Abstracts Book - IMRC 2018

• SB1-P084
CATIONIC POLYGLYCEROL ASSISTED BY MICROWAVE
IRRADIATION
Juan David Monroy Avila 1,2 , Luis Carlos Fonseca Herreño 1,2 , Viatcheslav Kafarov 1 , Andrea Juliana
Garzón Sanabria 1 , Gustavo Emilio Ramírez Caballero 2
1
Universidad Industrial de Santander, Centro de Investigación para el Desarrollo Sostenible en
Industria y Energía (CIDES), Colombia. 2 Universidad Industrial de Santander, Grupo de
Investigación en Polímeros, Colombia.
Glycerol is a renewable and environmentally friendly chemical building block
that can be converted by polymerization and functionalization in a cationic
polymer to be possibly used for flocculation industry. An innovative route to
develop a glycerol-based material, is a direct glycerol etherification reaction to
Polyglycerol (PG), in solvent free condition and then a PG cationization using a
quaternary amine in aqueous solution employing a microwave (MW) as a
heating system due to microwave-assisted organic synthesis has been reported
to have short reaction times, because of specific effects of radiation, such as
homogeneity in temperature and a faster temperature rise. This research
focuses on synthesis of cationic polyglycerol (CPG) employing sodium hydroxide
as catalyst, MW as heating system and CHPTAC as the etherifying reagent to
introduce quaternary amine group onto the backbone of polymer. Firstly,
glycerol etherification study was made according to three parameters,
temperature, catalyst concentration and reaction time until reaching relative
high molecular weight PG. For PG-CHPTAC etherification, the reaction
parameters are temperature, NaOH:PG[-OH] (0.1, 0.3:1) and CHPTAC:PG[-OH]
(0.5, 1, 1.5:1) molar ratios, under nitrogen atmosphere and a low vacuum
pressure. PG and CPG were characterized using ATR-FTIR, GPC. Promising
results have been obtained. According to ATR-FTIR spectra, the [-OH] peaks at
3360 cm -1 had a great reduction due to the PG-Q reaction; increase in 2930-2880
cm -1 bands related to [C–H] stretching; main increment at 1400-1480 cm -1
corresponding to incorporation of [C–N] band and methyl groups of quaternary
ammonium bond at different PG-Q reaction times; strong increments between
1150-1060 cm -1 bands of newly ether bond formed; great reduction presented
at [C-Cl] band between 760-505 cm -1 due to halide consumption, confirmed by
NaCl formation after reaction procedure. It can be concluded that a relative high
molecular weight PG was obtained using 1.5%w NaOH as catalyst under
microwave irradiation. Cationic CHPTAC molecules were successfully
functionalized onto the backbone of PG without secondary reactions