Ding, Lei; Xu, Ruizhang; Pu, Lian; Yang, Feng; Wu, Tong; Xiang, Ming
Pore formation and evolution mechanism during biaxial stretching of β-iPP used for lithium-ion batteries separator
The morphological evolution and pore formation mechanism of different kinds of ?-iPP spherulites during biaxial stretching were analyzed. The smaller radial-growth spherulite deforms heterogeneous, causing a faster reduction in ?-crystal content and higher orientation degree during longitudinal stretching, while the bigger spherulite derived from the hedrites deformed more homogeneous due…
Anisotropic polymer nanoparticles with controlled dimensions from the morphological transformation of isotropic seeds
Hua, Zan; Jones, Joseph R.; Thomas, Marjolaine; Arno, Maria C.; Souslov, Anton; Wilks, Thomas R.; OReilly, Rachel K.
Understanding and controlling self-assembly processes at multiple length scales is vital if we are to design and create advanced materials. In particular, our ability to organise matter on the nanoscale has advanced considerably, but still lags far behind our skill in manipulating individual molecules. New tools allowing controlled nanoscale assembly…
Brønsted acid mediated covalent organic framework membranes for efficient molecular separation
Wang, Hongjian; Chen, Long; Yang, Hao; Wang, Meidi; Yang, Leixin; Du, Haiyan; Cao, Chenliang; Ren, Yanxiong; Wu, Yingzhen; Pan, Fusheng; Jiang, Zhongyi
Covalent organic frameworks (COFs) hold great promise in molecular separation. However, since the aperture size of most COFs is in the range of 0.84.9 nm, constructing COF membranes with a smaller aperture size is thus in urgent demand yet remains a grand challenge. In this study, a Brønsted acid mediated…
Facilitate charge transfer at donor/acceptor interface in bulk heterojunction organic photovoltaics by two-dimensional nanoflakes
Yang, Weitao; Ye, Zhixiang; Liang, Tao; Ye, Jian; Chen, Hongzheng
Recently, two-dimensional (2D) materials have been applied in organic photovoltaics (OPVs) as electrode modifier or third component in bulk due to their high charge carrier mobility, various electronic band structure, and facile fabrication via liquid phase exfoliation. Herein, solution exfoliated few layers black phosphorus (BP) and tungsten diselenide (WSe2) were…
A solvent-free porous liquid comprising hollow nanorodpolymer surfactant conjugates
Kumar, Raj; Dhasaiyan, Prabhu; Naveenkumar, Parinamipura M.; Sharma, Kamendra P.
Liquids having permanent porosity can offer significant processing advantages over their solid counterparts. This has recently led to tremendous activity towards the design and development of intrinsic pores in the liquid phase, predominantly for studies involving gas sequestration. We show here the development of a solvent-free mesoporous liquid material based…
Solidification and melting phase change behavior of eutectic gallium-indium-tin
Koh, Amanda; Hwang, Wonseok; Y. Zavalij, Peter; Chun, Seth; Slipher, Geoffrey; Mrozek, Randy
The room-temperature liquid metal alloy of gallium, indium, and tin (galinstan) has been studied as a deformable conductive element for stretchable electronics and soft robotics. While these applications are predicated on the soft and conformable behavior of galinstan, little work has been done to understand the solidification of the liquid…
Multilayered assembly of poly(vinylidene fluoride) and poly(methyl methacrylate) for achieving multi-shape memory effects
Ji, Xiaoying; Chen, Dayong; Zheng, Yu; Shen, Jiabin; Guo, Shaoyun; Harkin-Jones, Eileen
The alternately-organized poly(vinylidene fluoride) (PVDF)/poly(methyl methacrylate) (PMMA) multilayer materials were prepared through layer-multiplying coextrusion. With the multiplication of layers, the thickness of each layer was reduced in proportion and the layer interfaces were enriched generating a broader and more continuous thermal transition temperature (Ttrans) from PVDF to PMMA layers
Controllable synthesis of a peapod-like nanostructure via nanoconfining CoFe2O4 in CMK-5 for high-performance lithium-ion batteries
Sun, Yuanyuan; Zou, Yihui; Yuan, Fang; Yan, Chunyun; Chen, Shuai; Jia, Yi Alec; Zhang, Huawei; Yang, Dongjiang; She, Xilin
The CoFe2O4 with spinel structure has been identified as a promising anode material of lithium-ion battery because of high theoretical capacity of 914?mAh?g?1, low price, high chemical durability and environmental friendliness. However, the poor electrical conductivity and significant volume change in the charge and discharge process lead to a severe…
Melt-Spun Nanocomposite Fibers Reinforced with Aligned Tunicate Nanocrystals
Redondo, Alexandre; Chatterjee, Sourav; Brodard, Pierre; Korley, LaShanda T. J.; Weder, Christoph; Gunkel, Ilja; Steiner, Ullrich
The fabrication of nanocomposite films and fibers based on cellulose nanocrystals (P-tCNCs) and a thermoplastic polyurethane (PU) elastomer is reported. High-aspect-ratio P-tCNCs were isolated from tunicates using phosphoric acid hydrolysis, which is a process that affords nanocrystals displaying high thermal stability. Nanocomposites were produced by solvent casting (films) or melt-mixing…
Gold and silver dichroic nanocomposite in the quest for 3D printing the Lycurgus cup
Kool, Lars; Dekker, Floris; Bunschoten, Anton; Smales, Glen J.; Pauw, Brian R.; Velders, Aldrik H.; Saggiomo, Vittorio
The Lycurgus cup is an ancient glass artefact that shows dichroism as it looks green when a white light is reflected on it and a red colouring appears when a white light is transmitted through it. This peculiar dichroic effect is due to silver and gold nanoparticles present in the…