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The role of water transport in the failure of silicone rubber coating for implantable electronic devices
Du, Shiyao1,2; Zhang, Yang1,2; Meng, Meijiang1; Tang, Ao1; Li, Ying1,3
Corresponding AuthorTang, Ao(a.tang@imr.ac.cn) ; Li, Ying(liying@imr.ac.cn)
2021-10-01
Source PublicationPROGRESS IN ORGANIC COATINGS
ISSN0300-9440
Volume159Pages:10
AbstractImplantable 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.
KeywordOrganic coatings Failure mechanism Implantable electronic devices Water transfer EIS Finite element analysis
Funding OrganizationNational Natural Science Foundation of China
DOI10.1016/j.porgcoat.2021.106419
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51871227]
WOS Research AreaChemistry ; Materials Science
WOS SubjectChemistry, Applied ; Materials Science, Coatings & Films
WOS IDWOS:000696955000004
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/167040
Collection中国科学院金属研究所
Corresponding AuthorTang, Ao; Li, Ying
Affiliation1.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
Recommended Citation
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.
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