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Polymer Classification: Crystallinity

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Unlike ionic or small covalent molecules, polymers do not form crystalline solids due to the diffusion limitations of their long-chain structures. However, polymers contain microscopic crystalline domains separated by amorphous domains.
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Copolymers are the products obtained from the polymerization of multiple monomer species. So, in a polymer chain itself, there can be multiple repeating units that come from different monomers. The process of synthesizing a polymer from different monomer species is called copolymerization. When two monomers are involved, the polymer is known as a bipolymer. Polymers with three and four monomers are termed terpolymers and quaterpolymers, respectively. Figure 1 depicts the copolymerization of...
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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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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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Step-Growth Polymerization: Overview01:03

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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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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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Liquid Crystalline Block Copolymers for Advanced Applications: A Review.

Maryam Safari1, Jules A W Harings1

  • 1Aachen Maastricht Institute for Biobased Materials (AMIBM), Faculty of Science and Engineering, Maastricht University, Urmonderbaan 22, 6167RD Geleen, The Netherlands.

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Summary
This summary is machine-generated.

Liquid crystalline block copolymers (LCBCPs) offer tunable, multi-tiered architectures for advanced applications. Molecular design precisely controls properties, driving innovation in functional materials and technologies.

Keywords:
hierarchical structureliquid crystalline block copolymers

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Nanotechnology

Background:

  • Liquid crystalline block copolymers (LCBCPs) integrate self-assembly and liquid crystallinity.
  • They create complex, multi-tiered architectures with programmable functionalities.

Purpose of the Study:

  • To review recent advances in LCBCP structure-property relationships.
  • To highlight diverse applications and the role of molecular design.

Main Methods:

  • Literature review of recent research on LCBCPs.
  • Analysis of structure-property correlations and application-driven design.

Main Results:

  • Molecular design allows precise tuning of structural, optical, mechanical, and stimuli-responsive properties.
  • LCBCPs show promise in nanotechnology, biomedical systems, photonics, energy storage, and soft robotics.

Conclusions:

  • LCBCPs are versatile materials for next-generation technologies.
  • Challenges in scalability, phase control, and characterization need addressing for broader adoption.