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Cyclodextrins in Polymer Synthesis: Crosslinking Water‐Soluble Unsaturated Polyester Resins Using a Cyclodextrin/Styrene Complex in Aqueous Medium
Author(s) -
Alupei Iulian C.,
Alupei Valentina,
Ritter Helmut
Publication year - 2003
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200390081
Subject(s) - styrene , monomer , polymer chemistry , maleic anhydride , polyester , aqueous solution , ethylene glycol , chemistry , solvent , polymer , cyclodextrin , copolymer , materials science , organic chemistry
Abstract A new method was developed to crosslink water‐soluble unsaturated polyester resins prepared from maleic anhydride and poly(ethylene glycol) in water as the solvent. Crosslinking was carried out with various molar ratios of the host‐guest complex consisting of styrene as the guest and methylated β ‐cyclodextrin as the host. Polymerizations were performed in water with K 2 S 2 O 8 /Na 2 S 2 O 5 as free radical initiator at 25 °C. Thermal properties of the networks obtained depend on the amount of styrene incorporated into the polymer.Acceleration effect of me‐ β ‐CD during crosslinking of an unsaturated polyester with styrene in water: (a) monomer complexed with me‐ β ‐CD, and (b) with uncomplexed monomer.