Evaluation of different catalyst systems for bulk polymerization through “click” chemistry

• Published in: Polymer (Guilford) Vol. 52; no. 20; pp. 4435 - 4441
• Main Authors: Sheng, Xia, Rock, Darman M., Mauldin, Timothy C., Kessler, Michael R.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 12.09.2011; Elsevier
• Subjects: Addition polymerization; Alkynes; Applied sciences; Architecture; Bulk polymerization; Catalysts; Differential scanning calorimetry; Exact sciences and technology; Kinetics; Organic polymers; Physicochemistry of polymers; Polycondensation; Polymerization; polymers; Preparation, kinetics, thermodynamics, mechanism and catalysts; Rheology; thermogravimetry; “Click” chemistry; Rheology; “Click” chemistry; Kinetics; Viscoelasticity; Propargylic compound; Ether polymer; Complex catalyst polymerization; Complex catalyst; Thermal stability; Alcohol polymer; Hydroxyether; Click chemistry; Copper; Activation energy; Organic azide; Cyclopolymerization; Copper complex; Experimental study; Functional polymer; Chemical reaction kinetics; Cyclopolymer; Triazole derivative polymer; Tertiary amine; Bromo complex; Catalyst activity; Comparative study; Charcoal
• ISSN: 0032-3861; 1873-2291
• DOI: 10.1016/j.polymer.2011.07.018

“Click” chemistry is a frequently used technique in polymer chemistry for coupling polymer end groups to construct novel copolymer architectures and as a step-growth polymerization technique. In this study, the bulk polymerization of a diyne and a bisazide were achieved through the copper-catalyzed alkyne-azide 1,3-cycloaddition (CuAAC) with different catalysts, including the homogeneous catalyst Cu(PPh3)3Br and a heterogeneous Cu/C catalyst. The effects of different catalyst systems on the kinetics of the “click” polymerization were evaluated by differential scanning calorimetry (DSC) and oscillatory rheology. Additionally, the thermomechanical properties of resulting polymers were evaluated by temperature-ramp oscillatory rheology and thermal stabilities by thermogravimetry. [Display omitted]