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SN/T 2194-2008: Textile. Polylactic acid fibre mixtures. Quantitative chemical analysis
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| SN/T 2194-2008 | English | 239 |
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Textile. Polylactic acid fibre mixtures. Quantitative chemical analysis
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SN/T 2194-2008
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Basic data | Standard ID | SN/T 2194-2008 (SN/T2194-2008) | | Description (Translated English) | Textile. Polylactic acid fibre mixtures. Quantitative chemical analysis | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | W04 | | Classification of International Standard | 59.080.01 | | Word Count Estimation | 9,912 | | Date of Issue | 2008-11-18 | | Date of Implementation | 2009-06-01 | | Quoted Standard | GB/T 8170 | | Regulation (derived from) | National Quality Inspection [2008] No. 577 | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the use of polylactic acid dissolution method for the determination of each component in fiber blends quantitative analysis method. This standard applies to polylactic acid fibers containing binary textile fiber mixtures and quantitative analysis of mixed products. | SN/T 2194-2008: Textile. Polylactic acid fibre mixtures. Quantitative chemical analysis---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Textile.Polylactic acid fibre mixtures.Quantitative chemical analysis
Exit inspection and quarantine industry standard book People's Republic of China
Polylactic acid textile fiber mixtures
Quantitative chemical analysis
Posted 2008-11-18
2009-06-01 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard was drafted. People's Republic of China, Ningbo Entry-Exit Inspection and Quarantine of Jiangsu People's Republic of China
Bureau of Donghua University.
The main drafters of this standard. Fuke Jie, Yang Lisheng, Caoxi Zhong Min Jie, Li Zhengrong, Zhu Min.
This standard is the first release of the entry-exit inspection and quarantine industry standards.
Polylactic acid textile fiber mixtures
Quantitative chemical analysis
1 Scope
This standard specifies the method for quantitative analysis of PLA fiber blended products of each component was determined by dissolution method.
This standard applies to the quantitative analysis of polylactic acid-containing fibers and blends of binary textile fiber products intertwined.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 8170 Revised figures indicate about the rules and limit values and judgment
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
Also known as polylactide fibers, mainly made by the polymerization of lactic acid monomer, wherein the lactate units (by volume) in the molecule content greater than or equal
At 85%, the melting point of the polymer fiber molecule not less than 135 ℃.
Principle 4
Component blended products after qualitative identification, select the appropriate reagents dissolved and removed one of the components, the insoluble fiber washing, drying, cold
But, weighing, calculate the percentage content of each component.
5 Reagents
The reagents used are chemically pure. Testing workers should have good skills test, while the test place to wear safety prevention
Nursing supplies. All chemicals are likely to cause some damage to the human body, it needs to be handled with care.
5.1 distilled or deionized water.
5.2 petroleum ether, distillation range 40 ℃ ~ 60 ℃.
5.3 dichloromethane.
5.4 75% (mass fraction) sulfuric acid. 1000mL concentrated sulfuric acid (density 1.84g/mL) was slowly added to 570mL of water, sulfuric acid concentration control
Prepared in 73% to 77% (by mass) range.
5.5 80% (mass fraction) of formic acid. 880mL90% formic acid (density 1.204g/mL) was diluted with water to 1L, formic acid concentration at
77% to 83% (by mass) range.
5.6 Dilute ammonia solution. 40mL ammonia (density 0.880g/mL) was diluted with water to 1L.
6 Instruments
6.1 Soxhlet extractor.
6.2 constant temperature water bath.
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