Język Polski
English
Published
: 2009-03-15
Chemical structures and physical properties of cured segmental polyurethanes
Abstract
Segmental polyurethanes (PUR) obtained in two-stage syntheses from oligomeric ?,?-dihydroxy(ethylene-butylene adipate) and two different aromatic diisocyanates: diphenylmethane 4,4'-diisocyanate (MDI) or MDI modified with carbodiimide diisocyanate were the subjects of investigations. For chain extending the curing triol 1,3-dihydroxy-2-(hydroxymethylene)propane (TMP) was used, besides typical 1,4-butanediol (Table 1). The chemical structures of PUR obtained were characterized by IR method (Table 4, Fig. 1). The effects of PUR compositions (type of diisocyanate, diol/triol ratio in the curing system and its amount) on the equilibrium swelling in dimethylformamide (Table 2 and 3) as well as mechanical properties (Table 5) were determined. The results were discussed from the point of view of peculiarity of structure of the network forming.
Details
References
Statistics
Authors
Zasady cytowania
Janik, H., & Balas, A. (2009). Chemical structures and physical properties of cured segmental polyurethanes. Polimery, 54(3), 195-201. Retrieved from https://ichp.vot.pl/index.php/p/article/view/1190
