Determination of polymerization particle morphology using synchrotron computed microtomography

Conference · Tue Oct 01 00:00:00 EDT 1991

OSTI ID:5924393

Jones, K W; Spanne, P ^[1]; Lindquist, W B ^[2]; Conner, W C; Ferrero, M ^[3]

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1. Brookhaven National Lab., Upton, NY (United States)
2. State Univ. of New York, Stony Brook, NY (United States)
3. Massachusetts Univ., Amherst, MA (United States)

Polymerization of monomers over heterogeneous catalysts results in the fragmentation of the catalysts and subsequent transport in the polymer particles that are produced. Characterization of the process using nondestructive synchrotron computed microtomography techniques makes possible measurement of the distribution of the catalyst fragments in an individual particle and, in addition, gives an estimate of the particle porosity and surface area. The present experiment was carried out using the x-ray microscopy facility at the Brookhaven National Synchrotron Light Source (NSLS) X26 beam line. The tomographic sections were analyzed using autocorrelation techniques to determine porosity and surface area values. The results are compared to values obtained using conventional methods. This procedure makes possible the extraction of quantitative information about porosity and specific area from the tomograms. 9 refs., 7 figs., 1 tab.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: USDOE; National Science Foundation (NSF); USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016; FG02-90ER25084
• OSTI ID: 5924393
• Report Number(s): BNL-46226; CONF-910921-1; ON: DE92004992; CNN: CTS 89-21381
• Resource Relation: Conference: 2. European conference on accelerators in applied research and technology, Frankfurt am Main (Germany), 3-7 Sep 1991
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
MORPHOLOGICAL CHANGES
PHOTON COMPUTED TOMOGRAPHY
POLYMERS
CATALYSTS
CORRELATION FUNCTIONS
ETHYLENE
MONOMERS
POLYMERIZATION
ALKENES
CHEMICAL REACTIONS
COMPUTERIZED TOMOGRAPHY
DIAGNOSTIC TECHNIQUES
FUNCTIONS
HYDROCARBONS
ORGANIC COMPOUNDS
TOMOGRAPHY
665300* - Interactions Between Beams & Condensed Matter- (1992-)
360602 - Other Materials- Structure & Phase Studies