Download Polymer Crystallization I: From Chain Microstructure to by Finizia Auriemma, Giovanni Carlo Alfonso, Claudio De Rosa PDF

By Finizia Auriemma, Giovanni Carlo Alfonso, Claudio De Rosa

The sequence Advances in Polymer technological know-how offers serious stories of the current and destiny tendencies in polymer and biopolymer technology. It covers all components of analysis in polymer and biopolymer technology together with chemistry, actual chemistry, physics, fabric technological know-how. The thematic volumes are addressed to scientists, even if at universities or in undefined, who desire to preserve abreast of the real advances within the coated issues. Advances in Polymer technological know-how enjoys a longstanding culture and reliable acceptance in its neighborhood. each one quantity is devoted to a present subject, and every evaluation severely surveys one element of that subject, to put it in the context of the quantity. The volumes usually summarize the numerous advancements of the final five to ten years and speak about them seriously, offering chosen examples, explaining and illustrating the real ideas, and bringing jointly many vital references of basic literature. On that foundation, destiny learn instructions within the zone may be mentioned. Advances in Polymer technology volumes therefore are vital references for each polymer scientist, in addition to for different scientists attracted to polymer technology - as an creation to a neighboring box, or as a compilation of designated details for the expert. evaluate articles for the person volumes are invited via the quantity editors. unmarried contributions will be especially commissioned. Readership: Polymer scientists, or scientists in similar fields drawn to polymer and biopolymer technological know-how, at universities or in undefined, graduate students

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References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 53 59 73 84 85 1 Introduction The uniaxial deformation of semicrystalline polymers having spherulitic or lamellar morphology transforms an initially isotropic material into oriented fibers. In semicrystalline polymers, the complex interwoven structure of amorphous and crystalline phases that are tightly intermingled [1] entails that the deformation process is complex [2, 3, 4, 5–9].

17. With an increase in comonomer content, the morphology of polymer crystals decays from lamella to granular crystallites. Because the crystallizable bonds are almost completely used by the crystallites at low temperatures, polymer chains trespass several crystallites to make a network in 3D space. In this sense, the crystallites act as physical crosslinking points, which enables homogeneous LLDPE samples with high enough comonomer content to perform as thermoplastic elastomers [70]. In ethylene-based homogeneous copolymers, relatively small comonomers such as propylene residues still have the possibility of entering the crystalline region of ethylene sequences [50].

26 are data for HPBDs that are models for random ethylene–1-butene (EB) copolymers. 2 mol% and molar masses ranging from 800 to 420,000 g/mol were studied [96]. These samples were first cooled from 200 C to 40 C at a rate of 10 C/min to develop a standard crystalline state. Then, the samples were heated to different annealing temperatures (Tmelt) for 5 min. The second-round crystallization temperatures (Tc_peak) on DSC cooling curves were compared to test for the memory effect of crystallization (see Fig.

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