کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5361539 | 1388274 | 2008 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Surface modification of active metals through atom transfer radical polymerization grafting of acrylics
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
The objective of this work is to investigate the fundamentals of surface-initiated atom transfer radical polymerization (s-ATRP) on metal substrates. Acrylic polymers were grafted from active metal surfaces such as cold rolled steel (CRS), stainless steel (SS) and nickel (Ni) through s-ATRP. Severe deactivation was found with copper bromide bipyridine catalyst. Controlled polymerization with relatively low polydispersities, 1.18-1.35, was achieved using iron bromide triphenylphosphine catalyst. Polymer films up to 80Â nm in thickness were obtained within 80Â min. Grafting densities were estimated to be 0.58Â chains/nm2 for CRS-g-PMMA, 0.55Â chains/nm2 for Ni-g-PMMA, 0.18Â chains/nm2 for SS-g-PMMA, and 0.66Â chains/nm2 for SS-g-PDMAEMA. Electrochemical experiments were also carried out to measure the polarization resistance and corrosion potential of CRS-g-PMMA substrates. Metal surfaces with grafted brush polymer coatings showed significant corrosion resistance. This work demonstrated that the surface-initiated ATRP is a versatile means for the surface modification of active metals with well-defined and functionalized polymer brushes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 254, Issue 21, 30 August 2008, Pages 6802-6809
Journal: Applied Surface Science - Volume 254, Issue 21, 30 August 2008, Pages 6802-6809
نویسندگان
Rachel Gong, Shane Maclaughlin, Shiping Zhu,