Model studies on the polyurethane synthesis reaction. Part II. Estimation of model parameters. Simulation of the step-growth polyaddition process

• Autorzy: Król P. , Gawdzik A.
• Języki publikacji: EN

Abstrakty

EN

The numerical estimation was performed for the parameters of the kinetic model developed for the step-growth polyaddition of diisocyanate and diol as described in Part I. Also, our earlier experiments studying the kinetics of the reaction between 2,4- TDI and 1,4-butanediol and utilising the G PC procedure for the analysis of the oligomer fractions produced were utilised. The data obtained were then employed in the simulation of the process investigated to evaluate the temperature and time effects on the conversion degree of the functional groups and on the mean molecular weight of the urethane oligomers formed. The process was studied which was based on the equimolar reaction of diisocyanate and diol, and so was the process involving excess diisocyanate - this condition is specific for the synthesis of prepolymer intermediates. The model developed also made it possible to evaluate the contribution(s) from the substitution group(s) in the diisocyanate molecule to the properties of the polyurethanes formed. The substitution effect was found to modify significantly the reactivity of the products obtained and hence the chemical composition and molecular weight of the polymer mixtures. The computer software was developed on the basis of the model developed earlier. That made it possible to verify the raw materials employed and the step-growth polymerisation processes.

Słowa kluczowe

EN

polyurethane; synthesis; polyaddition; model

PL

poliuretan; synteza; poliaddycja; model

• Wydawca: Centrum Materiałów Polimerowych i Węglowych PAN
• Czasopismo: Polish Journal of Applied Chemistry
• Rocznik: 1999
• Tom: Vol. 43, nr 3-4
• Strony: 223--238
• Opis fizyczny: Bibliogr. 13 poz.

Twórcy

autor

Król P.

• Rzeszów University of Technology, Faculty of Chemistry, Department of Polymer Science, Al. Powstańców Warszawy 6, 35-959 Rzeszów

autor

Gawdzik A.

• Uniwersity of Opole, Department of Process Engineering ul. Oleska 48, 45-951 Opole

Bibliografia

• [1] P. KRÓL, A. GAWDZIK, Pol. J. Appl. Chem., 43, 107 (1999).
• [2] P. KRÓL, J. Appl. Poly. Sci., 69, 169 (1998).
• [3] P. KRÓL., H. GALINA, K. KACZMARSKI, Makromol. Chem. Theory Simul., 8, 129 (1999).
• [4] P. KRÓL, R. CHRZĄSZCZ, Polimery, 39, 6S3 (1994).
• [5] P. KRÓL, M. DEJNEGA, Polimery, 40, 94 (1995).
• [6] P. KRÓL, A. GAWDZK, J. Appl. Polym. Sci., 58, 729 (1995).
• [7] P. KRÓL, M. HENECZKOWSKI, Polimery (1999), in the press.
• [8] P. KRÓL, B. ATAMAŃCZUK, J. PIELICHOWSKI, J. Appl. Polym. Sci., 46, 2139 (1992).
• [9] J.M. REGO, M.A. PASTOR, J.J. CAMPO, J. Appl. Polym. Sci., 38, 237 (1989).
• [10] P. KRÓL, Studia nad kinetyką reakcji otrzymywania liniowych poliuretanów, Rozprawy hab. No 292, Wydawnictwo UJ, Cracow 1995, p. 67.
• [11] P. WRIGHT, A.P.C. CUMMING, Solid Polyurethane Elastomers, Maclaren, London, 1969.
• [12] XIAO YAN HUANG, WEICHING YU, CHONG SOOK PAIK SUNG, Macromolecules, 23, 390 (1990).
• [13] E.P. SQUILER, ROSTHAUSER, Mod. Paint. Coat., 77, 28 (1987).