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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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Carbohydrates are an essential part of the diet in humans and animals. Grains, fruits, and vegetables are natural sources of carbohydrates that provide energy to the body, particularly through glucose, a simple sugar that is a component of starch and an ingredient in many staple foods. The stoichiometric formula (CH2O)n, where n is the number of carbons in the molecule represents carbohydrates. In other words, the ratio of carbon to hydrogen to oxygen is 1:2:1 in carbohydrate molecules. This...
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Polysaccharides such as glycogen and starch are synthesized from nucleoside diphosphate sugars, primarily uridine diphosphate glucose (UDPG) and adenosine diphosphate glucose (ADPG). These activated glucose donors act as key intermediates in carbohydrate metabolism and biosynthesis. UDPG primarily involves glycogen synthesis in animals and many bacteria, while ADPG plays a fundamental role in starch synthesis in plants and certain bacteria.UDPG is formed when glucose-1-phosphate reacts with...
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Polymerization generates chiral centers along the entire backbone of a polymer chain. Accordingly, the stereochemistry of the substituent group has a significant effect on polymer properties. Polymers formed from monosubstituted alkene monomers feature chiral carbons at every alternate position in the polymer backbone. Relative to the predominant orientation of substituents at the adjacent chiral carbons, the polymer can exist in three different configurations: isotactic, syndiotactic, and...
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Amide-linked N-methacryloyl sucrose containing polymers.

Krasimira T Petrova1, Taterao M Potewar1, Osvaldo S Ascenso1

  • 1REQUIMTE, CQFB, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Quinta da Torre, 2829-516 Caparica, Portugal.

Carbohydrate Polymers
|June 8, 2014
PubMed
Summary

Researchers synthesized novel sucrose-based monomers and polymerized them. Varying monomer structures significantly impacted the resulting polymer’s thermal and rheological properties, offering new material design possibilities.

Keywords:
Amide-linkageFree radical copolymerizationN-methacryloyl monomersPoly(vinylsacharides)Sucrose-containing monomers

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Area of Science:

  • Polymer Chemistry
  • Carbohydrate Chemistry
  • Materials Science

Background:

  • Sucrose derivatives offer unique properties for polymer development.
  • Functionalizing sucrose enables tailored polymer architectures.
  • Amide linkages provide stable attachment to polymer backbones.

Purpose of the Study:

  • To synthesize novel sucrose-containing monomers for polymerization.
  • To investigate the free radical homo- and co-polymerization of these monomers with styrene.
  • To analyze the impact of monomer structure on polymer properties.

Main Methods:

  • Synthesis of three regioisomerically pure N-methacryloylamide sucrose monomers.
  • Free radical polymerization (homo- and co-polymerization with styrene).
  • Characterization using NMR, MALDI-TOF, DSC, AFM, and equilibrium water content (EWC).

Main Results:

  • Successful synthesis of novel sucrose-based monomers.
  • Formation of polymers with pendant sucrose moieties via amide linkages.
  • Demonstrated significant influence of monomer structural variations on thermal and rheological polymer properties.

Conclusions:

  • Novel sucrose-containing monomers can be efficiently synthesized and polymerized.
  • Polymer properties are tunable by modifying sucrose monomer structure.
  • These materials hold potential for applications requiring specific thermal and rheological characteristics.