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Oxidation reactions in kink banded regions of UHMMPE fiber-based laminates used in body armor: A mechanistic study

Tsinas, Zois; Forster, Amanda L.; Al-Sheikhly, Mohamad

Customer publications

Oxidation reactions in kink banded regions of UHMMPE fiber-based laminates used in body armor: A mechanistic study

Tsinas, Zois; Forster, Amanda L.; Al-Sheikhly, Mohamad

This work demonstrates the synergy between the thermo-mechanical and humidity induced degradation as well as the oxidation reactions in the kink-banded areas of ultra-high molar mass polyethylene (UHMMPE) fiber-based laminates used in body armor. For aged materials, the energy-dispersive X-ray spectroscopy (EDS) and Fourier transform infrared spectroscopy (FTIR) results reveal…
Large strain cavitation induced stress whitening in propylene-butene-1 copolymer during stretching

Lyu, Dong; Tang, Yujing; Qian, Li; Chen, Ran; Lu, Ying; Men, Yongfeng

Customer publications

Large strain cavitation induced stress whitening in propylene-butene-1 copolymer during stretching

Lyu, Dong; Tang, Yujing; Qian, Li; Chen, Ran; Lu, Ying; Men, Yongfeng

Large strain cavitation induced stress whitening was observed in propylene-butene-1 copolymer during stretching by means of ultra-small angle X-ray scattering technique. The critical stress for initiating this cavitation depended on the stretching temperature (Ts). A constant critical stress was found below Ts of 125 °C while the stress started to increase…
Shear-Induced Transformation of Polymer-Rich Lamellar Phases to Micron-Sized Vesicles

Großkopf, Sören; Tiersch, Brigitte; Koetz, Joachim; Mix, Andreas; Hellweg, Thomas

Customer publications

Shear-Induced Transformation of Polymer-Rich Lamellar Phases to Micron-Sized Vesicles

Großkopf, Sören; Tiersch, Brigitte; Koetz, Joachim; Mix, Andreas; Hellweg, Thomas

In the present work, we study the shear-induced transformation of polymer-rich lamellar phases into vesicles. The evolution of vesicle size is studied by different scattering techniques, rheology, and microscopy methods. The lamellar phase found in the system D2O/o-xylene/Pluronic PE9400/C8TAB can be fully transformed to multilamellar vesicles (MLVs) by applying shear.…
Poly(oxymethylene)/poly(butylene succinate) blends: Miscibility, crystallization behaviors and mechanical properties

Jiao, Qi; Shen, Jieqing; Ye, Lijun; Li, Yongjin; Chen, Hualin

Customer publications

Poly(oxymethylene)/poly(butylene succinate) blends: Miscibility, crystallization behaviors and mechanical properties

Jiao, Qi; Shen, Jieqing; Ye, Lijun; Li, Yongjin; Chen, Hualin

In this work, we investigated the miscibility, crystallization behaviors and mechanical properties of the crystalline/crystalline poly(oxymethylene)/poly(butylene succinate) (POM/PBSU) blends. It was found that POM and PBSU are miscible in the melt state. The POM with a higher melting temperature (Tm) crystallizes first into banded spherulites and the crystals fill the…
Enhanced Oxidation Stability of Transparent Copper Films Using a Hybrid Organic-Inorganic Nucleation Layer

Bellchambers, Phillip; Walker, M.; Huband, Steven; Dirvanauskas, A.; Hatton, Ross Andrew

Customer publications

Enhanced Oxidation Stability of Transparent Copper Films Using a Hybrid Organic-Inorganic Nucleation Layer

Bellchambers, Phillip; Walker, M.; Huband, Steven; Dirvanauskas, A.; Hatton, Ross Andrew

We report a novel seed layer for the formation of slab-like transparent copper films on glass and plastic substrates, based on a mixed molecular monolayer and an ultra-thin (0.8 nm) aluminium layer both deposited from the vapour phase, which substantially outperforms the best nucleation layer for optically thin copper films…
In-flight modification of Ni nanoparticles by tubular magnetron sputtering

Kretkova, Tereza; Hanuš, Jan; Kylian, Ondrej; Solař, Pavel; Dopita, Milan; Cieslar, Miroslav; Choukourov, Andrei; Biederman, Hynek

Customer publications

In-flight modification of Ni nanoparticles by tubular magnetron sputtering

Kretkova, Tereza; Hanuš, Jan; Kylian, Ondrej; Solař, Pavel; Dopita, Milan; Cieslar, Miroslav; Choukourov, Andrei; Biederman, Hynek

Abstract Tubular magnetron was used for in-flight deposition of Cu over Ni nanoparticles (NPs) pre-synthesized in a planar magnetron-based gas aggregation cluster source. The amount of deposited copper was driven by magnetron current and magnetic field of the tubular magnetron. Structure of the resultant NPs was investigated by TEM, STEM,…