Synthesis and photoinitiated cationic polymerization of monomers with the silsesquioxane core

Autor:	James V. Crivello, Ranjit Malik
Rok vydání:	1997
Předmět:	Materials science Polymers and Plastics Hydrosilylation Organic Chemistry Cationic polymerization Ring-opening polymerization Silsesquioxane chemistry.chemical_compound Photopolymer Monomer chemistry Polymerization Polymer chemistry Materials Chemistry Prepolymer
Zdroj:	Journal of Polymer Science Part A: Polymer Chemistry. 35:407-425
ISSN:	1099-0518 0887-624X
Popis:	A synthetic scheme was developed to prepare cationically polymerizable octafunctional monomers with silsesquioxane (T8) cores. Epoxy and 1-propenoxy functional groups were attached to the core by the hydrosilation of T with an appropriate precursor. The steric constraints and the requirements for the hydrosilation reaction are discussed. The monomers were fully characterized and then polymerized by exposure to ultraviolet irradiation in the presence of onium salt photoinitiators. The polymerization conditions for the monomers were optimized and compared with each other using real-time infrared spectroscopy. Thermal analysis was also performed on the resulting crosslinked polymers. © 1997 John Wiley & Sons, Inc.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4f0c9cbd0226e8dc30a0b65ef9fe6196 https://doi.org/10.1002/(sici)1099-0518(199702)35:3<407::aid-pola3>3.0.co Zobrazit plný text záznamu Plný text