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Related Concept Videos

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.
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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.
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Anionic Chain-Growth Polymerization: Overview01:20

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The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
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Polymer Classification: Architecture01:14

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Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like structure with minimal to no branching at all. Even if a polymer features large substituent groups on the monomer, which appear as branches to the skeleton, it is not considered a branched polymer. A branched polymer contains secondary polymer chains that arise from the main polymer chain. The branching occurs when the polymer growth shifts from...
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Molecular Weight of Step-Growth Polymers01:08

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Step growth polymerization involves bi or multifunctional monomers. Bifunctional monomers react to form linear step growth polymers, whereas multifunctional monomers react to form non-linear or branched polymers.
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Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)00:53

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Acyclic diene metathesis polymerization or ADMET polymerization involves cross-metathesis of terminal dienes, such as 1,8-nonadiene, to give linear unsaturated polymer and ethylene. As ADMET is a reversible process, the formed ethylene gas must be removed from the reaction mixture to complete the polymerization process.
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[Progress in bio-based polyamides].

Zhengqiang Huang1, Zhe Cui1, Heming Zhang1

  • 1School of Material Science and Engineering, Zhengzhou University, Zhengzhou 450001, Henan, China.

Sheng Wu Gong Cheng Xue Bao = Chinese Journal of Biotechnology
|October 12, 2017
PubMed
Summary
This summary is machine-generated.

This study explores eco-friendly bio-based polyamides derived from renewable resources. It details precursor origins, manufacturing routes for bio-based PA11 and PA1010, and their market development.

Keywords:
bio-basedpolyamidespropertiesrenewable resourcessynthesis route

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Area of Science:

  • Polymer Science
  • Materials Science
  • Green Chemistry

Background:

  • Bio-based polyamides offer sustainable alternatives to conventional petroleum-based polymers.
  • Their precursors are derived from renewable resources like castor oil, glucose, and animal oils.
  • Key precursors include bio-based amino acids, lactams, diprotic acids, and diamines.

Purpose of the Study:

  • To investigate the synthesis routes of bio-based polyamide precursors from biomass.
  • To analyze the properties and modifications of prominent bio-based polyamides, specifically PA11 and PA1010.
  • To provide a comprehensive overview of the variety, classification, commercial production, and developmental status of bio-based polyamides, with a focus on China.

Main Methods:

  • Literature review and analysis of existing research on bio-based polyamides.
  • Detailed examination of precursor sourcing and manufacturing pathways.
  • Comparative analysis of properties and modification strategies for PA11 and PA1010.

Main Results:

  • Established the link between bio-based materials and the production of essential polyamide precursors.
  • Detailed the specific origin materials and manufacturing processes for bio-based PA11 and PA1010.
  • Highlighted the diverse range, classification, and commercialization trends of bio-based polyamides, including their progress in China.

Conclusions:

  • Bio-based polyamides represent a significant advancement in sustainable polymer technology.
  • The study provides valuable insights into the production, properties, and market landscape of these eco-friendly materials.
  • Further development and commercialization, particularly in regions like China, are crucial for widespread adoption.