Graphene is prepared from graphite by pressurized oxidation and multiplex reduction. The advantageous in easy operation size-control, the reduction, based on ammonia hydrazine, produces single-atom-thick graphene (0.4–0.6 nm thick) which can be directly observed atomic force microscopy. A masterbatch strategy, feasible "soluble" thermoplastic polymers, developed to disperse into poly(lactic acid) melt blending. well dispersed obtained nanocomposites present markedly improved crystallinity,...

In order to obtain homogeneous dispersion and strong filler-matrix interface in epoxy resin, graphene oxide was functionalized via surface modification by hexachlorocyclotriphosphazene glycidol then incorporated into resin nanocomposites situ thermal polymerization. The morphology of characterized scanning electron microscopy transmission microscopy, implying good nano-sheets. incorporation effectively enhanced various property performances nanocomposites. storage modulus the significantly...

Polymer/graphene nanocomposites have generated intensive interest due to their unique properties. Dispersion and interface interactions between graphene the polymer matrix are two key factors obtain property enhancements. According open literature, in poly(vinyl alcohol) (PVA) nanocomposites, usually obtains more significant enhancements than graphite oxide (GO), although GO can much easily form a good dispersion strong interaction PVA because of its oxygenated functionalities, reason has...

Starting from expandable graphite (EG), graphene, oxide (GO), and organic phosphate functionalized oxides (FGO) were prepared incorporated into epoxy resin (EP) matrix via in situ polymerization to prepare EP based composites. The structure of the composites was characterized by transmission electron microscopy show good dispersion without large aggregates. thermal behavior investigated thermogravimetric analysis indicated EP/graphene highest onset temperature maximum weight loss compared...

Graphene is promising for the fire safety applications of polymers, but ease burn out limits further developments. A novel strategy based on functionalized graphene oxide (FGO) developed to overcome this challenge. with char-catalyzing agents and reactive compounds incorporated into polystyrene. When FGO–polystyrene composites are degraded or burned, FGO catalyzes char formation from polystyrene (Char A). Char protects burning then acts as a graphitic B). Because combination A, B, physical...

Graphite oxide, graphene, ZrO2-loaded graphene and β-Ni(OH)2-loaded (joint appellation: Gs) were prepared incorporated into polystyrene so as to improve the fire safety properties of polystyrene. By masterbatch-melt blending technique, Gs nanolayers well dispersed exfoliated in thin layers (thickness 0.7–2 nm). The visibly improved, including an increased thermal degradation temperature (18 °C, PS/Ni–Gr-2), decreased peak heat release rate (40%, PS/Zr–Gr-2) reduced CO concentration (54%,...

A novel phosphorus- and nitrogen-containing compound (POPHA) has been synthesized by allowing phosphorus oxychloride to react with piperazine 2-hydroxyethyl acrylate (HEA). Its structure was characterized FTIR, 1H NMR, 31P NMR. series of UV-curable flame-retardant resins were obtained blending POPHA EA in different ratios. The properties the limiting oxygen index (LOI) microscale combustion calorimeter (MCC). results showed that incorporation into can improve flame retardancy dramatically....

Bistable polymer-stabilized cholesteric liquid crystal (LC) devices have been extensively researched due to their energy-saving benefits. Compared with merely transparent and light-scattering states, LC controlled light absorption or changeable color functions are unquestionably more intriguing. In this paper, a ion-doped an electrochromic layer used fabricate colorable device which can show four operating states: transparent, light-scattering, colored light-scattering. The working principle...

Starch containing polypropylene (SCP) semibiocomposites were prepared by melted blend method. Microencapsulated ammonium polyphosphate (MCAPP) was added to the SCP not only improve its flame retardant properties but also restrain reaction between (APP) and starch during processing. The of have been investigated limited oxygen index (LOI), UL-94 test, cone calorimeter test. results show that peak heat release rate total decreases substantially compared with pure PP. thermal degradation gas...

Composites based on poly(vinyl alcohol) (PVA) and aluminum hypophosphite (AHP) are prepared by solvent blending. The thermal, mechanical, crystallinity properties of the composites studied. AHP remarkably improves char residue yield during thermal degradation combustion AHP/PVA composites. flame retardancy is obviously improved. increased which protects underlying PVA from heat oxygen one key reasons for improved retardancy. decreased. glass transition temperature (Tg) storage modulus...

A liquid crystal (LC) lens array with high light control power and a large aperture using composited alignment layer is proposed. In our design, the not only used for getting uniform arrangement of LC molecule, but also lens-like refractive index distribution in when voltage applied. Through simple technology processes, tunable focal length millimeter scale diameter can be achieved. Furthermore, maximum phase difference proposed achieve 105.38π. So, has power.

The study of pore structure in low-permeability sandstone uranium deposits has become a key factor the profitability mining. In this paper, and fracture distribution target were determined by using mercury injection parameters. Single multi-fractal models are used to calculate heterogeneity volume distribution. Moreover, correlation between compressibility been studied. results as follows. (1) All samples can be divided into three types maximum withdrawal efficiency. Type A is represented...

Sugarcane (Saccharum spp. hybrids) is an important sugar and bioenergy crop with a high aneuploidy, complex genomes extreme heterozygosity. A good understanding of genetic diversity population structure among sugarcane parental lines prerequisite for improvement through breeding. In order to understand characteristics used in breeding programs China, 150 the most popular accessions were analyzed 21 fluorescence-labeled simple sequence repeats (SSR) markers high-performance capillary...

In this work, we investigate the three-dimensional lattice deformation of blue phase (BP) liquid crystals under electrostriction. Using in situ measurement light diffraction signals from a twinned crystal, propose method to experimentally determine constants BPs an electric field; overlap angle pattern BP twinning domains gives ratio lateral direction field, which can be analyzed together with Bragg reflection peak wavelength along field yield constants. The obtained values are confirmed...

Nanocomposites based on poly(vinyl alcohol) and α-titanium phosphate were prepared by the solvent-cast method. The nanosheets homogeneously dispersed in matrix, marked property enhancements obtained. In thermogravimetric analysis, maximum decomposition temperature of nanocomposites was increased 80 °C, value reduced 60%. storage modulus tensile strength improved 64% 84%, respectively. According to microscale combustion calorimetry, ignition (89 °C) for peak heat release rate (192...

Pore structure heterogeneity of coal reservoirs restricts the diffusion-seepage process coalbed methane, thereby restricting production capacity methane. Therefore, 10 samples from Linxing area are taken as an objective, and high-pressure mercury intrusion testing was used to describe pore distribution all samples. On this basis, four single multifractal models were perform fractal calculations, correlation analysis conducted on advance retreat dimension values clarify physical significance...

A blue-phase liquid crystal display (BPLCD) with single–penetration (S-P) electrodes is proposed to reduce the operating voltage. X-shape inclined-electric field induced by S-P 2 ~ 3 μm height, which can lower voltage ~45%, and improve transmittance compared BPLCD conventional in-plane electrodes. Moreover, wide viewing angle very small image distortion index be obtained in this structure a half-wave biaxial film. The shows simple etching control easy one-drop filling process of...

Micro-structures of the pore-fracture size distribution target sandstone samples are studied through high-pressure mercury intrusion (HPMI) experiments, and compressibility coefficient is quantitatively described by using overlying pressure porosity–permeability tests. Then, four single multifractal models were used to describe fractal characteristics curves, relationship between different pore structure parameters analyzed. Furthermore, applicability in characterizing structures was...