Site pages
Current course
Participants
General
Topic 1
Topic 2
Topic 3
Topic 4
Topic 5
Topic 6
Topic 7
Topic 8
Topic 9
Topic 10
Topic 11
Topic 12
Topic 13
Topic 14
Topic 15
Topic 16
Topic 17
Topic 18
Topic 19
Topic 20
Topic 21
Topic 22
Topic 23
Topic 24
Topic 25
Topic 26
2.3.4.1. Polystyrene
Polystyrene resins are made by co-polymerising styrene with the cross linker, divinyl benzene. Sulphonation of cross-linked polystyrene gives sulphonated polystyrene resin which is a strong cation exchanger (eg. Dowex 50). Anion exchangers are prepared by reacting cross-linked polystyrene with chlormethylether and then the chlorogroup is ionized with tertiary amine –CH2N+(CH3)3Cl- groups. |
Last modified: Thursday, 10 November 2011, 11:24 AM