This work examines four polystyrene (PS) resins and PS resins with fillers. The materials are processed into sheets and then the sheets are foamed at various supercritical conditions. The morphology of the foam is studied and a large porous PS foam is also developed for a vacuum insulation panel.
1. Martini, J. , Waldman, F. and Suh, N.P. (1982). The Production and Analysis of Microcellular Thermoplastic Foams , SPE ANTEC Proceedings, 28: 674-676 .
2.
2. Stafford, C.M. , Russell, T.P. and McCarthy, T.J. (1999). Expansion of Polystyrene Using Supercritical Carbon Dioxide; Effects of Molecular Weight, Polydispersity, and Low Molecular Weight Components , Macromolecules, 32: 7610-7616 .
3.
3. Colton, J.S. and Suh, N.P. (1987). The Nucleation of Microcellular Thermoplastic Foam with Additives: Part II: Experimental Results and Discussion , Polymer Eng. and Sci., 27: 493-499 .
4.
4. Colton, J.S. and Suh, N.P. (1987). Nucleation of Microcellular Foam: Theory and Practice , Polymer Eng. and Sci., 27: 500-503 .
5.
5. Goel, S.K. and Beckman, E.J. (1994). Generation of Microcellular Polymeric Foams Using Supercritical Carbon Dioxide I: Effect of Pressure and Temperature on Nucleation , Polymer Eng. and Sci., 34: 1137-1147 .
6.
6. Rodeheaver, B.A. (1999). Open-celled Microcellular Thermoplastic Foam, MS Thesis, Georgia Institute of Technology.
7.
7. Rodeheaver, B.A. and Colton, J.S. (2001). Open-celled Microcellular Thermoplastic Foam , Polymer Eng. and Sci., 41: 380-400 .
8.
8. Lanzani, F. and Mauri, R. (1998). EP 0849309.
9.
9. Shmidt, C.D., Imeokparia, D.D., Suh, K.W., Malone, B.A. and Franklin, K. (1996). WO Patent 96/34038.
10.
10. Shmidt, C.D., Suh, K.W., Imeokparia, D.D., Malone, B.A. and Franklin, K. (1999). US Patent 5,869,544.
11.
11. Park, C.P., Chaudhary, B. and Imeokparia, D.D. (2000). US Patent 6,093,752.
12.
12. Park, C.P., Chaudhary, B. and Imeokparia, D.D. (2001). US Patent 6,174,471.
