ASTM D1464-07
(Test Method)Standard Test Method for Differential Dyeing Behavior of Cotton
Standard Test Method for Differential Dyeing Behavior of Cotton
SIGNIFICANCE AND USE
This test method is not recommended for acceptance testing because the information obtained is qualitative rather than quantitative in nature (see Section 12).
The response of fibers to the dye mixture is indicative of the uniformity of dyeing, the probability of dyeing defects due to neps, and the difficulties to be expected from heterogeneity of fibers that differ in dyeing characteristics. In general, the red dye is retained predominantly by the thick-walled fibers and the green by the thin-walled fibers.
The color response of the specimens to the dyes in the binary mixture reflects the behavior to be expected with many other dyes. The colors from red to green may be influenced by factors such as weather during the growing period, exposure of open bolls in the field before harvest, natural color, fineness, and degree of wall development.
SCOPE
1.1 This test method covers a test for the characterization of certain dyeing behavior of cotton. This test method is especially applicable to raw cotton fibers, but may also be adapted to cotton yarns and fabrics.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation:D1464–07
Standard Test Method for
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Differential Dyeing Behavior of Cotton
This standard is issued under the fixed designation D1464; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 5.2 The response of fibers to the dye mixture is indicative of
the uniformity of dyeing, the probability of dyeing defects due
1.1 This test method covers a test for the characterization of
to neps, and the difficulties to be expected from heterogeneity
certain dyeing behavior of cotton. This test method is espe-
of fibers that differ in dyeing characteristics. In general, the red
cially applicable to raw cotton fibers, but may also be adapted
dye is retained predominantly by the thick-walled fibers and
to cotton yarns and fabrics.
the green by the thin-walled fibers.
1.2 This standard does not purport to address all of the
5.3 The color response of the specimens to the dyes in the
safety concerns, if any, associated with its use. It is the
binary mixture reflects the behavior to be expected with many
responsibility of the user of this standard to establish appro-
other dyes. The colors from red to green may be influenced by
priate safety and health practices and determine the applica-
factors such as weather during the growing period, exposure of
bility of regulatory limitations prior to use.
open bolls in the field before harvest, natural color, fineness,
2. Referenced Documents and degree of wall development.
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2.1 ASTM Standards:
6. Apparatus
D123 Terminology Relating to Textiles
6.1 Balance,havingacapacityof1000gandasensitivityof
D1441 Practice for Sampling Cotton Fibers for Testing
0.05 g.
D7139 Terminology for Cotton Fibers
6.2 Beakers, preferably of stainless steel, having capacities
3. Terminology
of 400, 1200, 2000, and 3000 mL.
6.3 Clothes Wringer, or Centrifuge.
3.1 ForallterminologyrelatedtoD13.11,CottonFibers,see
6.4 Cylinders, graduated, having capacities of 5, 10, 25, 50,
Terminology D7139.
100, and 500 mL or Burets (automatic, screw-top, acid-bottle
3.1.1 The following term is relevant to this standard: differ-
type preferred).
ential dyeing behavior.
6.5 Büchner Filter Funnel, coarse, fritted-disk, 80-mm.
3.2 For all other terminology related to textiles, see Termi-
6.6 Source of Suction.
nology D123.
6.7 Sewing Machine, or Needle and Thread.
4. Summary of Test Method
6.8 Timer (with Second Hand), or Stop Watch.
6.9 Wiley Mill, laboratory, intermediate model.
4.1 Specimens are dyed under specified conditions in a bath
containing a mixture of prescribed red and green dyes. The
7. Reagents and Material
resultant colors are compared with those of cottons of known
7.1 Dyes:
dyeing behavior or fiber properties.
7.1.1 CI Direct Green 26 (Color Index No. 34045), 1 g/100
5. Significance and Use
mL stock solution.
7.1.2 CI Direct Red 81 (Color Index No. 28160), 0.5 g/100
5.1 This test method is not recommended for acceptance
mL stock solution.
testing because the information obtained is qualitative rather
7.2 Distilled Water.
than quantitative in nature (see Section 12).
7.3 Sodium Carboxymethyl Cellulose, low viscosity (“Car-
bose D”).
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This test method is under the jurisdiction ofASTM Committee D13 onTextiles
7.4 Sodium Carboxymethyl Cellulose Solution (1 %)—
and is the direct responsibility of Subcommittee D13.11 on Cotton Fibers.
Dissolve 0.1 g of sodium carboxymethyl cellulose in distilled
Current edition approved Jan. 1, 2007. Published January 2007. Originally
approved in 1957T. Last previous edition approved in 2002 as D1464–90(2002). water and dilute to 100 mL.
DOI: 10.1520/D1464-07.
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NOTE 1—Any commercially available distilled water or water singly
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
distilled in laboratory glassware is acceptable.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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D1464–07
7.5 Sodium Chloride Solution (1 %)—Dissolve1gofre- remove the unbound dye, and squeeze or centrifuge. Handle
agent grade NaCl in 100 mL of distilled water. each bagged specimen separately during this operation, but
7.6 Bleached Gauze, such as cheesecloth, or gauze having a treat all in as nearly the same manner as possible to ensure
fabric count of 28 by 24 (approx 11 by 9.5/10 mm). uniform treatment and rapid uniform removal of the hot water.
NOTE 3—The after-treatment with b
...
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