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ASTM D5576-00
Standard Practice for Determination of Structural Features in Polyolefins and Polyolefin Copolymers by Infrared Spectroscopy (FT-IR)
Automaticky preložený názov:
Štandardná prax pre stanovenie štrukturálnych funkcie v polyolefínov a polyolefínových kopolymérov infračervenej spektroskopie ( FT - IR )
NORMA vydaná dňa 10.3.2000
Informácie o norme:
Označenie normy: ASTM D5576-00
Poznámka: NEPLATNÁ
Dátum vydania normy: 10.3.2000
Kód tovaru: NS-31727
Počet strán: 3
Približná hmotnosť: 9 g (0.02 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Anotácia textu normy ASTM D5576-00 :
Keywords:
copolymers, FT-IR, infrared spectrophotometry, polyethylene, structural features, ICS Number Code 83.080.20 (Thermoplastic materials)
Doplňujúce informácie
| 1. Scope | ||||||||||||||||||||||||||
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1.1 This practice describes infrared procedures for determining the molecular structural entities in the polyolefin chains (their quantitative levels with internal (Procedure A) and external (Procedure B) evaluation for sample thickness are suggested in the Appendix). The structural entities of primary concern are the types and distribution of branches. Although this practice centers its attention on polyolefins, the techniques, with proper modification, can be used for some other polymers as well. 1.2 Often these structural entities are at a level of less than 2%. Higher concentration of branching systems may be treated in other methods that address a specific problem associated with entities between 2 and 49%. 1.3 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. Specific hazards statements are given in Section 8. Note 1-There is no similar or equivalent ISO standard. |
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