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Polymers02:34

Polymers

36.0K
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

Types of Step-Growth Polymers: Polyesters

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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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Step-Growth Polymerization: Overview01:03

Step-Growth Polymerization: Overview

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Step-growth or condensation polymerization is a stepwise reaction of bi or multifunctional monomers to form long-chain polymers. As all the monomers are reactive, most of the monomers are consumed at the early stages of the reaction to form small chains of reactive oligomers, which then combine to form long polymer chains in the late stages. Hence, the reaction has to proceed for a long time to achieve high molecular weight polymers.
Many natural and synthetic polymers are produced by...
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Hydrolysis01:15

Hydrolysis

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Overview
Hydrolysis is a chemical reaction in which the addition of water breaks down a polymer into its simpler monomer units. For example, peptides break into amino acids, carbohydrates into simple sugars, and DNA into nucleotides. Enzymes often facilitate these processes.
Hydrolysis Reverses Dehydration Synthesis
Complex carbohydrates can be broken down by breaking the bonds between individual sugar units. The reaction breaks a glycosidic bond as water is added to the compound. The...
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Fabricating Superhydrophobic Polymeric Materials for Biomedical Applications
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Biopolymers for Hygroscopic Material Development.

Qing Li1, Fei Wang1, Yaoxin Zhang2

  • 1Key Laboratory of Bio-based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin, 150040, P. R. China.

Advanced Materials (Deerfield Beach, Fla.)
|January 18, 2023
PubMed
Summary
This summary is machine-generated.

Biopolymers from diverse organisms offer sustainable building blocks for advanced hygroscopic materials. These materials show promise for atmospheric water harvesting, dehumidification, and power generation, offering significant value.

Keywords:
atmospheric water harvestingbiopolymersdehumidificationhygroscopic materialspower generation

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Area of Science:

  • Materials Science
  • Biotechnology
  • Environmental Science

Background:

  • Effective atmospheric water management is crucial for human welfare.
  • Biopolymers derived from organisms offer sustainable and diverse building blocks for hygroscopic materials.

Purpose of the Study:

  • To provide a comprehensive review of recent advancements in biopolymer-based hygroscopic materials.
  • To highlight the fabrication methods and applications of these materials.

Main Methods:

  • Review of literature on biopolymer sources and extraction processes.
  • Analysis of fabrication techniques for biopolymer-derived composites and gels.
  • Systematic presentation of applications in dehumidification, water harvesting, and power generation.

Main Results:

  • Biopolymers can be effectively utilized as substrates and building blocks for advanced hygroscopic composites and gels.
  • Biopolymer-derived materials demonstrate significant potential in atmospheric water harvesting and dehumidification.
  • Applications extend to energy generation through moisture-driven processes.

Conclusions:

  • Biopolymer-derived hygroscopic materials represent a promising avenue for sustainable atmospheric water management.
  • Further research is needed to address challenges and optimize performance for widespread application.