Preface: Novel Trends in Rheology VIII最新文献

{"title":"Sponsors: Novel Trends in Rheology VIII","authors":"ZatloukalMartin, MusilJan","doi":"10.1063/1.5109491","DOIUrl":"https://doi.org/10.1063/1.5109491","url":null,"abstract":"","PeriodicalId":378117,"journal":{"name":"Preface: Novel Trends in Rheology VIII","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124893934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Measuring techniques of rheological properties of rubber blends from industry","authors":"Martina Lopatková, J. Feranc, P. Alexy, I. Hudeč, J. Preťo","doi":"10.1063/1.5109512","DOIUrl":"https://doi.org/10.1063/1.5109512","url":null,"abstract":"Currently, process of extrusion and injection molding goes to the foreground also in the case of rubber blends. This is the reason to know complex rheological characteristic of processed system. Me...","PeriodicalId":378117,"journal":{"name":"Preface: Novel Trends in Rheology VIII","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122280885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of carbon nanotube addition on molecular orientation of polyethylene","authors":"R. Nishikawa, M. Yamaguchi","doi":"10.1063/1.5109508","DOIUrl":"https://doi.org/10.1063/1.5109508","url":null,"abstract":"Structure and properties for strands extruded from a capillary rheometer were studied using polyethylene (PE) containing carbon nanotubes (CNTs). We found that the CNT addition surprisingly enhances the chain orientation of PE. The oriented CNTs greatly accelerate the flow-induced crystallization of PE. These findings demonstrate that it will be a new method to enhance the rigidity of PE effectively.Structure and properties for strands extruded from a capillary rheometer were studied using polyethylene (PE) containing carbon nanotubes (CNTs). We found that the CNT addition surprisingly enhances the chain orientation of PE. The oriented CNTs greatly accelerate the flow-induced crystallization of PE. These findings demonstrate that it will be a new method to enhance the rigidity of PE effectively.","PeriodicalId":378117,"journal":{"name":"Preface: Novel Trends in Rheology VIII","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133943484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A framework for nonlinear viscoelasticity on the basis of logarithmic strain and projected velocity gradient","authors":"D. Yao","doi":"10.1063/1.5109492","DOIUrl":"https://doi.org/10.1063/1.5109492","url":null,"abstract":"Most existing nonlinear viscoelastic models are founded on the Finger tensor and its evolution during deformation and flow. In this paper, a new framework for nonlinear viscoelasticity on the basis of a projected velocity gradient tensor is presented. The pairing of the logarithmic strain tensor with the projected velocity gradient tensor is considered the cornerstone of the proposed formulation. The resulting linear relation for strain evolution in affine deformation provides a facile passage to connect small deformation mechanics with large deformation mechanics. Accordingly, proven linear viscoelastic models may now be extended to large deformation. Another salient feature is that the deformation is decoupled into stretching and rotation and each of them has its own evolution equation. The relaxation process is considered coaxial, whereas rotational retardation is included in the formulation to tackle with shear-related rotational softening. In this way, the similarity and difference between rotational deformation and coaxial deformation are explicitly explored. Strain shape functions are added to the linear version of the model to render more realistic nonlinear effects. The overall framework uses three elements for model formulation, namely, a stretch evolution equation, a rotation evolution equation, and a stress law. Example models are provided to illustrate the proper combination of these elements for creation of useful models. A particular model with a fractional relaxation process is used for model testing against typical observations in simple shear. With five model parameters (one for fractionality, two for linear viscoelasticity, one for straining, and the last one for rotation) is able to fit startup shear viscosity of a polystyrene solution in high accuracy. With additional understanding of the role of entropic strain in the relaxation process, simple and unified constitutive equations for modeling general 3D viscoelastic deformation and flow may be developed.Most existing nonlinear viscoelastic models are founded on the Finger tensor and its evolution during deformation and flow. In this paper, a new framework for nonlinear viscoelasticity on the basis of a projected velocity gradient tensor is presented. The pairing of the logarithmic strain tensor with the projected velocity gradient tensor is considered the cornerstone of the proposed formulation. The resulting linear relation for strain evolution in affine deformation provides a facile passage to connect small deformation mechanics with large deformation mechanics. Accordingly, proven linear viscoelastic models may now be extended to large deformation. Another salient feature is that the deformation is decoupled into stretching and rotation and each of them has its own evolution equation. The relaxation process is considered coaxial, whereas rotational retardation is included in the formulation to tackle with shear-related rotational softening. In this way, the similarity and ","PeriodicalId":378117,"journal":{"name":"Preface: Novel Trends in Rheology VIII","volume":" 15","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120943273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interdiffusion dynamics at the interface between two polystyrenes with different molecular weight probed by a rheological tool","authors":"Wissam Nakhle, M. Heuzey, P. Wood-Adams","doi":"10.1063/1.5109505","DOIUrl":"https://doi.org/10.1063/1.5109505","url":null,"abstract":"Interdiffusion between two molten polystyrenes is studied under small amplitude oscillatory shear (SAOS). Our rheological technique exploits differences in molecular weights and thus in viscosity, to investigate interdiffusion dynamics. The torque is measured during radial interdiffusion in a concentric binary sample, at constant temperature and frequency. We have previously confirmed that our rheological technique can be used to characterize solvent diffusion in molten polymers. Our results confirm that the interdiffusion rate is significantly increased due to oscillatory motion.","PeriodicalId":378117,"journal":{"name":"Preface: Novel Trends in Rheology VIII","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129081118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mixing of a viscoplastic fluid in an in-line mixer","authors":"Mehmet Ayas, J. Skočilas, T. Jirout","doi":"10.1063/1.5109502","DOIUrl":"https://doi.org/10.1063/1.5109502","url":null,"abstract":"","PeriodicalId":378117,"journal":{"name":"Preface: Novel Trends in Rheology VIII","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131287010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In-process rheological measurements during the manufacture of multiphase polymer systems","authors":"J. Covas, P. Teixeira, L. Hilliou","doi":"10.1063/1.5109503","DOIUrl":"https://doi.org/10.1063/1.5109503","url":null,"abstract":"","PeriodicalId":378117,"journal":{"name":"Preface: Novel Trends in Rheology VIII","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130585809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Different approaches for calculation of cumulative storage factor as novel parameter for analysis of reinforcement in complex polymer nanocomposites","authors":"M. Kráčalík","doi":"10.1063/1.5109506","DOIUrl":"https://doi.org/10.1063/1.5109506","url":null,"abstract":"","PeriodicalId":378117,"journal":{"name":"Preface: Novel Trends in Rheology VIII","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129589748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrospinning of poly(ethylene oxide) solutions - Quantitative relations between mean nanofibre diameter, concentration, molecular weight, and viscosity","authors":"P. Filip, P. Peer","doi":"10.1063/1.5109517","DOIUrl":"https://doi.org/10.1063/1.5109517","url":null,"abstract":"","PeriodicalId":378117,"journal":{"name":"Preface: Novel Trends in Rheology VIII","volume":"617 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132721461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On diffusive variants of some classical viscoelastic rate-type models","authors":"Mark Dostal'ik, V'it Prruvsa, Tom'avs Skvrivan","doi":"10.1063/1.5109493","DOIUrl":"https://doi.org/10.1063/1.5109493","url":null,"abstract":"We present a thermodynamically based approach to the design of models for viscoelastic fluids with stress diffusion effect. In particular, we show how to add a stress diffusion term to some standard viscoelastic rate-type models (Giesekus, FENE-P, Johnson--Segalman, Phan-Thien--Tanner and Bautista--Manero--Puig) so that the resulting models with the added stress diffusion term are thermodynamically consistent in the sense that they obey the first and the second law of thermodynamics. We point out the potential applications of the provided thermodynamical background in the study of flows of fluids described by the proposed models.","PeriodicalId":378117,"journal":{"name":"Preface: Novel Trends in Rheology VIII","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130914858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}