New Approach in the Synthesis of Hybrid Polymers Grafted with Polyhedral Oligomeric Silsesquioxane and Their Physical and Viscoelastic Properties

Autor:	Jun Xiao, Andre Lee, Frank J. Feher
Rok vydání:	2004
Předmět:	chemistry.chemical_classification Materials science Polymers and Plastics Organic Chemistry Polymer Macromonomer Silsesquioxane Viscoelasticity Styrene Inorganic Chemistry chemistry.chemical_compound chemistry Polymerization Polymer chemistry Materials Chemistry Copolymer Molar mass distribution
Zdroj:	Macromolecules. 38:438-444
ISSN:	1520-5835 0024-9297
DOI:	10.1021/ma047892y
Popis:	Synthesis, chain characteristics, and time-dependent viscoelastic response of polyhedral oligomeric silsesquioxanes (POSS)-containing hybrid polymers were investigated. Unlike many other reported POSS hybrid copolymers works, the POSS-grafted copolymers used in this study, although having different amounts of POSS attachments, have the same degrees of polymerization and molecular weight distribution. This was accomplished by grafting different amounts of aluminosilsesquioxane onto a previously synthesized, random copolymer of styrene and vinyl−diphenylphosphine oxide, PSP. The coordination bonding between aluminum and phosphine oxide is quantitative, which enables the investigation of physical characteristics and viscoelastic response of polymers as influenced only by the POSS attachments. Similar to other hybrid polymers with covalently bonded POSS, we observed a systemic increase in the characteristic relaxation time of polymers at the terminal zone due to the POSS attachment. Linear viscoelastic respon...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::77a410bc565f8bb90c7bf23eb2a2fccb https://doi.org/10.1021/ma047892y Zobrazit plný text záznamu