Research on synthetic polymers by means of experimental techniques employing synchrotron radiation

1989 ◽  
pp. 111-159 ◽  
Author(s):  
Rainer Gehrke
Keyword(s):  
Synchrotron Radiation ◽  
Synthetic Polymers ◽  
Experimental Techniques

scholarly journals Infrared Synchrotron Radiation and Its Application to the Analysis of Cultural Heritage

2020 ◽  
Vol 5 (2) ◽  
pp. 28
Author(s):  
Yuka Ikemoto ◽  
Manako Tanaka ◽  
Tomohiro Higuchi ◽  
Toshirou Semba ◽  
Taro Moriwaki ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Thermal Radiation ◽  
Cultural Heritage ◽  
Light Source ◽  
Broad Band ◽  
Experimental Techniques ◽  
Original Material ◽  
Limited Size ◽  
Radiation Sources

Infrared synchrotron radiation (IR-SR) is a broad-band light source. Its brilliance is the main advantage for microspectroscopy experiments, when the limited size of the sample often prevents the use of conventional thermal radiation sources. Cultural heritage materials are delicate and valuable; therefore, nondestructive experiments are usually preferred. Nevertheless, sometimes, small pieces can be acquired in the process of preservation and conservation. These samples are analyzed by various experimental techniques and give information about the original material and current condition. In this paper, four attempts to analyze cultural heritage materials are introduced. All these experiments are performed at the microspectroscopy station of IR beamline BL43IR in SPring-8.

Synchrotron Radiation Experimental Techniques

2018 ◽  
pp. 61-121
Author(s):  
Renzhong Tai ◽  
Jianhua He ◽  
Yuying Huang ◽  
Jie Wang ◽  
Xingyu Gao ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Experimental Techniques

scholarly journals Conceptual design of the Hybrid Ring with superconducting linac

2022 ◽  
Vol 29 (1) ◽  
pp. 118-124
Author(s):  
Kentaro Harada ◽  
Nobumasa Funamori ◽  
Naoto Yamamoto ◽  
Yoshito Shimosaki ◽  
Miho Shimada ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Conceptual Design ◽  
Storage Ring ◽  
Ultrashort Pulse ◽  
Radiation Source ◽  
Experimental Techniques ◽  
Ultrafast Dynamics ◽  
Single Pass ◽  
Superconducting Linac ◽  
Hybrid Ring

The Hybrid Ring with a superconducting-linac injector as a highly flexible synchrotron radiation source to enable new experimental techniques and enhance many existing ones is proposed. It is designed to be operated with the coexistence of the storage (SR) bunches characterized by the performance of the storage ring, and the single-pass (SP) bunches characterized by the performance of the superconducting linac. Unique experiments can be performed by simultaneous use of the SR and SP beams, in addition to research with various experimental techniques utilizing the versatile SR beam and research in the field of ultrafast dynamics utilizing the ultrashort pulse of the SP beam. The extendability of the Hybrid Ring will allow it to be developed into a synchrotron radiation complex.

Extraction and identification of fillers and pigments from pyrolyzed rubber and tire samples

1996 ◽  
Vol 54 ◽  
pp. 174-175
Author(s):  
P. Sadhukhan ◽  
J. B. Zimmerman
Keyword(s):  
Zinc Oxide ◽  
Electron Microscope ◽  
Carbon Black ◽  
Natural Rubber ◽  
Transmission Electron Microscope ◽  
Rolling Resistance ◽  
Synthetic Polymers ◽  
Nitrogen Atmosphere ◽  
Transmission Electron ◽  
Curing Agents

Rubber stocks, specially tires, are composed of natural rubber and synthetic polymers and also of several compounding ingredients, such as carbon black, silica, zinc oxide etc. These are generally mixed and vulcanized with additional curing agents, mainly organic in nature, to achieve certain “designing properties” including wear, traction, rolling resistance and handling of tires. Considerable importance is, therefore, attached both by the manufacturers and their competitors to be able to extract, identify and characterize various types of fillers and pigments. Several analytical procedures have been in use to extract, preferentially, these fillers and pigments and subsequently identify and characterize them under a transmission electron microscope.Rubber stocks and tire sections are subjected to heat under nitrogen atmosphere to 550°C for one hour and then cooled under nitrogen to remove polymers, leaving behind carbon black, silica and zinc oxide and 650°C to eliminate carbon blacks, leaving only silica and zinc oxide.

Direct Observation of Monolayer Zones in Al-wt 4% Cu

1990 ◽  
Vol 48 (1) ◽  
pp. 14-15
Author(s):  
B. Jouffrey ◽  
D. Dorignac ◽  
A. Bourret
Keyword(s):  
Solid Solution ◽  
Synchrotron Radiation ◽  
Direct Observation ◽  
Supersaturated Solid Solution ◽  
Original Model ◽  
X Ray ◽  
Image Position

Since the early works on GP zones and the model independently proposed by Preston and Guinier on the first steps of precipitation in supersaturated solid solution of aluminium containing a few percent of copper, many works have been performed to understand the structure of different stages in the sequence of precipitation.The scheme which is generally admitted can be drawn from a work by Phillips.In their original model Guinier and Preston analysed a GP zone as composed of a single (100) copperrich plane surrounded by aluminum atomic planes with a slightly shorter distance from the original plane than in the solid solution.From X-ray measurements it has also been shown that GP1 zones were not only copper monolayer zones. They could be up to a few atomic planes thick. Different models were proposed by Guinier, Gerold, Toman. Using synchrotron radiation, proposals have been recently made.

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