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Synthesis and Plasticization Performance of Reactive Plasticizers Utilizing Catalyst-Free Azide-Alkyne Click Reaction
1Department of Chemical Engineering, Daegu University, Gyeongsan, Gyeongbuk 38453, Korea.
Abstract:
Three different reactive plasticizers (RPs), such as bicyclo[2.2.1]heptan-2-yl-methyl propiolate (NPA), bicyclo[2.2.1]heptan-2-yl-methyl butynoate (NBA), and bicyclo[2.2.1]heptan-2-yl-methyl pent-4-ynoate (NPEA), were synthesized in good yield and characterized. Thermal studies revealed that RPs had low glass transition temperature (Tg < -90 °C) and were thermally stable up to 210 °C. The plasticization performance of RPs to GAP prepolymer was evaluated in terms of miscibility, viscosity reduction, and azide-alkyne Click reactivity. Results made them good candidate as RPs for GAP-based polymers.
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