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相关概念视频

Step-Growth Polymerization: Overview01:03

Step-Growth Polymerization: Overview

4.3K
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...
4.3K
Olefin Metathesis Polymerization: Overview01:13

Olefin Metathesis Polymerization: Overview

2.5K
Recently, the development of olefin metathesis polymerization advanced the field of polymer synthesis. Simply put, the reorganization of substituents on their double bonds between two olefins in the presence of a catalyst is known as the olefin metathesis reaction. The use of metathesis reaction for polymer synthesis is called olefin metathesis polymerization.
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists of a...
2.5K
Ziegler–Natta Chain-Growth Polymerization: Overview01:17

Ziegler–Natta Chain-Growth Polymerization: Overview

3.9K
Ziegler–Natta polymerization is another form of addition or chain‐growth polymerization used for synthesizing linear polymers over branched polymers. The catalyst used for polymerization is the Ziegler–Natta catalyst, named after Karl Ziegler and Giulio Natta, who developed it in 1953. This catalyst is an organometallic complex of titanium tetrachloride and triethyl aluminum, with the active form of the catalyst being an alkyl titanium compound. Using the Ziegler–Natta...
3.9K
Polymer Classification: Architecture01:14

Polymer Classification: Architecture

3.7K
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...
3.7K
Radical Chain-Growth Polymerization: Overview01:10

Radical Chain-Growth Polymerization: Overview

3.2K
Chain-growth or addition polymerization is successive addition reactions of monomers with a polymer chain. In radical chain-growth polymerization, the reaction proceeds via a free-radical intermediate. The free radical is formed from radical initiators, which spontaneously generate free radicals by homolytic fission. Organic peroxides (such as dibenzoyl peroxide, as shown in Figure 1) or azo compounds are popular radical initiators. A low concentration ratio of radical initiator to monomer is...
3.2K
Polymers: Molecular Weight Distribution01:10

Polymers: Molecular Weight Distribution

4.7K
For any given polymer, the weight average molecular weight (Mw) is higher than, if not equal to, the number average molecular weight (Mn). The only situation in which the weight average molecular weight and the number average molecular weight are equal is when a polymer consists only of chains with equal molecular weight. However, this never happens in a synthetic polymer, since it is difficult to control the polymerization process up to a molecular level with accuracy to a hundred percent.
4.7K

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相关实验视频

Updated: Jan 17, 2026

Polymer Microarrays for High Throughput Discovery of Biomaterials
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Polymer Microarrays for High Throughput Discovery of Biomaterials

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通过聚合物科学研讨会,将数据驱动材料信息学引入本科课程.

Mona Amrihesari1, Blair Brettmann1,2

  • 1School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States.

Journal of chemical education
|September 15, 2025
PubMed
概括

本研究介绍了机器学习 (ML) 概念,通过实践研讨会向本科聚合物科学学生介绍. 研讨会提高了学生在材料科学研究中应用ML技术的理解和信心.

关键词:
在这里,Python是Python.机器学习是机器学习.材料信息学 材料信息学聚合物科学 聚合物科学工作室 工作室 工作室 工作室

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Interactive Molecular Model Assembly with 3D Printing
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Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level
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相关实验视频

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Interactive Molecular Model Assembly with 3D Printing
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科学领域:

  • 材料科学 材料科学 材料科学
  • 聚合物工程 聚合物工程
  • 计算科学 计算科学

背景情况:

  • 人工智能 (AI) 和机器学习 (ML) 在科学研究中越来越重要,包括材料发现和数据分析.
  • 将AI/ML工具集成到研究中需要基本的理解,这可以通过本科教育来培养.

研究的目的:

  • 为本科生介绍基本的机器学习概念.
  • 通过早期教育,加强在科学研究中采用AI/ML方法.
  • 通过实践研讨会将ML整合到聚合物科学和工程课程中.

主要方法:

  • 一个实践性的,以应用为重点的研讨会被开发出来,并交付给一个聚合物科学和工程课程的本科生.
  • 学生参与完整的机器学习工作流程:数据清理,模型培训,性能评估和结果解释.
  • 通过视觉检查生成的聚合物可溶性数据集被用于实际应用.

主要成果:

  • 研讨会前后的调查表明,学生对机器学习概念的理解有了可衡量的改善.
  • 学生对将机器学习技术应用于材料科学问题的信心显著增加.
  • 研讨会成功地将新的计算概念整合到现有的材料科学课程中.

结论:

  • 在本科教育中对机器学习的基础接触可以增强其在科学研究中的采用.
  • 实践研讨会是一种有效的方法,可以向聚合物科学学生教授机器学习工作流程.
  • 将机器学习整合到材料科学课程中,将基本概念与实际研究应用联系起来.