TY - JOUR
T1 - Synthesis of highly cross-linked poly(diethylene glycol dimethacrylate) microparticles in supercritical carbon dioxide
AU - Casimiro, Teresa
AU - Banet-Osuna, Anna M.
AU - Ramos, Ana M.
AU - Da Ponte, Manuel Nunes
AU - Aguiar-Ricardo, Ana
N1 - Financial support from Fundação para a Ciência e Tecnologia through contract POCTI/QUI/35429/2000 and FEDER. Conselho de Reitores das Universidades Portuguesas through Grant no. B-24/01. T.C. thanks FCT/Lisbon for a doctoral grant PRAXIS XXI/BD/16007/98 and FSE. A.B. thanks European Commission through contract FMRX.CT97-0104.
PY - 2005/9/1
Y1 - 2005/9/1
N2 - Herein we report the synthesis of poly(diethylene glycol dimethacrylate), poly(DEGDMA), by free-radical heterogeneous polymerization in supercritical carbon dioxide (scCO2), using a commercially available carboxylic acid end-capped perfluoropolyether oil (Krytox 157FSL) as stabiliser. The effect of initial concentration of stabiliser, monomer and initiator on the yield and morphology of the resulting polymer has been investigated. Krytox worked effectively as a stabiliser and discrete poly(DEGDMA) particles with diameters ranging from 1.28 to 2.08 μm and narrow particle size distribution were produced in supercritical carbon dioxide, in high yield and in short reaction times, without making use of harmful organic solvents.
AB - Herein we report the synthesis of poly(diethylene glycol dimethacrylate), poly(DEGDMA), by free-radical heterogeneous polymerization in supercritical carbon dioxide (scCO2), using a commercially available carboxylic acid end-capped perfluoropolyether oil (Krytox 157FSL) as stabiliser. The effect of initial concentration of stabiliser, monomer and initiator on the yield and morphology of the resulting polymer has been investigated. Krytox worked effectively as a stabiliser and discrete poly(DEGDMA) particles with diameters ranging from 1.28 to 2.08 μm and narrow particle size distribution were produced in supercritical carbon dioxide, in high yield and in short reaction times, without making use of harmful organic solvents.
KW - Cross-linking
KW - Diethylene glycol dimethacrylate
KW - Heterogeneous polymerisation
KW - Krytox
KW - Supercritical carbon dioxide
UR - http://www.scopus.com/inward/record.url?scp=22144482376&partnerID=8YFLogxK
U2 - 10.1016/j.eurpolymj.2005.03.015
DO - 10.1016/j.eurpolymj.2005.03.015
M3 - Article
AN - SCOPUS:22144482376
VL - 41
SP - 1947
EP - 1953
JO - European Polymer Journal
JF - European Polymer Journal
SN - 0014-3057
IS - 9
ER -