Title of Paper:Crystal Size Distribution and Aspect Ratio Control for Rodlike Urea Crystal via Two-Dimensional Growth Evaluation

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Date of Publication:2017-03-08

Journal:251st National Meeting of the American-Chemical-Society (ACS)

Included Journals:SCIE、EI、CPCI-S

Volume:56

Issue:9

Page Number:2573-2581

ISSN No.:0888-5885

Abstract:Research on the evaluation of the two characteristic dimensional parameters (crystal length and width) of rodlike urea crystals is proposed. The two-dimensional crystal growth and the corresponding crystal aspect ratios (AR) are highlighted during the evaluation. Various particle size analysis methods are then introduced to investigate two-dimensional growth mechanisms. Improved crystal morphology (varied from rodlike to columnar), crystal size distribution (coefficient of variation = 31.4), and AR (4.97) are obtained by the proposed operation profile (increasing cooling rate from 0.05 to 0.40 degrees C min(-1) and stable stirring rate of 300 rpm).