Revisiting the Challenges in Fabricating Uniform Coatings with Polyfunctional Molecules on High Surface Energy Materials

Download

index.pdf

Date

2015-12-01

Author

Oyola-Reynoso, Stephanie
Wang, Zhengjia
Chen, Jiahao
Çınar, Simge
Chang, Boyce
Thuo, Martin

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

169
views

90
downloads

Modifying the chemistry of a surface has been widely used to influence interfacial properties of a material or nature of interaction between two materials. This article provides an overview on the role of polyfunctional molecules, specifically silanes, in surface modification of polar surfaces (bearing soft nucleophiles). An emphasis on the mechanism of the reaction in the presence of adsorbed water, where the modifying reagents are hydrolysable, is discussed. To highlight the complexity of the reaction, modification of paper with trichlorosilanes is highlighted. Preparation of hydrophobic cellulosic paper, and structure-property relations under different treatment conditions is used to highlight that a monolayer is not always formed during the surface modification. Gel-formation via step-growth polymerization suggests that at the right monomer: adsorbed water ratio, a monolayer will not form but rather self-assembly driven particle formation will occur leading to a textured surface. The review highlights recent work indicating that the focus on monolayer formation, is at the very least, not always the case but gel formation, with concomitant self-assembly, might be the culprit in understanding challenges associated with the use of polyfunctional molecules in surface modification.

Subject Keywords

Silane, Surface science, Coatings, Monolayers, Polymer gel, Surface water

URI

https://hdl.handle.net/11511/41856

Journal

COATINGS

DOI

https://doi.org/10.3390/coatings5041002

Collections

Department of Metallurgical and Materials Engineering, Article

Suggestions

OpenMETU
Core

Assessing effects of (3-aminopropyl) trimethoxysilane self-assembled layers on surface characteristics of organosilane-grafted moisture-crosslinked polyethylene substrate: A comparative study between chemical vapor deposition and plasma-facilitated in situ grafting methods Sarkari, Navid Mostofi; Doğan, Öznur; Bat, Erhan; Mohseni, Mohsen; Ebrahimi, Morteza (Elsevier BV, 2019-12-15) Silane coupling agents can act as bonding intermediates at the interface of two dissimilar materials by altering surface properties. In this study, (3-aminopropyl) trimethoxysilane (APTMS) was used as a silane precursor for vapor-phase deposition on organosilane-grafted moisture-crosslinked polyethylene (Si-XLPE) substrate. Chemical vapor deposition (CVD) and plasma-facilitated in situ grafting methods (grafting-from and grafting-onto) were employed to graft APTMS, and the consequent effects on surface of S...
Combined effect of point defects and layer number on the adsorption of benzene and toluene on graphene Akay, Tugce Irfan; Toffoli, Daniele; Toffoli, Hande (Elsevier BV, 2019-06-30) Understanding the adsorption properties of organic molecules on graphene-based substrates is important for such applications as air and water filters. Pristine graphene is often the model substrate used in the theoretical investigations of this problem. While useful, pristine single-layer graphene is however an idealized model. In this work, we assess the effect of the presence of point defects (single vacancy, divacancy, and the Stone-Wales defect) in single-layer and bilayer graphene on the energetics of ...
First-principles investigation of CO and CO2 adsorption on gamma-Al2O3 supported monoatomic and diatomic Pt clusters Sensoy, Mehmet Gokhan; Toffoli, Hande; Toffolı, Danıele (Elsevier BV, 2020-01-01) Supported clusters of transition metal atoms are key components of heterogeneous catalysts. Understanding their interaction with small molecular species is therefore an important step in catalyst design. In this work, we provide a detailed first-principles investigation of the adsorption properties of CO and CO2 on Pt-n (n = 1, 2) clusters supported by a gamma-Al2O3 (1 0 0) substrate. In particular, important parameters such as the stability of the Pt clusters, molecular adsorption energies and vibration fr...
Evaluation of surface free energy for PMMA films Ozcan, Canturk; Hasırcı, Nesrin (2008-04-05) Surface free energy (SFE) is a property resulted from the chemical structure and the orientation of the molecules at the surface boundary of the materials. For solids, it can be calculated from the contact angles of liquid drops with known surface tension, formed on the solid surface. There are various SFE evaluation methods based on different theoretical assumptions. In this study, SFE and the dispersive, polar, acidic and basic components of the SFE of a polymeric material, poly(methyl methacrylate) (PMMA...
Synthesis and characterization of multi-hollow opaque polymer pigments Asmaoğlu, Serdar; Gündüz, Güngör; Maviş, Bora; Department of Chemical Engineering (2012) In the present work, a new generation opaque polymer pigment with multihollow structure was synthesized by suspension polymerization of “Water-in-Oil-in-Water” (W/O/W) emulsion system. Oil phase was methyl methacrylate and ethylene glycol dimethacrylate monomer mixture at 1:1 weight ratio. The dimension and distribution of hollows inside polymer particles are dependent on the size of water droplets which are encapsulated in micelles. For Water-in-Oil (W/O) assembly, a hydrophobic surfactant and hydrophilic ...

Citation Formats

S. Oyola-Reynoso, Z. Wang, J. Chen, S. Çınar, B. Chang, and M. Thuo, “Revisiting the Challenges in Fabricating Uniform Coatings with Polyfunctional Molecules on High Surface Energy Materials,” COATINGS, pp. 1002–1018, 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/41856.