Swelling of linear polymers in mixed swelling agents; predictability by means of solubility parameters
نویسندگان
چکیده
where z2tEva p is the energy of vaporization and Vm is the molar volume. From equation (1) it is clear that a smaller difference in 6 between two compounds results in a diminished energy of mixing. A decrease in 2XEmi x gives a higher degree of swelling and eventually complete solubility may result. The applicability of equation (1) has been extended by Hansen 2, who divided the solubility parameter into contributions from disperse (6d), dipole (6p) and donor/acceptor or hydrogen-bond (6h) interactions, and represented 6 as:
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