相关实验视频

Updated: Jul 5, 2025

Molecular Entanglement and Electrospinnability of Biopolymers

Molecular Entanglement and Electrospinnability of Biopolymers

Published on: September 3, 2014

研究聚合物溶液纠和电PCL纤维力学之间的关系

Manasa Rajeev¹, Christine C Helms¹

¹Department of Physics, University of Richmond, Richmond, VA 23173, USA.

|January 17, 2024

概括

聚合物纠显著影响通过电制造产生的聚烯酸 (PCL) 纤维的机械性能,特别是在更高的应变时. 增加的纠增强了纤维的伸展性和强度,这对于先进的材料应用至关重要.

科学领域:

材料科学材料科学材料科学
聚合物科学聚合物科学
纳米技术纳米技术

背景情况:

电纤维具有可调整的形态和机制,适用于各种应用.
聚合物溶液纠是影响电材料性质的关键因素.

研究的目的:

为了研究聚合物纠对单个聚烯酸 (PCL) 纤维的机械性能的影响.
为了将聚合物纠数 (n) 与纤维形态和力学相关联.

主要方法:

准备了不同度的聚烯酸 (PCL) 溶液在酸/酸中.
每种聚合物 (n) 纠的数量是根据聚合物体积分数计算的.
用横向力原子力显微镜 (AFM) 评估了纤维形态和机械性能.

主要成果:

在n值在3.8和4.9之间实现了平滑PCL纤维的一致电.
最初的纤维模量独立于聚合物纠.
纤维延伸度随着纠度的增加增加增加了35% (n=3.8至4.9).
纤维强度增加了一倍以上,并且在更高的纠水平上可扩展性增加.
所有PCL纤维都表现出应变硬化行为.

结论:

聚合物纠在确定电PCL纤维的机械性质方面发挥着重要作用,特别是在大压力下.
增加的聚合物纠导致电纤维的延展性和强度提高.
这些发现对于优化电纤维设计以满足特定机械性能要求至关重要.

关键词:

电力旋转是指电力旋转.纠纠的纠是一个问题.侧向的AFM是侧向的聚卡普罗拉克托尼是一种多重的产物.强度强度强度强度强度强度强度强度强度强度强度强度强

更多相关视频

Electrospinning Fundamentals: Optimizing Solution and Apparatus Parameters

Electrospinning Fundamentals: Optimizing Solution and Apparatus Parameters

Published on: January 21, 2011

Electrospun Nanofiber Scaffolds with Gradations in Fiber Organization

Electrospun Nanofiber Scaffolds with Gradations in Fiber Organization

Published on: April 19, 2015

相关概念视频

Polymer Classification: Architecture

Polymer Classification: Architecture

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...

Polymers: Molecular Weight Distribution

Polymers: Molecular Weight Distribution

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.