Two novel fluorinated acrylate monomers 4a and 4b containing perfluorohexyl group were designed and synthesized starting from 4-allylanisole and perfluorohexyl iodide.The monomers 4a and 4b were then copolymerized wit...Two novel fluorinated acrylate monomers 4a and 4b containing perfluorohexyl group were designed and synthesized starting from 4-allylanisole and perfluorohexyl iodide.The monomers 4a and 4b were then copolymerized with octadecyl acrylate and 2-hydroxyethyl acrylate by emulsion polymerization to give copolymers PFA 1 and PFA 2 respectively.The co-polymers were characterized by FT-IR and their heat stability was measured by TGA.The surface properties of PFA 1 and PFA 2 were studied by applying on cotton fabrics.The treated cotton fabrics showed good water-repellent property,and the contact angles for water reached 142° for PFA 1 and 136° for PFA 2.展开更多
Cationic fluorinated acrylate latex was prepared via semi-continuous emulsion copolymerization of cationic monomer and other monomers. The resultant latex and its film were characterized with dynamic light scattering ...Cationic fluorinated acrylate latex was prepared via semi-continuous emulsion copolymerization of cationic monomer and other monomers. The resultant latex and its film were characterized with dynamic light scattering detector and contact angle meter. Influences of amount of DMDAAC on the properties of resultant latex and its film were investigated in detail. Results show that the particle size of the latex has the minimum value knd the zeta potential of the latex is increased when the amount of DMDAAC is increased. In addition, the particle size of the latex is unimodal distribution when the amount of DMDAAC is not more than 2.5%. However, the particle size of the latex is bimodal distribution when the amount of DMDAAC is more than 2.5%. The contact angle is varied slightly with the increase of amount of DMDAAC when it is not more than 2.5%. Nevertheless, the contact angle is decreased with the increase of the amount of DMDAAC when it is more than 2.5%.展开更多
In order to prepare water-oil repellent and fire retardant textile finishing agent, 1H ,1H,2H,2H-perfluorooctyl acrylate （FA） and acryloyloxy-1, 3-his （ diethylphosphoramidate ） propan （BisDEAEPN） were copolymer...In order to prepare water-oil repellent and fire retardant textile finishing agent, 1H ,1H,2H,2H-perfluorooctyl acrylate （FA） and acryloyloxy-1, 3-his （ diethylphosphoramidate ） propan （BisDEAEPN） were copolymerized with 2-hydroxyethyl acrylate （ HEA ） and stearyl methacrylate （ SMA ） by emulsion polymerization to form fluorinated phosphorus-eantaining acrylate copolymer （PFPA）. The copolymer was characterized by Fourier transform infrared spectroscopy （FT.IR） and the thermal stability was investigated by thermogravimetric analysis （TGA）. The emulsion was applied on cotton fabric and the surface properties of treated fabric were studied. The treated surface showed good repellent properties as contact angle for water reached 145° and for n-dodecane 110° respectively. The surface also showed some flame retardant property with 22.5 % of limited oxygen index （LOI）.展开更多
Novel self cross-linking fluorinated acrylic latex（SCLFAL） has been successfully prepared via starved seeded semi-batch emulsion polymerization.The resultant SCLFAL is characterized by Fourier transform infrared（F...Novel self cross-linking fluorinated acrylic latex（SCLFAL） has been successfully prepared via starved seeded semi-batch emulsion polymerization.The resultant SCLFAL is characterized by Fourier transform infrared（FTIR） spectrometry.Contact angle （CA） and glass transition temperature（T_g） of the film are investigated.Results show that CA and T_g of the film can be improved when the moderate amount of HPMA is introduced into the mixed monomers.展开更多
基金Programfor Changjiang Scholars and Innovative Research Teamin University,China(No.IRT0526)Shanghai Municipal Scientific Committee,China(No.08JC1400400)
文摘Two novel fluorinated acrylate monomers 4a and 4b containing perfluorohexyl group were designed and synthesized starting from 4-allylanisole and perfluorohexyl iodide.The monomers 4a and 4b were then copolymerized with octadecyl acrylate and 2-hydroxyethyl acrylate by emulsion polymerization to give copolymers PFA 1 and PFA 2 respectively.The co-polymers were characterized by FT-IR and their heat stability was measured by TGA.The surface properties of PFA 1 and PFA 2 were studied by applying on cotton fabrics.The treated cotton fabrics showed good water-repellent property,and the contact angles for water reached 142° for PFA 1 and 136° for PFA 2.
基金supported by the Science and Technology Department of Zhejiang Province under Grant No. 2010C31040the financial support of Zhejiang Provincial Natural Science Foundation of China(No. Y4100152)Zhejiang University of Technology Natural Science Foundation(No.20100202)
文摘Cationic fluorinated acrylate latex was prepared via semi-continuous emulsion copolymerization of cationic monomer and other monomers. The resultant latex and its film were characterized with dynamic light scattering detector and contact angle meter. Influences of amount of DMDAAC on the properties of resultant latex and its film were investigated in detail. Results show that the particle size of the latex has the minimum value knd the zeta potential of the latex is increased when the amount of DMDAAC is increased. In addition, the particle size of the latex is unimodal distribution when the amount of DMDAAC is not more than 2.5%. However, the particle size of the latex is bimodal distribution when the amount of DMDAAC is more than 2.5%. The contact angle is varied slightly with the increase of amount of DMDAAC when it is not more than 2.5%. Nevertheless, the contact angle is decreased with the increase of the amount of DMDAAC when it is more than 2.5%.
文摘In order to prepare water-oil repellent and fire retardant textile finishing agent, 1H ,1H,2H,2H-perfluorooctyl acrylate （FA） and acryloyloxy-1, 3-his （ diethylphosphoramidate ） propan （BisDEAEPN） were copolymerized with 2-hydroxyethyl acrylate （ HEA ） and stearyl methacrylate （ SMA ） by emulsion polymerization to form fluorinated phosphorus-eantaining acrylate copolymer （PFPA）. The copolymer was characterized by Fourier transform infrared spectroscopy （FT.IR） and the thermal stability was investigated by thermogravimetric analysis （TGA）. The emulsion was applied on cotton fabric and the surface properties of treated fabric were studied. The treated surface showed good repellent properties as contact angle for water reached 145° and for n-dodecane 110° respectively. The surface also showed some flame retardant property with 22.5 % of limited oxygen index （LOI）.
基金supported by the Science and Technology Department of Zhejiang Province under Grant No. 2010C31040.In additionthe financial support of Zhejiang Provincial Natural Science Foundation of China(No. Y4100152)
文摘Novel self cross-linking fluorinated acrylic latex（SCLFAL） has been successfully prepared via starved seeded semi-batch emulsion polymerization.The resultant SCLFAL is characterized by Fourier transform infrared（FTIR） spectrometry.Contact angle （CA） and glass transition temperature（T_g） of the film are investigated.Results show that CA and T_g of the film can be improved when the moderate amount of HPMA is introduced into the mixed monomers.
