The thiol-isocyanate chemistry was used to create crosslinked polymer networks without the use of solvent and catalyst. The preliminary study of a model thiol-isocyanate reaction was performed to confirm the “efficient linking” feature of the reaction, as indicated by online FTIR method. Temperature-modulated differential scanning calorimetry (TMDSC) was used to characterize the occurrence of the networks thiol-isocyanate reaction between multifunctional reactants, the influence of temperature on the reaction rate and the glass transition temperatures of the partially and fully cured networks. | SCIENCE & TECHNOLOGY DEVELOPMENT, , - 2016 Temperature-modulated DSC study of network formation via Thiol-Isocyanate “click” reaction Nguyen Tran Ha 1 Nguyen Thi Le Thu 2 Le Van Thang 1 Le Lam 1 1 Materials Technology Key Laboratory (Mtlab), Ho Chi Minh City University of Technology, VNUHCM. 2 Faculty of Materials Technology, Ho Chi Minh City University of Technology, VNU-HCM. (Manuscript Received on September 10th, 2015, Manuscript Revised March 29th, 2016) ABSTRACT The thiol-isocyanate chemistry was used to create crosslinked polymer networks without the use of solvent and catalyst. The preliminary study of a model thiol-isocyanate reaction was performed to confirm the “efficient linking” feature of the reaction, as indicated by online FTIR method. Temperature-modulated differential scanning calorimetry (TMDSC) was used to characterize the occurrence of the networks thiol-isocyanate reaction between multifunctional reactants, the influence of temperature on the reaction rate and the glass transition temperatures of the partially and fully cured networks. The investigation could pave the way for the design and tailoring of new cross-linked polymer materials for on-demand applications. Key words: Temperature-modulated DSC, thiol-isocyanate, click reaction. 1. INTRODUCTION Many polymerization reactions used to constitute polymer networks are complex and often require an initial resin formulation that properties has enabled their use across various fields and contributed to many technological advancements [1]. The broad spectrum of undergoes a rapid transition from a relatively low viscosity liquid state to a highly crosslinked, glassy solid state with corresponding changes in different material properties. The ability to react applications in which polymer networks have become important vary from automobile and aircraft parts to biomedical devices to lithographic imprint materials and optical devices and form networks with .
