Green Copolymers Based on Poly(Lactic Acid)-Short Review.

Area of Science:

• Polymer Science
• Materials Science
• Green Chemistry

Background:

• Polylactic acid (PLA) is a biodegradable, biocompatible polymer derived from renewable resources like lactic acid.
• PLA offers advantages in packaging and medicine but suffers from brittleness and high transition temperatures.
• Copolymerization is a key strategy to overcome PLA's limitations and tailor its physical properties.

Purpose of the Study:

• To provide a comprehensive overview of polylactic acid (PLA) copolymerization.
• To discuss scientific findings, types of PLA copolymers, and their applications.
• To review PLA synthesis methods and the role of catalysts.

Main Methods:

• Literature review of scientific findings on PLA copolymerization.
• Description of three main PLA synthesis methods: azeotropic dehydrative condensation, direct poly-condensation, and ring-opening polymerization (ROP).
• Discussion on the influence of catalysts, including stannous octoate (Sn(Oct)2), on PLA synthesis.

Main Results:

• Copolymerization significantly improves PLA's physical properties, yielding desirable materials.
• Various PLA copolymer architectures (branched, star, grafted, block) have been developed.
• PLA copolymers show significant potential in pharmaceutical and biomedical applications.

Conclusions:

• Copolymerization is an effective approach to enhance polylactic acid properties for diverse applications.
• Understanding PLA synthesis methods and catalyst selection is crucial for tailoring material properties.
• PLA copolymers represent a promising class of materials for advanced applications, particularly in the medical field.