A novel mono‐methacryloyloxy terminated fluorinated macromonomer used for the modification of UV curable acrylic copolymers

Abstract

A novel macromonomer containing fluorinated units (PHFBMA-GMA) was synthesized through a two-step procedure: firstly, hexafluoro-butyl methacrylate (HFBMA) was polymerized in the presence of functional chain transfer agent 3mercaptopropionic acid (MPA) and then the carboxyl acid group terminated polymer was end-capped with glycidyl methacrylate (GMA). Chemical structures of PHFBMA-GMA were characterized by gel permeation chromatography, fourier transform infrared spectroscopy (FTIR), and 1 H nuclear magnetic resonance (NMR). Subsequently, PHFBMA-GMA was employed as reactive surface additives added into UV-cured polyacrylate to modify UV-curable coatings. It is convenient to control the tail length of the fluorinated segments in this study by adjusting the ratio of initiator and chain transfer agent. The influence of both the concentration and the molecular weight of PHFBMA-GMA on the surface properties of UV-cured films was investigated. With increasing both the concentration and the molecular weight of PHFBMA-GMA, the surface energy of the UV-cured films decreased. X-ray photoelectron spectroscopy was employed to characterize and quantify the surface composition and the results confirm the enrichment of fluorinate atoms on the surface. Moreover, the physical properties of UV-cured films, such as gel content, water absorption, pencil hardness, adhesion, chemical resistance, mechanical properties, optical transmittance, and thermal properties, were also investigated in detail. The novel macromonomer was economical but effective to modify the properties of the UV-curable coatings. V C 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43116.

Preparation and performance of waterborne UV‐curable polyurethane containing long fluorinated side chains

“…The polymerization proceeded at 78 °C for another 24 h after added. The purification procedure was the same as that described in our previous researches …”

“…Instruments and characterization methods were the same as that described in our previous researches except for atomic force microscopy (AFM) which was carried out using a tapping mode on Seiko SPA‐400. In contact angle measurements, the volume of the drops was 2 μL.…”

“…The unique characteristics of fluoropolymers such as oleo‐ and hydrophobicity, excellent thermal and chemical properties, photochemical stability, and low surface energy have attracted great attention in coating technology . The incorporation of fluorine atoms can lower the surface energy and enhance the hydrophobicity of waterborne UV‐curable polyurethane.…”

Mechanical Properties of a Soy Protein Isolate–Grafted–Acrylate (SGA) Copolymer Used for Wood Coatings

“…Polyacrylate waterborne coatings are one of the main varieties of wood coatings with many advantages, such as exhibiting strong adhesion, forming colorless coatings, exhibiting high transparency, and possessing high solid contents. However, further applications of acrylate waterborne coatings are limited by their low hardness values and poor mechanical properties [3][4][5].…”

Synthesis and antibiofouling properties of crosslinkable copolymers grafted with fluorinated aromatic side chains

“…In this regard, the potency of uoropolymers and silicon elastomers, which have been considered as the most promising candidates, have been explained in terms of their low surface energy and interesting mechanical properties. [6][7][8] Poly(dimethylsiloxane) (PDMS) elastomers, as the most important nontoxic anti-biofouling coating materials, have been widely used in commercial applications owing to their low modulus and low surface energy. 9 However, the antifouling efficacy of PDMS marine coatings is not as good as toxic paints, and regular mechanical cleaning (scrubbing) of the coated surface is also required, which increases the operational expense.…”