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Epitaxial effects on polymer crystallization

WebEpitaxial effects on polymer crystallization.- Micro-Structure of Banded Polymer Spherulites: New Insights from Synchrotron Nano-Focus X-ray Scattering.- Real-time fast structuring of polymers using synchrotron WAXD/SAXS techniques.- Strain-induced crystallization in natural rubber.- WebJan 1, 2015 · It was found that epitaxial crystallization is effective in governing the crystallization process of polymers. It can control the crystal structure and its orientation. For instance, the use of a special nucleation agent can generally produce only spherulitic … Readership: Polymer scientists, or scientists in related fields interested in polymer …

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WebJan 3, 2024 · Fig. 1, top left, shows the bulk PP containing nucleating heterogeneities with different efficiencies of nucleation.Impurity A is much more efficient than impurity B, i.e., it offers to the PP chains a lower heterogeneous nucleation free energy barrier (this can be due to its chemical nature, interactions with PP, epitaxial crystal structure match and … WebAug 18, 2024 · In polymer/CNT systems, the periodicity of the polymer crystal kebabs on CNTs was found to be much larger ... Under crystallization conditions, the pre-adsorbed PTCDI-C8 molecules in solution have an epitaxial effect on crystallization of PTCDI-C8 and guide the growth of PTCDI-C8 crystals. Since pre-adsorbed PTCDI-C8 molecules … costume catalogue https://billymacgill.com

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WebDec 20, 2024 · The epitaxial crystallization is a kind of interfacial crystallization. Therefore, the epitaxial crystallization of semi-crystalline polymer on the surface of a … WebFrom the dependence of the width of ribbons on the crystallization conditions (i.e., the cooling rate and annealing), it has been concluded that the polymer chain is aligned … WebFrom the dependence of the width of ribbons on the crystallization conditions (i.e., the cooling rate and annealing), it has been concluded that the polymer chain is aligned parallel to the striation directions and that the ribbon width corresponds to the lamellar width. madietane village

Epitaxial Crystallization of Isotactic Poly(Methyl Methacrylate) on ...

Category:The Influence of Soft-Epitaxial Crystallization on Polyamide

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Epitaxial effects on polymer crystallization

Understanding polymer nucleation by studying droplets crystallization …

Websingle polymer crystals3 (see Figure 2.2 (b)). During such a process the monomers forming a crystal can be joined up into chains by solid state polymerization, while the original “monomer” crystals are preserved. The final polymer crystal is obtained due to chemical reactions at the gas/solid or liquid/solid interface and not just as a ... WebThe final properties of semicrystalline polymer materials are affected by all of the following: the starting melt, paths of nucleation, organization of lamellar crystals and evolution of the final crystalline structures.

Epitaxial effects on polymer crystallization

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Webstudies have shown a nucleating or epitaxial effect of the inorganic surface,2-5 oftentimes stabilizing a crys-talline phase which is rarely found in the bulk polymer. This effect can be used to enhance the mechanical and thermal properties of the polymer, where the surface-nucleated crystalline phase has better mechanical and WebJan 1, 2024 · In this connection, surface-induced epitaxial crystallization shows significant advantages over other methods. It is well documented in numerous research studies that …

WebFeb 17, 2024 · Polymorphic polypropylene (PP) has been frequently selected for investigation due to their rich crystalline modifications, including monoclinic α-form, … Webwell-established that polymer chains orient and stretch in the flow field 11, 12. Subsequently, the oriented molecules coalesce to form fibrous bundles (shish), which act as a template to promote the epitaxial crystallization of folded-chain lamellae perpendicular to the shish, so as to form the shish kebab structure 13, 14. However, due

WebApr 4, 2024 · The perovskite LaCoO3 and La0.8Sr0.2CoO3 thin films were synthesized successfully by a polymer-assisted deposition method. The structural characterization and thermal decomposition measurements indicate that appropriately increasing the annealing temperature is helpful in improving the film crystallinity. Compared with LaCoO3 films, … WebJan 27, 2024 · The ED patterns proved the coexistence of PCL and PEG single crystals, and PEG crystallized on the both folding surfaces of PCL single crystals to form a triple-layered structure. 71 Similarly, Cheng et al. studied the solution crystallization behavior of PCL- b -PEO, in which the PCL and PEO blocks have similar Tc s. 72 They found that …

WebFeb 7, 2007 · Epitaxial crystallization is one kind of crystallization which happens under the effect of other materials, such interactions can block the chain mobility of polymer on substrates...

WebEpitaxy is defined as the oriented overgrowth of film material and typically refers to the growth of single crystal films. Homoepitaxy is the epitaxial growth of a deposit on a … madi estampariaWebStudies on the influence of foreign surfaces on the crystallization of polymers have demonstrated that the lamellae of the epitaxial polymer in the contact layer could be … costume carnevale super marioWebcrystallization sites can be separated and thus the nature of the polymer segments as yet uncrystallized becomes important5. While macromolecular crystallization can occur … madi fares