Synthesis of a maleic anhydride grafted polypropylene–butadiene copolymer and its application in polypropylene/styrene–butadiene–styrene triblock copolymer/organophilic montmorillonite composites as a compatibilizer

Abstract

A maleic anhydride grafted propylene-butadiene copolymer (MPPB) was prepared. Fourier transform infrared spectroscopy and 1 H-NMR results indicate that the maleic anhydride molecules reacted with the double bond in the butadiene unit of the propylene-butadiene copolymer (PPB), and the grafting percentage increased with the butadiene content in the initial copolymer. The gel permeation chromatography results show that the introduction of butadiene in the copolymer prevented the degradation of PPB. The MPPB was applied in polypropylene (PP)/styrene-butadiene-styrene triblock copolymer (SBS)/organophilic montmorillonite (OMMT) composites as a compatibilizer. In the presence of 10-phr MPPB, the impact strength of the composite was improved by about 20%. X-ray diffraction patterns indicated the formation of the b-phase crystallization of PP in the presence of MPPB, and a significant decrease in the spherulite size was observed. Transmission electron microscopy (TEM) images showed that the OMMT was better dispersed in the matrix upon the inclusion of MPPB. A better distribution of the rubber phase and a rugged fracture surface were observed in the scanning electron microscopy images as the MPPB proportion was increased.

Effect of maleic anhydride on the damping property of magnetorheological elastomers

“…To this end, maleic anhydride (MA) was selected as the compatibilizer to modify the interfaces of the MREs and consequently decrease the damping property. This is because MA modified polymer can enhance the compatibility in polymer composites [17,18].…”

Photodegradation of some low‐density polyethylene–montmorillonite nanocomposites containing an oligomeric compatibilizer

“…A further characteristic band for the cyclic anhydride is the C–O–C band that appears at 1220 cm −1 . The peaks in the spectra between 1000 cm −1 and 1160 cm −1 for the composites belong to the modified and nonmodified Cloisite, with the peaks at 1040 and 1050 cm −1 corresponding to Si–O–Si stretching vibrations of the clay …”

“…The peaks in the spectra between 1000 cm 21 and 1160 cm 21 for the composites belong to the modified and nonmodified Cloisite, with the peaks at 1040 and 1050 cm 21 corresponding to Si-O-Si stretching vibrations of the clay. 33,34 New bands appear in the ATR-FTIR spectra of LDPE, LDPE-PEBAMA, LDPE-PEBAMA-MMT-5%, and LDPE-PEBAMA-OMMT-5% after exposure in the Weatherometer. The spectra in Figure 4 show the appearance of new peaks in the carbonyl region for LDPE at different exposure times.…”