Polyurethane Hyperbranched polymer-based

Vegetable oil-based hyperbranched polymers have considerable potential in biomedical applications. This is due to their unique structural characteristics along with their biodegradability and biocompatibiUty. Preliminary studies show that vegetable oil-based hyperbranched polyurethanes have the potential to be used as biomaterials in biomedical applications such as drug delivery systems, biomedical smart materials and catheters. ... 

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. 

Some hyperbranched polyurethanes with different compositions based on Mesua ferrea L. seed oil, sunflower oil, and so on, have been prepared by using monoglyceride and glycerol or monoglyceride with hyperbranched polyol. Hyperbranched polyurethanes have been prepared from soybean oil-modified hyperbranched polyol obtained via epoxidation and hydrofor-mylation. Castor oil-based hyperbranched polyurethanes have been synthesised using castor oil as the B3 monomer in an A2 -1- B3 approach. The A2 monomer, -NCO terminated pre-polymer was obtained by reacting MDI with PCL. The urethane reaction was carried out at ca. 110°C in the... 

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. 

H. Deka and N. Karak, Rheological study of vegetable oil based hyperbranched polyurethane/multi-walled carbon nanotube nanocomposites , Polym-Plastics Technol Eng, 2011,50,797-803. 

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

Deka H, Karak N, Kalita RD, Buragohain AK. Bio-based thermostable, biodegradable and biocompatible hyperbranched polyurethane/Ag nanocomposites with antimicrobial activity. Polym Degrad Stab June 2010 95 1509-17. 

Marija Pergal, MSc, works at the Department for Polymeric Materials, Institute for Chemistry, Technology and Metallurgy since 2003 as Research Scientist. Since 2007 she is also Teaching Assistant for the course Chemistry of Macromolecules at Department of Chemistry, University of Belgrade. Her research interests are focused on synthesis and characterization of siloxane homopolymers and copolymers, especially thermoplastic elastomers based on poly(butylene terephthalate) and polyurethanes, as well as polyurethane networks based on hyperbranched polyester. In addition to physico-chemical, mechanical and surface properties of polymers, her particular interest is directed towards the study of biocompatibility of polymer materials. 

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. 

HONG, L., SHI, L., TANG, X., Conductivities and spectroscopic studies of polymer electrolytes based on linear polyurethane and hybrid and copolymer of linear and hyperbranched polyurethanes. Macromolecules, 2003,36,4989-94. 

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