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颗粒学报(英文版)
颗粒学报(英文版)

郭慕孙

双月刊

1674-2001

jcsp@home.ipe.ac.cn

010-82629146

100080

北京中关村北二条1号中科院过程所内

颗粒学报(英文版)/Journal China ParticuologyCSCDCSTPCD北大核心EISCI
查看更多>>本刊以创精品与国际化为办刊方针,旨在反映中国颗粒学研究的最新成果、及时追踪国际颗粒学领域的最新动态。学报主要刊登国内外颗粒学领域中的研究、工程和应用方面的优秀原始论文,包括颗粒测试与表征、颗粒制备与处理、流态化、气溶胶和超微颗粒等。本刊不仅设有论坛、研究论文、研究简报等内容,还有书评、会议信息与报道、测试仪器进展等栏目,便于相关人士进行学术交流,并为科技成果的展示提供平台,信息十分丰富。本刊已陆续被美国化学文摘(CA),俄罗斯文摘杂志(AJ),剑桥科学文摘(CSA)以及中国科技论文与引文数据库(CSTPCD)收录。China PARTICUOLOGY, a bimonthly interdisciplinary journal in English, purports to present the best papers in research, engineering and application in the overall field of PARTICUOLOGY, including particle characterization, particle preparation, aerosol, fluidization and ultra-fine particles. The word PARTICUOLOGY was coined to correspond to its Chinese terminology, which denotes both the science and technology of particles. Although the journal is China-based, it serves as a medium for all accepted papers of international origin, especially the best papers representing current advances in the world. Besides scientific and engineering papers, the journal includes the following sections: R & D notes, Current events, Editorials reviews, Forum for comments, opinions and qualified speculations, News on books, instruments and meetings.Now, China Particuology has been indexed by CA, AJ , CSA and CSTPCD.??读者对象(Audiences): 中国颗粒学会会员、国内外从事颗粒学和颗粒技术研究和生产的大专院校师生、科研院所及企业的研究人员和技术人员。 Member of Chinese Society of Particuology, and researchers or experts who are engaged in the study of particle sciences and technology coming from colleges, institutes and corporations all over the world.
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    Preparation of calcium carbonate with microstructure and nanostructure from carbide slag for CO2 sequestration by using recyclable ammonium chloride

    Jin YaoQiuju ChenLi ZengWenjin Ding...
    1-9页
    查看更多>>摘要:Based on the composition characteristics of carbide slag and the application of polyvinyl chloride,a method of preparing calcium carbonate with microstructure and nanostructure by using carbide slag as a raw material and ammonium chloride as a leaching agent was proposed.The factors for the preparation of calcium carbonate and the effects of different conditions on the crystal phase,grain size,and morphology of calcium carbonate were systematically studied.The results showed that the nanosized calcium carbonate was prepared at 60 mL/min,25 ℃,no additional ammonia,and 60 min.The product of spherical vaterite was in accordance with the relevant standards for the industrial precipitation of cal-cium carbonate.Moreover,the reuse of carbonation filtrate was realized.The crystal phase,grain size,and morphology of the carbonation product could be controlled by adjusting the reaction conditions.The manuscript provided a new idea for resource utilization of carbide slag and preparing nanocalcium carbonate.

    Supersaturation-driven self-assembly formation of ceftriaxone sodium spherulites:From amorphous form to spherulites

    Shankun LiangYuchao NiuXueyan HuWu Xiao...
    10-19页
    查看更多>>摘要:Drug particles with spherical morphology possess amazing advantages in terms of particle flowability,mechanical properties,drug solubility,and bioavailability.The growth mechanism of drug spherulite is of great importance for the preparation and regulation of spherulites.Herein,ceftriaxone sodium spher-ulites were fabricated by the antisolvent crystallization method using dropwise addition of ceftriaxone sodium solution to acetone.Online observation of the whole crystallization process combined with electron microscopy technique revealed the spherical growth process from amorphous form to spher-ulites.As the supersaturation of the crystallization system was adjusted,the ceftriaxone sodium crystals transformed from amorphous form to spherulites.In the process of antisolvent crystallization with acetone as antisolvent,when the theoretical supersaturation degree S was higher than 2.62,the crys-tallization system tended to appear amorphous form;when S was between 2.57 and 2.62,the amorphous form transformed into clustered spherulites;when S was less than 2.57,the surface of spherulites will be covered with flaky crystal,which transformed into urchin-like type.With the understanding of the spherical growth mechanism,the ceftriaxone sodium spherulites prepared in this research with modi-fied supersaturation control had a low residue of antisolvent acetone,and the flowability was signifi-cantly improved.

    Cocrystals of carbamazepine:Structure,mechanical properties,fluorescence properties,solubility,and dissolution rate

    Jinbo OuyangLishan LiuYin LiMingyang Chen...
    20-30页
    查看更多>>摘要:Carbamazepine(CBZ)is an anticonvulsant with very low water solubility,presenting as a white crys-talline powder with poor mechanical properties and is hard to bend.To enhance CBZ's physicochemical properties,such as water solubility and mechanical properties,we selected six cocrystal coformers(CCFs):nicotinamide(NIC),benzamide(BZM),salicylic acid(SCA),fumaric acid(FMA),trimesic acid(TMA),and hesperetin(HPE).Six CBZ cocrystals were successfully prepared using the solution method.Fourier transform infrared spectroscopy(FT-IR),powder X-ray diffraction(PXRD),differential scanning calorimetry(DSC),and single crystal X-ray diffraction(SCXRD)were used to characterize the crystal structures and gain comprehensive insights into the six cocrystals.The mechanical,fluorescence,and solubility properties of the six cocrystals were tested.The results reveal that most of the prepared cocrystals exhibit improved water solubility and mechanical properties when compared to CBZ.Among them,the dissolution rate of cocrystals excluded from CBZ-HPE has increased by an average of 3 or 4 times compared to CBZ,while CBZ-HPE exhibits superior mechanical properties.Moreover,all six coc-rystals possess better fluorescence performance than CBZ.We thoroughly evaluated the mechanical properties of the cocrystals through both experimental and theoretical approaches.This work provides a new direction for studying drug cocrystals to improve the physicochemical properties of drugs.

    Size-fractionated carbonaceous particles and climate effects in the eastern region of Myanmar

    Mai Kai Suan TialNwe Nwe KyiMuhammad AminMitsuhiko Hata...
    31-40页
    查看更多>>摘要:This study reports on an investigation of fine and coarse carbonaceous particulate matters(PM)in Tachileik,eastern Myanmar,during the dry and wet seasons of 2022.The carbon compositions,including organic carbon(OC)and elemental carbon(EC),in each size(PM10-2.5,PM2.5-1.0,and PM1.0-0.5)were determined by a carbon analyzer.The average total mass concentration of the three fractions of particle samples during the dry season was higher(51.23±23.86 μg/m3)than that of the wet season(14.00±5.26 μg/m3).The results indicate that OC and EC levels were highest for PM1.0-0.5 during the dry season and the sizes were similar for both seasons.The OC/EC ratios varied in different seasons,from 1.93 to 4.40 and 4.13 to 5.25 in the dry and wet seasons,respectively.EC was sub-divided into char-EC and soot-EC;the char-EC/soot-EC in the dry season was higher than in the wet season,signifying that biomass burning is the main particle source during the dry season.However,vehicle emissions domi-nated during the wet season.The effective carbon ratio(ECR)suggested that finer particles contributed more to global warming.This information is important in terms of air quality control and mitigation in Myanmar and elsewhere.

    Particle morphology control for spherical powder fabrication using the ball milling process with DEM simulation

    Battsetseg JargalsaikhanKhulan UranchimegAmgalan BorKyung Sung Kim...
    41-50页
    查看更多>>摘要:Characteristics of spherical particles on copper powder and changing sizes were studied in a ball mill under various experimental conditions,such as different ball diameters,high rotation speeds,and milling times,using a discrete element method(DEM)simulation.This experiment has investigated the char-acteristics of spherical particle morphology evolution involved in the mechanical alloying of copper powder.The morphological evolution of the copper particle was analyzed using scanning electron mi-croscopy(SEM).A spherical copper particle was shown with a roundness value using imageJ software.The DEM was used to simulate the ball motion in a planetary ball mill,and the impact energy and shear energy generated during the collision were analyzed to estimate the contact number between the ball and the ball wall.Therefore,as the size of the ball decreased,the number of ball-to-ball and ball-to-wall contacts increased accordingly,and the spherical shape of the copper powder changed.

    Application of dynamic image analysis to the optical characterisation of fibrous bulk material

    Johannes LunewskiEberhard Schmidt
    51-60页
    查看更多>>摘要:Dynamic image analysis provides an automated evaluation method to determine the size and shape of multiple particles.This method represents a common application for ordinary bulk material.The latest draft of ISO 13322-2:2021 describes the state of the art,but lacks instructions for handling fibrous bulk material.Interlocking fibres complicate the measurement conditions and require a disentanglement of fibrous samples during a pre-dispersion step.A further error source includes the fibre orientation inside the measurement zone of the device.If the thresholding algorithm fails to differentiate between the fibre projection area and the background,a subsequent image optimisation solves the problem.This article addresses the mentioned problems by analysing cotton cellulose and polyacrylonitrile fibres.Besides the execution of a pre-dispersion step,the experiments compare the discrepancies between dry and wet dispersion.Here,the software packages PAQXOS and ImageJ perform the image evaluation.In this case,the wet dispersion setup with a subsequent image evaluation by ImageJ provides comprehensible results.

    Oblique impact breakage unification of nonspherical particles using discrete element method

    Di PengLiGe WangYuquan LinChongqiang Zhu...
    61-71页
    查看更多>>摘要:Particle breakage commonly occurs during processing of particulate materials,but a mechanistic model of particle impact breakage is not fully established.This article presents oblique impact breakage char-acteristics of nonspherical particles using discrete element method(DEM)simulations.Three different particle shapes,i.e.spherical,cuboidal and cylindrical,are investigated.Constituent spheres are agglomerated with bridging bonds to model the breakage characteristics under impact conditions.The effect of agglomerate shapes on the breakage pattern,damage ratio,and fragment size distribution is fully investigated.By using a newly proposed oblique impact model,unified breakage master surfaces are theoretically constructed for all the particle shapes under oblique impact conditions.The developed approach can be applied to modelling particulate processes where nonspherical particles and oblique impact breakage are prevailing.

    Self-cleaning effect and secondary swirling clean gas for suppressing particle deposition on vortex finder of gas cyclones

    Zhanpeng SunHuandi YangKaixuan ZhangZhiyuan Wang...
    72-87页
    查看更多>>摘要:In order to suppressing the particle deposition on vortex finder,a series of gas cyclones with the sec-ondary swirling clean gas were developed inspired by the gas purge effect.Effects of the width and extension length of the flow channel as well as the secondary inlet velocity and running time on the particle deposition pattern,the deposited particle mass and the cyclones'performance were experi-mentally investigated,respectively.The results show that the ultrafine particles(Stokes number Stk<0.0358)are mainly loose deposited on the walls under the secondary gas.Compare to the conventional cyclone with single tangential inlet,the total deposited particle mass of the improved cyclone has a maximum reduction more than 60%,and the collecting efficiency is increased up to 97.5%under the basically same pressure drop.The corresponding no-deposition area is increased by about 13%,and re-mains constant in spite of extending the running time.Moreover,an interesting phenomenon named"self-cleaning effect"of the vortex finder was captured for the gas cyclones,and mechanism of the secondary clean gas on the particle deposition is preliminarily analyzed.The results can deepen the understanding of the particle deposition on the vortex finder and guide the design of the anti-coking gas cyclones.

    Applications of artificial intelligence to lipid nanoparticle delivery

    Ye YuanYuqi WuJiabei ChengKaiyuan Yang...
    88-97页
    查看更多>>摘要:Lipid nanoparticles(LNPs)are nanocarriers composed of four lipid components and can be used for gene therapy,protein replacement,and vaccine development.However,LNPs also face several challenges,such as toxicity,immune activation,and low delivery efficiency.To overcome these challenges,artificial intelligence can be used to optimize the design and formulation of LNPs,as well as to predict their properties and performance.Moreover,antibody-targeted conjugation can be used to enhance the specificity and selectivity of LNPs by attaching an antibody that recognizes a specific antigen on the cell surface to LNPs.

    Cross-linked α-amylase aggregates on Fe3O4 magnetic nanoparticles modified with polydopamine/polyethyleneimine for efficient hydrolysis of starch

    Jiandong CuiXiuming TangQingqing MaYuyan Chang...
    98-105页
    查看更多>>摘要:In this work α-amylase was immobilized on magnetic Fe3O4 nanoparticles with polyethylenimine(PEI)/polydopamine(PDA)coating or 3-aminopropyl triethoxysilane(APTES)for the first time via adsorption-precipitation-cross-linking.Compared with the free α-amylase,the resultant magnetic cross-linked α-amylase aggregates(PEI/PDA-M-CLEAs and N-M-CLEAs)exhibited excellent thermal and storage stability as well as pH stability.After storage at 25 ℃ for 60 days,free α-amylase only retained 60%of its initial activity,while PEI/PDA-M-CLEAs and N-M-CLEAs retained 80%and 78%of their initial activities,respectively.Furthermore,N-M-CLEAs and PEI/PDA-M-CLEAs showed good reusability.After 6 repeated uses,PEI/PDA-M-CLEAs and N-M-CLEAs still maintained 65%and 62%of their initial activities,respec-tively.Especially,PEI/PDA-M-CLEAs and N-M-CLEAs exhibited higher starch hydrolysis efficiency than free α-amylase.The maximum dextrose equivalent(DE)values of starch hydrolysis by PEI/PDA-M-CLEAs and N-M-CLEAs reached 29.24%and 28.79%within 90 min,respectively.However,the maximum DE values of starch hydrolysis by the free α-amylase was only 27.89%even in 150 min.The magnetic cross-linked α-amylase aggregates could be introduced as effective biocatalyst for industrial applications in production of maltose syrups.