• Title/Summary/Keyword: perfluoroalkyl acrylate

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Textile Surface Modification by Environmentally Friendly Waterborne Fluorinated Acrylate Copolymer (환경친화형 수분산성 불소 아크릴레이트 공중합체에 의한 섬유 표면개질)

  • Yoo Su-Yong;Kim Jung-Du;Moon Myung-Jun;Suh Cha-Su;Ju Chang-Sik;Lee Min-Gyu
    • Journal of Environmental Science International
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    • v.13 no.10
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    • pp.947-953
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    • 2004
  • Waterborne fluorinated acrylate copolymer (WFAC) for surface modification of textile was synthesized from perfluoroalkyl ethyl acrylate, octadecyl acrylate, glycidyl methacrylate, surfactant and 3,3 methyl-methoxy butanol. The structures of the synthesized WFAC were determinated by FT-IR and $^{19}F-NMR$ analysis. The thermal stability investigated with DSC and TGA was decreased with increasing the content of fluorinated acrylate in the copolymer. However, the particle sizes of WFAC were increased with increasing the content of fluorinated acrylate in the copolymer. The surface energies calculated by contact angles of WFAC were in the range of 29.80$\~$13.41 dyne/cm. On the observing SEM of the textile surface treated with WFAC, the textile was swollen and compacted with increasing the concentration of water repellency agent. WFAC synthesized in this study showed a good water repellency.

Emulsion Polymerization and Surface Properties of Perfluoroalkylethyl Acrylate/Acrylate/Glycidyl Methacrylate Copolymers (퍼플로오로알킬에틸아크릴레이트/아크릴레이트/그리시딜메타크릴레이트 공중합체의 유화중합 및 그들의 표면특성)

  • Yoon, Jong-Kook;Lee, Jung-Hee;Kim, Ji-Soo;Lee, Young-Hee;Lee, Dong-Jin;Kim, Han-Do
    • Clean Technology
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    • v.18 no.2
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    • pp.170-176
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    • 2012
  • A series of acrylic copolymers containing perfluoroalkyl acrylate were synthesized by 2-step emulsion polymerization of variety of acrylate monomers (ethyl acrylate, butyl acrylate or methyl methacrylate) with perfluoroalkyl ethyl acrylate (PFA) and glycidyl methacrylate (GMA) monomers. This study focused on effects of monomer compositions (the kind of acrylate monomer, contents of PFA and GMA) and composition of surfactants [(sodium dodecyl sulphate/nonylphenol 10mole ethoxylate (NP-10)] and initiator content on the contact angles and surface free energy. It was found that the copolymer having an optimum composition (BA : 87 wt%, GMA : 8.7 wt% and PFA : 4.3 wt%) was shown to be quite surface active [surface free energy : 19.89 mN/m and contact angles : $103.5^{\circ}$ (water) and $78.7^{\circ}$ (methylene iodide)] in the solid state. This result suggests that the optimal copolymer containing fluorinated monomer synthesized in this study have high potential as a low surface energy material, which may have high oil- and water-repellent surface and have been proposed as acrylic syntan for leather and also as soil-resistant/oil and water repellent coating for textiles and wood etc.

Copolymerization and Characteristics of Styrene and Fluorine-Containing Acrylate (스티렌과 불소함유 아크릴레이트의 공중합 및 공중합체의 특성)

  • 김상신;이상원;허정림;허완수
    • Polymer(Korea)
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    • v.26 no.1
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    • pp.9-17
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    • 2002
  • The free radical bulk copolymerizations of perfluoroalkylethyl acrylate(FA) containing perfluoro group ($CF_3(CF_2)_nCH_2CH_2$-; n=5, 7, 9, 11) with styrene were conducted at $60^{\circ}C$ using AIBN as an initiator. Reactivity ratios($r_1$, $r_2$) were determined from monomer feed compositions and the NMR spectroscopically measured copolymer compositions using Kelen-Tudos method. The structures of copolymers were characterized with FT-IR and $^1H-NMR$ analysis. Their thermal properties investigated with DSC and TGA were decreased with increasing the content of fluorinated acrylate in the copolymer. Their surface free energies were calculated with measuring contact angles of the copolymers and PMMA blends with a small amount of them.

Synthesis of Waterborne Perfluoroacrylic Polyurethane Composite and Its Property (과불소 아크릴 수성 폴리우레탄 복합체의 합성 및 물성)

  • Yoo, Su-Yong;Kim, Jung-Du;Moon, Myung-Jun;Kam, Sang-Kyu;Lee, Min-Gyu
    • Journal of Environmental Science International
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    • v.16 no.8
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    • pp.865-872
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    • 2007
  • The waterborne perfluoroacylic polyurethane composite (WFPUC) series were prepared by the emulsion polymerization (WFPUC-E) and the physical blending (WFPUC-B). WFPUC-E was prepared by polymerizing perfluoroalkyl ethyl acrylate (FA) and waterborne polyurethane (WPU), and WFPUC-B was prepared by blending FA copolymer and WPU. The structures of the synthesized WFPUC were identified by using FT-IR-ATR. The surface and thermal properties of the synthesized WFPUC were investigated by measuring contact angle, surface energy, and TGA. The surface energy of WFPUC-E was lower than that of WFPUC-B. The thermal stability of the WFPUC-B showed better than that of the WFPUC-E.