Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Superplasticizers01:30

Superplasticizers

116
Superplasticizers are advanced admixtures that enhance the workability of concrete by lowering the water content without compromising the strength of the material. These substances are highly effective water reducers, improving concrete flow, making it easier to work with, and enabling concrete to reach inaccessible areas or densely reinforced sections without mechanical vibration. The key components in superplasticizers are either sulfonated melamine or naphthalene formaldehyde condensates,...
116
Plasticizers01:31

Plasticizers

114
Water-reducers, or plasticizers, are chemical admixtures used in concrete to improve strength and workability. These additives reduce the water-cement ratio without compromising workability, lower the cement content while maintaining the same workability, or increase workability to assist concrete placement in inaccessible areas.
Plasticizers function by using surface-active agents to create repulsive electrostatic forces between cement particles. This dispersion enhances the concrete's...
114
Additives and Fillers in Concrete01:29

Additives and Fillers in Concrete

127
Additives and fillers are integral to enhancing the properties of concrete. Pozzolans and blast-furnace slag are additives or admixtures due to their reactions with calcium hydroxide released during cement hydration. Fillers, which are finely ground and similar in fineness to Portland cement, improve concrete attributes such as workability density, and reduce capillary bleeding or cracking. Some fillers possess hydraulic properties or participate in benign reactions within the cement paste.
The...
127
Waterproofing and Anti-Bacterial Admixtures in Concrete01:22

Waterproofing and Anti-Bacterial Admixtures in Concrete

111
Concrete's susceptibility to water absorption is due to the capillary action within the pores of its hydrated cement paste. This action draws water in, creating the need for waterproofing admixtures to prevent such penetration. The efficacy of these admixtures is contingent upon the water pressure, with variations arising from different conditions such as rain, capillary rise, or hydrostatic pressure in structures intended to hold water.
Waterproofing admixtures render concrete hydrophobic,...
111

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Bio-Based Viscoelastic Polyurethane Foams: Functional Behavior Across Application Temperatures.

Polymers·2026
Same author

PLA/PCL Polymer Material for Food Packaging with Enhanced Antibacterial Properties.

Polymers·2025
Same author

Novel Biocomposite of Starch and Flax Fiber Modified with Tannic Acid with Biocidal Properties.

Polymers·2024
Same author

Modification of Polycaprolactone with Plant Extracts to Improve the Aging Resistance.

Materials (Basel, Switzerland)·2023
Same author

The structure and selected properties of poly(ε-caprolactone)-based biodegradable composites with high calcium carbonate concentration.

The Science of the total environment·2023
Same author

Value, time and outcomes of elevated lactate levels in adult patients on extracorporeal membrane oxygenation.

Perfusion·2022

相关实验视频

Updated: Sep 10, 2025

Twin-Screw Extrusion Process to Produce Renewable Fiberboards
07:21

Twin-Screw Extrusion Process to Produce Renewable Fiberboards

Published on: January 27, 2021

6.5K

作为增强平电PLA/BT复合材料生物降解的双功能的添加剂

Natalia Puszczykowska1, Piotr Rytlewski1, Agnieszka Mirkowska2

  • 1Faculty of Materials Engineering, Kazimierz Wielki University, Chodkiewicza 30, 85-064 Bydgoszcz, Poland.

Materials (Basel, Switzerland)
|August 28, 2025
PubMed
概括
此摘要是机器生成的。

黄素 (RF) 增强了聚乳酸/酸 (PLA/BT) 压电复合材料的生物降解. 这种修改促进了微生物生长和受控的吸收,而不会损害机电性能.

关键词:
巴蒂奥3美国生物降解压电生物材料压电复合材料里波弗拉

更多相关视频

Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites
06:34

Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites

Published on: September 19, 2020

5.9K
Roughness Impact of Piezoelectric Dental Scaler on Two Distinct Flowable Composite Filling Materials
05:30

Roughness Impact of Piezoelectric Dental Scaler on Two Distinct Flowable Composite Filling Materials

Published on: January 10, 2025

746

相关实验视频

Last Updated: Sep 10, 2025

Twin-Screw Extrusion Process to Produce Renewable Fiberboards
07:21

Twin-Screw Extrusion Process to Produce Renewable Fiberboards

Published on: January 27, 2021

6.5K
Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites
06:34

Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites

Published on: September 19, 2020

5.9K
Roughness Impact of Piezoelectric Dental Scaler on Two Distinct Flowable Composite Filling Materials
05:30

Roughness Impact of Piezoelectric Dental Scaler on Two Distinct Flowable Composite Filling Materials

Published on: January 10, 2025

746

科学领域:

  • 生物材料科学
  • 材料工程
  • 生物医学工程

背景情况:

  • 聚乳酸/酸复合物 (PLA/BT) 具有适用于骨组织工程的压电性质.
  • 由于PLA/BT的生物降解性有限,阻碍了生物医学植入物的再吸收.

研究的目的:

  • 作为增强PLA/BT复合材料生物降解的双重功能的添加剂,研究黄素 (RF).
  • 评估RF对生物医学应用中的PLA/BT复合材料的电机性能和再吸收的影响.

主要方法:

  • 聚乙烯/乙烯复合物被修改为里波弗拉 (RF).
  • 描述包括热重量测量分析 (TG),差分扫描热量测量 (DSC),拉力测试,动态机械分析 (DMA),介电性和压电系数 (d33) 测量.
  • 通过质量损失和扫描电子显微镜 (SEM) 来评估微生物殖民和表面变化.

主要成果:

  • 与未经修改的PLA/BT相比,RF添加显著增加了微生物殖民和质量损失 (在28天内高达16%).
  • PLA/BT/RF复合材料保持了功能压电性 (d33 ≈ 3.9 pC/N).
  • SEM证实了RF修改样本在生物降解后的强化微生物活动和表面恶化.

结论:

  • 黄素有效地提高了PLA/BT压电复合材料的生物降解.
  • 可以在不损害基本电机性能的情况下实现受控的再吸收.
  • 这些发现支持使用RF修饰的基于PLA的压电复合材料用于可吸收的生物医学植入物.