Abstract

Ferdos Parsa Mehr*, Houman Jafarpourgolroudbary, Behrooz Katir, Mohammad Reza Tizchang

DOI : http://dx.doi.org/10.13005/ojc/320538

In this work,Polyacrylaimde grafted carboxymethyl starch (PAAm-g-CMS) with different nitrogen contents was prepared using ultra violet /photoinitiator (UV/PI) system  where the water soluble 4-(trimethylammoniummethyl) benzophenone chloride was used as the photoinitiator. PAAm-g-CMS was further utilized to prepare PAAm-g- CMS silver nanoparticles (PAAm-g-CMS-AgNPs) composite. The latter was 12prepared using silver nitrate as a precursor and PAAm-g-CMS as both reducing and  capping agent under alkaline conditions. The as prepared PAAm-g-CMS-AgNPs  composite was characterized by FTIR and by measuring the absorbance of its  colloidal solution using UV-vis spectrophotometer. The size and shape of the nanoparticles were measured by TEM. Reproducibility of the synthesis method was also tested. Highest absorbance of the colloidal solution of PAAm-g-CMS-AgNPs  was obtained when PAAm-g-CMS (Nitrogen content (%) =7.7) concentration of 0.8%  (w/v); AgNO3 concentration of 900 ppm; pH 12; temperature 80C for 3h were used. 20 TEM showed round shape nanoparticles with size varies from 1-11 nm.

Photo-initiator; Carboxymethyl Starch; Acrylamide; PAAm-g-CMS-AgNPs composite

[ View HTML Full Text]