Results 21 to 30 of about 6,794,876 (284)
Numerical Simulation of the Non-Isothermal Co-Extrusion Fiber Spinning with Flow-Induced Crystallization [PDF]
Journal of Applied Fluid Mechanics, 2018 In this work, the numerical simulation of the non-isothermal steady co-extrusion fiber spinning with flow-induced crystallization is explored. The model is based on the formulation originally proposed by China et al.
B. E. García +3 more
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A Phenomenological Model for Flow-Induced Crystallization
Journal of Reinforced Plastics and Composites, 1999 The Hamiltonian Bracket Formulation combined with the Avrami equation was used to develop a model for the flow-induced crystallization of polymers. The amorphous part of the chain was modeled as a non-linear Hookean dumbbell and the crystalline part as a rigid rod.
I. S. Dairanieh +2 more
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Crystallization and Dissolution of Flow-Induced Precursors [PDF]
Physical Review Letters, 2008 We make use of a specially synthesized linear high density polyethylene with a bimodal molecular weight distribution (MWD) to demonstrate that it is possible to produce a suspension of extended-chain (shish) crystals only. Such a suspension can be generated at high temperatures, above but close to the equilibrium melting temperature of the ...
Balzano, L. +4 more
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Flow induced crystallization: Effect of flow strength and temperature
, 2004 Structure development during flow-induced crystallization (FIC)influences to a high degree the final propertiesof the material and, therefore, it is important to understand this process. The aim of this work is to studyexperimentally the influence of the deformation and the thermal history on FIC of isotactic polypropylenes(iPP’s).
Hristova, D.G. +2 more
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Crystallization-Induced Fluid Flow in Polymer Melts Undergoing Solidification
, 2016 Crystallization-Induced Fluid Flow in Polymer Melts Undergoing ...
Donghua Xu (1271091) +2 more
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Application of Two-Dimensional Correlation Analysis to Explosives Detection and Polymer Crystallization [PDF]
, 2010 This thesis presents two novel applications of two-dimensional (2D) correlation analysis: (1) long standoff detection of explosives and (2) morphology development in semicrystalline materials. Due to the dangers of improvised explosive devices (IEDs),
Smirnova, Diana Sergeievna
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Flow-induced crystallization of polyethylene melts [PDF]
Journal of Materials Science, 1975 In situ optical observations have been made of the way polyethylene melt can crystallize whilst subject to certain longitudinal velocity gradients. In general crystallization is seen to occur as the generation of fibres 5 to 50 μm in diameter. Hydrodynamic considerations lead to the conclusion that the externally applied velocity field is responsible ...
M. R. Mackley, F. C. Frank, A. Keller
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Evolution of green in-situ generated polyamide nanofibers controlled by viscoelasticity
eXPRESS Polymer Letters, 2021 The study scrutinizes the coincidental formation and stabilization of bio-based polyamide (PA) nanofibers within biodegradable polylactide (PLA) in a single stage.
R. Hosseinnezhad +3 more
doaj +1 more source
e-Polymers, 2022 We propose a pressure-induced flow (PIF) processing method for the simultaneous enhancement of strength, toughness, and heat resistance of biodegradable poly(butylene succinate) (PBS). The pressure and temperature were systematically adjusted to optimize
Kuang Tairong +7 more
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A molecular model for flow induced crystallization of polymers
, 2002 International audienceWe present in this paper a thermodynamic model for flow induced crystallization of a thermoplastic. The thermomechanical framework (generalized standard materials) allows us to couple in a very natural way the kinetics of ...
Ammar, Amine, Poitou, Arnaud
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