Korea-Australia Rheology Journal最新文献_第4页

Synthesis of bioadhesive PHEA hydrogels without crosslinkers through in situ polymerization and sustained mechanical mixing 通过原位聚合和持续机械混合合成不含交联剂的生物粘性 PHEA 水凝胶

IF 2.2 4区工程技术

Korea-Australia Rheology Journal Pub Date : 2024-01-16 DOI: 10.1007/s13367-023-00084-9

Seo Yoon Kim, Ji-Won Kang, Eun Hui Jeong, Taeho Kim, Ha Lim Jung, Jang-Ung Park, Jinhan Cho, Jun Dong Park, Byoung Soo Kim

{"title":"Synthesis of bioadhesive PHEA hydrogels without crosslinkers through in situ polymerization and sustained mechanical mixing","authors":"Seo Yoon Kim, Ji-Won Kang, Eun Hui Jeong, Taeho Kim, Ha Lim Jung, Jang-Ung Park, Jinhan Cho, Jun Dong Park, Byoung Soo Kim","doi":"10.1007/s13367-023-00084-9","DOIUrl":"10.1007/s13367-023-00084-9","url":null,"abstract":"<p>This study presents a novel methodology for the fabrication of bioadhesives composed of poly(2-hydroxyethyl acrylate) (PHEA), which demonstrate superior mechanical properties. Hydrogels based on PHEA were effectively synthesized through a strategy that obviates the need for crosslinkers, utilizing in situ polymerization of high-concentration 2-hydroxyethyl acrylate (HEA) monomers under persistent agitation. Optimal operational conditions, such as polymerization duration and HEA monomer concentration, were screened through rheological evaluations. In addition, the introduction of glycerol to the PHEA hydrogels yielded improvements in water-retention capacity, thus resolving limitations frequently observed in conventional aqueous-based hydrogels. Tests assessing adhesive properties indicated that the PHEA hydrogels, synthesized without crosslinkers, exhibited exceptional adhesion capabilities that exceeded those of commercially available tissue sealants. This economically viable and readily scalable fabrication technique provides a compelling pathway for the creation of robust, biocompatible bioadhesives well-suited for biomedical utilization.</p>","PeriodicalId":683,"journal":{"name":"Korea-Australia Rheology Journal","volume":"36 1","pages":"71 - 78"},"PeriodicalIF":2.2,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139476708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the use of viscous micropumps for the transport of thixotropic fluids 利用粘性微型泵输送触变性流体

IF 2.2 4区工程技术

Korea-Australia Rheology Journal Pub Date : 2023-12-30 DOI: 10.1007/s13367-023-00083-w

M. Pourjafar-Chelikdani, M. Y. Heidari, A. Vakili, A. Abdollahi, A. Mahdavi Nejad, K. Sadeghy

{"title":"On the use of viscous micropumps for the transport of thixotropic fluids","authors":"M. Pourjafar-Chelikdani, M. Y. Heidari, A. Vakili, A. Abdollahi, A. Mahdavi Nejad, K. Sadeghy","doi":"10.1007/s13367-023-00083-w","DOIUrl":"10.1007/s13367-023-00083-w","url":null,"abstract":"<div><p>A cylinder rotating in an off-center position across a microchannel is known to generate a net flow for highly viscous Newtonian fluids. The mechanism is also known to be a viable option for the transport of viscoelastic or viscoplastic fluids albeit with a slight drop in performance. In the present work, the applicability of this mechanism is numerically investigated for the transport of (inelastic) time-dependent fluids obeying the structural-based Quemada model. By numerically solving the equations of motion, it is predicted that viscous micropumps can be used for the transport of thixotropic fluids although the obtained numerical results suggest that there exists a critical thixotropy number (a dimensionless number related to the fluid’s natural time) at which the flow rate is at its lowest value. It is shown that the critical thixotropy number can be avoided from the response of the fluid by properly choosing the geometrical parameters of the device. The general conclusion is that viscous micropumps can be deemed as an efficient mechanism for the transport of thixotropic fluids in microfluidic systems provided that the thixotropy number is sufficiently small, i.e., the fluid is strongly thixotropic. The device is predicted to be more suitable for anti-thixotropic fluids.</p></div>","PeriodicalId":683,"journal":{"name":"Korea-Australia Rheology Journal","volume":"36 1","pages":"55 - 69"},"PeriodicalIF":2.2,"publicationDate":"2023-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139070421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development and evaluation of dipalmitoyl phosphatidylcholine (DPPC) liposomal gel: rheology and in vitro drug release properties 二棕榈酰基磷脂酰胆碱（DPPC）脂质体凝胶的开发与评估：流变学和体外药物释放特性

IF 2.2 4区工程技术

Korea-Australia Rheology Journal Pub Date : 2023-12-30 DOI: 10.1007/s13367-023-00082-x

Premanarayani Menon, Yin Yin Teo, Misni Misran

{"title":"Development and evaluation of dipalmitoyl phosphatidylcholine (DPPC) liposomal gel: rheology and in vitro drug release properties","authors":"Premanarayani Menon, Yin Yin Teo, Misni Misran","doi":"10.1007/s13367-023-00082-x","DOIUrl":"10.1007/s13367-023-00082-x","url":null,"abstract":"<div><p>Liposomes have emerged as pivotal entities in the field of therapeutics, particularly in the domain of protein and vaccine administration. Hence, the development of novel liposomal formulations has garnered considerable interest. Liposomal delivery systems are considered advantageous as medication carriers, especially in the field of dermatology, owing to their moisturizing and restorative characteristics. Nevertheless, a significant drawback in the utilization of liposomes in topical applications is the inherent fluidity of the formulation, which might result in leakage following delivery to the skin surface. The use of liposomes inside the gel matrix, while maintaining the integrity of the vesicles, presents a potentially appealing method for topical administration. The primary objective of this work is to develop a liposomal-loaded gel formulation and assess its in vitro release characteristics as well as its rheological profile, including viscoelastic properties and flow behaviour. This study incorporated two different types of drugs, namely hydrophilic (specifically diphenhydramine hydrochloride) and hydrophobic (namely curcumin), inside its formulations. A liposome, composed of a long alkyl chain lipid such as DPPC with a chain length of 16, was synthesized using the thin film hydration process and subsequently integrated into a carbopol gel. It is noteworthy that the introduction of diphenhydramine hydrochloride (DPH) resulted in a substantial decrease in the elastic modulus and cohesiveness of the liposomal gel. Conversely, the incorporation of curcumin-loaded liposomal gel led to an increase in critical strain and cohesiveness when compared to the plain liposomal gel. In contrast, the liposomal gel containing DPH and curcumin demonstrated a reduced release rate compared to the plain liposomal gel, spanning a duration of 48 h. The in vitro release studies offer the potential for the utilization of liposomal gels as a sustained delivery system.</p></div>","PeriodicalId":683,"journal":{"name":"Korea-Australia Rheology Journal","volume":"36 1","pages":"45 - 54"},"PeriodicalIF":2.2,"publicationDate":"2023-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139069814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessing the suitability of various grades of polypropylene for injection molding through flow-length measurements 通过流动长度测量来评估不同等级的聚丙烯注塑成型的适用性

IF 2.2 4区工程技术

Korea-Australia Rheology Journal Pub Date : 2023-11-20 DOI: 10.1007/s13367-023-00081-y

Ahmed Hamdi

引用次数: 0

Comparative study on the rheological properties of natural and synthetic graphite-based anode slurries for lithium-ion batteries 锂离子电池用天然石墨和合成石墨负极浆料流变特性的比较研究

IF 2.2 4区工程技术

Korea-Australia Rheology Journal Pub Date : 2023-11-09 DOI: 10.1007/s13367-023-00079-6

Yeeun Kim, Eun Hui Jeong, Byoung Soo Kim, Jun Dong Park

{"title":"Comparative study on the rheological properties of natural and synthetic graphite-based anode slurries for lithium-ion batteries","authors":"Yeeun Kim, Eun Hui Jeong, Byoung Soo Kim, Jun Dong Park","doi":"10.1007/s13367-023-00079-6","DOIUrl":"10.1007/s13367-023-00079-6","url":null,"abstract":"<div><p>The rheological behavior of anode slurries for lithium-ion batteries, containing both natural and synthetic graphite as active material, was investigated with a focus on the different graphite morphologies. When the solid content is low, slurries containing synthetic graphite with a discotic shape display greater viscoelasticity than slurries containing natural graphite with a relatively more spherical shape. This result is attributed to the anisotropic geometry and interparticle force of the synthetic graphite. When the solid content is high, slurries comprising synthetic graphite exhibit lower viscoelasticity than slurries containing natural graphite. Tap density and sedimentation experiments reveal that, due to discotic shape and surface-to-surface attraction, synthetic graphite aggregates to a more densely packed aggregate than natural graphite. Consequently, in conditions of high solid contents where graphite has a greater chance of formation of densely packed aggregates, it is expected that synthetic graphite will have a more compact aggregate structure and a smaller effective volume. The smaller viscoelasticity of synthetic graphite slurries at more concentrated regions, where the effective volume of clusters plays more important role than in dilute regions, is attributed to the surface-to-surface aggregated structure of the synthetic graphite and the resulting small effective volume. Although the effective volume fraction of the graphite aggregates is reduced, slurries made of synthetic graphite demonstrate significant strain stiffening. Our findings suggest that the strain stiffening observed may originate from the anisotropic morphology, which possesses a significant surface area and is accompanied by jamming and high friction.</p></div>","PeriodicalId":683,"journal":{"name":"Korea-Australia Rheology Journal","volume":"36 1","pages":"25 - 32"},"PeriodicalIF":2.2,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135285843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A multi-particle sedimentation stability investigation of magnetorheological fluid using the DEM 利用 DEM 对磁流变流体的多颗粒沉降稳定性进行研究

IF 2.2 4区工程技术

Korea-Australia Rheology Journal Pub Date : 2023-11-04 DOI: 10.1007/s13367-023-00080-z

Na She, Bingsan Chen, Minrui Lu, Yongchao Xu, Xiaodong Peng, Shangchao Hung

{"title":"A multi-particle sedimentation stability investigation of magnetorheological fluid using the DEM","authors":"Na She, Bingsan Chen, Minrui Lu, Yongchao Xu, Xiaodong Peng, Shangchao Hung","doi":"10.1007/s13367-023-00080-z","DOIUrl":"10.1007/s13367-023-00080-z","url":null,"abstract":"<div><p>The settling stability of magnetorheological fluid (MRF) is an important aspect of magnetorheological research and an important indicator of MRF quality. The discrete element method (DEM) was proposed to study the multi-particle settling process of particles dispersed in silicon oil with different iron powder content, particle size, base viscosity, and added magnetic field. Then by preparing MRF, the zero-field viscosity, dynamic magnetic field viscosity, and settling stability of various MRF were measured and analyzed. The results show that the average kinetic energy of MRF settling decreases as particle content, particle size, and base fluid viscosity increase. With 50% iron powder content, 300 nm particle size, and 5% bentonite additive, MRF has the highest viscosity under zero field; under a dynamic magnetic field, the larger the particle size, the larger the viscosity; the MRF settling rate decreases by 18% with a change in iron powder content, decreases by 22.5% with a change in particle size to 300 nm, and decreases by 22% with a change in bentonite content. Under the application of a magnetic field, MRF hardly settles. The final experimental and simulation results are comparable, indicating that the MRF settlement characteristics can be predicted to some extent with the help of DEM simulation.</p></div>","PeriodicalId":683,"journal":{"name":"Korea-Australia Rheology Journal","volume":"36 1","pages":"1 - 14"},"PeriodicalIF":2.2,"publicationDate":"2023-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135774084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A comprehensive review of food rheology: analysis of experimental, computational, and machine learning techniques 食品流变学的综合综述:实验、计算和机器学习技术的分析

IF 1.3 4区工程技术

Korea-Australia Rheology Journal Pub Date : 2023-10-28 DOI: 10.1007/s13367-023-00075-w

Osita Sunday Nnyigide, Kyu Hyun

引用次数: 0

A review of bacterial biofilm formation and growth: rheological characterization, techniques, and applications 综述细菌生物膜的形成和生长:流变学表征、技术和应用

IF 1.3 4区工程技术

Korea-Australia Rheology Journal Pub Date : 2023-10-26 DOI: 10.1007/s13367-023-00078-7

Eunseo Jeon, Haneum Kim, Garim Kim, Doojin Lee

引用次数: 0

Applications of lattice Boltzmann method combined with smoothed profile method for particulate flows: a brief review 晶格玻尔兹曼法结合光滑剖面法在粒子流动中的应用综述

IF 1.3 4区工程技术

Korea-Australia Rheology Journal Pub Date : 2023-10-21 DOI: 10.1007/s13367-023-00077-8

Young Ki Lee

引用次数: 0

Investigation of intrinsic characteristics of polymer blends via molecular simulation: a review 高分子共混物固有特性的分子模拟研究综述

IF 1.3 4区工程技术

Korea-Australia Rheology Journal Pub Date : 2023-10-19 DOI: 10.1007/s13367-023-00076-9

Sohdam Jeong

{"title":"Investigation of intrinsic characteristics of polymer blends via molecular simulation: a review","authors":"Sohdam Jeong","doi":"10.1007/s13367-023-00076-9","DOIUrl":"10.1007/s13367-023-00076-9","url":null,"abstract":"<div><p>Computer simulation and modeling have proven to be powerful tools in the fields of engineering and polymer science. These computational methods not only enable us to verify experimentally observed behaviors, but also provide answers to unsolved phenomena. This review addresses the current status and trends of computational and theoretical studies in polymer blends. We briefly discuss the fundamental aspects of polymer blends, including experimental observations, theories, and a variety of molecular simulations and models for mixtures of two or more polymeric materials. In particular, this study deals with the description of coarse-grained techniques that can offer perspectives into the collective behavior and properties of complicated systems. Additionally, a detailed analysis of their structural, rheological, and mechanical properties via computation is also examined. Lastly, we summarize important findings and highlight points to be carefully considered in modeling polymer blends system accompanied by an outlook on the extension of current studies to complicated systems of many blending types.</p></div>","PeriodicalId":683,"journal":{"name":"Korea-Australia Rheology Journal","volume":"35 4","pages":"249 - 266"},"PeriodicalIF":1.3,"publicationDate":"2023-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13367-023-00076-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135667314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0