Fig. 2: Effects of CO2 on elastomer structure.
From: Elastomers mechanically reinforced and toughened with CO2 gas
a Weight changes of samples with different gas flows. The weights of samples increase with CO2 gas. PDMS is a homopolymer without amines (KF-96H-50000CS, Shin-Etsu Chemical). The chemical reaction between primary amines and CO2 is also shown. b FT–IR spectra of elastomers in N2 (black) and CO2 (colored) gases. Ammonium carbamates are generated with CO2. c Weight changes of CL–D9 in N2/CO2 mixed gases with different CO2 concentrations. d Experimental and simulated SAXS patterns of elastomers. The SAXS patterns with and without CO2 are indicated by the colored and black plots, respectively. The Yarusso–Cooper model is used for the simulation37. V (nm3) and ND ((10 nm)−3) correspond to the volume and number density of nanodomains, respectively.
