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(A) Relative polymerization shrinkage stress versus allyl sulfide concentration and (B) versus glass transition temperature. The experiments were conducted using stoichiometric thiol-ene mixture (●) and off-stoichiometric 2:1 thiol-ene mixture (□). Samples contain 1 wt% HCPK, irradiated at 3 mW/cm2 using 365 nm light.
