Strain Field Self-Diagnostic Poly(dimethylsiloxane) Elastomers

被引：28

作者：

Friih, Andreas E. ^{[1
,2
]}

Artoni, Federico ^{[3
]}

Brighenti, Roberto ^{[3
]}

Dalcanale, Enrico ^{[1
,2
]}

机构：

[1] Univ Parma, Dept Chem Life Sci & Environm Sustainabil, Parco Area Sci 17-A, I-43124 Parma, Italy

[2] INSTM UdR Parma, Parco Area Sci 17-A, I-43124 Parma, Italy

[3] Univ Parma, Dept Engn & Architecture, Parco Area Sci 181-A, I-43124 Parma, Italy

来源：

CHEMISTRY OF MATERIALS | 2017年 / 29卷 / 17期

关键词：

COVALENT BONDS; POLYMERS; FORCE; ACTIVATION; GROWTH; IMAGE;

D O I：

10.1021/acs.chemmater.7b02438

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Advanced applications, involving high risk mechanical systems, require the in-service deformation level to be verified in order to assess their safety and reliability, providing information for repairing or replacing interventions In the present work, a self-diagnostic poly(dimethylsiloxane) (PDMS) elastomer containing a supramolecular detection probe is proposed, enabling the strain intensity in the polymeric matrix to be identified by fluorescence detection. Turn-on fluorescence represents an efficient, sensitive, simple, and real time diagnostic tool to quantitatively detect high-strain regions for the mechanical monitoring of structural elements. The supramolecular complex cross-linking the polymer's chains provides fluorescence response induced by strain even if present in a very low amount (10(-6) mol kg(-1)), completely preserving the mechanical characteristics of the matrix. The developed PDMS material is mechanically tested, and the observed fluorescence field is correlated with that obtained by theoretical and numerical simulations as well as by contactless measurements performed via the digital image correlation (DIC) technique.

引用

页码：7450 / 7457

页数：8

共 43 条

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[2]

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