Durability of Biodegradable Polymer Nanocomposites

Area of Science:

• Materials Science
• Polymer Science
• Environmental Science

Background:

• Biodegradable polymers (BP) offer sustainable alternatives to conventional plastics, addressing environmental concerns.
• Advancements in biorefineries have produced BPs with properties comparable to commodity plastics, including polyesters, starch, and cellulose.
• Nanofillers can enhance BP properties and control degradation rates, leading to biodegradable polymer nanocomposites (BPN).

Purpose of the Study:

• To review current literature on the environmental aging and durability of BPN.
• To investigate the role of nanofillers in the performance and degradation of BPN.
• To provide insights for designing BPN with tailored durability and degradation properties.

Main Methods:

• Summarized recent literature on environmental aging tests for BPN.
• Analyzed data on thermal, photo-oxidative, water absorption, hygrothermal, and creep aging.
• Considered models describing the durability performance of BPN.

Main Results:

• Incorporating nanofillers can improve BPN durability and attenuate mechanical property loss.
• Poor nanofiller dispersion can accelerate degradation, depending on structural integrity and interfacial adhesion.
• Environmental aging significantly affects BPN properties, with varying impacts based on nanofiller type and dispersion.

Conclusions:

• Nanofillers play a crucial role in the durability of BPN under environmental stress.
• Understanding nanofiller dispersion and interfacial adhesion is key to optimizing BPN performance.
• Models for BPN durability can guide the design of materials with predictable degradation and longevity.