Flow induced crystallization

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August undefined, 2024

WebMar 1, 2024 · Flow-induced crystallization in polymers is an important problem in both fundamental polymer science and industrial polymer processing. The key process of flow-induced nucleation occurs on a very ... WebThe remaining of the paper is divided in two parts. In the first part of the review, the basics of polymer crystallisation are summarized; the main factors acting on the process are …

Transient solutions of nonlinear dynamics in film blowing …

WebFlow-induced crystallization (FIC) is a typical nonequilibrium phase transition and a core industry subject for the largest group of … WebNov 22, 2013 · The so-called “short-term flow” protocol is widely applied in experimental flow-induced crystallization studies on polymers in order to separate the nucleation and subsequent growth processes [Liedauer et al. Int. Polym. Proc. 1993, 8, 236–244]. The basis of this protocol is the assumption that structure development during flow can be … slow vs fast metabolism

Onset of Flow-Induced Crystallization Kinetics of Highly Isotactic ...

WebJan 10, 2024 · Flow-induced crystallization of a polyethylene liquid above the melting temperature and its nonequilibrium phase diagram. January 2024; Physical Review Research 2(1) WebOct 10, 2024 · In flow induced crystallization (FIC) of polymer, the effective extension of molecular chains can dramatically change the structural dynamics and final morphology. Hierarchical structure formation can be controlled by flow parameters, leading to different macroscopic material properties. With complex chain structures such as polydispersity ... WebMar 30, 2024 · Understanding polymer crystallization with the presence of flow, or namely flow-induced crystallization (FIC), is crucial to optimize polymer processing … slow vs fast twitch fibres

Crystallization behavior of isotactic polypropylene containing a ...

Flow induced crystallization in isotactic polypropylene during …

WebDec 10, 2016 · The well dispersed OXA fibrils and shear flow induced PLLA chain orientation are responsible for the fast crystallization of the PLLA/OXA-240 samples. In … WebJul 6, 2024 · Flow-induced crystallisation of polymers from aqueous solution Introduction. In the natural world numerous strategies for efficient processing of materials have evolved 1, 2, and one... Results. PEO is crystallisable and water soluble, due to the similarity of its … We would like to show you a description here but the site won’t allow us. slow vt ecgWebThe nonlinear dynamics in film blowing process is simulated employing the governing equations of the system that include the flow-induced crystallization (FIC), i.e., the continuity, the two force balances (axial and circumferential), the energy, the crystallinity, and the constitutive equations of Phan-Thien Tanner (PTT) model. slow vs fast twitch muscle fibres

"WebNov 2, 2024 · The flow-induced formation and relaxation of the representative oriented shish-kebab structure were studied with synchrotron small-angle X-ray scattering (SAXS) method. The flow duration was varied from 2 to 6 s at an identical strain rate to reveal the effect of flow time on stability and dimension … " - Flow induced crystallization

Flow induced crystallization

WebMar 30, 2024 · Understanding polymer crystallization with the presence of flow, or namely flow-induced crystallization (FIC), is crucial to optimize polymer processing parameters and to understand phase transition under far-from equilibrium conditions, as FIC is essentially a typical nonequilibrium process. Current review aims to summarizes recent ... WebMay 22, 2015 · Flow-induced crystallisation (FIC) in polymers 1-3 is a central problem in polymer science. Flow dramatically enhances the nucleation rate, leading to much faster crystallisation kinetics and ...

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WebApr 9, 2024 · Nafar Sefiddashti, M.H.; Edwards, B.J.; Khomami, B. Atomistic Simulation of Flow-Induced Microphase Separation and Crystallization of an Entangled Polyethylene Melt Undergoing Uniaxial Elongational Flow and the Role of Kuhn Segment Extension. Polymers 2024, 15, 1831. https: ... WebJul 9, 2013 · Flow-induced crystallization (FIC) is a typical nonequilibrium phase transition and a core industry subject for the largest group of commercially useful polymeric materials: semicrystalline polymers.

WebFlow-Induced Crystallization of Poly(ether ether ketone): Universal Aspects of Specific Work Revealed by Corroborative Rheology and X-ray Scattering Studies. Macromolecules 2024 , 53 (22) , 10040-10050. WebNov 5, 2014 · Concomitant Crystallization in Propylene/Ethylene Random Copolymer with Strong Flow at Elevated Temperatures. Flow-induced crystallization of α- and γ-phases was studied for a propylene/ethylene random copolymer with 3.4 mol % ethylene at two high temperatures of 132 and 142 °C by combining a pressure-driven….

WebFeb 6, 2024 · Abstract. The recently reported crystallization-induced diastereomer transformation (CIDT) of a precursor to navoximod was investigated using online HPLC via a modified EasySampler probe that enables selective solution phase sampling of heterogeneous reaction mixtures. By employing both chiral and achiral stationary … WebJan 19, 2024 · In this work, the flow-induced crystallization of two polylactides (PLAs) with different microstructures (different l-lactic acid contents) is studied using simple shear, …

WebSep 2, 2015 · Flow-induced crystallization (FIC) of polymer melts is a fundamental issue of polymer physics. It is of clear theoretical significance, and very important in practical …

WebApr 9, 2024 · At high flow strength, a flow-induced crystallization (FIC) occurred, producing a semicrystalline material possessing a high degree of crystallinity and … slow vs fast shutter speedWebJan 1, 2016 · A modeling framework was presented to describe flow-induced crystallization of iPP at elevated pressures in multiple crystal phases and morphologies. The framework was constructed by … slow wagging cat tailWebWe systematically investigate the detailed structure in the flow-induced crystallization of a lightly cross-linked high-density polyethylene as a model semicrystalline polymer sample … slow vt 定義WebFlow-induced nucleation and crystallization are observed in conjugated small molecules and polymers, and are closely related to the flow-induced polymer conformational changes and enhanced mass and heat transfer observed during crystallization. slow vtWebJan 19, 2024 · In this work, the flow-induced crystallization of two polylactides (PLAs) with different microstructures (different l-lactic acid contents) is studied using simple shear, uniaxial extension and capillary flow experiments.In a simple shear and capillary flow, an increase in shear rate and a decrease in temperature were found to enhance the … slow wage growthWebOct 28, 2006 · We present a study on flow-induced crystallization of polymers filled with rigid particles. The numerical simulations reveal the interplay between filler particles, the … slow waitWebFeb 18, 2024 · The effects induced by the flow on polymer crystallization behavior can be summarized into three aspects, namely accelerated nucleation rate, modified crystal morphology, and newly formed crystal structure, which are all directly relevant to the end-use properties [11, 19].To attain the ultimate goal of predicting the polymer … slow vtとは