ASTM D629-08

1.1 These test methods cover procedures for the determination of the fiber blend composition of mixtures of the fibers listed in 1.2. Procedures for quantitative estimation of the amount of moisture and certain nonfibrous materials in textiles are also described, for use in the analysis of mixtures, but these are not the primary methods for the determination of moisture content for commercial weights.

1.2 These test methods cover procedures for the following fiber types:

1.2.1 Natural Fibers:

1.2.1.1 Cellulose-Base Fibers:

Cotton

Hemp

Flax

Ramie

1.2.1.2 Protein-Base Fibers:

Animal hairs (other than wool)

Silk, cultivated

Silk, Tussah

Wool

1.2.2 Man-Made Fibers:

1.2.2.1 Cellulose-Base Fibers:

Acetate (secondary)

Rayon, viscose or cuprammonium

Triacetate

1.2.2.2 Synthetic-Base Fibers:

Acrylic

Aramid

Modacrylic

Nylon 6, Nylon 6-6, others

Olefin

Polyester

Spandex

1.3 These test methods include the following sections and tables:

	Section
Referenced Documents	2
Terminology	3
Summary of Methods	4
Uses and Significance	5
Sampling	7
Purity of Reagents	6
Moisture Content or Moisture Regain	9
Nonfibrous Materials	8
Mechanical Separation or Dissection	10
Chemical Test Methods:
Summary of Methods	11
Specimens and Symbols	12
No. 1 Acetate Mixed With Other Fibers	13
No. 2 Modacrylic Mixed With Cellulosic Fiber or Wool	14
No. 3 Nylon 6 or Nylon 6-6 Mixed With Natural Fibers or Rayon	15
No. 4 Rayon Mixed With Cotton	16
No. 5 Wool or Polyester Mixed With Cellulosic Fibers or Silk	17
No. 6 Polyester or Acrylic Mixed With Wool	18
No. 7 Natural Cellulosic Material and Rayon Mixed With Acrylic, Modacrylic, and Polyester	19
No. 8 Polyester Mixed With Olefin	20
No. 9 Polyester Mixed With Acetate or Nylon 6,6-6	21
No. 10 Acrylic Fiber or Linear Spandex Mixed With Nylon or Polyester	22
Microspical Analysis
Scope	23
Summary of Method	24
Sampling	26
Apparatus	25
Procedure	27
Indexing Term	28
	Table
Chemical Methods for Analysis of Fiber Mixtures	1
Solubilities of Various Fibers in Solvents Used in Chemical Methods	2
Comparative Scale for Fineness of Various Textile Fibers	3
Fineness Ranges and Fiber Diameters of Various Textile Fibers	4
Specific Gravity of Various Textile Fibers	5

1.4 The analytical procedures described in the test methods are applicable to the fibers listed in 1.2. The test methods are not satisfactory for the separation of mixtures containing fibers that fall within the same generic class but differ somewhat, either physically or chemically, from each other. These test methods are not satisfactory for the determination of bicomponent fibers.

Note 1 - For other methods of analysis covering specific determinations, refer to: Test Methods D 461, Test Method D 584, Methods D 885, Test Method D 1113, Test Method D 1334, and Test Method D 2130. Methods for moisture are covered in Methods D 885, Test Method D 1576, Test Method D 2462, Test Method D 2495 and Test Methods D 2654. For the determination of commercial weight, refer to Test Method D 2494.

1.5 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.

23.1 The following procedures may be used for the quantitative analysis of textiles containing two or more types of fibers that cannot be readily separated chemically. If the sample contains both animal and vegetable fibers, a mechanical separation (Section 10) or a chemical analysis (Sections 11-22) shall first be made. The percentages of the different types of fibers in these two groups shall then be determined by the appropriate method as directed in Sections 24 and 26. The accuracy obtainable with microscopical methods depends to a considerable extent upon the ability of the analyst to identify the different fibers present in the mixture and also upon the number of fibers examined and the number measured.

Note 22 - Photomicrographs of common textile fibers are appended to AATCC Method 20.



Keywords: Acceptance criteria/testing--textile fabrics/fibers; Animal fibers; Bast and leaf fibers/products; Cellulose and cellulose derivatives; Cellulose fiber; Chemical properties--textiles; Composition analysis--textiles; Cotton fibers; Cross-section measurement/properties; Dissection; Extractable matter content--textile fabrics/fibers; Fiber composition; Flax fiber and products; Hemp fibers/products; Man-made textile fibers; Mechanical dissection; Microscopic examination--textiles; Moisture analysis--textile fabrics/fibers; Nonfibrous material; Protein-base fibers; Quantitative analysis/measurement; Ramie; Sampling--textiles; Silk; Synthetic-base fibers; Textile fibers; Textile fibers--bast and leaf; Textile fibers--man-made; Wool and wool top; ICS Number Code 59.080.01 (Textiles in general)

This product replaces:ASTM D629-99 - Standard Test Methods for Quantitative Analysis of Textiles

Browse Product Family:

ASTM D629-08
ASTM D629-99
ASTM D629-88