Polylactic acid - Wikipedia
Polylactic acid, also known as poly(lactic acid) or polylactide (PLA), is a plastic material. As a thermoplastic polyester (or polyhydroxyalkanoate) it has the backbone formula (C 3 H 4 O 2) n or [–C(CH 3)HC(=O)O–] n. PLA is formally obtained by condensation of lactic acid C(CH 3)(OH)HCOOH with loss of water (hence its name).
Synthesis and Biological Application of Polylactic Acid - PMC
Polylactic acid blocks and blends play significant roles in drug delivery, implants, and tissue engineering to great effect. This article describes the synthesis of polylactic acid (PLA) and its raw materials, physical properties, degradation, modification, and applications in the field of …
Polylactic acid (PLA): Properties, synthesis, and biomedical ...
Aug 5, 2024 · These mechanisms encompass hydrolytic, oxidative, thermal, microbial, enzymatic, chemical, and photodegradative processes. Hydrolysis plays a pivotal role in PLA degradation, as it leads to the cleavage of ester bonds, resulting in …
Perspectives of polylactic acid from structure to applications
Apr 29, 2021 · Polylactic acid (PLA) is one among such biopolymers, which is an aliphatic polyester derived from lactic acid (2-hydroxypropionic acid), that find wide applications in food packaging industry, tissue scaffolding, and biomedical devices.
Critical Review on Polylactic Acid: Properties, Structure,
Jun 17, 2022 · The structure of PLA becomes highly crystallized by incorporating CNT due to the formation of covalent bonds in the nanocomposites. Chemically oxidized CNT-filled PLA nanocomposites prepared via melt blending techniques exhibit better mechanical strength and thermal resistance than pure PLA .
Synthesis, properties, and applications of polylactic acid ...
Nov 3, 2022 · PLA is a green alternative substance for the manufacturing of biodegradable bioplastic derived from petrochemical sources. [11, 12] This study goes throughout an in-depth review of PLA, starting from the economic aspect of PLA production, PLA synthesis, as well as polymerization mechanisms.
Morphology, Thermo-Mechanical Properties and ...
The ester bonds in PLA are sensitive to both chemical hydrolysis and enzymatic chain cleavage [21,22]. Both PCL and PLA are often mixed with starch to increase biodegradability and reduce costs; however, the brittleness of these mixtures is a major disadvantage in many applications [ …
Biocompatibility, biodegradation and excretion of polylactic acid (PLA …
Polylactic acid (PLA) is the most commonly used biodegradable polymer in clinical applications today. Examples range from drug delivery systems, tissue engineering, temporary and long-term implantable devices; constantly expanding to new fields. ...
Frontiers | A Perspective on Polylactic Acid-Based Polymers Use for ...
Oct 10, 2019 · Polylactic acid (PLA), classified as an aliphatic polyester because of the ester bonds that connect the monomer units, has gained a key role in the biomedical field for a wide range of applications: suture threads, bone fixation screws, devices for drug delivery, just to scratch the surface.
An Optimized 3D Printer by Enhancing Material Properties and …
Nov 6, 2024 · Infill density is a significant parameter in 3D printing that directly impacts the internal structure and mechanical properties of printed parts . ... Hydrolysis can break down the ester bonds in PLA, reducing the molecular weight and leading to a more brittle material. Oxidation further accelerates degradation, causing discoloration and ...
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