Sulfone-type crosslinks in sulfonation of macronet polystyrene backbone

 
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Journal part (EN)
Scientific article (EN)
1993 (EN)
Sulfone-type crosslinks in sulfonation of macronet polystyrene backbone (EN)
Tsakalos, VT (EN)
Theodoropoulos, AG (EN)
Valkanas, GN (EN)
Post-polymerization crosslinking of polystyrene solutions followed by sulfonation has been studied for the preparation and characterization of macronet crosslinked sulfonated polystyrene. A bifunctional benzene derivative (1,4-dichloromethyl-2,5-dimethyl benzene) was used as the crosslinking agent for the main crosslinking reaction. Extensive sulfone-type bridging was found to occur during sulfonation. In addition, the ion-exchange resins that were achieved by this process show increased network density at high sulfonating agent molar ratios. Determination of the porosity and the degree of swelling of the polymers in water was also performed in order to demonstrate the effects of the nominal sulfonating agent concentration on network properties. © 1993. (EN)
journalArticle (EN)
Friedel-Crafts crosslinking (EN)
chlorosulfuric acid (EN)
PARTICLES (EN)
macronet polystyrene (EN)
PRODUCTS (EN)
NETWORKS (EN)
ion-exchange resins (EN)
Polymer Science (EN)
sulfone-type crosslinks (EN)
1,4-dichloromethyl-2,5-dimethylbenzene (EN)
PHYSICAL CHARACTERIZATION (EN)
National Technical University of Athens
Digital Library of National Technical University of Athens | Dspace@NTUA
Κεντρική Βιβλιοθήκη Ε.Μ.Π.
Ιδρυματικό Αποθετήριο
Δημοσιεύσεις μελών Δ.Ε.Π. σε περιοδικά
Polymer (EN)
English
1993 (EN)
http://hdl.handle.net/123456789/11084
0032-3861 (EN)
34 (EN)
3905 (EN)
ISI:A1993LY78600021 (EN)
18 (EN)
3910 (EN)
ELSEVIER SCI LTD (EN)



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