## 3 Results
### Work of Adhesion of Organic Solvents on Modified Copolymer
This result is similar to that obtained in previous studies during the study of the adsorption of PMMA on silica and alumina at  
\begin{table}
\begin{tabular}{c c c c c} \hline \hline \multicolumn{1}{c}{**S-DVB Copolymer**} \\ \hline
**Solvents** & **Equation \(\Delta S_{5}(q)\) (in m) m\({}^{-2}\) K\({}^{-1}\))** & \(\mathbf{R}^{2}\) & **Equation \(\Delta H_{5}(q)\) (in m) m\({}^{-2}\))** & \(\mathbf{R}^{2}\) \\ \hline n-hexane & \(\Delta S_{5}=0.076\,q\) (Meta) \(+0.65\) & 0.9757 & \(\Delta H_{5}=46.92\,q\) (Meta) \(+277.19\) & 0.9948 \\ \hline n-heptane & \(\Delta S_{5}=0.033\,q\) (Meta) \(+0.615\) & 0.9945 & \(\Delta H_{5}=33.70\,q\) (Meta) \(+196.20\) & 0.9699 \\ \hline n-octane & \(\Delta S_{5}=0.024\,q\) (Meta) \(+0.485\) & 0.9931 & \(\Delta H_{5}=24.44\,q\) (Meta) \(+215.01\) & 0.9701 \\ \hline n-nonane & \(\Delta S_{5}=0.016\,q\) (Meta) \(+0.51\) & 0.9143 & \(\Delta H_{5}=22.05\,q\) (Meta) \(+223.96\) & 0.9647 \\ \hline Benzene & \(\Delta S_{5}=0.065\,q\) (Meta) \(+0.46\) & 0.9837 & \(\Delta H_{5}=34.78\,q\) (Meta) \(+242.54\) & 0.9821 \\ \hline Toluene & \(\Delta S_{5}=0.031\,q\) (Meta) \(+0.545\) & 0.9468 & \(\Delta H_{5}=30.83\,q\) (Meta) \(+270.14\) & 0.9852 \\ \hline Ethyl acetate & \(\Delta S_{5}=0.055\,q\) (Meta) \(+0.51\) & 0.9181 & \(\Delta H_{5}=32.15\,q\) (Meta) \(+283.00\) & 0.9313 \\ \hline Ethanol & \(\Delta S_{5}=0.238\,q\) (Meta) \(+0.97\) & 0.9612 & \(\Delta H_{5}=193.26\,q\) (Meta) \(+225.28\) & 0.9515 \\ \hline i-Propanol & \(\Delta S_{5}=0.146\,q\) (Meta) \(+1.04\) & 0.9769 & \(\Delta H_{5}=101.67\,q\) (Meta) \(+517.19\) & 0.9238 \\ \hline Dichormethane & \(\Delta S_{5}=-0.09\,q\) (Meta) \(+1.41\) & 0.962 & \(\Delta H_{5}=60.23\,q\) (Meta) \(+394.56\) & 0.9885 \\ \hline \multicolumn{1}{c}{**S-DVB/5-IMU**} \\ \hline Solvents & Equation \(\Delta S_{5}(q)\) (in m) m\({}^{-2}\) K\({}^{-1}\)) & \(\mathbf{R}^{2}\) & Equation \(\Delta H_{5}(q)\) (in m) m\({}^{-2}\)) & \(\mathbf{R}^{2}\) \\ \hline n-hexane & \(\Delta S_{5}=-0.003\,q\) (5-IMU) \(+0.793\) & 0.9963 & \(\Delta H_{5}=11.15\,q\) (5-IMU) \(+376.06\) & 0.9992 \\ \hline n-heptane & \(\Delta S_{5}=0.011\,q\) (5-IMU) \(+0.592\) & 0.9106 & \(\Delta H_{5}=3.98\,q\) (5-IMU) \(+306.11\) & 0.9177 \\ \hline n-octane & \(\Delta S_{5}=0.018\,q\) (5-IMU) \(+0.582\) & 0.9209 & \(\Delta H_{5}=75.84\,q\) (5-IMU) \(+299.23\) & 0.9137 \\ \hline n-nonane & \(\Delta S_{5}=0.022\,q\) (5-IMU) \(+0.589\) & 0.9508 & \(\Delta H_{5}=9.35\,q\) (5-IMU) \(+306.71\) & 0.9276 \\ \hline Benzene & \(\Delta S_{5}=0.019\,q\) (5-IMU) \(+0.689\) & 0.9382 & \(\Delta H_{5}=8.66\,q\) (5-IMU) \(+355.24\) & 0.9383 \\ \hline Toluene & \(\Delta S_{5}=0.022\,q\) (5-IMU) \(+0.88\) & 0.9999 & \(\Delta H_{5}=3.55\,q\) (5-IMU) \(+527.96\) & 0.9914 \\ \hline Ethyl acetate & \(\Delta S_{5}=-0.006\,q\) (5-IMU) \(+1.080\) & 0.9382 & \(\Delta H_{5}=3.43\,q\) (5-IMU) \(+581.78\) & 0.9606 \\ \hline Ethanol & \(\Delta S_{5}=0.050\,q\) (5-IMU) \(+1.233\) & 0.9261 & \(\Delta H_{5}=33.10\,q\) (5-IMU) \(+610.84\) & 0.9582 \\ \hline i-Propanol & \(\Delta S_{5}=0.033\,q\) (5-IMU) \(+1.205\) & 0.9999 & \(\Delta H_{5}=39.70\,q\) (5-IMU) \(+497.81\) & 0.9249 \\ \hline Dichormethane & \(\Delta S_{5}=-0.026\,q\) (5-IMU) \(+1.254\) & 0.9008 & \(\Delta H_{5}=-12.08\,q\) (5-IMU) \(+620.49\) & 0.9479 \\ \hline \multicolumn{1}{c}{**S-DVB/5-FU**} \\ \hline Solvents & Equation \(\Delta S_{5}(q)\) (in m) m\({}^{-2}\) K\({}^{-1}\)) & \(\mathbf{R}^{2}\) & Equation \(\Delta H_{5}(q)\) (in m) m\({}^{-2}\)) & \(\mathbf{R}^{2}\) \\ \hline n-hexane & \(\Delta S_{5}=0.010\,q\) (5-FU) \(+0.848\) & 0.9368 & \(\Delta H_{5}=4.65\,q\) (5-FU) \(+408.29\) & 0.9286 \\ \hline n-heptane & \(\Delta S_{5}=0.012\,q\) (5-FU) \(+0.526\) & 0.9523 & \(\Delta H_{5}=5.55\,q\) (5-FU) \(+274.69\) & 0.9462 \\ \hline n-octane & \(\Delta S_{5}=0.013\,q\) (5-FU) \(+0.467\) & 0.9368 & \(\Delta H_{5}=6.56\,q\) (5-FU) \(+251.75\) & 0.9357 \\ \hline n-nonane & \(\Delta S_{5}=0.015\,q\) (5-FU) \(+0.439\) & 0.9089 & \(\Delta H_{5}=7.30\,q\) (5-FU) \(+245.52\) & 0.9311 \\ \hline Benzene & \(\Delta S_{5}=0.015\,q\) (5-FU) \(+0.557\) & 0.9286 & \(\Delta H_{5}=7.46\,q\) (5-FU) \(+300.03\) & 0.9296 \\ \hline Toluene & \(\Delta S_{5}=0.032\,q\) (5-FU) \(+0.478\) & 0.9026 & \(\Delta H_{5}=20.74\,q\) (5-FU) \(+288.02\) & 0.9529 \\ \hline Ethyl acetate & \(\Delta S_{5}=0.026\,q\) (5-FU) \(+1.037\) & 0.9126 & \(\Delta H_{5}=25.73\,q\) (5-FUdifferent recovery fractions, where the polar free energy of adsorption was correlated to the two thermodynamic variables such as the temperature and the percentage of adsorption.