Low Surface Energy Polymeric Films from Novel Fluorinated Blocked Isocyanates

Ravenstein, Luc van; Ming, Weihua; Grampel, R.D. van de; Linde, R. van der; Loontjens, Ton; Thüne, Peter C.; Niemantsverdriet, J.W.

doi:10.1021/ma035296i

Cited by 112 publications

(63 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fluorinated polymers have attracted much attention of many researchers for their unique properties such as low surface free energy, refractive index and friction coefficient, and high thermal, chemical and weather resistance owing to the low polarizability and the strong electronegativity of fluorine atom [21][22][23][24]. However, the relatively high market prices of the fluorine-containing monomers restrict their use.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of emulsifier-free trilayer core–shell polysilsesquioxane/polyacrylate/poly(fluorinated acrylate) hybrid latex particles

et al. 2012

View full text Add to dashboard Cite

The trilayer core-shell polysilsesquioxane/polyacrylate/poly(fluorinated acrylate) (PSQ/PA/PFA) hybrid latex particles are successfully prepared, using functional PSQ latex particles with reactive methacryloxypropyl groups synthesized by the hydrolysis and polycondensation of (3-methacryloxypropyl)trimethoxysilane in the presence of a reactive emulsifier as seeds. Transmission electron microscopy (TEM), scanning electron microscopy (SEM) and dynamic light scattering (DLS) confirm that the resultant hybrid latex particles have evident trilayer core-shell structure and a narrow size distribution. The Fourier transform infrared (FTIR) spectra show that fluorinated acrylate monomers are effectively involved in the emulsion copolymerization and formed the fluorine-containing hybrid latex particles. XPS analysis of the obtained hybrid latex film reveals that the intensity of fluorine signal in the film-air interface is higher than that in the film-glass interface. In addition, compared with pure polyacrylate latex film, the obtained fluorine-containing hybrid film shows higher hydrophobicity and thermal stability, and lower surface free energy.

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of emulsifier-free trilayer core–shell polysilsesquioxane/polyacrylate/poly(fluorinated acrylate) hybrid latex particles

et al. 2012

View full text Add to dashboard Cite

show abstract

“…[6][7][8] Furthermore, this concept of selfstratification has been investigated extensively for the preparation of low-surface-tension films. [9][10][11][12][13][14][15] Fluorinated oligomers of very low surface energy and phosphonated oligomers of very high surface energy are studied in our laboratory. Some additives based on such oligomers were synthesized and dispersed into various coatings to study their migration.…”

Section: Introductionmentioning

confidence: 99%

Migration of Additives in Polymer Coatings: Phosphonated Additives and Poly(vinylidene chloride)‐Based Matrix

Rixens

Severac²,

Boutevin

et al. 2005

Macro Chemistry & Physics

View full text Add to dashboard Cite

Summary: The living radical terpolymerization of vinylidene chloride (VC2), methyl acrylate (MA), and dimethyl‐2‐methacryloxyethylphosphonate (MAPHOS) was performed at 70 °C in benzene by a reversible addition fragmentation chain transfer (RAFT) process to yield a gradient terpolymer of controlled molecular weight ($\overline M _{\rm n}$ = 5 800 g · mol−1, Ip = 1.53) with a molar composition of 75:14:11 (VC2/MA/MAPHOS). Such terpolymers, hydrolyzed (phosphonic acid groups) or not, were used as polymeric additives in coating formulations based on a poly(VC2‐co‐MA) copolymer matrix ($\overline M _{\rm n}$ = 63 300 g · mol−1, Ip = 1.99, VC2/MA = 80:20 molar ratio). The formulations were spun cast on stainless steel surfaces and the coatings were observed by scanning electron microscopy (SEM) coupled with X‐ray analyses (EDX). The hydrolyzed additive was shown to both segregate and migrate towards the metal interface, leading to a preferential organization of the coating. Hence, the matrix at the air surface acts as a barrier to gas while the additive ensures adhesion at the polymer/metal interface.SEM photograph of a section of the coating with formulation 4 [poly(VC2‐co‐MA‐co‐MAPHOS(OH)2) (75:14:11)].magnified imageSEM photograph of a section of the coating with formulation 4 [poly(VC2‐co‐MA‐co‐MAPHOS(OH)2) (75:14:11)].

show abstract

“…If segregation occurs extensively in the preparation phase, the system behaves as a typical self-stratifi ed coating but no replenishing may occur; [ 23 ] on the other hand, if a large part of the functional groups are entrapped at the bulk, it may also be detrimental for the surface properties of the original coatings. [ 24 ] The distribution of the fl uorinated groups in polymer layers can be indirectly assessed by several experimental techniques [ 25,26 ] or sectioning the polymer layer and analyzing each slice and new surface. However, these methods are time-consuming, not practical and very sensitive to surface contamination and roughening artifacts introduced by the damage itself.…”

Section: Dangling Chains Distributionmentioning

confidence: 99%

Simulation‐Experimental Approach to Investigate the Role of Interfaces in Self‐Replenishing Composite Coatings

Lyakhova

Esteves

Put

et al. 2014

Adv Materials Inter

View full text Add to dashboard Cite

which changes their surface characteristics and compromises their performance.One way to increase the durability of functional coatings is to create a system which is able to relocate the low surface energy groups at the damaged surfaces and recover the low surface energy properties, i.e., to introduce a self-healing function. In the case of surface-structured coatings, the repair of the surface roughness is an additional challenge. [ 5,6 ] One of the possible solutions reported by Li et al., [ 7 ] is the creation of a porous polymer coating with micro-and nano-scale structures, for which the 'healing agent' consists of a low surface energy component previously impregnated in the porous layer. After damage, this component migrates to the new porous coating surface restoring its (super)hydrophobicity when exposed to a humid environment. Another possibility is to encapsulate a surface-active material in nano-containers [ 8 ] which will be released at the surface upon damage. The self-organization of colloidal particles at interfaces has also been used to design materials with surface-healing properties by embedding colloidal silica particles in a perfl uorinated wax. [ 9,10 ] Upon damage and an annealing step (at 60 °C), the wax melts and the particles migrate to the surface, recreating a new topography covered by the waxy layer. [ 9 ] Recently, a surface-healing approach was reported by our group [ 11 ] which uses a polymer network that is able to replenish damaged surfaces with low surface energy components, autonomously and at room temperature. Perfl uoro-alkyl-terminated dangling chains connected to a poly(ester urethane) crosslinked network are able to spontaneously re-orient to new air interfaces created by damage. A polymeric spacer was included in the dangling chains in order to control their mobility and ensure surface reorientation, but also to provide the proper miscibility with the bulk network and avoid complete surface segregation. [ 11 ] This self-replenishing principle can be applied to recover surface properties such as hydrophobicity. However, for structured surfaces topography needs to be equally repaired or recreated. Hence we applied the self-replenishing principle on polymer layers with dual-scale roughness, [ 12 ] created by introducing inorganic nanoparticles with two different sizes (≈70/700 nm). For this system a multi-scale surface roughness is re-created by the damage, while the polymer layer between the particles serves as the source of low surface energy To investigate self-replenishing on surface-structured composite coatings a dual simulation-experimental approach is employed to study the decisive role of polymer-air and polymer-particle interfaces. Experimentally, the composite system consists of a cross-linked polymer network with fl uorinated-dangling chains, embedding colloidal SiO 2 nanoparticles which are incorporated in the network via covalent bonding. These particles provide the desired surface structure at the air-interface before and after damage. Any damage replicates the...

show abstract

Low Surface Energy Polymeric Films from Novel Fluorinated Blocked Isocyanates

Cited by 112 publications

References 14 publications

Synthesis and characterization of emulsifier-free trilayer core–shell polysilsesquioxane/polyacrylate/poly(fluorinated acrylate) hybrid latex particles

Synthesis and characterization of emulsifier-free trilayer core–shell polysilsesquioxane/polyacrylate/poly(fluorinated acrylate) hybrid latex particles

Migration of Additives in Polymer Coatings: Phosphonated Additives and Poly(vinylidene chloride)‐Based Matrix

Simulation‐Experimental Approach to Investigate the Role of Interfaces in Self‐Replenishing Composite Coatings

Contact Info

Product

Resources

About