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Highlights Fiberglass‐reinforced composites are extensively utilized in a diverse range of fields. Nonetheless, relying on the high shear forces generated during twin screw extruder processing to enhance the dispersion and distribution of glass fibers (GFs) can result in GF breakage and the degradation of the molecular chains of polyamide (PA). Consequently, this leads to a diminished performance of the composite material. In this study, high‐performance PA6/GF composites were effectively fabricated through the utilization of a dual‐speed non‐twin screw extruder operating within a chaotic field. Furthermore, optimization was achieved by substituting the kneading block (KB) with a perturbation ring element (PRE). In this paper, a comparative analysis was conducted between the flow fields and experimental results obtained from varying thread arrangements. The result indicates that, in comparison to KB with discontinuous structures and sudden geometric shapes, PRE elements possessing open structure in both the transverse and longitudinal directions effectively mitigated the shear effect and residence time during processing. This led to the significant enhancement of the residual length of the GF, molecular weight of PA6, heat distortion resistance and thermal stability of the composites. Additionally, enhanced performance was observed in PA6/GF composites prepared using the PRE configuration. Specifically, PA6/GF composites prepared by PRE S3 configuration showed outstanding impact strength of 13.3 kJ/m2 and a tensile strength of 151.6 MPa, representing respective increases of 15.7% and 6.9% compared with those prepared using the twin screw extruder (TSE). This work introduced an innovative device and molding technique for the production of high‐performance fiber‐reinforced polymer composites. High‐performance PA/GF was successfully manufactured by non‐twin screw extruder. The modified non‐twin screw leaded to better dispersion and distribution of GF. The damage of fiberglass and the degradation of PA were significantly reduced. The mechanical properties were significantly improved without using additives. The heat distortion resistance and thermal stability of PA/GF were improved. [ABSTRACT FROM AUTHOR]

Creatinine is an essential biomarker for the clinical diagnosis and treatment of renal insufficiency. Although fluorescent methods are powerful tools for creatinine detection, almost all reported fluorescent probes rely on short-wavelength excitation and a single fluorescent signal, making them susceptible to environmental and operational conditions. In this study, a near-infrared excited, highly sensitive, and multi-output signal sensing system was established using upconversion nanoparticles and 3,5-dinitrobenzoic acid (DNBA) for synergistic luminescent and colorimetric assay for strong visual detection of creatinine. DNBA undergoes a specific colorimetric reaction with creatinine, quenching the green upconversion luminescence (UCL) while leaving the red UCL unaffected, thus constructing the luminescent and colorimetric sensing modes for creatinine. The designed near-infrared excited sensing system eliminates auto-fluorescence with a multi-output signal, thereby enhancing the sensitivity and convenience of creatinine detection. Under optimal conditions, the detection limit in the colorimetric mode is 26 nM, while the detection limit in the luminescent mode is 2 nM. Moreover, a portable sensing platform is further developed, demonstrating sensitive sensing performance and paving a new way for point-of-care testing (POCT) of human body fluid biomarkers., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2025 Elsevier B.V. All rights reserved.)