Syntheses and characterization of maleic anhydride–styrene–allyl propionate terpolymer ester derivatives

Abstract

ABSTRACT:In this study, maleic anhydride (MA)-styrene (St)-allyl propionate (AP) was produced with MA, St, and AP. It was then reacted with n-propyl alcohol (Pr), n-butyl alcohol (Bu), n-pentyl alcohol (Pn), and benzyl alcohol (Bz) under certain conditions to produce ester derivatives of the terpolymer. These ester derivatives were designated alkyl maleate terpolymers (PrMA-St-AP, BuMA-St-AP, PnMA-St-AP, and BzMA-St-AP). The polymers were investigated by solubility and viscosity experiments, with the number of ester groups in the polymers determined by chemical analysis. They were also characterized by Fourier transform infrared spectroscopy, with thermomechanical properties measured via stress-strain curves.

Amine Responsive Poly(lactic acid) (PLA) and Succinic Anhydride (SAh) Graft-Polymer: Synthesis and Characterization

“…In addition, in Figure 2b, the decrease in the peaks in the proximity of the 2850 cm −1 band, corresponding to sp 3 C–H stretch, may suggest the formation of free radicals in the C–H group of PLA [47,48]. Similar to previous reports, the use of ATR-FTIR to monitor relevant bonds involved in the grafting of SAh into PLA can provide some evidence of these reactions [28,43,44,45,46].…”

“…Neat PLA showed characteristic ATR-FTIR peaks at 1751 cm −1 , 1182 cm −1 , 1126 cm −1 , 1081 cm −1 –1035 cm −1 , and 954 cm −1 –872 cm −1 , corresponding to C=O stretching, C–O–C asymmetric stretching, C–OH side group vibrations, –CH stretching, and C–C vibrations, respectively [41,42]. In the ATR-FTIR spectra of neat MAh and PLA- g -SAh50, the peaks at 3120 cm −1 (also displayed in Figure 2b) and 1781 cm −1 correspond to the C=O asymmetric stretching, and at 1859 cm −1 and 1746 cm −1 correspond to the C=O symmetric stretching of cyclic anhydride [28,43,44,45,46]. The presence of these asymmetric and symmetric C=O stretching bands suggest the presence of SAh in the PLA- g -SAh50 and other grafted polymer films.…”

Thermal characterization of n‐alkyl maleate‐styrene‐allyl propionate terpolymers

“…The explanations belong to these spectra, and FTIR spectra of all the polymers have been given in a previous work. 4 TGA curves of MA-St-AP terpolymer and n-alkyl maleate are shown in Figure 1. There was a two-step thermal degradation in all the polymers used.…”

UV-cross-linked block copolymers for initiator-free, controlled in situ gelation of electrolytes in dye-sensitized solar cells

“…The broad band near 1210 cm À1 originated from the C-O-C stretching vibration of the maleic anhydride units. 36,37 The stretching vibration peaks of the aromatic C-H, methylene C-H and C]C rings (3050 cm À1 , 2930-2850 cm À1 , and 1500 cm À1 , respectively) represented the presence of pAS. The 1 H-NMR spectroscopy spectrum (Fig.…”