Journal of Chemistry / 2014 / Article / Tab 2 / Research Article
Salt Effect on the Cloud Point Phenomenon of Amphiphilic Drug-Hydroxypropylmethyl Cellulose System Table 2 Effect of drug on the cloud point (CP) and energetic parameters for clouding in 1.0 weight percent of hydroxypropylmethyl cellulose (HPMC) solutions in the presence of various salts. The uncertainties in the CP values lie within ±0.1 degree.
CP K
kJ/mol
kJ/mol
kJ/mol
CP K
kJ·mol
kJ·mol
kJ·molNORT IBF Pure water 1.16 336.15 −25.31 −195.49 −170.17 2.91 334.15 −22.62 −70.16 −47.54 2.25 337.15 −23.54 −171.95 5.63 335.15 −20.85 −49.32 3.28 338.15 −22.55 −172.93 10.60 336.15 −19.14 −51.03 5.15 339.15 −21.34 −174.14 20.79 338.15 −17.36 −52.81 6.82 340.15 −20.61 −174.87 28.67 341.15 −16.61 −53.56 10.30 342.15 −19.56 −175.92 34.93 351.15 −16.52 −53.65 13.03 344.15 −19.01 −176.48 37.10 355.15 −16.53 −53.64 15.24 346.15 −18.66 −176.82 39.10 359.15 −16.56 −53.61 18.60 349.15 −18.25 −177.24 40.10 363.15 −16.6 −53.57 21.02 352.15 −18.05 −177.44 10 mM NaCl 1.16 336.15 −25.32 −171.51 −146.19 2.91 336.15 −22.76 121.82 −99.06 2.25 338.15 −23.61 −147.90 5.63 337.15 −20.97 −100.85 4.24 340.15 −21.96 −149.55 10.60 338.15 −19.26 −102.57 6.01 342.15 −21.10 −150.42 15.02 339.15 −18.33 −103.49 9.67 344.15 −19.86 −151.65 18.97 340.15 −17.73 −104.10 12.53 345.15 −19.17 −152.34 27.24 342.15 −16.80 −105.02 16.73 348.15 −18.50 −153.01 33.78 346.15 −16.38 −105.45 19.66 350.15 −18.14 −153.37 39.10 354.15 −16.32 −105.50 21.81 353.15 −17.99 −153.52 100 mM NaCl 1.16 330.15 −24.87 109.28 134.15 2.91 331.15 −22.42 210.20 232.628 2.25 327.15 −22.84 132.13 5.63 329.15 −20.48 230.682 3.28 324.15 −21.62 130.91 10.60 327.15 −18.63 228.837 4.24 321.15 −20.74 130.02 15.02 325.15 −17.57 227.782 5.15 319.15 −20.09 129.38 18.97 323.15 −16.84 227.046 6.01 318.15 −19.62 128.91 22.52 324.15 −16.43 −19.93 −3.5059 6.82 317.15 −19.22 128.51 25.74 327.15 −16.22 −3.717 10.30 321.15 −18.37 −72.74 −54.38 32.59 338.15 −16.1 −3.8347 13.03 323.15 −17.85 −54.9 38.12 348.15 −16.12 −3.8123 15.25 325.15 −17.53 −55.21 17.07 327.15 −17.33 −55.41 19.90 330.15 −17.07 −55.68 200 mM NaCl 1.16 326.15 −24.57 114.86 139.43 2.91 329.15 −22.29 163.87 186.157 2.25 322.15 −22.49 137.35 8.19 326.15 −19.27 183.145 3.28 319.15 −21.29 136.15 12.87 324.15 −17.94 181.808 5.15 315.15 −19.84 134.7 17.04 321.15 −17.02 180.892 6.82 316.15 −19.16 71.64 −52.47 20.79 319.15 −16.39 180.259 8.32 318.15 −18.76 −52.88 24.17 321.15 −16.09 19.13 −3.0444 11.47 321.15 −18.08 −53.56 27.24 323.15 −15.87 −3.2651 13.97 324.15 −17.71 −53.92 33.78 333.15 −15.76 −3.3708 16.02 327.15 −17.51 −54.13 39.10 343.15 −15.82 −3.3143 19.14 329.15 −17.13 −54.51 21.43 331.15 −16.92 −54.72