1、Polylactic acid (PLA)

Polylactic acid (PLA)-based nanocomposites are emerging as multifunctional, biodegradable materials, offering sustainable alternatives to petroleum-based plastics.

2、The Development of Poly(lactic acid) (PLA)

PLA has gained prominence in the packaging industry due to its resemblance to poly (ethylene terephthalate) (PET), facilitating ease of processing, alongside its biodegradability and 100% biobased content, making it the most sought-after bioplastic globally.

3、A review on polylactic acid‐based blends/composites and the role of

Role of reinforcement and compatibilizer to overcome shortcomings of PLA implant. Highlights advantages, limitations, and properties of different types of PLA implants. Discuss various clinical applications and future of PLA blends/composite scaffolds.

Polylactic Acid (PLA) Biocomposite: Processing, Additive Manufacturing

The goal of this study is to investigate the potential of polylactic acid (PLA) composite reinforced with natural fibres to enhance the quality of the produced composite.

Advances in Polylactic acid

Recent developments in the synthesis of PLA, particularly through optimized ring-opening polymerization techniques, have significantly improved its mechanical characteristics and biodegradability. This progress is expected to result in a 30 % rise in demand for food packaging by the year 2025.

High

In this study, a simple method of impregnation was developed to modify pine fibers (loblolly, mesh size of 90–180 μm, 30 wt %) with a solvent-borne epoxy to reinforce PLA.

A review on polylactic acid

Poly (lactic acid) (PLA) is one of the most promising biopolymers extensively used in food, packaging, medical and pharmaceutical industries. It is due to favorable physicochemical properties, in-situ hydrolytic degradation and well-established processing parameters.

(PDF) Critical Review on Polylactic Acid: Properties, Structure

Composite materials are emerging as a vital entity for the sustainable development of both humans and the environment. Polylactic acid (PLA) has been recognized as a potential polymer...

The Development of Poly(lactic acid) (PLA)

PLA has gained prominence in the packaging industry due to its resemblance to poly (ethylene terephthalate) (PET), facilitating ease of processing, alongside its biodegradability and 100% biobased content, making it the most sought-after bioplastic globally.

Cellulose modified by citric acid reinforced Poly (lactic acid) resin

In this study, we applied the CAC as reinforcing fillers in the fabrication of PLA composite with a high carboxylic acid group content on the cellulose surface. The modified cellulose and its fibrillated form by friction grinder were kneaded with PLA resin as fillers.

Polylactic acid (PLA) is a biodegradable polyester polymer produced through the biological fermentation of renewable resources such as corn starch or sugarcane. Its molecular structure is similar to natural polylactic acid, but its performance is superior. Due to its good biocompatibility, biodegradability and biosafety, polylactic acid has shown broad application prospects in many fields including medicine, agriculture and packaging. As a new type of material, the modified composite resin can significantly enhance the performance of polylactic acid by introducing different functional components, thus enabling it to play a greater role in specific application scenarios.

I. Composition and Characteristics of Polylactic Acid Modified Composite Resin

Polylactic acid modified composite resin typically contains several types of components:

1. Reinforcers: such as glass fibers, carbon fibers, nanofillers, etc., used to improve the mechanical strength and heat resistance of composite materials.
2. Toughening agents: such as thermoplastic polyurethanes, nitrile rubbers, etc., used to improve the toughness and impact resistance of the material.
3. Fillers: such as talcum powder, mica, etc., used to reduce the density of the material while increasing its rigidity and hardness.
4. Stabilizers: such as calcium stearate, zinc stearate, etc., used to regulate the processing temperature of the material and prevent oxidation.
5. Antibacterial agents: such as silver ions, copper ions, etc., used to enhance the antibacterial performance of the material.
6. Flame retardants: such as phosphate esters, triazines, etc., used to reduce the burning speed and toxicity of the material.
7. Other functional additives: such as ultraviolet absorbers, photoinitiators, etc., used to improve the optical properties and storage stability of the material.

II. Preparation Methods of Polylactic Acid Modified Composite Resin

There are various methods for preparing polylactic acid modified composite resin, mainly including:

1. Melt blending method: mixing reinforcing agents, toughening agents, fillers, etc. with polylactic acid, then cooling and molding.
2. Solution casting method: dissolving polylactic acid in an organic solvent to form a uniform solution, then dissolving various functional components in another organic solvent, mixing the two solutions and casting them into shape.
3. Extrusion blow molding method: mixing polylactic acid with various functional components, extruding through an extruder and blow molding.
4. Injection molding method: mixing polylactic acid with various functional components, then injection molding through an injection molding machine.

III. Applications of Polylactic Acid Modified Composite Resin

Due to its excellent performance, polylactic acid modified composite resin is widely used in various fields.

1. Medical Field: Polylactic acid modified composite resin can be used to manufacture artificial joints, bone repair materials, drug release systems, etc. For example, combining polylactic acid with hydroxyapatite nanoparticles can produce bone repair materials with good bioactivity.
2. Environmental Protection Field: Polylactic acid modified composite resin can be used to make biodegradable packaging materials, wastewater treatment materials, etc. For example, combining polylactic acid with starch can produce biodegradable packaging materials with good mechanical properties and biodegradability.
3. Agricultural Field: Polylactic acid modified composite resin can be used to make soil conditioners, fertilizer slow-release agents, etc. For example, combining polylactic acid with nitrogen sources can produce slow-release fertilizers with buffering function.
4. Construction Field: Polylactic acid modified composite resin can be used to make lightweight building materials, waterproof coatings, etc. For example, combining polylactic acid with cellulose can produce lightweight building materials with good waterproof performance.

Due to its excellent performance and broad application prospects, polylactic acid modified composite resin has become a research hotspot in the field of material science. By introducing different functional components, the performance of polylactic acid can be significantly enhanced, enabling it to play a greater role in specific application scenarios. With further research and technological advancements, it is believed that polylactic acid modified composite resin will play an even more important role in future developments.