Effect of ultrasonic irradiation on the selective polymorph control in sulfamerazine

Masahiro Kurotani; Izumi Hirasawa

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Effect of ultrasonic irradiation on the selective polymorph control in sulfamerazine

机译：超声辐照对选择性的影响变形控制磺胺甲基嘧啶

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The selective polymorph control in sulfamerazine (SMZ) using ultrasonic irradiation was investigated. Firstly, the behavior of polymorphs in the absence of ultrasonic irradiation with various degrees of supersaturation was monitored. As a result, only metastable form-I crystallized at the primary nucleation stage and crystal growth of only form-I was recognized. The nucleation rate of stable form-II was very small, and the transformation from form-I to form-II hardly occurred. Therefore, it is easy to obtain form-I without ultrasonic irradiation, as it does not depend on the level of supersaturation. Secondly, the behavior of polymorphs with various degrees of ultrasonic energy and supersaturation was monitored. As a result, only form-I was obtained in the case of small ultrasonic energy. However, in addition to the nucleation of form-I, an unknown form-Ill and/or the recognized form-II are induced to nucleate under the influence of the ultrasonic energy in the case of large ultrasonic energy. Eventually, all forms changed to form-II within a short period of time. Therefore, polymorph control of SMZ can be achieved easily by supplying an appropriate amount of ultrasonic energy.

机译：磺胺甲基嘧啶选择性变形控制(SMZ)使用超声波辐照调查。在缺乏超声辐照不同程度的过度饱和监控。结果,只有亚稳我结晶在初级成核阶段和水晶只有我是公认的增长。成核速率稳定form-II非常小,并从我到form-II转换几乎不发生。我没有超声辐照,一样不依赖过度饱和的程度。其次,多晶型物各种的行为程度的超声能量和过度饱和被监控。获得的超声能量。然而,除了我的成核,未知form-Ill form-II和/或承认被诱导成核的影响下吗超声波能量的情况超声能量。在很短的时间内form-II。因此,变形控制SMZ可以通过提供一个适当的轻松地完成超声波能量的作用。

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《Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers》 |2010年第9期|1272-1278|共7页
作者
Masahiro Kurotani; Izumi Hirasawa;
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作者单位

Department of Applied Chemistry, School of Science and Engineering, Waseda University, Tokyo, Japan;

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正文语种英语
中图分类国际共产主义运动;
关键词
nucleation rate; crystal growth from solution; SupersaturationNUCLEATorganic compoundsIrradiationUltrasonic WavesSulfamerazineultrasonic energy;

机译：成核速率、晶体生长解决SupersaturationNUCLEATorganic;compoundsIrradiationUltrasonicWavesSulfamerazineultrasonic能源;

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Effect of ultrasonic irradiation on the selective polymorph control in sulfamerazine

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