可自修复、再加工、抗菌硅橡胶的制备及性能研究

祖兆基; 曹雨扬; 刘静雯; 林子谦; 张蓝月; 向洪平; 章明秋

doi:10.11777/j.issn1000-3304.2024.24212

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可自修复、再加工、抗菌硅橡胶的制备及性能研究

研究论文 | 更新时间：2025-01-26

- 可自修复、再加工、抗菌硅橡胶的制备及性能研究
- Self-healing, Reprocessable, and Antibacterial Silicone Rubber Enabled by Ionic Crosslinking Bonds
- 高分子学报 2025年56卷第1期页码：152-165
- 作者机构：
  
  1.广东工业大学材料与能源学院广东省功能软凝聚态物质重点实验室广州 510006
  2.广东工业大学生物医药学院广州 510006
  3.中山大学化学学院广东省高性能树脂基复合材料重点实验室聚合物复合材料及功能材料教育部重点实验室广州 510275
- 作者简介：
  
  E-mail: xianghongping@gdut.edu.cn
- 基金信息：
  
  国家自然科学基金(基金号 ┣52033011);52273104┫;广东省基础与应用基础研究基金(基金号 2022A1515011972)
- DOI：10.11777/j.issn1000-3304.2024.24212
  中图分类号：
- CSTR：32057.14.GFZXB.2024.7298
- 纸质出版日期：2025-01-20，
  
  网络出版日期：2024-12-02，
  
  收稿日期：2024-08-08，
  
  录用日期：2024-09-24
- 稿件说明：
移动端阅览
祖兆基, 曹雨扬, 刘静雯, 林子谦, 张蓝月, 向洪平, 章明秋 . 可自修复、再加工、抗菌硅橡胶的制备及性能研究. 高分子学报, 2025, 56(1), 152-165

Zu, Z. J.; Cao, Y. Y.; Liu, J. W.; Lin, Z. Q.; Zhang, L. Y.; Xiang, H. P.; Zhang, M. Q .Self-healing, reprocessable, and antibacterial silicone rubber enabled by ionic crosslinking bonds. Acta Polymerica Sinica, 2025, 56(1), 152-165
祖兆基, 曹雨扬, 刘静雯, 林子谦, 张蓝月, 向洪平, 章明秋 . 可自修复、再加工、抗菌硅橡胶的制备及性能研究. 高分子学报, 2025, 56(1), 152-165 DOI： 10.11777/j.issn1000-3304.2024.24212. CSTR： 32057.14.GFZXB.2024.7298.

Zu, Z. J.; Cao, Y. Y.; Liu, J. W.; Lin, Z. Q.; Zhang, L. Y.; Xiang, H. P.; Zhang, M. Q .Self-healing, reprocessable, and antibacterial silicone rubber enabled by ionic crosslinking bonds. Acta Polymerica Sinica, 2025, 56(1), 152-165 DOI： 10.11777/j.issn1000-3304.2024.24212. CSTR： 32057.14.GFZXB.2024.7298.

摘要

以

-二乙烯三胺丙基改性聚硅氧烷(PMAS)为基材、柠檬酸(CA)作为交联剂，制备了可自修复、再加工和抗菌的动态交联硅橡胶(PMAS-CA)，并将其与碳纳米管(CNTs)复合而成硅橡胶复合材料，研究其力学性能、自修复等性能的调控机制. 结果表明：PMAS经CA交联后可形成离子交联键，所构建的交联网络随温度升高而逐步解离，降温后离子交联键可重新形成. 随CA用量的增加，硅橡胶的拉伸强度增大，断裂伸长率降低；当PMAS与CA之间的氨基与羧基的比值为1时，硅橡胶的力学能较好，拉伸强度为1.2 MPa，伸长率为150%. 所制备硅橡胶发生断裂破坏后，在80 ℃下修复 2 h后可恢复90%的力学性能. 所制备的硅橡胶对大肠杆菌和金黄色葡萄球菌具有良好抗菌效果，同时还具有良好的细胞相容性. 此外，PMAS-CA与CNTs复合后力学性能提高了2~3倍，所制备CNTs/PMAS-CA复合材料具有良好的自修复能力，在80 ℃下修复4 h，修复效率高于80%. 该简便工艺所制备的自修复、可再加工、抗菌动态交联硅橡胶及其复合材料有望用于柔性传感等领域.

Abstract

In this study

-diethylenetriaminepropyl-modified polysiloxane (PMAS) and citric acid (CA) are used as the matrix and crosslinking agent to prepare silicone rubber (PMAS-CA) with self-healing

reprocessable

and antibacterial properties. Furthermore

the silicone rubber is compounded with carbon nanotubes (CNTs) to form silicone rubber composites

and their mechanical properties and self-healing capabilities are investigated. The results indicates that PMAS crosslinked with CA can form ionic crossli

nking bonds

which progressively dissociate with increasing temperature and reassociate upon cooling. With increasing amounts of CA

the tensile strength of the silicone rubber is increased

while the elongation at break is decreased. The silicone rubber prepared from PMAS with an amine value of about 3 mmol/g and an amine-to-carboxyl ratio of 1 exhibits optimal comprehensive properties

with a tensile strength of 1.2 MPa and an elongation of 150%. After being damaged and subsequently repaired at 80 ℃ for 2 h

the silicone rubber can recover 90% of its mechanical performance. The prepared silicone rubber also reveals good antibacterial effects against

Escherichia coli

and

Staphylococcus aureus

and has good biocompatibility. Furthermore

the mechanical properties of the PMAS-CA composites are improved by 2 to 3 times after compounding with CNTs

and the CNTs/PMAS-CA composites exhibit excellent self-healing capabilities

with a repair efficiency of over 80% after 4 h at 80 ℃. Therefore

this dynamically crosslinked silicone rubber and composites prepared through the simple process

showing excellent self-healing

reprocessing

and antibacterial properties

have the potential applications in flexible sensors and other fields.

关键词

硅橡胶自修复离子键抗菌性能柔性电子器件

Keywords

Silicone rubberSelf-healingIonic bondsAntibacterial activityFlexible electronic device

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