Small angle X-ray scattering study of microvoid evolution and pertinence of microvoid and mechanical properties in γ-irradiated CFs

Abstract

To explore the mechanism of microvoid evolution and the pertinence of microvoid and mechanical behavior of carbon fibers (CFs) in γ-irradiation, T700 CFs were exposed to γ-rays under epoxy chloropropane (ECP) and argon (Ar) at room temperature.

Laser induced graphitization of PAN-based carbon fibers

“…The biggest increase of Young's modulus of CFs graphitized by CO 2 laser was three times higher than that of g-ray irradiated ones'. 34,35 It should be caused by different lasermaterial interactions. High temperature generated by CO 2 laser's photothermal effect enables the disordered graphitic layers to be moved and rearranged, thereby improving the Young's modulus.…”

Tuning Interface Mechanics Via β-Configuration Dominant Amyloid Aggregates for Lithium Metal Batteries

“…The pore size of the lysozyme membrane was further confirmed by synchrotron radiation small-angle X-ray scattering (SR-SAXS), and a series of parameters of the microvoid was analyzed according to Guinier law by Fankuchen gradual tangent method (Figure 1g). 27 The gyration and micropore radii are 4.52 and 6.81 nm, respectively, and the pore structure is cylindrical. The microporous PVDF electrospun mat and nanoporous lysozyme membrane redistribute the uneven Li-ion flux in the electrolyte and SEI (Figure 1h), which is different from reported protein materials to stabilize Li metal anodes.…”

A photolithography tailored undulating configuration to confine nanostructures on microtubes via a “stress-induced” effect for boosting sodium ion storage

“…48 During the irradiation process, carbon radicals were generated through an ion radical mechanism, producing atomic-level defects such as vacancy and two-dimensional strain. 49 The interlayer structures of the nanosheet and functional groups on single sheets undergo distinct changes via irradiation in various media. For the carbonaceous fibers, a large decrease in the d 002 interlayer spacing has been achieved by gamma irradiation, thus improving the mechanical properties.…”