Biodegradable poly (26 resultados)

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Paperback or Softback. Condición: New. Melt Spinning and Characterization of Biodegradable Micro- and Nanofibrillar Structures from Poly(lactic acid) and Poly(vinyl alcohol) Blends. Book.

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Taschenbuch. Condición: Neu. Poly ¿-hydroxybutyrate (PHB) | Biopolymer with Application in Biodegradable Plastics | Eliane Santana Gomes | Taschenbuch | Englisch | 2026 | Our Knowledge Publishing | EAN 9786209462030 | Verantwortliche Person für die EU: SIA OmniScriptum Publishing, Brivibas Gatve 197, 1039 RIGA, LETTLAND, customerservice[at]vdm-vsg[dot]de | Anbieter: preigu.…

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Condición: Sehr gut. Zustand: Sehr gut | Sprache: Englisch | Produktart: Bücher | The present study mainly focuses its attention on the investigation and the development of the biodegradable and biocompatible nanofi brillar poly(lactic acid) structures from poly(lactic acid) (PLA) and poly(vinyl alcohol) (PVAL) blends using the conventional melt spinning process (CMS) of thermoplastic polymer fibers. The CMS itself is a high productivity, solvent free and low energy consumption process. Owing to the combination of these outstanding benefi ts of the CMS and the "green" properties of PLA and PVAL, the studied and developed process provides an optimal solution for dealing with relevant challenges of our present age: the economic, highly productive and extremely eco-friendly fabrication of highly specialized products for biomedical applications such as scaffolds for tissue engineering. Another research activity gives special attention on the study of the morphological evolution of PLA/PVAL blend filaments along the spinline. Emphasis of the investigation is given on considering the axial strain rate (ASR) and tensile stress that influence the final state of deformation of dispersed PLA phase in PLA/PVAL blends. Owing to a new special self-constructed fiber-capturing device, pieces of the PLA/PVAL blend filaments are collected at different locations along the spinline. The morphology of the PLA/PVAL captured blend filaments in both longitudinal and cross-sectional directions are then investigated using scanning electron microscopy (SEM) technique. Comparing all the spinline parameter profi les, especially the ASR and tensile stress, with the morphological evolution of dispersed PLA phase along the spinline, the mechanism of the fi brillation process within fiber formation zone is elucidated. By adjusting the melt spinning conditions, for instance take-up velocity and mass flow rate, the final morphology of dispersed PLA phase in PLA/PVAL blends is controlled. In the present study, the infl uence of spinning conditions on the fi brillation process of polymer blends, on the example of PLA/PVAL blend systems, in an elongational flow within fiber formation zone are systematically and thoroughly investigated for the first time. The findings of the current work provide valuable insight into the morphology development of dispersed PLA phase and present basic requirements for producing nanofi brillar structures using a conventional melt spinning process.…

Taschenbuch. Condición: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Synthetic plastics produced mainly from petroleum, a non-renewable resource, have generated a large amount of plastic waste discarded in the environment over the years due to exorbitant consumption by the population, thus creating a huge problem because this material is very resistant to degradation. In this sense, this paper presents biopolymers, an alternative to conventional plastics, as they are obtained from renewable raw materials. Poly(beta-hydroxybutyrate) (PHB), the main representative of PHAs, derived from sugar cane, is a polyester produced and accumulated by various bacteria in the form of carbon and energy reserve granules. When deposited in biologically active environments, the biodegradation of this polymer will provide water and carbon dioxide, without releasing toxic residues. PHB can be synthesised biotechnologically by the bacterium Cupriavidus necator, which has high yields and productivity in obtaining this biopolymer, factors that are essential for reducing production costs.…

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Taschenbuch. Condición: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - The new environmental regulations drive the engineers to take a holistic approach in product design. The design must include: (a) materials from renewable resource, and (b) disposability in an environment that is ecologically compatible or under natural compost increases the desired organic content of soil. The book covers three important areas: (a) processing: thermomechanical environment and systematic changes of processing variables, (b) processing - structural evolution: rheology-induced structure development, rheology independent structure development, (c) processing - morphology properties relationships of porous and compact products. The selected studies suggest that morphologies i.e. level of orientation, the fraction of amorphous and crystallinity contents can be tailored rheologically, using the control of thermomechanical environment. Interestingly, a completely new paradigm of structural evolution i.e. a miscible polymer blend is rheologically independent, and produces continuous lamellar morphology. A number of porous biodegradable and bioresorbable, composite constructs, were developed, and their in-vitro mechano-chemical relevance was evaluated in simulated fluid.…

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Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The present study mainly focuses its attention on the investigation and the development of the biodegradable and biocompatible nanofi brillar poly(lactic acid) structures from poly(lactic acid) (PLA) and poly(vinyl alcohol) (PVAL) blends using the conventional melt spinning process (CMS) of thermoplastic polymer fibers. The CMS itself is a high productivity, solvent free and low energy consumption process. Owing to the combination of these outstanding benefi ts of the CMS and the 'green' properties of PLA and PVAL, the studied and developed process provides an optimal solution for dealing with relevant challenges of our present age: the economic, highly productive and extremely eco-friendly fabrication of highly specialized products for biomedical applications such as scaffolds for tissue engineering. Another research activity gives special attention on the study of the morphological evolution of PLA/PVAL blend filaments along the spinline. Emphasis of the investigation is given on considering the axial strain rate (ASR) and tensile stress that influence the final state of deformation of dispersed PLA phase in PLA/PVAL blends. Owing to a new special self-constructed fiber-capturing device, pieces of the PLA/PVAL blend filaments are collected at different locations along the spinline. The morphology of the PLA/PVAL captured blend filaments in both longitudinal and cross-sectional directions are then investigated using scanning electron microscopy (SEM) technique. Comparing all the spinline parameter profi les, especially the ASR and tensile stress, with the morphological evolution of dispersed PLA phase along the spinline, the mechanism of the fi brillationprocess within fiber formation zone is elucidated. By adjusting the melt spinning conditions, for instance take-up velocity and mass flow rate, the final morphology of dispersed PLA phase in PLA/PVAL blends is controlled. In the present study, the infl uence of spinning conditions on the fi brillation process of polymer blends, on the example of PLA/PVAL blend systems, in an elongational flow within fiber formation zone are systematically and thoroughly investigated for the first time. The findings of the current work provide valuable insight into the morphology development of dispersed PLA phase and present basic requirements for producing nanofi brillar structures using a conventional melt spinning process. 216 pp. Deutsch. …

Condición: New. Print on Demand pp. 216.

Condición: New. Print on Demand pp. 216.

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Taschenbuch. Condición: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - The present study mainly focuses its attention on the investigation and the development of the biodegradable and biocompatible nanofi brillar poly(lactic acid) structures from poly(lactic acid) (PLA) and poly(vinyl alcohol) (PVAL) blends using the conventional melt spinning process (CMS) of thermoplastic polymer fibers. The CMS itself is a high productivity, solvent free and low energy consumption process. Owing to the combination of these outstanding benefi ts of the CMS and the 'green' properties of PLA and PVAL, the studied and developed process provides an optimal solution for dealing with relevant challenges of our present age: the economic, highly productive and extremely eco-friendly fabrication of highly specialized products for biomedical applications such as scaffolds for tissue engineering. Another research activity gives special attention on the study of the morphological evolution of PLA/PVAL blend filaments along the spinline. Emphasis of the investigation is given on considering the axial strain rate (ASR) and tensile stress that influence the final state of deformation of dispersed PLA phase in PLA/PVAL blends. Owing to a new special self-constructed fiber-capturing device, pieces of the PLA/PVAL blend filaments are collected at different locations along the spinline. The morphology of the PLA/PVAL captured blend filaments in both longitudinal and cross-sectional directions are then investigated using scanning electron microscopy (SEM) technique. Comparing all the spinline parameter profi les, especially the ASR and tensile stress, with the morphological evolution of dispersed PLA phase along the spinline, the mechanism of the fi brillationprocess within fiber formation zone is elucidated. By adjusting the melt spinning conditions, for instance take-up velocity and mass flow rate, the final morphology of dispersed PLA phase in PLA/PVAL blends is controlled. In the present study, the infl uence of spinning conditions on the fi brillation process of polymer blends, on the example of PLA/PVAL blend systems, in an elongational flow within fiber formation zone are systematically and thoroughly investigated for the first time. The findings of the current work provide valuable insight into the morphology development of dispersed PLA phase and present basic requirements for producing nanofi brillar structures using a conventional melt spinning process.…

Condición: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. The present study mainly focuses its attention on the investigation and the development of the biodegradable and biocompatible nanofi brillar poly(lactic acid) structures from poly(lactic acid) (PLA) and poly(vinyl alcohol) (PVAL) blends using the conventio.…

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -The present study mainly focuses its attention on the investigation and the development of the biodegradable and biocompatible nanofi brillar poly(lactic acid) structures from poly(lactic acid) (PLA) and poly(vinyl alcohol) (PVAL) blends using the conventional melt spinning process (CMS) of thermoplastic polymer fibers. The CMS itself is a high productivity, solvent free and low energy consumption process. Owing to the combination of these outstanding benefi ts of the CMS and the 'green' properties of PLA and PVAL, the studied and developed process provides an optimal solution for dealing with relevant challenges of our present age: the economic, highly productive and extremely eco-friendly fabrication of highly specialized products for biomedical applications such as scaffolds for tissue engineering. Another research activity gives special attention on the study of the morphological evolution of PLA/PVAL blend filaments along the spinline. Emphasis of the investigation is given on considering the axial strain rate (ASR) and tensile stress that influence the final state of deformation of dispersed PLA phase in PLA/PVAL blends. Owing to a new special self-constructed fiber-capturing device, pieces of the PLA/PVAL blend filaments are collected at different locations along the spinline. The morphology of the PLA/PVAL captured blend filaments in both longitudinal and cross-sectional directions are then investigated using scanning electron microscopy (SEM) technique. Comparing all the spinline parameter profi les, especially the ASR and tensile stress, with the morphological evolution of dispersed PLA phase along the spinline, the mechanism of the fi brillationprocess within fiber formation zone is elucidated. By adjusting the melt spinning conditions, for instance take-up velocity and mass flow rate, the final morphology of dispersed PLA phase in PLA/PVAL blends is controlled. In the present study, the infl uence of spinning conditions on the fi brillation process of polymer blends, on the example of PLA/PVAL blend systems, in an elongational flow within fiber formation zone are systematically and thoroughly investigated for the first time. The findings of the current work provide valuable insight into the morphology development of dispersed PLA phase and present basic requirements for producing nanofi brillar structures using a conventional melt spinning process.TUDpress, Hüblerstraße 26, 01309 Dresden 216 pp. Deutsch.…

Taschenbuch. Condición: Neu. Melt Spinning and Characterization of Biodegradable Micro- and Nanofibrillar Structures from Poly(lactic acid) and Poly(vinyl alcohol) Blends | Nguy¿n Hoài An Tr¿n | Taschenbuch | 216 S. | Deutsch | 2016 | TUDpress Verlag der Wissenschaften GmbH | EAN 9783959080514 | Verantwortliche Person für die EU: TUDpress Verlag der Wissenschaften Dresden GmbH, Bergstr. 70, 01069 Dresden, mail[at]tudpress[dot]de | Anbieter: preigu Print on Demand.…