02107nas a2200241 4500008004100000022001400041245009500055210006900150260007100219300001200290490000700302520123300309653002401542653002401566653002201590653001701612653003301629653001501662100001701677700002501694700001901719856012701738 2016 eng d a0091-403700aCrosslinked polymer embedded Cu/Ag for comparative drug adsorption and kinetics evaluation0 aCrosslinked polymer embedded CuAg for comparative drug adsorptio aKARL JOHANS GATE 5, NO-0154 OSLO, NORWAYbTAYLOR & FRANCIS AScJAN a285-2930 v653 a

Two-dimensional crosslinked polymer (2-DCP) was synthesized for evaluation of drug adsorption and kinetics thereof. Further, polymer properties were evaluated and parameters such as contact time and adsorption isotherm were also studied. Herein, contact time demonstrated 83% and 85% of drug loading in an acidic medium for two-dimensional crosslinked polymer embedded copper and silver (2-DCP-Cu/Ag), respectively in 24h. Initial 4h is the exponential drug loading period whereas drug loading was increased gradually after 4h. Salbutamol loading was well-fitted to Langmuir adsorption isotherm, which indicated a monolayer drug adsorption with respect to 2-DCP-Cu/Ag. Pseudo first- and pseudo second-order kinetics was evaluated to perceive the drug adsorption mechanism and equilibrium adsorption capacity. Monolayer drug adsorption with chemisorption mechanism was observed for 2-DCP-Cu/Ag. In addition to this, decomposition temperature of polymer was 440 and 325 degrees C while glass transition temperature of polymer was 280 and 200 degrees C before and after metal modification, respectively. (A=aqueous phase; B=organic phase; C=drug solution; D=drug loaded polymer; E=enlarged drug loaded polymer.) [GRAPHICS] .

10aAdsorption isotherm10aadsorption kinetics10acrosslink polymer10adrug loading10alangmuir adsorption isotherm10asalbutamol1 aMane, Sachin1 aPonrathnam, Surendra1 aChavan, Nayaku uhttps://library.ncl.res.in/content/crosslinked-polymer-embedded-cuag-comparative-drug-adsorption-and-kinetics-evaluation-101975nas a2200229 4500008004100000022001400041245014000055210006900195260007100264300001200335490000700347520109700354653002401451653002401475653001701499653001801516653002401534100001701558700002501575700001901600856012601619 2016 eng d a0091-403700aInterfacial tension approach toward drug loading with two-dimensional crosslinked polymer embedded gold: adsorption kinetics evaluation0 aInterfacial tension approach toward drug loading with twodimensi aKARL JOHANS GATE 5, NO-0154 OSLO, NORWAYbTAYLOR & FRANCIS AScJAN a168-1750 v653 a

Interfacial tension of drugs with hydrophilic polymer (A) embedded gold resulting into selective drug adsorption, which also affected the drug adsorption kinetics. Two-dimensional crosslinked polymer embedded gold was synthesized for drug loading application in an acidic buffer. Lower interfacial tension of pantoprazole sodium (B) revealed the exponential loading inversely loading was gradual for chloroquine (C) having more interfacial tension with adsorbent. Initial 2 h was the exponential adsorption period for a pantoprazole sodium whereas exponential adsorption begins after 12 h for a chloroquine. Monolayer drug adsorption was obtained because Langmuir adsorption isotherm was obeyed by both drugs. Moreover, pseudo first-and pseudo second-order kinetics was also evaluated which demonstrated that reactive sites of the adsorbent are homogeneous and drug adsorption mechanism is chemisorption and not the physisorption. Thermal analysis was evaluated to confirm the polymer thermostability and glass transition temperature during catalytic applications in thermal reactions.

10aAdsorption isotherm10aadsorption kinetics10adrug loading10adrug polarity10aInterfacial tension1 aMane, Sachin1 aPonrathnam, Surendra1 aChavan, Nayaku uhttps://library.ncl.res.in/content/interfacial-tension-approach-toward-drug-loading-two-dimensional-crosslinked-polymer-002131nas a2200253 4500008004100000022001400041245013100055210006900186260000900255300000700264490000700271520127900278653002401557653001001581653001801591653001701609653002301626653001501649100002201664700002201686700001901708700001801727856013201745 2019 eng d a1022-976000aAdsorptive removal of chromium(VI) using spherical resorcinol-formaldehyde beads prepared by inverse suspension polymerization0 aAdsorptive removal of chromiumVI using spherical resorcinolforma cJAN  a410 v263 a

The spherical cross-linked beaded polymers were prepared by condensation of resorcinol and formaldehyde in presence of tri-ethylamine by inverse suspension polymerization technique. The m-cresol, aniline, urea and thiourea were used as co-monomer and polyethylene glycol (PEG 400) was used as porogen. Paraffin oil was used as non-aqueous suspension agent. The polymeric spherical beads were prepared using various types of comonomers exhibiting range of particle size 77.62 to 158.84m at 90 degrees C and 300rpm for 4h. The resulting beads were analyzed by elemental analysis, particle size analysis and scanning electron microscope (SEM). The synthesized beads were used for the removal of Cr(VI) from aqueous solutions. A simple and sensitive solid phase extraction procedure was used for the determination of chromium at trace level by spectrophotometric method using 1,5-diphenylcarbazide reagent. The adsorption of Cr(VI) on the resorcinol-formaldehyde beads was monitored by energy-dispersive X-ray spectroscopy (EDX) analysis. The metal adsorption parameters such as contact time, pH, metal ion concentration and adsorbent dose were investigated. For Cr(VI), the maximum adsorption capacity was about 99% at pH2 for the resorcinol-formaldehyde beads obtained.

10aadsorption kinetics10aBeads10aChromium (VI)10aFormaldehyde10aInverse suspension10aResorcinol1 aMulani, Khudbudin1 aPatil, Vishwanath1 aChavan, Nayaku1 aDonde, Kamini uhttps://library.ncl.res.in/content/adsorptive-removal-chromiumvi-using-spherical-resorcinol-formaldehyde-beads-prepared-inverse