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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.7b03178
|2 doi
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|a pubmed25n0931.xml
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|a (DE-627)NLM279612257
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|a (NLM)29298073
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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1 |
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|a Tran, Ngon T
|e verfasserin
|4 aut
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|a Polydopamine and Polydopamine-Silane Hybrid Surface Treatments in Structural Adhesive Applications
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|c 2018
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 17.09.2018
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|a Date Revised 03.01.2025
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Numerous studies have focused on the remarkable adhesive properties of polydopamine, which can bind to substrates with a wide range of surface energies, even under aqueous conditions. This behavior suggests that polydopamine may be an attractive option as a surface treatment in structural bonding applications, where good bond durability is required. Here, we assessed polydopamine as a surface treatment for bonding aluminum plates with an epoxy resin. A model epoxy adhesive consisting of diglycidyl ether of bisphenol A (DGEBA) and Jeffamine D230 polyetheramine was employed, and lap shear measurements (ASTM D1002 10) were made (i) under dry conditions to examine initial bond strength and (ii) after exposure to hot/wet (63 °C in water for 14 days) conditions to assess bond durability. Surprisingly, our results showed that polydopamine alone as a surface treatment provided no benefit beyond that obtained by exposing the substrates to an alkaline solution of tris buffer used for the deposition of polydopamine. This implies that polydopamine has a potential Achilles' heel, namely, the formation of a weak boundary layer that was identified using X-ray photoelectron spectroscopy (XPS) of the fractured surfaces. In fact, for longer deposition times (2.5 and 18 h), the tris buffer-treated surface outperformed the polydopamine surface treatments, suggesting that tris buffer plays a unique role in improving adhesive performance even in the absence of polydopamine. We further showed that the use of polydopamine-3-aminopropyltriethoxysilane (APTES) hybrid surface treatments provided significant improvements in bond durability at extended deposition times relative to both polydopamine and an untreated control
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|a Journal Article
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Benzhydryl Compounds
|2 NLM
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|a Epoxy Compounds
|2 NLM
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|a Indoles
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|a Phenols
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|a Polymers
|2 NLM
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|a Propylamines
|2 NLM
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|a Silanes
|2 NLM
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|a polydopamine
|2 NLM
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|a bisphenol A diglycidyl ether
|2 NLM
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|a F3XRM1NX4H
|2 NLM
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|a amino-propyl-triethoxysilane
|2 NLM
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| 650 |
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|a L8S6UBW552
|2 NLM
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|a bisphenol A
|2 NLM
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|a RW57K3X12M
|2 NLM
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| 700 |
1 |
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|a Flanagan, David P
|e verfasserin
|4 aut
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1 |
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|a Orlicki, Joshua A
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Lenhart, Joseph L
|e verfasserin
|4 aut
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1 |
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|a Proctor, Kenneth L
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Knorr, Daniel B
|c Jr
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1985
|g 34(2018), 4 vom: 30. Jan., Seite 1274-1286
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnas
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| 773 |
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|g volume:34
|g year:2018
|g number:4
|g day:30
|g month:01
|g pages:1274-1286
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|u http://dx.doi.org/10.1021/acs.langmuir.7b03178
|3 Volltext
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|d 34
|j 2018
|e 4
|b 30
|c 01
|h 1274-1286
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