Design of Fluorinated Acrylic-Based Polymers as Water Repellent, Intrinsically Photostable Coating Materials for Stone

2001 ◽  
pp. 129-142 ◽  
Author(s):  
V. Castelvetro ◽  
M. Aglietto ◽  
F. Ciardelli ◽  
O. Chiantore ◽  
M. Lazzari
Keyword(s):  
Water Repellent ◽  
Coating Materials

scholarly journals Water modulates the lamellar structure and interlayer correlation of poly(perfluorooctyl acrylate) films: a specular and off-specular neutron scattering study

2021 ◽  
Author(s):  
Akihisa Yamamoto ◽  
Yuji Higaki ◽  
Judith Thoma ◽  
Esther Kimmle ◽  
Ryohei Ishige ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Osmotic Pressure ◽  
Correlation Length ◽  
Ethyl Acrylate ◽  
Contact Angles ◽  
Water Repellent ◽  
Water Molecules ◽  
Coating Materials ◽  
Water Contact ◽  
Vertical Correlation

AbstractComb-like polymers with pendant-like perfluorocarbon side chains self-assemble into smectic lamellae and have been extensively used as water-repellent, hydrophobic coating materials characterized by large water contact angles (θ > 120°). As poly(perfluorooctyl acrylate) films are “apparently hydrophobic” (θ > 120°), the interaction of such materials and water molecules has been largely overlooked. To unravel the molecular-level interactions between water and apparently hydrophobic polymers, specular and off-specular neutron scattering experiments were conducted at defined osmotic pressure ΠH2O. The poly{2-[(perfluorooctylethyl)carbamate]ethyl} acrylate (PFAUr-C8), which had a carbamate linker, transitioned to another lamellar phase at 89 °C. At T = 25 °C; the lamellar periodicity of PFAUr-C8 slightly increased with decreasing osmotic pressure, while the vertical correlation length increased. However, the poly[(perfluorooctyl)ethyl] acrylate (PFA-C8) that did not contain a carbamate linker directly transitioned to a disordered phase at 84 °C. The lamellar periodicity of PFA-C8 was largely independent of the osmotic pressure, suggesting that PFA-C8 was poorly hydrated. Remarkably, the vertical correlation length decreased with decreasing osmotic pressure. Because hydration facilitated by the linker modulated the smectic lamellae of the poly(perfluoroalkyl acrylate), water molecules could be used to optimize the self-assembly of apparently hydrophobic liquid crystalline polymers.

Fluoro-functionalized PLA polymers as potential water-repellent coating materials for protection of stone

2012 ◽  
Vol 125 (4) ◽  
pp. 3125-3133 ◽  
Author(s):  
Giulia Giuntoli ◽  
Luca Rosi ◽  
Marco Frediani ◽  
Barbara Sacchi ◽  
Piero Frediani
Keyword(s):  
Water Repellent ◽  
Coating Materials

Alternating Copolymers of Vinyl Catechol or Vinyl Phenol with Alkyl Maleimide for Adhesive and Water-Repellent Coating Materials

2020 ◽  
Vol 2 (11) ◽  
pp. 4604-4612
Author(s):  
Kana Nishimori ◽  
Mizuki Tenjimbayashi ◽  
Masanobu Naito ◽  
Makoto Ouchi
Keyword(s):  
Water Repellent ◽  
Coating Materials ◽  
Alternating Copolymers ◽  
Vinyl Phenol

Water repellent also absorbs

Nature ◽  
2003 ◽  
Author(s):  
Philip Ball
Keyword(s):  
Water Repellent

Concrete Surface Quality Improvement Technique Using Highly Water Repellent Sealing Method

2016 ◽  
Vol 54 (11) ◽  
pp. 1105-1110
Author(s):  
K. Watanabe ◽  
G. Sakai ◽  
N. Sakata ◽  
T. Ishida
Keyword(s):  
Quality Improvement ◽  
Surface Quality ◽  
Concrete Surface ◽  
Water Repellent
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