Polyacrylonitrile

Polyacrylonitrile
Page d'aide sur l'homonymie Pour les articles homonymes, voir PAN.
Polyacrylonitrile
Polyacrylonitrile
Général
No CAS 25014-41-9
Propriétés chimiques
Formule brute C3H3N  [Isomères](C3H3N)x
Masse molaire[1] 53,0626 ± 0,0028 g·mol-1
C 67,91 %, H 5,7 %, N 26,4 %,
Propriétés électroniques
constante diélectrique 5,5 (1 kHz, 25 °C)
4,2 (1 MHz, 25 °C)[2]
Unités du SI & CNTP, sauf indication contraire.

Le polyacrylonitrile (PAN) est un polymère très cohésif. Il fait partie de la famille des acryliques (comme le PMMA).

Structure moléculaire :

     H H
     | |
... -C-C- ...
     | |
     H CN

Ce polymère semi-cristallin se dégrade thermiquement dès 200 °C.

Utilisations :

Remarque : l'acrylonitrile est utilisé comme comonomère minoritaire pour fabriquer le SAN, l'ABS et le NBR.

Notes et références

  1. Masse molaire calculée d’après Atomic weights of the elements 2007 sur www.chem.qmul.ac.uk.
  2. (en) David R. Lide, CRC Handbook of Chemistry and Physics, CRC Press Inc, 2009, 90e éd., Relié, 2804 p. (ISBN 978-1-420-09084-0) 

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