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In this work, the antistatic effect of antistatic agent (AA) on semi-aromatic poly (decamethylene terephthalamide) (PA10T) with 30 wt.% glass fiber (GF) was investigated. The PA10T/AGF antistatic composites with excellent thermal characteristics, balanced toughness, and notched impact strength were prepared through one-step melt blending, and added the AA and GF to the PA10T matrix.Meanwhile, the structure, morphology, thermal properties, and mechanical properties were examined in detail by FT-IR, SEM, TGA, DSC, and tensile and impulse testing. The results showed that the antistatic GF dispersed well in the PA10T matrix and interacted well with the PA10T matrix. The antistatic properties increased with the increase of AA content, and AA/GF-5 composites had the best antistatic effect when AA content was 25 wt.%. However, with the increase of AA content, the melt temperature of PA10T/AGF composites decreased, while the machining performance and thermal stability of PA10T/ AGF composites increased. The composites' tensile strength and breaking elongation followed a rising and falling pattern with increasing AA concentration. Notwithstanding, the notched impact strength of PA10T/AGF composites decreased and then increased. Therefore, this work provides us with a deep understanding of the antistatic effect of AA on polymers.

This work synthesized the pure poly (decamethylene terephthalamide) acid (PA10T) and a series of PA10T/10I through an efficient one‐pot melt polymerization method. The structures, thermal behavior, crystallization performance, and mechanical properties of PA10T and PA10T/10I were investigated by FT‐IR, DSC, TGA, POM, XRD, and mechanics performance testing, respectively. The thermal analysis demonstrates that the melting temperature of PA10T/10I gradually decreased with the increase of isophthalic acid (IPA) copolymerization proportions. Specifically, it was observed that, the Tm1 of pure PA10T was 299.5°C, while the Tm1 of PA10T/10I‐4 with a linear downward trend was 284.7°C. And the introduction of IPA copolymerization has an obvious beneficial effect on the thermal stability of PA10T/10I (Td,5 varied from 429.5 to 434.5°C) with a wider temperature range of processing, which could potentially be applied in high‐temperature scenes. POM and XRD were used to characterize the crystallization behavior of all samples further. It was discovered that although adding IPA did not alter the crystal structure of PA10T, it dramatically reduced the size of crystalline grains and increased the number of crystal nuclei. In addition, the copolyamides possess excellent mechanical properties, and the tensile strength of PA10T/10I varied between 42.91 and 46.89 MPa, the bending strength varied between 76.69 and 85.83 MPa, and the izod impact strength varied between 25.41 and 29.82 kJ m−2. Moreover, the influence of the IPA comonomer of copolyamides PA10T/10I on melting points, thermal stability, crystallization behavior, and mechanical characteristics was investigated. This work provides a reference for preparing biobased semi‐aromatic copolyamides PA10T/10I with outstanding processing performance, excellent thermal characteristics, and adjustable mechanical properties.

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In this study, the M@MgSO 4 whiskers (MOSw) are successfully prepared by the surface treatment of MOSw. Then, using polybutylene succinate (PBS) as the matrix and M@MOSw as the filler, the PBS/M@MOSw and PBS/MOSw composite films were prepared. The Fourier transform infrared spectroscopy and scanning electron microscopy results show that the PBS was successfully coated on the surface of MOSw. With the introduction of the M@MOSw, it has been improved the MOSw and the PBS dispersibility and interface compatibility obviously. After the addition of the M@MOSw or MOSw in the PBSbased composites, not only does the crystallization rate improve, but also the crystal size and structure changes. The PBS/M@MOSw composites show excellent mechanical properties. When the with 10 wt% M@MOSw loading, the tensile strength of the PBS/M@MOSw composites is 34.67 MPa, which is 9.3% higher than that of pure PBS. Meanwhile, when the M@MOSw with 20 wt% loading, the bending strength of PBS/M@MOSw increases significantly, reaching 45.26 MPa, which is improved 35.55% than that of pure PBS.