Properties of steel surfaces coated with organic molecules

Amani Ponzoni, Sara Ottoboni, Manfredo Guillizzoni, Maurizio Zani, Paolo Gronchi

Research output: Contribution to conferencePaper

Abstract

Superhydrophobic state is one of the most interesting and attractive topic in these years due to the wide application possibilities. Roughness and surface tension are the main parameters to be controlled to obtain a surface with hydrophobic properties. The topic of this thesis is to investigate how substrate roughness and coating deposition parameters influence wettability properties. Different chemo-physical surface properties were performed by creating different substrate roughness and by applying different coatings. As substrate has been chosen mild carbon steel, use both as received and after sandblasting treatment. Over these substrates a thin organic film coating has been applied. The employed coatings were purchased or were synthesized and characterized in laboratory. Their deposition procedure was made of three main steps: cleaning, etching and post thermal treatment. Etching time and post thermal treatment has been widely surveyed to respectively improve active sites concentration on the metallic substrate and to improve the strength of anchoring bonding. For each kind of coating, three different alkyl chain lengths have been studied to understand their role in the wettability. Optical contact angle analysis was used to establish wetting properties, atomic force microscopy (AFM) was used to characterize samples mechanical properties (roughness and coatings adhesion force). Glow discharge optical emission spectroscopy (GDOES) characterization was used to quantify coatings thickness and to determine their chemical composition. Electrical samples properties were studied by electrochemical impedance (EI), while surface morphologies were detected by using scanning electron microscopy (SEM).

Conference

ConferenceXXX International Conference on Surface Modification Technologies (SMT30)
Abbreviated titleSMT30
CountryItaly
CityMilan
Period29/06/161/07/16
Internet address

Fingerprint

Steel
Coatings
Molecules
Surface roughness
Substrates
Wetting
Carbon steel
Etching
Heat treatment
Optical emission spectroscopy
Glow discharges
Chain length
Contact angle
Surface properties
Surface morphology
Surface tension
Cleaning
Atomic force microscopy
Adhesion
Mechanical properties

Keywords

  • self assembly monolayer
  • pre and post treatments
  • wettability
  • roughness
  • anchoring groups

Cite this

Ponzoni, A., Ottoboni, S., Guillizzoni, M., Zani, M., & Gronchi, P. (2016). Properties of steel surfaces coated with organic molecules. Paper presented at XXX International Conference on Surface Modification Technologies (SMT30), Milan, Italy.
Ponzoni, Amani ; Ottoboni, Sara ; Guillizzoni, Manfredo ; Zani, Maurizio ; Gronchi, Paolo. / Properties of steel surfaces coated with organic molecules. Paper presented at XXX International Conference on Surface Modification Technologies (SMT30), Milan, Italy.11 p.
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Ponzoni, A, Ottoboni, S, Guillizzoni, M, Zani, M & Gronchi, P 2016, 'Properties of steel surfaces coated with organic molecules' Paper presented at XXX International Conference on Surface Modification Technologies (SMT30), Milan, Italy, 29/06/16 - 1/07/16, .

Properties of steel surfaces coated with organic molecules. / Ponzoni, Amani; Ottoboni, Sara; Guillizzoni, Manfredo ; Zani, Maurizio; Gronchi, Paolo.

2016. Paper presented at XXX International Conference on Surface Modification Technologies (SMT30), Milan, Italy.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Properties of steel surfaces coated with organic molecules

AU - Ponzoni, Amani

AU - Ottoboni, Sara

AU - Guillizzoni, Manfredo

AU - Zani, Maurizio

AU - Gronchi, Paolo

PY - 2016/7/1

Y1 - 2016/7/1

N2 - Superhydrophobic state is one of the most interesting and attractive topic in these years due to the wide application possibilities. Roughness and surface tension are the main parameters to be controlled to obtain a surface with hydrophobic properties. The topic of this thesis is to investigate how substrate roughness and coating deposition parameters influence wettability properties. Different chemo-physical surface properties were performed by creating different substrate roughness and by applying different coatings. As substrate has been chosen mild carbon steel, use both as received and after sandblasting treatment. Over these substrates a thin organic film coating has been applied. The employed coatings were purchased or were synthesized and characterized in laboratory. Their deposition procedure was made of three main steps: cleaning, etching and post thermal treatment. Etching time and post thermal treatment has been widely surveyed to respectively improve active sites concentration on the metallic substrate and to improve the strength of anchoring bonding. For each kind of coating, three different alkyl chain lengths have been studied to understand their role in the wettability. Optical contact angle analysis was used to establish wetting properties, atomic force microscopy (AFM) was used to characterize samples mechanical properties (roughness and coatings adhesion force). Glow discharge optical emission spectroscopy (GDOES) characterization was used to quantify coatings thickness and to determine their chemical composition. Electrical samples properties were studied by electrochemical impedance (EI), while surface morphologies were detected by using scanning electron microscopy (SEM).

AB - Superhydrophobic state is one of the most interesting and attractive topic in these years due to the wide application possibilities. Roughness and surface tension are the main parameters to be controlled to obtain a surface with hydrophobic properties. The topic of this thesis is to investigate how substrate roughness and coating deposition parameters influence wettability properties. Different chemo-physical surface properties were performed by creating different substrate roughness and by applying different coatings. As substrate has been chosen mild carbon steel, use both as received and after sandblasting treatment. Over these substrates a thin organic film coating has been applied. The employed coatings were purchased or were synthesized and characterized in laboratory. Their deposition procedure was made of three main steps: cleaning, etching and post thermal treatment. Etching time and post thermal treatment has been widely surveyed to respectively improve active sites concentration on the metallic substrate and to improve the strength of anchoring bonding. For each kind of coating, three different alkyl chain lengths have been studied to understand their role in the wettability. Optical contact angle analysis was used to establish wetting properties, atomic force microscopy (AFM) was used to characterize samples mechanical properties (roughness and coatings adhesion force). Glow discharge optical emission spectroscopy (GDOES) characterization was used to quantify coatings thickness and to determine their chemical composition. Electrical samples properties were studied by electrochemical impedance (EI), while surface morphologies were detected by using scanning electron microscopy (SEM).

KW - self assembly monolayer

KW - pre and post treatments

KW - wettability

KW - roughness

KW - anchoring groups

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M3 - Paper

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Ponzoni A, Ottoboni S, Guillizzoni M, Zani M, Gronchi P. Properties of steel surfaces coated with organic molecules. 2016. Paper presented at XXX International Conference on Surface Modification Technologies (SMT30), Milan, Italy.