suspension polymerization polystyrene
suspension polymerization polystyrene
(OP)
Dear members
I am doing suspension polymerization of polystyrene,
BPO is used as initiator (~1wt % of monomer)
PVA as dispersed agent (0.4 -> 1wt% of water)
monomer/water : 1/10 and 2/10 and 4/10
I tried to vary monomer/water ratio, PVA ratio, and i always fail to obtain the bead but an aggregated mass.
The coalescence always happens at sticky stage.
please advice how to overcome this and obtain bead PS
Thank you so much
Best regards
I am doing suspension polymerization of polystyrene,
BPO is used as initiator (~1wt % of monomer)
PVA as dispersed agent (0.4 -> 1wt% of water)
monomer/water : 1/10 and 2/10 and 4/10
I tried to vary monomer/water ratio, PVA ratio, and i always fail to obtain the bead but an aggregated mass.
The coalescence always happens at sticky stage.
please advice how to overcome this and obtain bead PS
Thank you so much
Best regards





RE: suspension polymerization polystyrene
There is not any memory with less satisfaction than the memory of some temptation we resisted.
- James Branch Cabell
RE: suspension polymerization polystyrene
PVA used is
341584
Aldrich Poly(vinyl alcohol)
average Mw 89,000-98,000, 99+% hydrolyzed
I am not really sure whether it is suitable.
I need to keep on with PVA, thank you for your suggestions.
Best regards
RE: suspension polymerization polystyrene
There is not any memory with less satisfaction than the memory of some temptation we resisted.
- James Branch Cabell
RE: suspension polymerization polystyrene
I get it, the PS particles with the new PVA of 87-89% hydrolyzed,
Thank Demon3.
RE: suspension polymerization polystyrene
There is not any memory with less satisfaction than the memory of some temptation we resisted.
- James Branch Cabell