The solubility parameter of chlorosulfonated polyethylene
Polimery 2000, No 1, 41
SummaryEquilibrium swelling maxima of chlorosulfonated polyethylene vulcanizates characterized by rising bound-chlorine contents, viz., 24, 35 and 43 wt.%, were measured in six binary solvent mixtures (Fig. 1) and the data were used to evaluate the one-component (δ) and the multicomponent (δo) solubility parameters, δ = 18.2, 19.2 and 19.6 MPa1/2 and δo = 18.4, 19.7 and 20.2 MPa1/2, resp. The dispersion (δd), the polar (δp) and the hydrogen-bonding (δh) components of the solubility parameter were evaluated for the vulcanizates, viz., δp = 6.4–7.9 MPal/2, δd = 16.0–16.7 MPal/2, and δh = 4.4–6.0 MPa1/2. The δd varied only slightly as the bound-chlorine content was raised, whereas δp and δh rose as the bound-Cl content was increased.