Graft-polymerization of phosphine functionalized monomers onto silica particles |
| |
Authors: | Omar Urzúa-Sánchez Angel Licea-Claveríe Jenomelín González Leonel Cota Felipe Castillón |
| |
Affiliation: | (1) Instituto Tecnológico de Tijuana, Centro de Graduados e Investigación, A.P. 1166, 22000, Tijuana, B.C., México e-mail: aliceac@tectijuana.mx, Fax : (+52-664)-623-3772, MX;(2) UNAM, Centro de Ciencias de la Materia Condensada, A.P. 2681; 22800, Ensenada, B.C., México, MX |
| |
Abstract: | Summary
Triphenylphosphine (PPh3), a well-known reagent and catalyst, was successfully grafted onto silica particles in a functionalized polymer form using
4-(diphenylphosphinyl)styrene as a monomer. 4-(Diisopropylphosphinyl)styrene and 4-(ditertbutylphosphinyl)styrene were also
grafted onto silica in the form of a functionalized polymer and oligomer, respectively. Two methods were used: A) Copolymerization
of phosphine-functionalized monomers with a vinyl compound previously attached to silica; and B) Polymerization of phosphine-functionalized
monomers using a radical initiator previously attached to silica. The resulting materials were characterized by FTIR, DTA-TGA,
specific surface area (SBET) and XPS. The best results in grafting percent and molecular weight of the grafts were obtained by method B.
Received: 7 February 2002 /Revised: 10 July 2002/ Accepted: 10 July 2002 |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|