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Solution Cross-Linked Poly ( isobutylene ) Gels : Synthesis and Swelling Behavior
| Content Provider | Semantic Scholar |
|---|---|
| Author | Okay, Oguz Durmaz, Selda Erman, Burak |
| Abstract | We prepared several series of PIB gels starting from butyl rubber in dilute toluene solutions using sulfur monochloride as a cross-linking agent. By using solution and suspension cross-linking techniques, PIB gels in the form of rods or beads in the size range of 0.1-2 mm were prepared and subjected to swelling in solvent-nonsolvent mixtures. The swelling capacity of the gels in toluene increased with decreasing concentration of sulfur monochloride or butyl rubber in the organic phase. The solubility parameter of the solution cross-linked PIB gels was found to be 16.8 ( 0.8 MPa0.5, in accord with the reported value for bulk cross-linked gels. In toluene-methanol mixtures, PIB gels with 4% cross-linker content exhibited an abrupt deswelling when the toluene content of the external solution was decreased from 97 to 90%. By using the theory of equilibrium swelling, it was shown that the gel passes through critical conditions as the quality of the solvent becomes poorer. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://web.itu.edu.tr/okayo/pdf/00erman1.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Bead Dosage Form Behavior Therapy Edema Gel Methanol Pebibyte Poly A Population Parameter Rod Photoreceptors Solutions Suspensions Technetium Tc 99m Sulfur Colloid Toluene isobutylene mixture |
| Content Type | Text |
| Resource Type | Article |
