At low RH (i.e. 70 ± 2°F and 50 ± 2%), fiber fractures exhibited a distorted granular pattern, with extended fracture breaks that did not exhibit microfibril separation. Our preliminary findings are of relevance to post-harvest moisture control efforts currently employed in industry and may contribute to larger efforts to understand the effects of the fracture and damage observed in cotton fiber properties.

Relationship between SSR- Based Molecular Marker and Cotton F&lt;SUB&gt;1&lt;/SUB&gt; Inter Specific Hybrids Performance for Seed Cotton Yield and Fiber Properties

Knowledge of genetic diversity and relationships among breeding materials has a significant impact on crop improvement. Association between parental divergence and progeny performance has not been well documented in cotton ( Gossypium hirsutum L.). The objectives of this study were to estimate genetic diversity among selected cotton genotypes on the basis of simple sequence repeat (SSR) markers, and to investigate the relationship between genetic diversity and F 1 population performance and heterosis.The present study was conducted to investigate the relationship between parents molecular marker diversity and inter specific hybrids of cotton to evaluate the hybrid performance and heterosis using molecular markers. Twenty eight F 4 lines of ( Gossypium barbadense L.) were crossed with the four common diverse testers ( Gossypium hirsutum L.) viz., DH 98-27 (T 1 ), ZCH8 (T 2 ), 178-24 (T 3 ) and DH 18-31 (T 4 ) to produce 112 F 1 inter specific hybrids during 2010. These 112 F 1 hybrids, their F 5 barbadense lines with 4 hirsutum testers and ruling commercial check (MRC6918 and DCH32) were evaluated for yield and fiber quality traits and sown during kharif 2011 at University of Agricultural Sciences, Dharwad, India. Genetic distances (GD) among the parents were calculated from 40 microsatellite marker data, and their correlation with hybrid performance and heterosis were analysed. The dendrogram constructed from the pooled data revealed three distinct clusters. One cluster involved testers and other clusters showed all lines were placed which are already having proven record in giving good hybrids. The similarity coefficient values between the line DB 533 x DB 534 F 4 IPS 49 and the tester DH 98-27 showed 67%. It revealed that DB 533 x DB 534 F 4 IPS 49 was closely related to DH 98-27 with 67% similarity between parents. The hybrid between DB 533 x DB 534 F4 IPS 49 and DH 98-27 exhibited the highest yield of 2884.26 kg/ha. Similarity coefficient (88%) value between lines and testers showed between the line DB 533 x DB 534 F 4 IPS 52 and the tester ZCH8, the hybrid between these recorded an yield of 2040.757 kg/ha. Lowest similarity coefficient value was noticed between the line DB 533 x DB 534 F 4 IPS 16 and tester DH 98-27 which revealed that they are far distinct from each other. This combination exhibited 2384.62 kg/ha yield. Genetic distance (GD) ranged from 0.041 to 0.429, with an average of 0.183. The result implied that each cluster dendrogram substantially reflected its own genetic relationship among parents. Overall, a low significant correlation of GD with hybrid performance and heterosis was detected in Table 2~6. Highly significant positive correlation were found between genetic distance (GD) and ginning outturn for F 1 performance (0.277) and heterosis over MRC 6918 (0.279) and DCH 32 (0.279), while significant positive correlation were found between genetic distance (GD) and ginning outturn for mid parent heterosis (0.237). Highly significant positive correlation were found between genetic distance (GD) and seed cotton yield for F 1 performance (0.359) and heterosis over Bt check MRC 6918 (0.336) and over non Bt check DCH 32 (0.362), while significant positive correlation were found between genetic distance (GD) and seed cotton yield for mid parent heterosis (0.226). Significant positive correlation were found between genetic distance (GD) and lint index for mid parent heterosis (0.227), F 1 performance (0.251) and heterosis over MRC 6918 (0.250) and DCH 32 (0.250), while significant positive correlation were found only between genetic distance (GD) and fiber micronaire value for F 1 performance (0.241).

Comparative Study on Mechanical Properties of Jutecell, Cotton and Bamboo Fiber Knitted Fabrics 20

In order to have a better understanding and using of the new type of regenerated flax fiber –Jutecell, Mechanical properties of three kinds of fabrics which knitted by Jutecell, cotton and bamboo fiber were tested, focusing on the stretching, bursting, abrasion-resistant and anti-pilling properties, through the comparison and analysis of the three kinds of fabrics, the results shown that: The strength of Jutecell fabric is the best, followed by regenerated bamboo fiber, natural cotton fibre is the worst. The stretching, bursting and abrasion-resistant of the fabrics knitted by Jutecell yarn are all better than that of the cotton and bamboo fiber knitted fabrics; but its anti-pilling performance is poor, a appropriate measure must be taken in the production process to reduce the pilling phenomenon of clothes made by Jutecell yarns.

Study of aspects of the changes in several properties of cotton fibers during moistening

A study is made of the effects of the moisture content of cotton fibers on their frictional, dielectric, and strength characteristics. It is established that the paths of the curves of equations obtained to describe these effects are related to changes in the structural-relaxational state of cotton cellulose and the presence of different forms of sorbed moisture.

Functional hybrid materials derived from natural cellulose

In this paper, we report a study on the optical and the electrical properties of pure cotton fibers (CF) from chemically surface- and morphology-modified samples coated with poly [2-methoxy-5-(2-ethylhexyloxy)-1, 4-phenylenevinylene] (MEH-PPV) polymer by using a dip-coating method. The properties of the treated and coated fibers were characterized by using scanning electron microscopy (SEM), luminescence and I–V characteristics. The performance of fibers with MEH-PPV polymer as a coating component was investigated, and an excellent white-light emission that consisted of blue-, green-, and red-light-emitting bands was demonstrated. The I–V characteristics of sandwich-type devices consisting of successive layers of ITO (Indium doped tin oxide coated glass)-PEDOT-PSS (Poly(3,4-ethylenedioxythiophene)-Poly(styrenesulfonate)-CF/MEH-PPV-Ag showed that upon light illumination, the current increased in both the forward and the reverse bias conditions which suggest that the photoresponse parameters for the heterojunction are better than they are for the composite alone.

Relationships of cotton fiber properties to ring-spun yarn quality on selected High Plains cottons

Cotton fiber properties play an important role in determining spinning performance but explain only a portion of the variability in final yarn quality parameters. This research investigates relationships between ring-spun yarn quality and fiber properties (measured using the High Volume Instrument (HVI) and Advanced Fiber Information System (AFIS)) given additional information on harvest method and cultivar. Seventy-six samples of commercially grown cotton representing five cultivars from six locations across the Texas High Plains were collected over three years. Carded 14.5 tex (40 Ne) ring-spun yarns were produced and tested for various yarn quality characteristics. Principal component analysis and partial least squares regression were used to determine relationships between fiber and yarn properties. Neither harvest method nor cultivar explained a significant portion of yarn quality variability beyond that captured by HVI and AFIS results. Yarn work-to-break was highly correlated to fiber bundle elongation, which is not currently reported in official cotton classing reports.

Structure and properties of tempo-oxidized cotton fibers

In this paper, the influence of the catalytic oxidation using water soluble and stable nitroxyl radical 2,2?,6,6?-tetramethylpiperidine-1-oxyl (TEMPO) on structure and properties of cotton fibers was studied. In particular, the selective TEMPO-mediated oxidation has become very interesting way for introduction of functional groups into cellulose fibers with the aim to obtain oxycellulose fibers with specific properties. Unmodified and modified fibers were characterized in terms of weight loss values, introduced functional groups and crystallinity index. Also, oxidized fibers were characterized in terms of the sorption, morphological, and physico-mechanical properties. The TEMPO-oxidized cotton fibers show a minimum increase of fineness (from 1.32 to 1.28 dtex) and increase of crystallinity index (up to 91.9%), while the tensile strength of fibers decreases (up to 10.82 cN/tex). By the TEMPO-mediated oxidation of cotton fibers significant amount of carboxyl groups (up to 0.795 mmol/g cell) can be introduced into cellulose fibers. Introduced hydrophilic carboxyl groups increases the sorption properties of oxidized fibers, that can be used directly or for further chemical modification.

Cloning and characterization of homeologous cellulose synthase catalytic subunit 2 genes from allotetraploid cotton (Gossypium hirsutum L.)

Cellulose synthase catalytic subunits (CesAs) are the catalytic sites within a multisubunit complex for cellulose biosynthesis in plants. CesAs have been extensively studied in diploid plants, but are not well characterized in polyploid plants. Gossypium hirsutum is an allotetraploid cotton species producing over 90% of the world's cotton fibers. Although G. hirsutum CesAs (GhCesAs) are responsible for cellulose production in cotton fiber, very limited numbers of GhCesA genes have been identified. Here, we report isolating and characterizing a pair of homeologous CesA2 genes and their full-length cDNAs from allotetraploid cotton. The GhCesA2-AT gene from the A-subgenome and GhCesA2-DT gene from the D-subgenome were screened from a G. hirsutum BAC library. These genes shared 92% sequence similarity throughout the entire sequence. The coding sequences were nearly identical, and the deduced amino acid sequences from GhCesA2-AT (1,039 amino acids) and GhCesA2-DT (1,040 amino acids) were identical except four amino acids, whereas the noncoding sequences showed divergence. Sequence analyses showed that all exons of GhCesA2-AT contained consensus splice donor dinucleotides, but one exon in GhCesA2-DT contained nonconsensus splice donor dinucleotides. Although the nonconsensus splice donor dinucleotides were previously suggested to be involved in alternative splice or pseudogenization, our results showed that a majority of GhCesA2-AT and GhCesA2-DT transcripts consisted of functional and full-length transcripts with little evidence for alternative mRNA isoforms in developing cotton fibers. Expression analyses showed that GhCesA2-AT and GhCesA2-DT shared common temporal and spatial expression patterns, and they were highly and preferentially expressed during the cellulose biosynthesis stage in developing cotton fibers. The observations of higher expression levels of both GhCesA2-AT and GhCesA2-DT in developing fibers of one near-isogenic line (NIL) with higher fiber bundle strength over the other NIL with lower fiber bundle strength suggested that the differential expression of genes associated with secondary cell wall cellulose biosynthesis in developing fiber might affect cotton fiber properties.

Radiation synthesis of silver nanostructures in cotton matrix

Cotton is one of the most popular natural fibres, composed mainly of cellulose, which finds a wide range of applications in paper, textile and health care products industry. Researchers have focused their interest on the synthesis of cotton nanocomposites, which enhances its mechanical, thermal and antimicrobial properties by the incorporation of various nanoparticles into the cotton matrix. Silver is one of the most popular antimicrobial agents with a wide spectrum of antibacterial and antifungal activity that results from a complex mechanism of its interactions with the cells of harmful microorganism. In this work, electron beam radiation was applied to synthesise silver nanostructures in cotton fibres. Investigations of the influence of the initial silver salt concentration on the size and distribution of the obtained silver nanostructures were carried out. A detailed characterisation of these nanocomposites with SEM-BSE and EDS methods was performed. TGA and DSC analyses were performed to assess the influence of different size silver nanoparticles and the effect of electron beam irradiation on the thermal properties of cotton fibres. A microbiological investigation to determine the antibacterial activity of Ag-cotton nanocomposites was carried out.

Organic photodiodes on the base of cotton fibers/polymer composite

In this paper, we report a study on the optical and electrical properties of pure cotton fibers from chemically surface and morphology modified and coated with poly [2-methoxy-5-(2-ethylhexyloxy)-1, 4-phenylenevinylene] (MEH-PPV) polymer samples by the dip-coating method. The treated and coated fibers properties were characterized by using scanning electron microscopy (SEM), photoluminescence, and I–V characteristics. The performance of fibers with the MEH-PPV polymer as a coating component was investigated and an excellent white-light emission which consists of blue-, green-, and red-light-emitting bands was demonstrated. I–V characteristics of the sandwich-type devices consisting of successive layers of ITO–PEDOT-PSS- CF/MEH-PPV–Ag show that upon light illumination the current increases in both the forward and reverse bias conditions which suggest that the photoresponse parameters for the heterojunction are better than the composite alone.

Two‐way prediction of cotton yarn properties and fiber properties using multivariate multiple regression

This paper explains the feasibility of two‐way prediction by developing direct models relating fiber to yarn and reverse models relating yarn to fiber using multivariate methods simultaneously. These models evaluate the dependencies of cotton yarn properties on fiber properties and vice versa with minimum random errors and maximum accuracy. To this end, cotton fiber properties were measured from rovings carefully untwisted. An HVI system and an evenness tester of premier were used to measure the various properties. The samples of cotton yarns (108 samples) produced yarn counts ranging from 16 to 32 Ne with optimum twist factor. In this study, effective variables were selected by multivariate statistical test (m‐test). Then, multivariate analysis of variance (MANOVA) was used for evaluating the significance of obtained models. Next, the optimal separate equations were determined through multivariate multiple regression. After solving the linear equation system, a reverse model was achieved. By selecting fiber properties and machine factors as appropriate variables, the relative importance of these factors was also investigated. The results showed that the obtained equations were significant at the significance level α = 0.01.

Wireless-and-GPS system for cotton fiber-quality mapping

A system including wireless-communication and GPS technologies was designed, constructed and field tested to enable site-specific crop management in cotton production in the form of fiber-quality mapping. The system is comprised of three functional sub-systems associated with the three machines typically used in cotton harvesting: harvester, boll buggy and module builder. Harvest area for a basket load of cotton is recorded with GPS, and the module into which a basket is dumped is tracked through wireless communication among the sub-systems. In three field tests, the system was easily installed on equipment and performed as designed. Fiber-quality maps were produced by combining the GPS-based module area data collected during harvest with bale-level fiber-quality data measured at a cotton classing office after ginning. Statistical analysis showed significant differences in most cotton fiber properties among mapped modules, and spatial trends were identified. The system provides a useful tool for studying spatial variability in cotton fiber quality.