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Standard Practice for Determination of Structural Features in Polyolefins and Polyolefin Copolymers by Infrared Spectrophotometry (FT-IR)
Automaticky preložený názov:
Štandardná prax pre stanovenie štrukturálnych funkcie v polyolefínov a polyolefinové kopolymérov Infračervené spektrum (FT-IR)
NORMA vydaná dňa 1.4.2013
Označenie normy: ASTM D5576-00(2013)
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.4.2013
Kód tovaru: NS-31726
Počet strán: 3
Približná hmotnosť: 9 g (0.02 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
copolymers, FT-IR, infrared spectrophotometry, polyethylene, structural features, ICS Number Code 83.080.20 (Thermoplastic materials)
1. Scope | ||
1.1 This practice covers infrared procedures for determining the molecular structural features in polyolefins and polyolefin copolymers. The structural features of primary concern are the types and numbers of branches. Although this practice centers its attention on polyolefins and polyolefin copolymers, the techniques, with proper modification, can be used for some other polymers as well. Structure |
Absorption Band, cm–1 |
ASTM Test Method |
Methyl group (polyethylene) |
1378 |
D2238 |
Methyl group (eth-prop copol) |
1380 |
|
Pendant methyl |
935 |
|
Terminal vinyl |
908 |
D6248 |
Trans-vinylene |
965 |
D6248 |
Vinylidene |
888 |
D3124 |
Structure
Absorption Band, cm–1
ASTM Test Method
Vinyl acetate
609
D5594
1020
D5594
3270
D5594
Styrene
770–700
1600–1500
Ethyl acrylate
1640–1730
862
D3594
Ethylene acrylate
1280–1200
1640–1625
1.2 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 to determine the applicability of the regulatory limitations prior to use.
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