High performance of hydrophilic polymers on the crosslinked polystyrene spheres for controlling contaminants in white water

2017 ◽  
Vol 134 (31) ◽  
pp. 45169
Author(s):  
He Xiao ◽  
Beihai He ◽  
Junrong Li ◽  
Lihui Chen ◽  
Liulian Huang
Keyword(s):  
High Performance ◽  
Hydrophilic Polymers ◽  
Polystyrene Spheres ◽  
Crosslinked Polystyrene ◽  
White Water

High performance g.p.c. with crosslinked polystyrene gels: influence of particle size on the polydispersity of high polymers

Polymer ◽  
1979 ◽  
Vol 20 (9) ◽  
pp. 1164-1166 ◽  
Author(s):  
John V. Dawkins ◽  
Tadeusz̵ Stone ◽  
Graham Yeadon ◽  
Frank P. Warner
Keyword(s):  
Particle Size ◽  
High Performance ◽  
Crosslinked Polystyrene ◽  
High Polymers

Adsorption of polygalacturonic acid on crosslinked polystyrene spheres with cationic polyelectrolyte

RSC Advances ◽  
2016 ◽  
Vol 6 (14) ◽  
pp. 11522-11527 ◽  
Author(s):  
He Xiao ◽  
Beihai He ◽  
Junrong Li
Keyword(s):  
Water Consumption ◽  
Cationic Polyelectrolyte ◽  
Polygalacturonic Acid ◽  
Polystyrene Spheres ◽  
Crosslinked Polystyrene ◽  
Dissolved And Colloidal Substances ◽  
Paper Quality

In a papermaking system, severe drawbacks on machine runnability and paper quality occur even as water consumption is not decreased due to a build-up of dissolved and colloidal substances (DCS) in the whitewater.

scholarly journals Large-scale fabrication of porous YBO 3 hollow microspheres with tunable photoluminescence

2018 ◽  
Vol 5 (4) ◽  
pp. 172186 ◽  
Author(s):  
Zhenhe Xu ◽  
He Yu ◽  
Feixue Ai ◽  
Guiyan Zhao ◽  
Yanfeng Bi ◽  
...  
Keyword(s):  
High Performance ◽  
Large Scale ◽  
Low Cost ◽  
Exchange Process ◽  
Hollow Spheres ◽  
Average Diameter ◽  
Hollow Microspheres ◽  
Precipitation Method ◽  
Polystyrene Spheres ◽  
Ion Exchange Process

Hollow lanthanide-doped compounds are some of the most popular materials for high-performance luminescent devices. However, it is challenging to find an approach that can fabricate large-scale and well-crystallized lanthanide-doped hollow structures and that is facile, efficient and of low cost. In this study, YBO 3 : Eu 3+ /Tb 3+ hollow microspheres were fabricated by using a novel multi-step transformation synthetic route for the first time with polystyrene spheres as the template, followed by the combination of a facile homogeneous precipitation method, an ion-exchange process and a calcination process. The results show that the as-obtained YBO 3 : Eu 3+ /Tb 3+ hollow spheres have a uniform morphology with an average diameter of 1.65 µm and shell thickness of about 160 nm. When used as luminescent materials, the emission colours of YBO 3 : Eu 3+ /Tb 3+ samples can be tuned from red, through orange, yellow and green-yellow, to green by simply adjusting the relative doping concentrations of the activator ions under the excitation of ultraviolet light, which might have potential applications in fields such as light display systems and optoelectronic devices.

Cationic polystyrene spheres for removal of anionic contaminants in white water of papermaking

2014 ◽  
Vol 132 (5) ◽  
pp. n/a-n/a
Author(s):  
He Xiao ◽  
Beihai He ◽  
Liying Qian ◽  
Junrong Li
Keyword(s):  
Polystyrene Spheres ◽  
White Water

Sol–Gel Synthesis of Porous Li2TiO3 for High-Performance Electrochemical Supercapacitors

NANO ◽  
2018 ◽  
Vol 13 (03) ◽  
pp. 1850027 ◽  
Author(s):  
Hui Mao ◽  
Bing Li
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Sol Gel ◽  
Lithium Titanate ◽  
Tetrabutyl Titanate ◽  
Polystyrene Spheres ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Sol Gel Synthesis ◽  
A Current

Metal titanates have been considered as one of the most promising materials for supercapacitors because of their excellent properties. In this work, porous lithium titanate (Li2TiO3) nanomaterials were prepared by sol–gel method using lithiumhydroxide hydrate and tetrabutyl titanate as precursors and polystyrene spheres as a template. The Brunauer-Emmett-Teller (BET) result revealed a large specific surface area of the Li2TiO3 nanomaterials. More importantly, the porous Li2TiO3 nanomaterials were examined as the electrode materials of supercapacitors. Such porous Li2TiO3 nanomaterials’ electrode exhibited a specific capacitance of 195[Formula: see text]F[Formula: see text]g[Formula: see text] at a current density of 1[Formula: see text]A[Formula: see text]g[Formula: see text] with a capacity retention of 96.3% after 5000 cycles in 3[Formula: see text]M KOH aqueous electrolyte. These superior results indicate that the porous Li2TiO3 nanomaterials are excellent materials for high-performance energy storage devices.

A High Performance Energy Analyzer for Use in Electron Scanning Microscopy

1969 ◽  
Vol 27 ◽  
pp. 14-15
Author(s):  
A. V. Crewe ◽  
M. Isaacson ◽  
D. Johnson
Keyword(s):  
High Performance ◽  
Vertical Plane ◽  
Median Plane ◽  
Electron Gun ◽  
Uniform Field ◽  
Loss Mechanism ◽  
Electron Scanning Microscopy ◽  
Sector Type ◽  
Double Focusing ◽  
Electron Energy Loss

A double focusing magnetic spectrometer has been constructed for use with a field emission electron gun scanning microscope in order to study the electron energy loss mechanism in thin specimens. It is of the uniform field sector type with curved pole pieces. The shape of the pole pieces is determined by requiring that all particles be focused to a point at the image slit (point 1). The resultant shape gives perfect focusing in the median plane (Fig. 1) and first order focusing in the vertical plane (Fig. 2).

Vacuum System to Minimize the Specimen Contamination of High-Performance EM

1977 ◽  
Vol 35 ◽  
pp. 68-69
Author(s):  
N. Yoshimura ◽  
K. Shirota ◽  
T. Etoh
Keyword(s):  
Electron Microscope ◽  
High Speed ◽  
High Performance ◽  
High Vacuum ◽  
Vacuum System ◽  
Pump System ◽  
Pumping System ◽  
Diffusion Pump ◽  
Almost All ◽  
Cascade Type

One of the most important requirements for a high-performance EM, especially an analytical EM using a fine beam probe, is to prevent specimen contamination by providing a clean high vacuum in the vicinity of the specimen. However, in almost all commercial EMs, the pressure in the vicinity of the specimen under observation is usually more than ten times higher than the pressure measured at the punping line. The EM column inevitably requires the use of greased Viton O-rings for fine movement, and specimens and films need to be exchanged frequently and several attachments may also be exchanged. For these reasons, a high speed pumping system, as well as a clean vacuum system, is now required. A newly developed electron microscope, the JEM-100CX features clean high vacuum in the vicinity of the specimen, realized by the use of a CASCADE type diffusion pump system which has been essentially improved over its predeces- sorD employed on the JEM-100C.

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