Transparent and Flexible Films of Thermoplastic Polyurethanes Incorporated by Nano-SiO2Modified With 4,4′-Methylene Diphenyl Diisocyanate

Autor:	S. Azadeh, Hossein Behniafar
Rok vydání:	2014
Předmět:	chemistry.chemical_classification Materials science Thermoplastic Nanocomposite Polymers and Plastics Methylene diphenyl diisocyanate General Chemical Engineering Nanoparticle Polymer Analytical Chemistry chemistry.chemical_compound Silanol Monomer chemistry Polymer chemistry Surface modification
Zdroj:	International Journal of Polymeric Materials and Polymeric Biomaterials. 64:1-6
ISSN:	1563-535X 0091-4037
DOI:	10.1080/00914037.2014.886237
Popis:	4,4′-Methylene diphenyl diisocyanate (MDI) played a dual role for preparing thermoplastic polyurethanes (TPU)/silica nanocomposites; both as monomer to synthesize MDI-capped poly(tetramethylene oxide) (PTMO) and as surface modifier of nano-SiO2 particles. Untreated and/or MDI-treated SiO2 were homogeneously incorporated into the resulting TPU polymer after extension of the chains by 1,4-butanediol (BDO). To modify silica nanoparticles, MDI was grafted to the surface silanol groups of the nanoparticles by forming urethane links. MDI-treated SiO2 (SiO2-MDI) nanoparticles, as well as TPU/untreated SiO2 (TPU/SiO2) and TPU/MDI-treated SiO2 (TPU/SiO2-MDI) nanocomposites were characterized by FT-IR, UV-vis DRS, XRD, SEM, mechanical, and thermal analyses.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0860c5750a7ad6d9d510cf171a95b685 https://doi.org/10.1080/00914037.2014.886237 Zobrazit plný text záznamu