01720nas a2200205   4500008004100000245013500041210006900176260000800245520093500253100002201188700002401210700002001234700001901254700001801273700002601291700001601317700003001333700002001363856013101383       2017                        eng d00aMultiple functionalities of Ni nanoparticles embedded in carboxymethyl guar gum polymer: catalytic activity and superparamagnetism0 aMultiple functionalities of Ni nanoparticles embedded in carboxy  cJAN3 aComposites comprising of metallic nanoparticles in polymer matrices have allured significant importance due to multifunctionalities. Here a simple protocol has been described to embed Ni nanoparticles in carboxymethyl guar gum (CMGG) polymer. The composite formation helps in the stabilization of Ni nanoparticles which are otherwise prone towards aerial oxidation. Further the nanoparticles retain their superparamagnetic nature and catalytic capacity. Ni-Polymer composite catalyses the reduction of 4-Nitrophenol to 4-Aminophenol very efficiently in presence of NaBH4, attaining a complete conversion under some experimental conditions. Ni-Polymer composite is well characterized using UV–vis spectroscopy, FTIR, XPS, powder XRD, TGA, SEM and TEM. A detailed magnetic measurement using superconducting quantum interference device-vibrating sample magnetometer (SQUID-VSM) reveals superparamagnetic behaviour of the composite.1 aSardar, Debasmita1 aSengupta, Manideepa1 aBordoloi, Ankur1 aAhmed, Md., A.1 aNeogi, S., K.1 aBandyopadhyay, Sanjoy1 aJain, Ruchi1 aGopinath, Chinnakonda, S.1 aBala, Tanushree  uhttps://library.ncl.res.in/content/multiple-functionalities-ni-nanoparticles-embedded-carboxymethyl-guar-gum-polymer-catalytic