New covalently tethered CO2 adsorbents are synthesized through the in situ polymerization of N-carboxyanhydride (NCA) of l-alanine from amine-functionalized three-dimensional (3D) interconnected macroporous silica (MPS). The interconnected macropores provide low-resistant pathways for the diffusion of CO2 molecules, while the abundant mesopores ensure the high pore volume. The adsorbents exhibit high molecular weight (of up to 13058 Da), high amine loading (more than 10.98 mmol N g(-1)), fast CO2 capture kinetics (t1/2 < 1 min), high adsorption capacity (of up to 3.86 mmol CO2 g(-1) in simulated flue gas and 2.65 mmol CO2 g(-1) in simulated ambient air under 1 atm of dry CO2), as well as good stability over 120 adsorption-desorption cycles, which allows the overall CO2 capture process to be promising and sustainable.

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An ionic conducting ethyl phosphate-polyethylene glycol based copolymer (abbreviated as EPCP) as a promising flame retardant additive is presented in this study. The flammability tests demonstrate that the liquid electrolyte with 15 wt% EPCP (abbreviated as EPCP15-LE) is totally nonflammable. More importantly, benefitted from the ionic transport capability of EPCP, the ionic conductivity of EPCP15-LE at room temperature is comparable with the liquid electrolyte (shorted as LE). Moreover, the resultant electrolyte possessed wide electrochemical window (4.3 V), which can be matched with relatively high voltage cathode materials. In addition, the cell using EPCP15-LE exhibits superior cycle performance and excellent rate capability. In a word, this flame retardant ionic conductor is a promising additive for safety-reinforced lithium battery.

A kind of terpyridine derivative (NH2-Tpy) in which the amino was incorporated by a short alkyl chain was synthesized. Through grafting of terpyridine units into the hydrophilic copolymers of maleic anhydride and acrylic acid PAAMa via the reaction of the amino groups in NH2-Tpy and the maleic anhydride units, a series of gelator polymers—P1, P2, and P3—containing different contents of terpyridine units was synthesized. Under coordination of Ni2+ and terpyridine ligands in linear polymers, the supramolecular hydrogels H1, H2, and H3 with different cross-linking degrees were prepared. The linear polymers P1–P3 had a strong absorption peak at about 290 nm in the UV-vis spectra which was attributed to π–π* transition, and there was a new peak at about 335 nm led by the metal-to-ligands charge transfer (MLCT) when coordinated with Ni2+ ions. According to the rheological behaviors, the storage modulus (G′) was larger than the loss modulus (G′′). These hydrogels showed typical gel-like characteristics when the terpyridine content of the hydrogels exceeded 10%, and the hydrogels showed liquid-like characteristics when the terpyridine content of the hydrogels was less than 7%. The results of the micromorphological investigation of the xerogels from SEM illustrated the metal–terpyridine coordination cross-linking could have an important influence on the microstructures of the resulting hydrogels. Furthermore, these hydrogels based on supramolecular cross-links exhibited reversible solution–gel transition at different environmental temperatures. At the same time, the equilibrium swelling of the supramolecular hydrogels was 8.0–12.3 g/g, which increased with the decrease in the content of the terpyridine units in the resulting hydrogels.

It was reported that the main obstacle of Li 2 ZrO 3 as high-temperature CO 2 absorbents is the very slow CO 2 sorption kinetics, which are ascribed to the gradual formation of compact zirconia and carbonate shells along with inner unreacted lithium zirconate cores; accordingly, the "sticky" Li + and O 2− ions have to travel a long distance through the solid shells by diffusion. We report here that three-dimensional interconnected nanoporous Li 2 ZrO 3 exhibiting ultrafast kinetics is promising for CO 2 sorption. Specifically, nanoporous Li 2 ZrO 3 (LZ-NP) exhibited a rapid sorption rate of 10.28 wt %/min with an uptake of 27 wt % of CO 2 . Typically, the k 1 values of LZ-NP (kinetic parameters extracted from sorption kinetics) were nearly 1 order of magnitude higher than the previously reported conventional Li 2 ZrO 3 reaction systems. Its sorption capacity of 25 wt % within ∼4 min is 2 orders of magnitude faster than those obtained using spherical Li 2 ZrO 3 powders. Furthermore, nanoporous Li 2 ZrO 3 exhibited good stability over 60 absorption−desorption cycles, showing its potential for practical CO 2 capture applications. CO 2 adsorption isotherms for Li 2 ZrO 3 absorbents were successfully modeled using a double-exponential equation at various CO 2 partial pressures.

<div>A series of NR/SBR vulcanizates were prepared through three different vulcanization systems, conventional vulcanization (CV), effective vulcanization (EV) and semi-effective vulcanization (SEV) respectively, basing on each formulation and optimum curing time. We examined the mechanical properties of NR/SBR vulcanizates including tensile strength, tear strength, elongation at break, modulus, Shore A hardnessand and relative volume abrasion. The results indicated that NR/SBR vulcanizates prepared in different systems differed in mechanical properties. Vulcanizates prepared via CV showed higher tensile and tear strength; vulcanizates prepared via EV had high modulus and hardness, and vulcanizates prepared via SEV performed high abrasion resistance. </div>

In this article, two aspects were studied to enhance the properties of nitrile-butadiene rubber/polypropylene (NBR/PP) blends. First, three kinds of curing systems (dicumyl peroxide [DCP]/SnCl 2 : 2H 2 O, SP-2402/SnCl 2 : 2H 2 O, sulfur/DM) were added into the blends to study the influence of the curing system on NBR/PP blends. It was found that the best curing system is SP/SnCl 2 : 2H 2 O at the amount of 10 wt%. Second, the effects of various proportions of rubber-plastic on the properties of NBR/PP blends were explored. It was tested that, in a certain range, with the increase of rubber NBR and decrease of plastic PP, the tensile strength, hardness, and melting index decreased, while the elongation at break increased. When the proportion m(NBR)/m(PP) was 70/30, the blends had the best properties, exhibited thermoplasticity, and could be extruded stably. This foundation for industrialization was established. It was also found 605 ORDER REPRINTS that when NBR had more acrylonitrile, the blend has more oil resistant, and therefore should be applied when high oil resistance is required. The submicrocosmic structure was tested by transmission electron microscopy (TEM) analysis.