Modeling of microencapsulated polymer shell solidification

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Description

A finite element transport model has been developed and implemented to complement experimental efforts to improve the quality of ICF target shells produced via controlled-mass microencapsulation. The model provides an efficient means to explore the effect of processing variables on the dynamics of shell dimensions, concentricity, and phase behavior. Comparisons with experiments showed that the model successfully predicts the evolution of wall thinning and core/wall density differences. The model was used to efficiently explore and identify initial wall compositions and processing temperatures which resulted in concentricity improvements from 65 to 99%. The evolution of trace amounts of water entering into ... continued below

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10 p.

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Boone, T.; Cheung, L.; Nelson, D.; Soane, D.; Wilemski, G. & Cook, R. March 8, 1995.

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Description

A finite element transport model has been developed and implemented to complement experimental efforts to improve the quality of ICF target shells produced via controlled-mass microencapsulation. The model provides an efficient means to explore the effect of processing variables on the dynamics of shell dimensions, concentricity, and phase behavior. Comparisons with experiments showed that the model successfully predicts the evolution of wall thinning and core/wall density differences. The model was used to efficiently explore and identify initial wall compositions and processing temperatures which resulted in concentricity improvements from 65 to 99%. The evolution of trace amounts of water entering into the shell wall was also tracked in the simulations. Comparisons with phase envelope estimations from modified UNIFAP calculations suggest that the water content trajectory approaches the two-phase region where vacuole formation via microphase separation may occur.

Physical Description

10 p.

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INIS; OSTI as DE96000377

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  • Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 28 Nov - 9 Dec 1994

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  • Other: DE96000377
  • Report No.: UCRL-JC--120184
  • Report No.: CONF-941144--173
  • Grant Number: W-7405-ENG-48;AC03-91SF18601
  • DOI: 10.2172/113974 | External Link
  • Office of Scientific & Technical Information Report Number: 113974
  • Archival Resource Key: ark:/67531/metadc623138

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • March 8, 1995

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  • June 16, 2015, 7:43 a.m.

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  • Aug. 1, 2016, 1:08 p.m.

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Boone, T.; Cheung, L.; Nelson, D.; Soane, D.; Wilemski, G. & Cook, R. Modeling of microencapsulated polymer shell solidification, report, March 8, 1995; California. (digital.library.unt.edu/ark:/67531/metadc623138/: accessed June 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.