The Experts below are selected from a list of 33435 Experts worldwide ranked by ideXlab platform
Bee Soo Tueen - One of the best experts on this subject based on the ideXlab platform.
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Processing of Poly(Lactic Acid)
Polylactic Acid, 2019Co-Authors: Bee Soo TueenAbstract:Abstract Poly(Lactic Acid) (PLA) is a versatile Polymer which can be processed by conventional Polymer processing technologies, that is, extrusion, blow molding, injection molding, and thermoforming. Recently, PLA has also been widely used for 3D printing. In this chapter, these technologies and their recycling requirements are discussed. Good processability of PLA is a factor that enables PLA to have high potential as a mass-production substitute for nondegradable petroleum Polymers.
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Poly(Lactic Acid) Additives and Processing Aids
Polylactic Acid, 2019Co-Authors: Lee Tin Sin, Bee Soo TueenAbstract:Abstract In this chapter, the application of additives to modify Poly(Lactic Acid) is discussed. The addition of toughening agents and specialty agents can improve heat deflection, resistance, processability, etc. Importantly, the use of different types of coupling agents can be introduced to promote the interaction of filler/fibers in Poly(Lactic Acid) composites.
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Utilizations of Poly(Lactic Acid)
Polylactic Acid, 2019Co-Authors: Lee Tin Sin, Bee Soo TueenAbstract:Abstract Many people think that biodegradable Polymers have limited uses. However, the reality is that the applications of biodegradable Polymers include a wide spectrum of industries. In this chapter, readers are exposed to the use of Poly(Lactic Acid) (PLA) for domestic applications, such as food trays, toys, textiles, and carpets. PLA is also widely used for biomedical applications including drug carriers, orthopedic surgery, sutures, etc.
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Synthesis and Production of Poly(Lactic Acid)
Polylactic Acid, 2019Co-Authors: Lee Tin Sin, Bee Soo TueenAbstract:Abstract In this chapter, the Polymerization process of Poly(Lactic Acid) (PLA) is discussed. Information is given about the production of PLA from the very start of the process, including fermentation to produce Lactic Acid followed by lactide and finally catalysis conversion of prePolymer.
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Thermal Properties of Poly(Lactic Acid)
Polylactic Acid, 2019Co-Authors: Lee Tin Sin, Bee Soo TueenAbstract:Abstract Thermal aspects are important in relation to their effect on the properties of Poly(Lactic Acid) (PLA). The thermal properties and crystallinity of PLA are interrelated. Importantly, the l and d stereochemistry have an effect on crystallization, which consequently affects the melting temperature and glass transition temperature of PLA. CoPolymers and additives can be helpful, due to the improvement in the thermal transition, giving better processability.
Jöns Hilborn - One of the best experts on this subject based on the ideXlab platform.
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Poly(Lactic Acid) fiber : An overview
Progress in Polymer Science, 2007Co-Authors: Bhuvanesh Gupta, Nilesh Revagade, Jöns HilbornAbstract:Poly(Lactic Acid) (PLA) has generated great interest as one of the most innovative materials being developed for a wide range of applications. The Polymer is thermoplastic and biodegradable, which makes it highly attractive for biological and medical applications. It can be transformed by spinning into filaments for subsequent fabrication of desirable textile structures. Spinning may be accomplished by various routes, each with its merits and demerits. The medical applications of this Polymer arise from its biocompatibility: the degradation product, Lactic Acid, is metabolically innocuous. The fibers may be fabricated into various forms and may be used for implants and other surgical applications such as sutures. Tissue engineering is the most recent domain where Poly(Lactic Acid) is being used and is found to be one of the most favorable matrix materials. The present article presents a critical review on the production of Poly(Lactic Acid) fiber by various methods, along with correlations between structure and properties of the fibers. The applications of these fibers in various domains are also discussed.
Marcos L. Dias - One of the best experts on this subject based on the ideXlab platform.
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Rheological behavior of Poly(Lactic Acid)/synthetic mica nanocomposites.
Materials science & engineering. C Materials for biological applications, 2013Co-Authors: Diego H. S. Souza, Cristina T. Andrade, Marcos L. DiasAbstract:Poly(Lactic Acid) nanocomposites were prepared with three synthetic fluoromicas in a twin-screw extruder. Sodium and two organomodified synthetic fluoromicas at different compositions were used. The effect of mica type and composition on the rheological behavior of the nanocomposites was evaluated. The sodium fluoromica did not have a significant effect on the Poly(Lactic Acid) rheological properties, while addition of the organophilic micas to Poly(Lactic Acid) has a strong effect on the rheology, showing a pronounced shear thinning behavior. The dynamic rheological studies revealed that the nanocomposites with organomica have a higher viscosity and more pronounced elastic properties than neat Poly(Lactic Acid). Both storage and loss moduli increased with mica content.
Bhuvanesh Gupta - One of the best experts on this subject based on the ideXlab platform.
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Poly(Lactic Acid) fiber : An overview
Progress in Polymer Science, 2007Co-Authors: Bhuvanesh Gupta, Nilesh Revagade, Jöns HilbornAbstract:Poly(Lactic Acid) (PLA) has generated great interest as one of the most innovative materials being developed for a wide range of applications. The Polymer is thermoplastic and biodegradable, which makes it highly attractive for biological and medical applications. It can be transformed by spinning into filaments for subsequent fabrication of desirable textile structures. Spinning may be accomplished by various routes, each with its merits and demerits. The medical applications of this Polymer arise from its biocompatibility: the degradation product, Lactic Acid, is metabolically innocuous. The fibers may be fabricated into various forms and may be used for implants and other surgical applications such as sutures. Tissue engineering is the most recent domain where Poly(Lactic Acid) is being used and is found to be one of the most favorable matrix materials. The present article presents a critical review on the production of Poly(Lactic Acid) fiber by various methods, along with correlations between structure and properties of the fibers. The applications of these fibers in various domains are also discussed.
Yunxuan Weng - One of the best experts on this subject based on the ideXlab platform.
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A Review: Research Progress in Modification of Poly (Lactic Acid) by Lignin and Cellulose
Polymers, 2021Co-Authors: Sixiang Zhai, Qingying Liu, Yuelong Zhao, Hui Sun, Biao Yang, Yunxuan WengAbstract:With the depletion of petroleum energy, the possibility of prices of petroleum-based materials increasing, and increased environmental awareness, biodegradable materials as a kind of green alternative have attracted more and more research attention. In this context, Poly (Lactic Acid) has shown a unique combination of properties such as nontoxicity, biodegradability, biocompatibility, and good workability. However, examples of its known drawbacks include poor tensile strength, low elongation at break, poor thermal properties, and low crystallization rate. Lignocellulosic materials such as lignin and cellulose have excellent biodegradability and mechanical properties. Compounding such biomass components with Poly (Lactic Acid) is expected to prepare green composite materials with improved properties of Poly (Lactic Acid). This paper is aimed at summarizing the research progress of modification of Poly (Lactic Acid) with lignin and cellulose made in in recent years, with emphasis on effects of lignin and cellulose on mechanical properties, thermal stability and crystallinity on Poly (Lactic Acid) composite materials. Development of Poly (Lactic Acid) composite materials in this respect is forecasted.
