Production of porous suspension polymers using a continuous tubular reactor |
| |
Authors: | P J Dowding J W Goodwin B Vincent |
| |
Institution: | (1) School of Chemistry, University of Bristol Cantock's Close, Bristol BS8 1TS, UK e-mail: brian.vincent@bris.ac.uk Tel.: +44-117-9288160 Fax: +44-117-9250612, GB |
| |
Abstract: | The conventional method for the synthesis of porous cross-linked copolymer beads is by suspension polymerisation. Suspension
polymerisation reactions are generally performed in a stirred tank, which generally results in a large size distribution.
By careful control of the polymerisation conditions, polymer beads can be produced using a tubular poly(tetrafluoroethylene)
continuous reactor. Such beads are produced with the same average pore size, but with a lower degree of polydispersity than
analogous systems produced in a batch reactor (stirred tank). This is achieved by density-matching the droplet and continuous
phases (by the use of a brominated monomer or a porogenic diluent) and increasing the viscosity of the monomer phase (with
the addition of small amounts of polystyrene).
Received: 26 June 1999/Accepted in revised form: 7 October 1999 |
| |
Keywords: | Suspension polymerisation Continuous tubular reactor Porous beads |
本文献已被 SpringerLink 等数据库收录! |