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Growth and form of spherulites

WebDec 22, 2016 · Glycol reduces the growth rate of vaterite and allowed for a time-resolved observation of morphology development, but was not considered a prerequisite for this category of spherulitic growth. Category 2 spherulites of aragonite have been produced in water/ethanol mixtures (Sand et al. 2012) but also in aqueous solutions without additional ... WebPolycrystalline patterns termed spherulites are present in a broad variety of systems including metal alloys, polymers, minerals, and have biological relevance as well (see e.g. semi-crystalline amyloid spherulites and spherultic kidney stones). The fact that similar polycrystalline patterns are observed in systems of very different nature suggests that a …

Spherulitic Growth in Crystalline Polymers SpringerLink

WebAug 1, 2005 · Spherulite crystals have been found in polymers, alloys, biological materials, organic compounds, liquid crystals, and … WebJun 1, 2007 · Skip to search form Skip to main content Skip to account menu. Semantic Scholar's Logo. Search 209,732,261 papers from all fields of science ... {“Kinematic” analysis of growth and coalescence of spherulites for predictions on spherulitic morphology and on the crystallization mechanism}, author={Maria Raimo}, … rockport beach texas hotels https://themarketinghaus.com

Classical and Nonclassical Theories of Crystal Growth

Webspherulite, spherical body generally occurring in glassy rocks, especially silica-rich rhyolites. Spherulites frequently have a radiating structure that results from an intergrowth of quartz and orthoclase. These spherical … WebNov 2, 2024 · The growth rates of Type-1 and Type-2, respectively, are compared as shown in Figure 4. Results show that there is no significant difference in the spherulites … WebApr 13, 2016 · In Fig. 3.3, the growth processes of the spherulitic crystal patterns have been represented. The characteristic morphology of the spherulite branched crystal … oti operation technology inc

On the growth and form of spherulites - arXiv

Category:On Spherulitic Growth and Cellulation in Polymers. A Unified …

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Growth and form of spherulites

Figure 7 from Growth and form of spherulites. Semantic Scholar

WebIn polymer physics, spherulites (from Greek sphaira = ball and lithos = stone) are spherical semicrystalline regions inside non- branched linear polymers. Their formation is … WebNov 2, 2024 · The growth rates of Type-1 and Type-2, respectively, are compared as shown in Figure 4. Results show that there is no significant difference in the spherulites growth rates between them. The initiation times (or incubation of first traces of nuclei) for Type-1 and Type-2 are dramatically different.

Growth and form of spherulites

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WebJan 1, 2014 · It is well known that highly viscous media form spherulites in non-polymeric systems, too. Actually, a quite similar scenario based on fingering instability and … Webphenomenon exist. The present work explains the growth and form of these fundamental condensed matter structures on the basis of a unified field theoretic approach. Our phase …

WebThe spherulites form in large numbers as semispherical dome-shaped objects on the cell surfaces, showing that ... Using optical microscopy, we have measured the growth of individual spherulites as a function of time and in various conditions. There is a lag time before nucleation of the spherulites. Once they have nucleated, they grow, each ... WebMay 1, 2016 · Abstract. Polymeric and non-polymeric materials often crystallize as spherulites when crystallized from viscous melts or solutions at large undercooling. The …

WebSpherulites frequently have a radiating structure that results from an intergrowth of quartz and orthoclase. These spherical bodies are thought to have formed as a consequence of rapid mineral growth after nucleation, … WebThis article is published in Polymer.The article was published on 1981-09-01. It has received 21 citation(s) till now.

WebAug 10, 2024 · The common crystal nuclei of polymers are divided into point-like nuclei and directional nuclei. The point-like nuclei gradually form spherulites during the growth process. Oriented nuclei form oriented structures during the growth process, such as skeletals that are strongly dependent on orientation during crystallization.

WebMay 1, 2009 · The growth pattern of spherulites in each protein solution was monitored and quantified using a linear polymerisation reaction model which allowed for … otiorhynchus ligneusWebG. Lugito and E. M. Woo*, “ Asymmetric Growth of Co-Crystallized Nano- and Micrometer-Sized Lamellae to Janus-Faced Spherulites in Poly(L ‑ lactic acid) with Amorphous Poly(methyl methacrylate) ”, ACS Crystal Growth&Design, 17, 5034 − 5037 (2024). otio reveilWebOn the growth and form of spherulites László Gránásy1*, Tamás Pusztai 1, György Tegze, James A. Warren2, Jack F. Douglas3 1Research Institute for Solid State Physics … rockport beach shoesWebThe degree of compactness of the spherulites was proposed to be determined by the number of active growth sites on the nickel particle surface. The morphology modifier was found to act as a growth inhibitor, decreasing the number of growth sites leading to more open spherulites. otiorhynchus nigerWebApr 13, 2016 · Full size image. Fig. 3.4. Growth of spherulite. a After 3 h and 40 min and b after 6 h and 20 min. Full size image. Fig. 3.5. Growth of spherulitic crystal pattern in SA-AA-Ce +4 - [Fe (Phen) 3] +2 -BrO 3 -H 2 SO 4 system. a After 13 h 15 min and b after 13 h 45 min [ 8] Full size image. rockport beckwith pt oxWebJan 15, 2024 · Historically, spherulites have been defined as a radial distribution of acicular crystals with a common center point, forming a spherical geometry. The center, however, … rockport beach park txWebMay 9, 2024 · The growth occurs in defects containing and condensed matter addressing environments of (bio)polymeric and biominerals involving outcomes. It turns out that it is … rockport beckwith slip on