Abstract
Polypropylene grafted with maleic anhydride and styrene [PP- g-(MAH- co-St)] was prepared by melt grafting. Fourier transform-infrared spectroscopy showed that maleic anhydride in the form of cyclic anhydride was successfully grafted onto the main chains of polypropylene. PP- g-(MAH- co-St) acts as a compatibilizer for the poly(propylene carbonate)/polypropylene meltblown nonwoven fabric slices. The effect of different contents and grafting proportions of PP- g-(MAH- co-St) on the structure and performance of the poly(propylene carbonate)/polypropylene slices was investigated. The poly(propylene carbonate)/polypropylene slices had favorable compatibility, tensile properties, thermal stability, and degradability, and their melt flow rates were reduced by the addition of PP- g-(MAH- co-St). Fourier transform-infrared spectroscopy and 1H nuclear magnetic resonance spectroscopy spectra showed that ring-opening reactions occur between the anhydride functional groups of PP- g-(MAH- co-St) and poly(propylene carbonate). Ring-opening reactions, chemical bonds, cocrystallization, increased interface adhesion forces, and reduced interfacial tension may be the mechanisms by which PP- g-(MAH- co-St) acts a compatibilizer for poly(propylene carbonate)/polypropylene slices.
Highlights
Polypropylene (PP), one of the most versatile polymers currently available, is widely used in many fields, such as in automobiles, electronics, packaging, building materials, and fibers, because of its low cost, high thermal stability, stable chemical properties, and water insolubility.[1]
The characteristic peak of St was clearly observed at 703 cm−1. These results indicate that maleic anhydride (MAH) and St were successfully grafted onto the main chains of PP
The results indicate that ring-opening reactions between the anhydride functional groups of MAH occur on the main chains of PP-g-(MAH-co-St) and PPC.[23]
Summary
Polypropylene (PP), one of the most versatile polymers currently available, is widely used in many fields, such as in automobiles, electronics, packaging, building materials, and fibers, because of its low cost, high thermal stability, stable chemical properties, and water insolubility.[1]. This study prepared biodegradable PPC/PP meltblown nonwoven fabric slices by melt blending and varying the raw material rates to produce PP-g-(MAH-co-St) with different grafting proportions as a compatibilizer for PPC/PP slices. The effect of the contents and grafting proportions of PP-g-(MAH-co-St) on the compatibility, tensile, melt flow rate (MFR), thermal, and degradation properties of PPC/PP meltblown nonwoven fabric slices was investigated. PP-g-(MAH-co-St) with three grafting proportions (GMAH) were prepared by varying experimental conditions such as the raw material ratio, processing temperature, and processing time.
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