Abstract
AbstractIn recent years, there has been an increasing industrial interest in maize straws. In this work, chemical‐treated fibers (CTF) were fabricated based on wasted maize straws by chemical treatment combined with stirring. The experimental results suggest that a part of lignin in CTF was removed after chemical treatment, which resulted in the smooth surface morphology, better thermal stability, and even higher degree of crystallinity of CTF. Furthermore, the CTF were used to composite with polypropylene (PP). With the addition of PP‐g‐MAH and silane coupling agent (SCA), the compatibility between CTF and PP was improved and thus the mechanical performance of PP composites was also improved. At the same time, the tensile strength (54.9 ± 5.4 MPa), Young's modulus (1950 ± 246 MPa), specific strength (49.4 ± 3.9 MPa g−1 cm3) and impact strength (3.6 ± 0.3 kJ/m2) of the PP/CTF/PP‐g‐MAH/SCA (50/50/6/0.95) composite was increased by about 51%, 177%, 20%, and 113% relative to pure PP, respectively. In conclusion, transforming the wasted maize straws into CTF is an effective way to reduce environmental pollution and meet the growing global demand for energy‐saving materials.
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