Quantitative estimation of film forming polymer-plasticizer interactions by the Lorentz-Lorenz Law.
Molar refraction as well as refractive index has many uses. Beyond confirming the identity and purity of a compound, determination of molecular structure and molecular weight, molar refraction is also used in other estimation schemes, such as in critical properties, surface tension, solubility parameter, molecular polarizability, dipole moment, etc. In the present study molar refraction values of polymer dispersions were determined for the quantitative estimation of film forming polymer-plasticizer interactions. Information can be obtained concerning the extent of interaction between the polymer and the plasticizer from the calculation of molar refraction values of film forming polymer dispersions containing plasticizer.
Dredán
J
J
Department of Pharmaceutics, Semmelweis University, H-1092 Hogyes E. Str. 9., Budapest, Hungary. drej@hogyes.sote.hu
Zelkó
R
R
Dávid
A Z
AZ
Antal
I
I
D002626:Chemistry, Pharmaceutical; D003998:Dicarboxylic Acids / Q000737:chemistry; D008956:Models, Chemical; D010968:Plasticizers / Q000737:chemistry*; D011092:Polyethylene Glycols / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*; D011109:Polymethacrylic Acids / Q000737:chemistry; D012031:Refractometry; D014215:Triacetin / Q000737:chemistry
D003998:Dicarboxylic Acids; D010968:Plasticizers; D011108:Polymers; D011109:Polymethacrylic Acids; C038300:methylmethacrylate-methacrylic acid copolymer; D011092:Polyethylene Glycols; C055481:dibutyl sebacate; D014215:Triacetin