ASTM D1117 PDF

Nilkis We compare properties of the nonwoven fabrics made with precleaned greige cotton that were blended in different proportions with cotton gin motes and comber noils. The microstructure of cotton fibers allows the penetration of water, in the case of aztm greige cotton nonwovens studied here. The fabric production speed was 5 m per minute. The cellulose-water interactions have been discussed in light of these findings. The three constituent cotton fibers employed in the nonwovens were evaluated for their relative cellulosic crystallinity d relation to their moisture uptake properties. X-ray diffraction patterns asym the three different cotton constituents displayed similar crystalline cellulose compositions.

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Nilkis We compare properties of the nonwoven fabrics made with precleaned greige cotton that were blended in different proportions with cotton gin motes and comber noils. The microstructure of cotton fibers allows the penetration of water, in the case of aztm greige cotton nonwovens studied here.

The fabric production speed was 5 m per minute. The cellulose-water interactions have been discussed in light of these findings. The three constituent cotton fibers employed in the nonwovens were evaluated for their relative cellulosic crystallinity d relation to their moisture uptake properties.

X-ray diffraction patterns asym the three different cotton constituents displayed similar crystalline cellulose compositions.

A quantity of cotton gin mote fibers was also obtained from T. The electrokinetic data presented in Figure 2 includes samples of the cotton blends investigated in this study. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server.

The potential to use greige cotton by-products as an economical source for absorbent nonwoven blends is explored. Cotton and cotton by-products in nonwovens In recent years, the preference to use cotton fibers in nonwoven asmt products has increased. Results and discussion 3. Thus, the increased swelling due to increasing the ratio of UC may be a result of an additive contribution of waxes from the greige cotton, which d expected to contribute hydrophobicity to the fiber surface analogous to more hydrophobic fibers like polyester.

Standard Guide for Evaluating Nonwoven Fabrics Withdrawn This model is contrasted with experimental models, including one based on TEM images of a d swollen cotton fiber to image water-accessible surfaces. The modification was a short increase in the a -axis of the unit cell to 7.

Thus, an increased capacity to hold water is observed as well in the relatively higher absorption capacity of the cotton by-product nonwovens, which have smaller cellulose crystallite size than the greige cotton Table 4. The modification involved using an infrared lamp to dry the materials rather than a laboratory oven as called for in the standard methods.

Nonwoven fabrics made with cleaned greige cotton lint separately blended with comber noils and ginning asttm at The system is equipped with one low water pressure jet head that wets the incoming feed web material on its top face, while two high water pressure jet heads alternatively impact the wetted substrate on either face.

A sample of bleached cotton prepared by similar process was not available for the testing. These test methods cover procedures for testing nonwoven fabrics.

Login to your personal dashboard for more detailed statistics on your publications. Depending on the end-use application, a hydroentangled nonwoven fabric made by using a blend of cotton mote fibers and greige bleach-less cleaned cotton lint gave optimal swelling and reasonably good moisture uptake.

The relationship between crystallinity and moisture uptake has received some attention in the literature over the years December 4th Reviewed: The nonwoven hydroentanglement of greige cotton lint with cotton gin motes and comber noils blends was analyzed for fiber surface polarity, swelling, and absorbance to assess properties with potential usefulness in absorbent nonwovens. In addition, as discussed below, the smaller cellulose crystallite size of the gin motes is consistent with this and plays a role at a molecular level in the increased water aztm capacity observed in the cotton by-product nonwovens.

A subsequent loosening of the fiber cuticle resulting in the exposure of the cellulosic portion of the fiber is evidenced in the SEM image of nonwoven greige cotton shown in Figure 3. The sample is rolled into axtm cylindrical shape, upon itself, and placed in a basket of standardized weight and size. This study has shown that the ability of cotton gin mote fibers to modulate swelling and moisture uptake d beneficial in absorbent products.

The values given in parentheses are for information only and may be approximate. Help us write another book on this subject and reach those readers. TOP Related Articles.

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ASTM D1117 PDF

A number in parentheses indicates the year of last reapproval. Asuperscript epsilon e indicates an editorial change since the last revision or reapproval. The values given in parentheses are for informationonly and may be approximate. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use. Referenced Documents2. Current edition approved Sept. Published December

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ASTM D1117

Arazahn From this state, further water sorption then assumes the character of a capillary-like condensation and has been characterized as free water, i. In order to determine the water content of cotton fibers via Karl Fischer titration KFTfiber samples must be conditioned to standard testing conditions, X-ray diffraction patterns of the three different cotton constituents displayed similar crystalline cellulose compositions. X-ray powder diffraction patterns of comber noil, gin motes, and UltraClean cotton. Thus, the increased swelling due to increasing the ratio of UC may be a result of an additive contribution of waxes from the greige cotton, which are expected to contribute hydrophobicity to the fiber surface analogous to more hydrophobic fibers like polyester. The moisture measurements are based on weight loss qstm are taken with an infrared moisture balance Kett FDmanufactured by Kett Electric Laboratory in Tokyo, Japan. The other method is the recent ASTM Karl Fischer titration method for water content developed for lint cotton, raw and processed. The samples were then encapsulated in the jar right up until testing to maintain the environment.

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