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Related Concept Videos

Bioplastics01:27

Bioplastics

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Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
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Microbial Bioremediation of Plastics01:28

Microbial Bioremediation of Plastics

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Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...
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Polymers02:34

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The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the...
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Types of Step-Growth Polymers: Polyesters01:20

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The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
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The microbial conversion of organic matter into biofuels holds potential as a renewable energy source. Among biofuel sources, microalgae are recognized as a highly efficient and adaptable feedstock for biodiesel production, owing to their rapid biomass accumulation, elevated lipid productivity, and capacity to proliferate in diverse aquatic systems, including freshwater, marine, and wastewater habitats. Unlike terrestrial crops, microalgae do not compete for land and can achieve significantly...
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Functional Bio-Based Additives for Sustainable Polymers: A Systematic Review of Processing and Performance Enhancers.

Odilon Souza Leite-Barbosa1, Debora Cristina da Silva Santos1, Cláudia Carnaval de Oliveira Pinto1

  • 1Postgraduate Program in Materials Science and Engineering, Military Institute of Engineering (IME), Rio de Janeiro 22290-270, RJ, Brazil.

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Summary
This summary is machine-generated.

Renewable bio-based additives are replacing fossil-derived ones in plastics, enhancing safety and sustainability. These advanced materials offer improved performance and integration into circular economy frameworks for next-generation bioplastics.

Keywords:
bio-based additivescircular economyflame retardantsplasticizerssustainable polymers

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Area of Science:

  • Polymer Science and Engineering
  • Materials Chemistry
  • Sustainable Chemistry

Background:

  • The plastics industry faces environmental challenges from persistent, fossil-derived additives.
  • A shift towards renewable alternatives is crucial for environmental safety and sustainability.
  • Bio-based functional additives offer a promising solution for greener plastics.

Purpose of the Study:

  • To review recent advancements in bio-based functional additives for polymers.
  • To assess their integration into circular economy models.
  • To identify emerging trends and challenges in this field.

Main Methods:

  • Systematic literature review following PRISMA guidelines (Scopus database, 2023-2026).
  • Search terms included bio-based plasticizers, flame retardants, antioxidants, and compatibilizers.
  • Screening focused on experimental validation in polymer matrices and data mining for research fronts.

Main Results:

  • 54 studies were selected, revealing a shift towards active, multifunctional macromolecular agents.
  • Targeted molecular interventions (e.g., phosphorylated lignin) improve polymer properties at low loadings.
  • Summaries of synthesis, performance, and end-of-life data for various bio-based additive classes.

Conclusions:

  • Bio-based additives are evolving into sophisticated tools for designing sustainable polymers.
  • Challenges in scalability and high-temperature processing remain.
  • Integration into circular economy strategies provides a path for advanced bioplastics.