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Polymers02:34

Polymers

41.2K
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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Polymers02:34

Polymers

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Synthetic Biology02:55

Synthetic Biology

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Synthetic biology is an interdisciplinary science that involves using principles from disciplines such as engineering, molecular biology, cell biology, and systems biology. It involves remodeling existing organisms from nature or constructing completely new synthetic organisms for applications such as protein or enzyme production, bioremediation, value-added macromolecule production, and the addition of desirable traits to crops, to name a few.
Golden rice
Golden rice is a genetically modified...
5.6K
Recycling Endosomes and Transcytosis00:58

Recycling Endosomes and Transcytosis

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The recycling endosome, also known as the endosomal recycling compartment (ERC), is a part of the slow-recycling process of the endocytic pathway. Molecules internalized through receptor-mediated endocytosis are either degraded in the lysosomes or are recycled to the plasma membrane through the fast- or slow-recycling route.
The recycling endosome is not a single organelle but an extensively tubulated network of recycling pathways. It functions in storing molecules or transporting them across...
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Chemical Formulas02:52

Chemical Formulas

61.6K
A chemical formula presents information about the proportions of atoms constituting a particular chemical compound or molecule, mainly using symbols of elements and numbers. At times other symbols, such as dashes, parentheses, brackets, commas, plus, and minus signs, are also used. A chemical formula can be one of three types – molecular, empirical, and structural.
61.6K
Chemical Equations03:10

Chemical Equations

82.2K
Chemical equations represent the identities and relative quantities of substances involved in a chemical reaction. The substances undergoing reaction are called reactants, and their formulas are placed on the left side of the equation. The substances generated by the reaction are called products, and their formulas are placed on the right side of the equation. Plus signs (+) separate individual reactant and product formulas, and an arrow (→) separates the reactant and product (left and right)...
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Designed for Molecular Recycling: A Lignin-Derived Semi-aromatic Biobased Polymer
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化学的に再利用可能な合成ポリマーシステム

Jian-Bo Zhu1, Eli M Watson1, Jing Tang1

  • 1Department of Chemistry, Colorado State University, Fort Collins, CO 80523-1872, USA.

Science (New York, N.Y.)
|April 28, 2018
PubMed
まとめ

化学的にリサイクル可能なポリマーは 循環経済への解決策です ガンマブチロラクトン (GBL) の新しいポリマーは,室温でポリメリ化され,リサイクルされ,ステレオ複合体を形成します.

科学分野:

  • ポリマー化学
  • 材料科学
  • 持続可能な化学

背景:

  • 化学的にリサイクル可能なポリマーは 循環型経済に不可欠です
  • 既存のリサイクル可能なポリマーは機械的な強度が欠如し,低温のポリメリゼーションを必要とします.
  • ガンマブチロラクトン (GBL) は通常,環境条件下ではポリメリ化できない.

研究 の 目的:

  • 化学的に再利用可能な新しいポリマーシステムを開発する.
  • 機械的特性と加工に関する既存のリサイクル可能なポリマーの限界を克服する.
  • 先進的な材料の応用のための改造された GBL 構造の可能性を調査する.

主な方法:

  • トランスリング融合による新しいガンマブチロラクトン (GBL) デリバティブの合成.
  • 調節されたGBLの室温,溶媒なしのポリメリゼーション
  • ポリマーの分子量,熱安定性,および機械的性質の特徴.
  • 熱溶解と化学溶解による量的な化学リサイクルの実証
  • 高分子ステレオ複合体の形成は,ポリマーエナンティオマーを混合することによって行われる.

主要な成果:

  • 高分子量ポリマーは,改造されたGBLモノマーから室温で合成された.

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Depolymerizable Olefinic Polymers Based on Fused-Ring Cyclooctene Monomers
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MALDI-ToF MS Method for the Characterization of Synthetic Polymers with Varying Dispersity and End Groups
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  • 合成されたポリマーは熱安定性を高めています.
  • ポリマーは,熱分解または化学分解によって単体に戻すことができる.
  • エナントオメアを混合すると,高結晶性の超分子ステレオ複合体が形成される.

    • 結論:

    • 開発されたポリマーシステムは,化学的にリサイクル可能な高性能材料への実行可能な経路を示しています.
    • この新しいトランスリング融合アプローチは,以前にポリメリ化できないモノメアの容易なポリメリゼーションを可能にします.
    • ステレオコンプレクスを形成する能力は,調整可能な特性を備えた高度な材料設計の道を開きます.