Cyclohexanone solubility parameter

The solubility parameters of PCL are 20.8 and 20.4 jl/2.cm"2 2 when calculated using the parameters of Fedors and Hoy, respectively (58). PCL is soluble in a number of solvents at room temperature, including THF, chloroform, methylene chloride, carbon tetrachlornie, benzene, toluene, cyclohexanone, dihydropyran, and 2-nitropropane. 

FIGURE 2 The ejqjeiimental (solid curve) and theoretical (points) dependences of intrinsic viscosity [tj] on solubility parameter 5 of solvent for polyary late F-1. The solvents 1—cyclohexanone, 2—chloroform, 3— N, N-dimethylformamide, 4—tetrahydrofuian, 5— methylene chloride, 6— N, N-dimethylacetamide, 7—dichlorethane. 

Table 17.3 compares the solvency of a 60 vol% nitroethane and 40 vol% toluene blend for a nitrile-butyl rubber as compared to the solvents cyclohexanone and N-methyl 2-pyrrolidone. A Lotus 123 spreadsheet, DECITREE.WKl, was used to generate Table 17.3. This spreadsheet is included on the computer disk accompanying this book. The spreadsheet allows one to compare the solubility parameters of solvents with a selected resin. The values for the selected resin are supplied by the user while the solvent data is available from the lookup tables. The typical R values are calculated and the location of...

The role of solvents is to reduce the viscosity of adhesives and to improve fluidity. That can provide the adhesives wettability to create an intimate contact with the surface of adherends. Solvents must be able to dissolve the components of adhesives. Solubility parameter is an index to show the soliditivity of solvents. A solvent can dissolve a high amount of materials whose solubility parameters are close to that of the solvent. Water, alcohols, aromatic hydrocarbons (e.g., toluene and xylene), ketones (e.g., methyl ethyl ketone and cyclohexanone), acetate esters (e.g., ethyl acetate and butyl acetate), n-hexane, cyclohexane, methylene chloride are used due to their solubility, dehydration rate, noncombustibility, and workability. To meet the demands concerning environmental issues, the use of some solvents such as toluene, xylene, ethylbenzene, and styrene is restricted bylaws such as the air pollution control law legislated by Ministry of the Environment in Japan (The Ministry of the Environment 1996). 

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