## Abstract Two series of poly(ether urethane)s and one series of poly(ester urethane)s were synthesized, containing, respectively, poly(oxytetramethylene) diol (PTMO) of __M__~__n__~ = 1000 and 2000 and poly(Ξ΅βcaprolactone) diol of __M__~__n__~ = 2000 as soft segments. In each series the same hard
The effect of different molecular weight of soft segments in polyurethanes on photooxidative stability
β Scribed by E.Govorcin Bajsic; V. Rek; A. Sendijarevic; V. Sendijarevic; K.C. Frish
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 939 KB
- Volume
- 52
- Category
- Article
- ISSN
- 0141-3910
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Polyurethanes (PUs) of a suitable molar ratio of monomers were found to have shape-memory behavior. In this study, four series of PUs were synthesized by 4,4-diphenylmethane diisocyanate (MDI), 1,4-butanediol (BD), and various molecular weights of poly(tetramethylene oxide)glycol (PTMO) to study the
## Abstract A series of segmented polyurethanes (SPUs) containing various polyol soft segments was prepared and their resistance to oxidative degradation was investigated after aging in AgNO~3~ solution. The SPU with the polyether soft segment showed a large reduction in mechanical strength after e