نتایج جستجو برای: controlled polymerization

تعداد نتایج: 411514  

Journal: :ACS applied polymer materials 2022

We present a class of porous polymer monoliths with high visible light transmittance and low haze synthesized using nitroxide-mediated stable free radical polymerization (SFRP), form controlled polymerization, to suppress large pore structures. Such materials can find applications in thermally insulated windows. Aerogels adjustable optical properties were achieved by modulating the nitroxide eq...

2004
Benn C. Wilson Christopher W. Jones

n-Propylsulfonic acid-functionalized porous and nonporous silica materials are evaluated in the ring-opening polymerization of -caprolactone. All catalysts allow for the controlled polymerization of the monomer, producing polymers with controlled molecular weights and narrow polydispersities. Polymerization rates are low, with site-time yields generally 1-3 orders of magnitude lower than metalb...

Journal: :journal of physical & theoretical chemistry 2011
mohammad yari sajjad sedaghat

hybrid nanocomposites of binary pt-ru/polyaniline were prepared by oxidative polymerization of aniline andformation pt and ru nanoparticles. the polymerization of aniline was carried out in the presence of potassiumhexa cyano platinate (iv) and ruthenium (iii) nitrosyl nitrate as oxidizing agents. during the reaction anilinemonomers undergo oxidation and form polyaniline (pani) whereas the redu...

Journal: :Journal of Polymer Science Part A: Polymer Chemistry 1990

Mohammad Yari Sajjad Sedaghat

Hybrid nanocomposites of binary Pt-Ru/Polyaniline were prepared by oxidative polymerization of aniline andformation Pt and Ru nanoparticles. The polymerization of aniline was carried out in the presence of Potassiumhexa cyano Platinate (IV) and Ruthenium (III) nitrosyl nitrate as oxidizing agents. During the reaction anilinemonomers undergo oxidation and form polyaniline (PANi) whereas the redu...

This investigation indicates the ability to selectively graft glycidyl methacrylate (GMA) only from the external surface of regenerated cellulose (RC) ultrafiltration (UF) membranes using activator generated electron transfer (AGET) atom transfer radical polymerization (ATRP). This controlled polymerization resulted in epoxy functionalized polymer brush ends. Further reaction of the terminal ep...

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