CYCLOPENTYL TRISILANOL SILSESQUIOXANES – MODIFIED NATURAL RUBBER (CpSSQ(OH)3 – ENR-50) NANOCOMPOSITE IN THE PRESENCE OF TIN (II) CHLORIDE DIHYDRATE
ABSTRACT: A nanocomposite
comprising cyclopentyl trisilanol silsesquioxanes (CpSSQ(OH)3) and 50%
epoxidized natural rubber (ENR-50) was prepared at reflux temperature with Tin
(II) chloride dihydrate (SnCl2.2H2O) as catalyst. SnCl2.2H2O was found to be an
affective catalyst to promote ring opening in ENR-50 and tailored it to
CpSSQ(OH)3 via chemical reaction. The generation of carbonyl functional groups
arising from epoxide ring opening can be clearly seen in FTIR spectra. 1H and
29Si NMR analyses further proved that the incorporation of CpSSQ(OH)3 in
ENR-50 occured. TGA studies showed a degradation temperature with 10%
weight decreased and DSC thermogram indicates a single Tg. Single peak in XRD
diffractogram at 2-Theta angle further confirmed the surface modification.
Author: H. Rosniza*, M.A.
Bakar, S. Abdul Hamid, and J. Ismail
Journal Code: jpkimiagg070008
