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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Efficient green synthesis of bis(cyclic carbonate) poly(dimethylsiloxane) derivative using CO2 addition: a novel precursor for synthesis of urethanes

Full text
Author(s):
Aguiar, K. R. [1] ; Santos, V. G. [2] ; Eberlin, M. N. [2] ; Rischka, K. [3] ; Noeske, M. [3] ; Tremiliosi-Filho, G. [1] ; Rodrigues-Filho, U. P. [1]
Total Authors: 7
Affiliation:
[1] Univ Sao Paulo, Inst Chem Sao Carlos, Sao Carlos, SP - Brazil
[2] Univ Estadual Campinas, ThoMSon Mass Spectrometry Lab, Campinas, SP - Brazil
[3] Fraunhofer Inst Fertigungstech & Angew Mat Forsch, Bremen - Germany
Total Affiliations: 3
Document type: Journal article
Source: RSC ADVANCES; v. 4, n. 46, p. 24334-24343, 2014.
Web of Science Citations: 20
Abstract

Poly(dimethyl siloxane), PDMS, with terminal cyclic carbonate groups was prepared by cycloaddition of carbon dioxide to epoxy rings using tetra alkyl-ammonium bromide as a catalyst under efficient and mild conditions. The process was carried out under a modest pressure of carbon dioxide (i.e., <2 MPa) and temperature (<200 degrees C). The oligomeric species was found to be a non-Newtonian fluid with low molecular weight (MW similar to 1200 g mol(-1)) with n = xx - yy and thermally stable up to 200 degrees C. Its formation was verified by mid infrared spectroscopy (FT-MIR), Matrix-Assisted Laser Desorption Ionization Mass Spectroscopy MALDI-Tof-MS and multinuclear magnetic resonance (C-13 NMR, Si-29 NMR, H-1 NMR). The urethane synthesis was confirmed by FTIR, NMR and X-ray Photoelectron Spectroscopy (XPS) after reacting amines or diamines, in mild reactions conditions, with bis(cyclic carbonate) poly(dimethylsiloxane). (AU)

FAPESP's process: 13/05279-3 - Poly(dimethylsiloxane) based segmented urethanes biomimetic adhesives Based on CO2 fixation
Grantee:Kelen Menezes Flores Rossi de Aguiar
Support Opportunities: Scholarships abroad - Research Internship - Doctorate
FAPESP's process: 11/08120-0 - Nanostructured films: on the influence of the architecture on Photoactivity properties of films with phosphotungstate and nanoparticles
Grantee:Ubirajara Pereira Rodrigues Filho
Support Opportunities: Regular Research Grants
FAPESP's process: 11/06019-0 - CO2 uptake and synthesis of polyuretanes-polysilicone co-polymers as additives incorporated in ormosils: use on bioactive and ion conducting films
Grantee:Kelen Menezes Flores Rossi de Aguiar
Support Opportunities: Scholarships in Brazil - Doctorate