Details:

Alternative Title:
Adv Powder Technol
Publisher's site:
http://dx.doi.org/10.1016/j.apt.2017.03.027
Personal Author:
Grulke, Eric A.; Yamamoto, Kazuhiro; Kumagai, Kazuhiro; Häusler, Ines; Österle, Werner; ... More +
Grulke, Eric A.; Yamamoto, Kazuhiro; Kumagai, Kazuhiro; Häusler, Ines; Österle, Werner; Ortel, Erik; Hodoroaba, Vasile-Dan; Brown, Scott C.; Chan, Christopher; Zheng, Jiwen; Yamamoto, Kenji; Yashiki, Kouji; Song, Nam Woong; Kim, Young Heon; Stefaniak, Aleksandr B.; Schwegler-Berry, D.; Coleman, Victoria A.; Jämting, Åsa K.; Herrmann, Jan; Arakawa, Toru; Burchett, Woodrow W.; Lambert, Joshua W.; Stromberg, Arnold J.; Less -
Description:
The primary crystallite size of titania powder relates to its properties in a number of applications. Transmission electron microscopy was used in this interlaboratory comparison (ILC) to measure primary crystallite size and shape distributions for a commercial aggregated titania powder. Data of four size descriptors and two shape descriptors were evaluated across nine laboratories. Data repeatability and reproducibility was evaluated by analysis of variance. One-third of the laboratory pairs had similar size descriptor data, but 83% of the pairs had similar aspect ratio data. Scale descriptor distributions were generally unimodal and were well-described by lognormal reference models. Shape descriptor distributions were multi-modal but data visualization plots demonstrated that the Weibull distribution was preferred to the normal distribution. For the equivalent circular diameter size descriptor, measurement uncertainties of the lognormal distribution scale and width parameters were 9.5% and 22%, respectively. For the aspect ratio shape descriptor, the measurement uncertainties of the Weibull distribution scale and width parameters were 7.0% and 26%, respectively. Both measurement uncertainty estimates and data visualizations should be used to analyze size and shape distributions of particles on the nanoscale.
Subject:
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Article
Measurement Uncertainty
Shape Distribution
Size Distribution
TEM
Titania

Source:
Adv Powder Technol. 28(7):1647-1659.;
Pubmed ID:
29200658
Pubmed Central ID:
PMC5709820
Document Type:
Journal Article;
Funding:
CC999999/Intramural CDC HHS/United States;
Collection(s):
CDC Public Access
Main Document Checksum:
[+]
urn:sha256:d6f48ade5d741a66291979fb61ef26b9437552af18dad63c2d0a06644e949302
File Type:

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