Polymer lamellar thickness
Polymers are composed of long molecular chains which form irregular, entangled coils in the melt. Some polymers retain such a disordered structure upon freezing and readily convert into amorphous solids. In other polymers, the chains rearrange upon freezing and form partly ordered regions with a typical size of the order 1 micrometer. Although it would be energetically favorable fo… WebThe degradation of mechanics properties is which most challenging point for the development from plastic mechatronic recycling processes. Remelting and fleece forming contained for the mechanical process are a part of degrading are recycled plastics. For this study, virgin high-density polyethylene (HDPE) was artificial to be recycled by remelting …
Polymer lamellar thickness
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WebMay 12, 2014 · Polybutene-1 (PB-1), a typical semicrystalline polymer, ... In this work, the effect of crystalline lamellar thickness and stretching temperature on the cavitation …
WebPasi Vahimaa his MSc in 1994 and PhD in 1996, both in Department of Physics, University of Joensuu, Finland. Before becoming a professor in Theoretical optics in 2007 he was researcher and senior assistant in University of Joensuu and a Project manager in Heptagon Oy. His long term scientific visits to foreign universities include 2 months stay in … WebDec 7, 2015 · Precise control of orientation and crystallinity is achieved in regioregular poly(3-hexylthiophene) (P3HT) thin films by using high-temperature rubbing, a fast and …
WebSep 28, 2024 · Lamellar thickening of semicrystalline polymers is a fascinating subject in the realm of polymer physics as lamellar thickness plays a vital role in deciding the … WebWith the revised procedure, the lamellar thickness and long period can be obtained readily from real scattering, whether for a lamellar two-phase system or a lamellar system with a …
SAXS measurements were performed on a Kratky compact camera from AntonPaar GmbH equipped with focusing X-ray optics from AXO Dresden GmbH and with a 1D detector Mythen2 R 1K from Dectris. A temperature-controlled sample holder enabled in-situ isothermal crystallization experiments at different … See more Rotor-synchronized CODEX (center band-only detection of exchange) experiments were performed on a 400 MHz Bruker Avance system with a 13C Larmor … See more Polarization microscopy experiments were performed on an Olympus BX51 microscope equipped with a Linkam hot stage THMS600, temperature controller … See more DSC measurements were performed with a UNIX DSC 7 from Perkin Elmer. Nitrogen was used as a purging gas, temperature calibration was performed with … See more
WebApr 10, 2024 · The polymer used in this study was PTT. The crystallization and melting processes of PTT isothermally crystallized at Tc between 90.3 and 211.2 °C were … how to store and organize greeting cardsWebThe lamellar thickness of poly (ethylene oxide) (PEO) film established from a gel state was investigated in an effort to understand the crystalline structure which forms from the … how to store and freeze fresh mustard greensWebJan 1, 2002 · The molecular weight dependence of the lamellar thickness of poly(e-caprolactone), a linear biodegradable and biocompatible polyester, was investigated by … how to store api data in reduxWebJul 20, 2004 · Lamellar thickness, melting temperature, and density were measured for bulk polyethylene crystallized by the application of a fixed pressure to molten polymer at different temperatures. Melting temperature varied from 135.2° to 139.2°C, and density varied from 0.9759 to 0.9842 g/cc. Small‐angle x‐ray diffraction yields two maxima which apparently … how to store and preserve antique quiltsWebThe femtosecond laser was used to make the posterior corneal lamellar interface and trephine (side) cut in 20 eye bank globes and 9 eye bank corneoscleral buttons. Laser parameters were energy 7.4±0.1 μJ (lamellar cut) and 8.7±0.1 μJ (trephination cut), spot size 2.4 μm, firing rate 15 kHz, and trephination diameter 6.0 to 8.0 mm. how to store api dataWebNov 16, 2024 · The linear extrapolative method assumes that the initial lamellar thickness of polymer crystal (l), ... However, the values of the lamellar thickness dependent parameter, a, for α′ is 10.83, much larger than that for the α phase, 7.85. Based on the nonlinear extrapolation theory, ... read the novel\u0027s extra light novel onlineWebMay 16, 2016 · With a focus on structure-property relationships, this book describes how polymer morphology affects properties and how scientists can modify them. The book covers structure development, theory, simulation, and processing; and discusses a broad range of techniques and methods. • Provides an up-to-date, comprehensive introduction … how to store and preserve old photographs