Flow induced crystallization
WebJan 1, 2024 · When polymer crystallization is induced by flow elongation, the semicrystalline morphology is affected by the orientation. The most obvious effects induced during flow are ascribed to kinetic and morphologic aspects, where in comparison with quiescent conditions the developed crystals trend to evolve from spherical to elongated … WebSep 9, 2016 · Flow-induced crystallization (FIC) is a non-equilibrium thermodynamic phase transition occurring in daily industrial processing of semicrystalline polymers with an annual consumption of hundred ...
Flow induced crystallization
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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 … WebAug 3, 2024 · We propose a unified thermodynamic model of flow-induced crystallization of polymer (uFIC), which incorporates not only the conformational entropy reduction but …
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…. 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.
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 ... WebJan 8, 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 …
WebThe superscript "T" denotes thermally induced crystallization, whereas the superscript "f" denotes flow-induced crystallization. All variables are per unit volume and are …
WebNov 7, 2013 · The general phenomenon of shear-induced crystallization (SIC), or flow-induced crystallization (FIC) has been studied extensively, both theoretically and … binary semiconductor company limitedWebNov 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 … cyprus flights 2016WebThe Role of Macromolecular Architecture in Flow-Induced Crystallization. RESEARCHER: Bo Shen. Semicrystalline polymers are processed predominantly from the melt, for … binary semaphore in c exampleWebApr 9, 2024 · At high flow strength, a flow-induced crystallization (FIC) occurred, producing a semicrystalline material possessing a high degree of crystallinity and primarily a monoclinic lattice structure. This FIC phase formed at a temperature (450 K) high above the quiescent melting point (≈400 K) and remained stable after cessation of flow for ... cyprus flights newcastleWebFeb 15, 2024 · The PPS melt is under a complex flow field and thermal condition during the injection molding process that results in flow-induced crystallization (FIC). According … binary sequence meaningWebApr 9, 2024 · At high flow strength, a flow-induced crystallization (FIC) occurred, producing a semicrystalline material possessing a high degree of crystallinity and … binary semiconductorWebFeb 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 … binary serialization