title: Biomaterials based on new polyurethane and hydrolyzed collagen, k-elastin, hyaluronic acid and chondroitin sulfate.
abstract: In this paper biomaterials based on various polyurethane formulations have been physically characterized by FT-IR spectroscopy, contact angle measurements, DSC, TG/DTG and SEM methods. It has been established that the transition temperatures of soft and hard segments of polyurethane (glass transition or melting) depend on the blend composition. The melting temperature varies from 54.2 to 81.9°C for soft segments, and from 220 to 235°C for hard segments. FT-IR spectrometry allows identifying the functional groups involved in interactions and consequently the changes in polymer chain mobility. From SEM images, is evident that polyurethanic film is porous and spongious. By adding of the others components such as hydrolyzed collagen, elastin, chondroitin sulfate or hyaluronic acid, a reduction of porosity of films was obtained.
authors.affiliation: Petru Poni Institute of Macromolecular Chemistry, Department of Physical Chemistry of Polymers, 41A Grigore Ghica Voda Alley, Iasi 700487, Romania. cpopescu@icmpp.ro
authors.forename: Maria Cristina
authors.initials: MC
authors.lastname: Popescu
authors.forename: Cornelia
authors.initials: C
authors.lastname: Vasile
authors.forename: Doina
authors.initials: D
authors.lastname: Macocinschi
authors.forename: Maria
authors.initials: M
authors.lastname: Lungu
authors.forename: Oana
authors.initials: O
authors.lastname: Craciunescu
mesh_terms: D000818:Animals; D001672:Biocompatible Materials / Q000138:chemical synthesis*; D002152:Calorimetry, Differential Scanning; D002417:Cattle; D002809:Chondroitin Sulfates / Q000737:chemistry*; D003094:Collagen / Q000737:chemistry*; D004549:Elastin / Q000737:chemistry*; D006801:Humans; D006820:Hyaluronic Acid / Q000737:chemistry*; D006868:Hydrolysis; D007700:Kinetics; D008855:Microscopy, Electron, Scanning; D011140:Polyurethanes / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013500:Surface Tension; D013818:Thermogravimetry
chemical_list: D001672:Biocompatible Materials; D011140:Polyurethanes; D006820:Hyaluronic Acid; D002809:Chondroitin Sulfates; D003094:Collagen; D004549:Elastin