TY - JOUR
T1 - Block copolymers of acrylonitrile and poly(dimethylsiloxane)s
AU - Köken, Nesrin
AU - Karagöz, Serap
AU - Kizilcan, Nilgün
AU - Ustamehmetoǧlu, Belkis
PY - 2013/3/5
Y1 - 2013/3/5
N2 - The chemical redox system of ceric ammonium nitrate(Ce4+) and poly(dimethylsiloxane)s (PDMS) with monohydroxy (MH), dihydroxy (DH), and diamine(DA) chain ends was used to polymerize acrylonitrile (AN) to produce monohydroxy poly(dimethylsiloxane)s-b-polyacrylonitrile (MH.PDMS-b-PAN), dihydroxy poly(dimethylsiloxane)s-b-polyacrylonitrile (DH.PDMS-b-PAN), and α, Iω-diamine poly(dimethylsiloxane)s-b-polyacrylonitrile (DA.PDMS-b-PAN) block copolymers. The concentration, reaction time, and the type of poly(dimethylsiloxane) affect the yield and the molecular weight of the copolymers. The ratio of AN/ceric salt/PDMS has remarkably affects the properties of formed copolymers. DH.PDMS-b-PAN copolymers were also prepared by electroinduced polymerization in the presence of catalytic amount of Ce 4+ in a divided electrochemical cell where Ce3+ is readily oxidized into Ce4+ at the anode. The products were characterized by Fourier transform infrared spectroscopy, 1H-NMR spectroscopy, DSC, and their surface properties were investigated through contact-angle measurements.
AB - The chemical redox system of ceric ammonium nitrate(Ce4+) and poly(dimethylsiloxane)s (PDMS) with monohydroxy (MH), dihydroxy (DH), and diamine(DA) chain ends was used to polymerize acrylonitrile (AN) to produce monohydroxy poly(dimethylsiloxane)s-b-polyacrylonitrile (MH.PDMS-b-PAN), dihydroxy poly(dimethylsiloxane)s-b-polyacrylonitrile (DH.PDMS-b-PAN), and α, Iω-diamine poly(dimethylsiloxane)s-b-polyacrylonitrile (DA.PDMS-b-PAN) block copolymers. The concentration, reaction time, and the type of poly(dimethylsiloxane) affect the yield and the molecular weight of the copolymers. The ratio of AN/ceric salt/PDMS has remarkably affects the properties of formed copolymers. DH.PDMS-b-PAN copolymers were also prepared by electroinduced polymerization in the presence of catalytic amount of Ce 4+ in a divided electrochemical cell where Ce3+ is readily oxidized into Ce4+ at the anode. The products were characterized by Fourier transform infrared spectroscopy, 1H-NMR spectroscopy, DSC, and their surface properties were investigated through contact-angle measurements.
KW - block copolymers
KW - polyacrylonitrile
KW - polysiloxanes
KW - radical polymerization
UR - http://www.scopus.com/inward/record.url?scp=84870523878&partnerID=8YFLogxK
U2 - 10.1002/app.37649
DO - 10.1002/app.37649
M3 - Article
AN - SCOPUS:84870523878
SN - 0021-8995
VL - 127
SP - 3790
EP - 3797
JO - Journal of Applied Polymer Science
JF - Journal of Applied Polymer Science
IS - 5
ER -