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相关概念视频

Polymer Classification: Architecture01:14

Polymer Classification: Architecture

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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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相关实验视频

Updated: Jul 11, 2025

Fabrication of a Bioactive, PCL-based "Self-fitting" Shape Memory Polymer Scaffold
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形状记忆聚合物复合材料:4D打印,智能结构和应用

Shiyu Yan1, Fenghua Zhang1, Lan Luo1

  • 1Centre for Composite Materials and Structures, Harbin Institute of Technology (HIT), No.2 Yikuang Street, Harbin 150000, People's Republic of China.

Research (Washington, D.C.)
|November 9, 2023
PubMed
概括
此摘要是机器生成的。

形状记忆聚合物 (SMP) 和它们的复合材料 (SMPC) 是可以编程改变形状的智能材料. 四维 (4D) 打印将这些材料与3D打印相结合,用于先进的应用,特别是在生物医学领域.

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3D Printing and In Situ Surface Modification via Type I Photoinitiated Reversible Addition-Fragmentation Chain Transfer Polymerization
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4D Printed Bifurcated Stents with Kirigami-Inspired Structures
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相关实验视频

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科学领域:

  • 材料科学 材料科学 材料科学
  • 添加剂制造 添加剂制造 添加剂制造
  • 生物医学工程 生物医学工程

背景情况:

  • 形状记忆聚合物 (SMP) 和它们的复合材料 (SMPC) 在外部刺激下表现出可逆的形状变化.
  • 三维 (3D) 打印可以从数字模型中制造复杂的结构.
  • 四维 (4D) 打印将SMP/SMPC与3D打印集成在一起,以创建动态的,形状变化的对象.

研究的目的:

  • 审查SMP,SMPC和4D打印技术的基本原则.
  • 要突出最近在4D打印的SMP和SMPC的进展,专注于生物医学应用.
  • 讨论4D打印SMP和SMPC的挑战和未来前景.

主要方法:

  • 对形状记忆材料和4D打印现有文献的审查.
  • 对4D打印SMP和SMPC的研究进展进行分析.
  • 综合有关应用程序,挑战和未来方向的信息.

主要成果:

  • 4D打印的SMP和SMPC为创建刺激响应结构提供了独特的能力.
  • 已经观察到显著的研究进展,特别是在生物医学领域.
  • 已经开发出各种专门的4D打印结构.

结论:

  • 小型产品制造商和小型产品制造商的4D打印是一个快速发展的领域,具有巨大的潜力.
  • 生物医学应用是增长和创新的关键领域.
  • 应对当前的挑战将为更广泛的采用和新的发现铺平道路.