Fig. 1. Comparison of mechanical properties of elastomers prepared using polyrotaxane cross-linking agent and general cross-linking agent.

(A) Stress-extension ratio curves of the MEO₂MA elastomers prepared with HPR-C and EGDMA as cross-linkers. (B) The horizontal axis of (A) was converted to λ-λ⁻² to analyze the results of (A). On the basis of the linear relationship observed in (B), the polymer between the cross-linking points behaves as a Gaussian chain. (C) Hysteresis loops of the stress-extension ratio curves of the MEO₂MA elastomers prepared with HPR-C and EGDMA as cross-linkers.