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

doi:10.1016/j.porgcoat.2021.106419

CORC > 金属研究所 > 中国科学院金属研究所

	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
刊名	PROGRESS IN ORGANIC COATINGS
	2021-10-01
卷号	159 页码:10
关键词	Organic coatings Failure mechanism Implantable electronic devices Water transfer EIS Finite element analysis
ISSN号	0300-9440
DOI	10.1016/j.porgcoat.2021.106419
通讯作者	Tang, Ao(a.tang@imr.ac.cn) ; Li, Ying(liying@imr.ac.cn)
英文摘要	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.
资助项目	National Natural Science Foundation of China[51871227]
WOS研究方向	Chemistry ; Materials Science
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000696955000004
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/167039]
专题	金属研究所_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.