The role of water transport in the failure of silicone rubber coating for implantable electronic devices

doi:10.1016/j.porgcoat.2021.106419

IMR OpenIR

	The role of water transport in the failure of silicone rubber coating for implantable electronic devices
	Du, Shiyao 1,2; Zhang, Yang 1,2; Meng, Meijiang 1; Tang, Ao 1; Li, Ying 1,3
通讯作者	Tang, Ao(a.tang@imr.ac.cn) ; Li, Ying(liying@imr.ac.cn)
	2021-10-01
发表期刊	PROGRESS IN ORGANIC COATINGS
ISSN	0300-9440
卷号	159 页码:10
摘要	Implantable electronic devices (IEDs) are increasingly used in medical treatment and diagnose for physiological monitoring. However, encapsulation of IEDs still faces significant challenges as full prevention of body fluid penetration into the coating remains unsolved. To enable an extended lifecycle for IEDs, the impact of water transport on the failure mechanism of silicone rubber coating was systematically investigated in this study. Water absorption and morphology characterization firstly illustrate the water diffusion model and demonstrate the presence of cracks inside the silicone rubber coating, respectively. Subsequent electrochemical characterizations further verify a three-step water penetration behavior in the coating/substrate system, and meanwhile quantify the crack growth and evolution. By further experimental and finite element studies, it is proved that crack propagation is responsible for coating failure in IEDs, while a comprehensive failure mechanism of medical silicone rubber coating in simulated body fluid is also uncovered in a detailed manner for the first time. Such a clear elucidation of failure mechanism for silicone rubber coating is greatly beneficial for future packaging material design for IEDs.
关键词	Organic coatings Failure mechanism Implantable electronic devices Water transfer EIS Finite element analysis
资助者	National Natural Science Foundation of China
DOI	10.1016/j.porgcoat.2021.106419
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51871227]
WOS研究方向	Chemistry ; Materials Science
WOS类目	Chemistry, Applied ; Materials Science, Coatings & Films
WOS记录号	WOS:000696955000004
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：12[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/167040
专题	中国科学院金属研究所
通讯作者	Tang, Ao; Li, Ying
作者单位	1.Chinese Acad Sci, Corros Ctr, Inst Met Res, Wencui Rd 62, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Technol, Wenhua Rd 72, Shenyang 110016, Peoples R China 3.Northeastern Univ, Shenyang Natl Lab Mat Sci, 3-11 Wenhua Rd, Shenyang 110819, Peoples R China
推荐引用方式 GB/T 7714	Du, Shiyao,Zhang, Yang,Meng, Meijiang,et al. The role of water transport in the failure of silicone rubber coating for implantable electronic devices[J]. PROGRESS IN ORGANIC COATINGS,2021,159:10.
APA	Du, Shiyao,Zhang, Yang,Meng, Meijiang,Tang, Ao,&Li, Ying.(2021).The role of water transport in the failure of silicone rubber coating for implantable electronic devices.PROGRESS IN ORGANIC COATINGS,159,10.
MLA	Du, Shiyao,et al."The role of water transport in the failure of silicone rubber coating for implantable electronic devices".PROGRESS IN ORGANIC COATINGS 159(2021):10.