Powder Technology最新文献_第7页

A PIV/PTV hybrid algorithm for high particle concentration fields 高粒子浓度场的PIV/PTV混合算法

IF 4.6 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology

Pub Date : 2025-11-25 DOI: 10.1016/j.powtec.2025.121966

Minghan Jiao , Yang Zhang , Mengdi Yan , Qiang Zhang , Yuanming Hu

Particle Tracking Velocimetry (PTV) can visualize flow fields by reconstructing particle trajectories, but its performance degrades in environments with high particle concentration. In contrast, Particle Image Velocimetry (PIV) is effective in analyzing flows with dense particle population using continuous grayscale image data, yet it has difficulty in capturing the fine-scale local motions of individual particles.

To tackle the technical challenge of accurate Lagrangian reconstruction in flow fields with high particle concentration, this study presents a new hybrid algorithm, which integrates the PIV algorithm with a cluster-based PTV algorithm enhanced by Voronoi Diagram (VD) technology. Different from traditional hybrid methods, it innovatively realizes a Dual Fusion (DF) of PIV and PTV principles and a Dual Correction (DC) mechanism for optimizing particle matching results, thus named DF-DC. Through comparative analysis with existing algorithms using synthetic grayscale images, DF-DC exhibits stronger robustness: When the particle number reaches 30,000, DF-DC maintains an accuracy of over 80 %, exceeding SRPIV and MQ-PTV by 17 % and 47 %, respectively. Furthermore, under realistic measurements with a ghost particle ratio of 5 %, DF-DC sustains an accuracy above 90 %. Then the practical value of DF-DC is verified by successful applications in reconstructing particle motion in a fluidized bed and in the flow downstream of a heart valve, which affirms its real-world applicability.

粒子跟踪测速技术（PTV）可以通过重建粒子运动轨迹来实现流场的可视化，但在高粒子浓度环境下，其性能会下降。相比之下，粒子图像测速（PIV）在使用连续灰度图像数据分析密集粒子群的流动时是有效的，但在捕获单个粒子的精细尺度局部运动方面存在困难。为了解决高颗粒浓度流场中精确拉格朗日重建的技术难题，本文提出了一种新的混合算法，该算法将PIV算法与基于Voronoi图（VD）技术增强的基于聚类的PTV算法相结合。与传统的混合方法不同，它创新地实现了PIV和PTV原理的双重融合（DF）和优化粒子匹配结果的双重校正（DC）机制，因此命名为DF-DC。通过与现有合成灰度图像算法的对比分析，DF-DC具有更强的鲁棒性：当粒子数达到30000时，DF-DC的准确率保持在80%以上，分别比SRPIV和MQ-PTV高出17%和47%。此外，在鬼粒子率为5%的实际测量中，DF-DC的精度保持在90%以上。然后，通过在流化床和心脏瓣膜下游流动中的成功应用，验证了DF-DC的实用价值，证实了其在现实世界中的适用性。

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引用次数: 0

Experimental study on the settling velocity of cohesive sediment considering sediment gradation 考虑泥沙级配的粘性泥沙沉降速度试验研究

IF 4.6 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology

Pub Date : 2025-11-25 DOI: 10.1016/j.powtec.2025.121967

Yige Jing , Jinfeng Zhang , Qinghe Zhang , Zezhou Ji

Sediment settling velocity is a key parameter in studying sediment transport dynamics for coastal and ocean engineering. Many marine sediments contain clay particles that induce flocculation during settling. However, existing experimental studies on flocculation settling have not adequately considered the influence of clay content and particle size distributions. This study employed optical fiber sensors and a high-speed camera within a settling column to measure the settling characteristics of cohesive sediment across a concentration range of 0.3 kg/m³ to 20 kg/m³ and three distinct gradations (median particle sizes: 13.1 μm, 8.9 μm, and 15.4 μm). Crucially, the methodology ensured flocs remained within the settling environment throughout the measurements. Consequently, floc size distribution curves and settling velocities were obtained for the entire concentration range. Furthermore, the influence of salinity (0 ppt to 30 ppt) on settling was investigated at a sediment concentration of 1 g/L. The results demonstrate that the representative settling velocity initially increases rapidly with rising sediment concentration but then decreases. The effects of sediment gradation and concentration on settling velocity are interconnected. The specific mechanisms by which gradation influences settling differ across settling stages, primarily affecting the number and structure of generated flocs or the effective fluid viscosity. Moreover, salinity significantly enhances the flocculation process and alters floc structure. A critical salinity threshold for flocculation transition was identified, beyond which marked differences in floc distribution and characteristics emerged. This leads to the characteristic settling velocity increasing with salinity and then decreasing after reaching a saturation point. Based on extensive experimental data, a cohesive sediment settling velocity correction coefficient is proposed, accounting for clay content, sediment concentration, and salinity, which enhances the settling velocity formula established by Jing et al. Applying this corrected formula within a three-dimensional sediment transport model for a real estuary significantly improved the calculation accuracy of suspended sediment transport.

泥沙沉降速度是研究海岸海洋工程输沙动力学的关键参数。许多海洋沉积物含有粘土颗粒，在沉降过程中会引起絮凝。然而，现有的絮凝沉降实验研究没有充分考虑粘土含量和粒径分布的影响。本研究利用光纤传感器和沉降柱内的高速摄像机测量了浓度范围为0.3 kg/m3至20 kg/m3的粘性沉积物的沉降特性，并测量了三种不同的粒度（中位粒径：13.1 μm、8.9 μm和15.4 μm）。至关重要的是，该方法确保絮凝体在整个测量过程中保持在沉降环境中。得到了整个浓度范围内的絮凝体粒径分布曲线和沉降速度。此外，在沉积物浓度为1 g/L时，研究了盐度（0 ~ 30 ppt）对沉降的影响。结果表明：随着泥沙浓度的升高，代表性沉降速度先迅速增大后减小；泥沙级配和浓度对沉降速度的影响是相互关联的。级配影响沉降的具体机制因沉降阶段而异，主要影响生成絮凝体的数量和结构或有效流体粘度。此外，盐度显著提高了絮凝过程，改变了絮凝体结构。确定了絮凝过渡的临界盐度阈值，超过该阈值，絮凝体的分布和特征就会出现显著差异。这导致特征沉降速度随盐度增大而增大，达到饱和点后又减小。在大量实验数据的基础上，提出了考虑粘土含量、泥沙浓度和盐度的粘性泥沙沉降速度修正系数，对Jing等建立的沉降速度公式进行了改进。将修正后的公式应用于实际河口三维输沙模型，可显著提高悬沙输沙的计算精度。

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引用次数: 0

Novel modified xanthan gum-amino acid foams dust suppressants: Synthesis, characterization, and properties 新型改性黄原胶-氨基酸泡沫抑尘剂：合成、表征及性能

IF 4.6 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology

Pub Date : 2025-11-24 DOI: 10.1016/j.powtec.2025.121965

Fangwei Han , Diandian Xue , Mei Liu , Fuhong Hu , Guirui Niu , Shunan Ni , Hetang Wang

In order to address the problems of environmental pollution caused by the large amount of dust in each production process of open-pit coal mine, this study uses amino acid surfactants and modified xanthan gum to formulate a new type of green foam dust suppressant (XCFH). The foam stabilizer xanthan gum is screened by single factor experiment and modified by chitosan to improve foam stabilizing ability. The ratio of initiator (ferrous sulfate and hydrogen peroxide) and crosslinking agent (sodium tetraborate) is optimized by orthogonal experiment. The prepared XCFH can efficiently wet and consolidate pulverized coal. The formation of B-O-C bond is confirmed by Fourier transform infrared spectroscopy, indicating that the crosslinking reaction is successful. The performance test results show that the viscosity of XCFH is 23 mPa·s, and the hardness is 70.6 HA. Scanning electron microscopy and wind erosion resistance experiments show that XCFH has good consolidation ability, and the wind erosion resistance rate can be up to 98.58 %. This study presents an environmentally friendly and highly efficient strategy for controlling dust emissions in open-pit coal mines.

为解决露天煤矿各生产工序粉尘量大造成的环境污染问题，本研究采用氨基酸表面活性剂和改性黄原胶配制新型绿色泡沫抑尘剂（XCFH）。通过单因素实验筛选泡沫稳定剂黄原胶，并用壳聚糖进行改性，提高泡沫稳定能力。通过正交实验优化了引发剂（硫酸亚铁和过氧化氢）和交联剂（四硼酸钠）的配比。所制备的XCFH能有效地湿化和固结煤粉。傅里叶红外光谱证实了B-O-C键的形成，表明交联反应是成功的。性能测试结果表明，XCFH的粘度为23 mPa·s，硬度为70.6 HA。扫描电镜和抗风蚀试验表明，XCFH具有良好的固结能力，抗风蚀率可达98.58%。本研究提出了一种环保高效的控制露天煤矿粉尘排放的策略。

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引用次数: 0

On deep learning calibration for DEM simulation of sedimentary and igneous rocks 沉积岩和火成岩DEM模拟的深度学习标定

IF 4.6 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology

Pub Date : 2025-11-24 DOI: 10.1016/j.powtec.2025.121929

Mikhail Kholodniak , Artem Panchenko , Igor Berinskii

We propose a Deep Learning (DL)-based calibration procedure of particle-based material model parameters for rock materials simulated by the Discrete Element Method (DEM). We create Discrete Element models using Bond-Particle Models to simulate Uniaxial Compression tests and Brazilian tests commonly used for experimental determination of material parameters. After simulation, the microscopic parameters of the model are fed into a constructed DL system based on the Multi-Layer Perceptron regressor as input data and the functional depending on macroscopic critical stresses and strains as the output.

As a result, a set of optimal microscopic parameters has been found and tested in a simulation using the same DEM Model. Then, we compared the resulting stress–strain curve with the experimental data used as a reference for calibration. Additionally, the stability of the obtained model in terms of reproducibility of the stress–strain curve has been tested by simulating Uniaxial Compression for DEM models with different particle packing.

The discrete element models obtained with material parameters have showcased excellent stability and consistency with experimental data, especially for hard rocks. For soft rocks, the model showcases nonlinear elastic behavior upon loading.

The procedure can be used to simulate rocks in geomechanics and geoengineering problems demanding discontinuous rock description, such as multiple crack formation, drilling, boring, and rock blasts.

针对离散元法（DEM）模拟的岩石材料，提出了一种基于深度学习的颗粒材料模型参数标定方法。我们使用Bond-Particle models创建离散单元模型来模拟单轴压缩试验和巴西试验，这些试验通常用于材料参数的实验确定。仿真完成后，将模型的微观参数作为输入数据输入到基于多层感知器回归器构建的深度学习系统中，并将依赖于宏观临界应力和应变的泛函作为输出。结果，找到了一组最佳微观参数，并在使用相同的DEM模型的模拟中进行了测试。然后，我们将得到的应力-应变曲线与实验数据进行比较，作为校准的参考。此外，通过模拟不同颗粒充填的DEM模型的单轴压缩，验证了模型在应力-应变曲线再现性方面的稳定性。采用材料参数建立的离散元模型具有良好的稳定性和与实验数据的一致性，特别是对于坚硬岩石。对于软岩，该模型显示了加载时的非线性弹性行为。该程序可用于模拟地质力学中的岩石，以及需要不连续岩石描述的地质工程问题，如多裂缝形成、钻孔、钻孔和岩石爆炸。

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引用次数: 0

Characteristic formation of the structure composite nanoparticles high entropy oxide/Ag obtained by joint exploding wires 结合爆炸丝制备高熵氧化银复合纳米颗粒结构的特征形成

IF 4.6 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology

Pub Date : 2025-11-23 DOI: 10.1016/j.powtec.2025.121951

K.V. Suliz, A.A. Gusarenko, A.V. Pervikov

Composite nanoparticles with compositions (NiFeCoCrCu)_xO_y/Ag and (NiFeCoCrAl)_xO_y/Ag were synthesized by a single-stage method based on the joint electrical explosion of wires made of different metals/alloys in an oxygen-containing atmosphere. It was shown that the phase composition of the nanoparticles is represented by high-entropy oxides with spinel and rock-salt structures, as well as an FCC-phase corresponding to a substitutional solid solution based on silver. The composition (NiFeCoCrCu)_xO_y/Ag is characterized by the predominant formation of composite nanoparticles with a Janus-particle structure. For the (NiFeCoCrAl)_xO_y/Ag composition, the composite nanoparticles predominantly exhibit a structure in which a spherical core is represented by a high-entropy oxide, while silver is located on the nanoparticle surface in the form of individual grains. Differences in the nanoparticle structures of these compositions are attributed to the features of the evolution of structure of their multicomponent melts, which exhibit different mixing enthalpy values.

以不同金属/合金制成的导线在含氧气氛中联合电爆炸为基础，采用单级法合成了（NiFeCoCrCu）xOy/Ag和（NiFeCoCrAl）xOy/Ag复合纳米颗粒。结果表明，纳米颗粒的相组成由尖晶石和岩盐结构的高熵氧化物和银基取代固溶体对应的fcc相组成。组成（NiFeCoCrCu）xOy/Ag的特点是主要形成具有双面粒子结构的复合纳米颗粒。对于（nifecocal）xOy/Ag组合物，复合纳米颗粒主要表现为以高熵氧化物为代表的球形核结构，而银以单个颗粒的形式位于纳米颗粒表面。这些成分的纳米颗粒结构的差异归因于它们的多组分熔体的结构演化特征，它们表现出不同的混合焓值。

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引用次数: 0

Influence of fluidized bed parameters on single-particle coating efficiency and sustained-release properties of Sub-200 μm theophylline microcapsules 流化床参数对亚200 μm茶碱微胶囊单颗粒包覆效率及缓释性能的影响

IF 4.6 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology

Pub Date : 2025-11-23 DOI: 10.1016/j.powtec.2025.121940

Rongjiao Wu , Erhao Li , Jingxin Gou , Tian Yin , Yu Zhang , Xing Tang , Haibing He

The coating efficiency of fluidized bed is significantly influenced by various process parameters. This study utilized theophylline (THEO), a pediatric asthma therapeutic drug, as a model to systematically investigate the key process parameters for single-particle coating below 200 μm through constructing a fluidized bed gas-solid two-phase motion model. By integrating the Euler-Euler two-fluid model and turbulence model, along with experimental validation, the influence of atomization pressure (>0.16 MPa), jet velocity-drying airspeed difference (>0.4 m/s), and maximum liquid feeding rate (3.3 cm³/min) on coating efficiency were revealed. The resulting theophylline sustained-release microcapsules (TSM) exhibited stable sustained-release characteristics in pH 1.2–6.8 media, with an 18 % increase in drug loading and an in vitro release similarity factor (f₂) of 65 compared to commercial preparations. Although the pharmacokinetic parameters obtained from the rat in vivo study differed, the release trends remained comparable. This method for preparing TSM reduces economic and time costs during industrial scaling-up, providing a theoretical basis and technical support for developing pediatric-specific theophylline formulations.

流化床的包覆效率受不同工艺参数的影响较大。本研究以儿童哮喘治疗药物茶碱（theophylline， THEO）为模型，通过构建流化床气固两相运动模型，系统研究了200 μm以下单颗粒包覆的关键工艺参数。结合Euler-Euler双流体模型和湍流模型，结合实验验证，揭示了雾化压力（0.16 MPa）、射流速度-干燥空速差（0.4 m/s）和最大进液速度（3.3 cm3/min）对涂层效率的影响。所得茶碱缓释微胶囊（TSM）在pH 1.2-6.8介质中具有稳定的缓释特性，与市售制剂相比，其载药量增加18%，体外释放相似因子（f2）为65。虽然从大鼠体内研究中获得的药代动力学参数不同，但释放趋势仍然具有可比性。这种制备TSM的方法降低了工业化推广过程中的经济成本和时间成本，为开发儿科专用茶碱制剂提供了理论基础和技术支持。

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引用次数: 0

The effect of irregular particle shape and surface deformation on particle bounce, part II: Particle bounce modelling and experimental validation 不规则颗粒形状和表面变形对颗粒弹跳的影响，第二部分：颗粒弹跳模型和实验验证

IF 4.6 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology

Pub Date : 2025-11-22 DOI: 10.1016/j.powtec.2025.121910

Brandon J. Weindorf , Alix M. Ehlers , K. Todd Lowe , Wing Ng , Mark J. Caddick , Jim Loebig , Rory Clarkson

Particulate induced erosion has proven to be detrimental to turbomachinery over the past several decades. Even with this longevity, the complexities associated with particles and engine surfaces have inhibited the development of simple and efficient particle bounce models. Typically, particle behaviors are statistically deduced through the study of the coefficient of restitution (

COR

) for impacts on aerospace materials. This work builds upon previous developments to derive a normal

COR

model that better accounts for the effects of particle geometries in particle-surface interactions. The model incorporates the jagged, irregular shapes directly measured from particles while also modelling the deformation of the particle and surface individually. As a result, the model natively predicts surface deformation that occurs due to particle impingement. While this new model has been developed to apply to general particle impact conditions, it is compared with measured normal coefficients of restitution for

212 μm - 250 μm

sieved quartz normally incident at speeds between

20 m / s

and

120 m / s

on various aerospace-grade materials. Moreover, predicted erosion stemming from the model is compared directly with surface deformation measurements taken from the particle impact test procedure. It is shown that utilizing measured particle geometries in normal COR models leads to more robust predictions that accurately predict average

COR

values and estimate some of the stochasticity. It is also demonstrated that surface measurements of plastic deformation present on tested surfaces used in COR tests align with the predicted deformation. Therefore, these measurements can also serve as an auxiliary validation of the normal COR model.

在过去的几十年里，颗粒引起的侵蚀已被证明对涡轮机械有害。即使有了这么长的寿命，与粒子和发动机表面相关的复杂性也阻碍了简单有效的粒子反弹模型的发展。通常，粒子行为是通过研究恢复系数（COR）对航空航天材料的影响来统计推断的。这项工作建立在以前的发展，以获得一个正常的COR模型，更好地说明粒子几何形状在粒子表面相互作用的影响。该模型结合了直接从粒子中测量到的锯齿状、不规则形状，同时也分别模拟了粒子和表面的变形。因此，该模型可以原生地预测由于粒子撞击而发生的表面变形。虽然这个新模型已经开发出来适用于一般的颗粒冲击条件，但它与以20m/s和120m/s之间的速度正常入射的212μm - 250μm筛选石英在各种航空级材料上的正常恢复系数进行了比较。此外，由模型预测的侵蚀直接与从颗粒冲击试验程序中获得的表面变形测量结果进行了比较。结果表明，在正常的COR模型中使用测量的颗粒几何形状可以更准确地预测平均COR值并估计一些随机性。还表明，在COR试验中使用的测试表面上存在的塑性变形的表面测量值与预测变形一致。因此，这些测量也可以作为常规COR模型的辅助验证。

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引用次数: 0

Parametric modeling of cradle-to-gate carbon emissions from gas-atomized AISI 316L powders under closed-loop feedstock strategies 闭环给料策略下气雾化aisi316l粉末从摇篮到闸门碳排放的参数化建模

IF 4.6 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology

Pub Date : 2025-11-22 DOI: 10.1016/j.powtec.2025.121949

Paolo C. Priarone , Federico Simone Gobber , Stefania Cacace

This study introduces a parametric framework for the cradle-to-gate assessment of carbon emissions associated with the production of gas-atomized AISI 316L stainless steel powders intended for use in additive manufacturing and other powder metallurgy processes. The model provides a detailed representation of upstream material flows and includes all major unit operations involved in powder production, such as feedstock preparation, gas atomization, sieving and blending, and packing. By varying the composition of the feedstock charged into the atomizer crucible, the framework enables the estimation of carbon emissions across a wide range of scenarios reflecting alternative sourcing strategies. The case study on AISI 316L highlights the environmental benefits of integrating closed-loop material flows, including the recirculation of off-specification powders and the direct use of compatible metallic scrap. Furthermore, broadening the acceptable powder size range significantly improves atomization yield, thereby reducing the specific carbon intensity of usable powder output. Such an approach lays the foundation for the development of robust decision-support tools for process planning in gas atomization, with direct implications for industrial-scale powder production.

本研究引入了一个参数框架，用于从摇篮到闸门的碳排放评估，该评估与用于增材制造和其他粉末冶金工艺的气雾化AISI 316L不锈钢粉末生产相关。该模型提供了上游物料流的详细表示，包括粉末生产中涉及的所有主要单元操作，如原料制备，气体雾化，筛分和混合以及包装。通过改变注入雾化器坩埚的原料成分，该框架能够在反映替代采购策略的各种情况下估计碳排放量。AISI 316L的案例研究强调了集成闭环材料流的环境效益，包括不规范粉末的再循环和兼容金属废料的直接使用。此外，扩大可接受的粉末粒度范围可显著提高雾化收率，从而降低可用粉末输出的比碳强度。这种方法为气体雾化过程规划的强大决策支持工具的开发奠定了基础，对工业规模的粉末生产具有直接影响。

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引用次数: 0

Force/thermal prediction of lunar soil drilling based on DEM-FEM coupling method 基于DEM-FEM耦合法的月壤钻井力/热预测

IF 4.6 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology

Pub Date : 2025-11-22 DOI: 10.1016/j.powtec.2025.121955

Wenzhao Li , Xi Luan , Yibo Li , Yihong Huang

A DEM-FEM (discrete element method - finite element method) coupling method is proposed in this paper to simulate lunar soil sampling. The DEM and FEM are treated as two individual parts linked by the accumulated frictional work. In force calculation by DEM, the incremental filling technique is developed to shorten the calculation time and enable the deep sampling simulation of lunar soil. In thermal calculation by FEM, the radiation heat transfer, heat flux and heat conduction with lunar soil are embedded with corresponding subroutines. Meanwhile, the mathematical model of sampling variation with depth is derived. The results demonstrate that the simulation outcomes closely match the theoretical calculations and are well-suited for predicting the mechanical and thermal behavior of the drill in the lunar soil sampling process.

本文提出了一种DEM-FEM（离散元法-有限元法）耦合模拟月球土壤采样的方法。DEM和FEM被视为两个独立的部分，由累积的摩擦功连接起来。在DEM力计算中，为了缩短计算时间，实现对月壤的深度采样模拟，提出了增量填充技术。在有限元热计算中，月球土壤的辐射传热、热流密度和热传导都嵌入了相应的子程序。同时，推导了采样随深度变化的数学模型。结果表明，模拟结果与理论计算结果吻合较好，可以很好地预测钻孔机在月球土壤取样过程中的力学和热行为。

引用次数: 0

Process optimization of novel quasi-emulsion solvent diffusion technique for spherical crystallization of ethambutol hydrochloride 新型准乳液溶剂扩散法制备盐酸乙胺丁醇球形结晶工艺优化

IF 4.6 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology

Pub Date : 2025-11-21 DOI: 10.1016/j.powtec.2025.121954

Madhukiran R. Dhondale , Maan Singh , Ashish K. Agrawal , Sandeep Kulkarni , Dinesh Kumar

Powder flowability of active pharmaceutical ingredients (APIs) plays a paramount role during tablet manufacturing as many APIs show poor flowability and compressibility. Coprocessing of drugs by quasi-emulsion solvent diffusion (QESD) process is an effective strategy to improve its powder flowability and compressibility. In this study, ethambutol hydrochloride (ETB), an anti-tubercular drug was coprocessed with hydroxypropyl methyl cellulose (HPMC) E15 at 2.5 % w/v concentration following the novel QESD methodology. Optimization of process parameters is an essential step before proceeding for scale-up batches. Hence, the effect of process parameters on the spherical agglomerates was explored by design of experiment (DoE) approach. Central composite design (CCD) was employed to study the effect of important process parameters on the quality attributes of the spherical agglomerates. Statistical analysis by standard least square method revealed that aqueous phase: organic phase (AP:OP) ratio and stirring rate had most significant impact (p < 0.05) on span, bulk density, circularity, and yield of the agglomerates. The powder flowability was predominantly dependent on the agglomerate circularity, followed by bulk density and span. It was found that powder samples with reduced circularity showed cohesive nature as indicated by Carr's index calculation. Spectral and thermal analysis of the agglomerates revealed no changes in the solid-state of ETB. Also, no changes were noticed in the dissolution profile of tablets prepared from the spherical agglomerates of different batches. The influence of QESD process parameters on the quality attributes of agglomerates were statistically evaluated and a desirability of 0.88 was obtained indicating good prediction accuracy.

原料药的粉末流动性在片剂生产中起着至关重要的作用，许多原料药的流动性和压缩性都很差。准乳化液溶剂扩散（QESD）工艺是提高药物粉末流动性和压缩性的有效方法。本研究采用新型QESD方法，以抗结核药物盐酸乙胺丁醇（ETB）与羟丙基甲基纤维素（HPMC） E15在2.5% w/v的浓度下共加工。工艺参数的优化是进行批量放大前的必要步骤。为此，采用实验设计（DoE）的方法，探讨了工艺参数对球形团聚体的影响。采用中心复合设计（CCD）研究了重要工艺参数对球形团块质量属性的影响。标准最小二乘法统计分析表明，水相与有机相（AP:OP）比和搅拌速率对团聚体的跨度、容重、圆度和产量的影响最为显著（p < 0.05）。粉末流动性主要取决于团聚体圆度，其次是堆积密度和跨度。通过卡尔指数计算发现，圆度降低的粉末样品具有黏结性。对团聚体的光谱和热分析显示，固态的ETB没有变化。不同批次的球形团块制备的片剂溶出度无明显变化。统计评价了QESD工艺参数对团块质量属性的影响，期望值为0.88，表明预测精度较好。

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引用次数: 0