Hyperbranched shape-memory polyurethanes

Tapping-mode AFM has been used to investigate hyperbranched shape-memory polyurethanes (HB-SMPU). Samples were prepared from 4,4 -diphenylmethane... [Pg.112]

Cao, Q. and P.S. Liu (2006), Structure and mechanical properties of shape memory polyurethane based on hyperbranched polyesters. Polymer Bulletin, 57(6) pp. 889-899. [Pg.228]

It has been found that Mesua ferrea L. seed oil-based thermoplastic hyperbranched polyurethane (HBPU) of the monoglyceride of the oil, PCL (M = 3000 g moT ), 2,4/2,6-toluene diisocyanate and glycerol with 30% hard segment (NCO/OH = 0.96), exhibit thermoresponsive shape memory properties. The shape recovery (88,91 and 95%) and shape retention (70, 75 and 80%) are also found to be different at different temperatures (50, 60 and 70°C respectively). Bisphenol-A-based epoxy resin modified... [Pg.241]

H. Deka and N. Karak, Shape-memory property and characterization of epoxy resin modified Mesua ferrea L. seed oii based hyperbranched polyurethane , J Appl Polym Sci, 2010,116,106-15. [Pg.245]

Abstract This chapter describes vegetable oil-based polymer nanocomposites. It deals with the importance, comparison with conventional composites, classification, materials and methods, characterisation, properties and applications of vegetable oil-based polymer nanocomposites. The chapter also includes a short review of polymer nanocomposites of polyester, polyurethanes and epoxies based on different vegetable oils and nanomaterials. The chapter shows that the formation of suitable vegetable oil-based polymer nanocomposite can be considered to be a means of enhancing many of the desirable properties of such polymers or of obtaining materials with an intrinsically new set of properties which will extend their utility in a variety of advanced applications. Vegetable oil-based shape memory hyperbranched polyurethane nanocomposites can be sited as an exampie of such advanced products. [Pg.271]

Images of different states of shape memory MWNT/ hyperbranched polyurethane nanocomposites. [Pg.295]

H. Deka, N. Karak, R. D. Kahta and A. K. Buragohain, Biocompatible hyperbranched polyurethane/multi-waUed carbon nanotube composites as shape memory materials . Carbon, 2010,48, 2013-22. [Pg.307]

Ali ES, Zubir SA, Ahmad S (2012) Clay reinforced hyperbranched polyurethane nanocomposites based on pahn oil polyol as shape memory materials. Adv Mater Res 548 115-118... [Pg.347]

Kalita H, KarakN (2013) Hyperbranched polyurethane/Fc304 thermosetting nanocomposites as shape memory materials. Polym Bull 70(ll) 2953-2965... [Pg.349]

Kalita H, Karak N (2013) Bio-based hyperbranched polyurethane/Fe304 nanocomposites as shape memory materials. Polymer Adv Technol 24(9) 819-823... [Pg.349]

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