Open AccessPolyvinyl Butyral Synthesis Process Based on Deep Eutectic Solvent as a Catalyst
Author(s) -
Po Li,
Weilan Xue,
Li Sun,
Yu Bai
Publication year - 2021
Publication title -
asian journal of chemical sciences
Language(s) - English
Resource type - Journals
ISSN - 2456-7795
DOI - 10.9734/ajocs/2021/v10i319095
Subject(s) - polyvinyl butyral , catalysis , acetal , yield (engineering) , polyvinyl alcohol , butyraldehyde , eutectic system , fourier transform infrared spectroscopy , solvent , chemistry , nuclear chemistry , polyvinyl chloride , polymer chemistry , materials science , chemical engineering , organic chemistry , composite material , alloy , engineering
Polyvinyl butyral (PVB) was prepared by the condensation reaction of polyvinyl alcohol (PVA) with n-butyraldehyde using a catalyst which is a kind of deep eutectic solvent (DES) made of dodecyltrimethylammonium chloride and p-toluenesulfonic acid. The raw materials and products were characterized by Fourier transform infrared spectroscopy (FT-IR). The effects of the following reaction conditions on the degree of PVB acetal, yield and agglomeration of the products were investigated: the mass ratio of n-butyraldehyde to PVA (mBA/mPVA) of 0.48-0.96, the mass ratio of catalyst to PVA (mcat/mPVA) of 0.16-0.64, the low temperature reaction temperature (5-20℃), and the low temperature reaction time (1-3h). The results showed that at mBA/mPVA =0.8, mcat/mPVA =0.32, low temperature reaction temperature of 15°C and low temperature reaction time of 2 hours, the obtained PVB was a homogeneous powder with the highest acetal degree of 73.85%.