8 results match your criteria: "India. Electronic address: abpoly@caluniv.ac.in.[Affiliation]"

An elastic semi IPN polymer hybrid for enhanced adsorption of heavy metals.

Carbohydr Polym

May 2020

Department of Polymer Science and Technology, University of Calcutta 92, A.P.C. Road, Kolkata 700009, India. Electronic address:

An elastic semi IPN from guar gum (GG), xanthan gum (XG) and poly(acrylic acid) (PAA) was developed and used as a bioadsorbent for soluble Pb(II) and Hg(II) from water. The IPNs were developed using a photo-initiated crosslinking cum polymerization approach (benzophenone was used as an initiator) with a variable composition of the biopolymers (GG:XG fixed at 20:80 by mass) to PAA by mass (Biopolymers: PAA as 90:10, 80:20, 70:30 and 50:50, respectively). The hybrids were extensively characterized for microstructure, morphology, swelling, porosity and rheological behavior, both in dry and swelled conditions.

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Aquasorbent guargum grafted hyperbranched poly (acrylic acid): A potential culture medium for microbes and plant tissues.

Carbohydr Polym

October 2019

Department of Polymer Science and Technology, University of Calcutta, 92 A.P.C. Road, Kolkata 700 009, West Bengal, India. Electronic address:

This study reports the synthesis of an unprecedented bio-based aquasorbent guargum-g-hyperbranched poly (acrylic acid); bGG-g-HBPAA by employing graft-copolymerization and "Strathclyde methodology" simultaneously in emulsion and its possible use as a sustainable nutrient bed for the effective growth of Anabaena cylindrica and Vigna radiata seedlings. The formation of bGG-g-HBPAA and the presence of hyperbranched architectures was confirmed from XRD, FTIR, C NMR, solubility, intrinsic viscosity, BET surface area/ pore size, SEM and rheology analyses. The synthesized grade with a branching percent of 65.

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A polyester with hyperbranched architecture as potential nano-grade antibiotics: An in-vitro study.

Mater Sci Eng C Mater Biol Appl

June 2019

Department of Polymer Science & Technology, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India. Electronic address:

A potential nanograde antibiotic with hyperbranched architecture was synthesized from melt esterification of poly(ethylene glycol) or PEG and Citric acid or CA with 1:1 mol composition. PEG of different molecular weights, c.a.

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A biosorbent for adsorption of soluble, inorganic Pb(II) was prepared through a photocrosslinking of a mixture of xanthan gum and guar gum at various mass ratios. The polysaccharide mixes were irradiated using UV A in presence of benzophenone. Chemical crosslinks were formed which led to a controlled swelling of the polysaccharide mix (swelling ratio <20%), referred as crosslinked hybrid in the text.

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Noble copolymers from xanthan gum (XG) and poly(acrylic acid) (PAA) were synthesised through surfactant mediated graft copolymerization. The copolymers were applied as a biosorbent for inorganic Hg(II) at higher concentration level (300ppm). The copolymers were characterized using different analytical techniques which showed, the grafting principally occurred across the amorphous region of XG.

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Polyelectrolytic aqueous guar gum for adsorptive separation of soluble Pb(II) from contaminated water.

Carbohydr Polym

September 2014

Department of Polymer Science and Technology, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India. Electronic address:

The article introduces the concept of homophase adsorption of soluble Pb(II) from contaminated water using aqueous guar gum (GG). The process appears to be extremely handy since it avoids hectic sample preparation and adsorbent recovery stages. The results show that, addition of only 1000 ppm GG removes 56.

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