01768nas a2200229   4500008004100000022001400041245009600055210006900151260010600220300001000326490000700336520090900343653001401252653001501266653001701281653003001298653001901328100001701347700002501364700001901389856013001408       2014                        eng d  a0014-305700aSynthesis and characterization of hypercrosslinked hydroxyl functionalized co-polymer beads0 aSynthesis and characterization of hypercrosslinked hydroxyl func  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcOCT  a46-580 v593 a<p>Hydroxyl functionalized beaded copolymers were synthesized from 2-hydroxy ethyl methacrylate by suspension polymerization using two different crosslinking agents (EDMA, DVB) and diluents (1,1,2,2-tetrachloroethane, 1,2-dichlorobenzene). Microporous beads with high surface area were successfully synthesized and characterized by different techniques. Maximum surface area obtained was 564 m(2)/g bearing uniform, spherical as well as non-aggregation images of beads. Thermal properties such as DTG and DSC reveal that, type of crosslinker (flexible/rigid) is major while its concentration is minor parameter that affect decomposition and softening temperature of copolymer. Swelling ratio of copolymer beads was examined as a function of crosslinker and crosslink density. Swelling behavior is in accordance with copolymer-solvent interaction parameter. (C) 2014 Elsevier Ltd. All rights reserved.</p>10aCopolymer10aMorphology10asurface area10aSuspension polymerization10aSwelling ratio1 aMane, Sachin1 aPonrathnam, Surendra1 aChavan, Nayaku  uhttps://library.ncl.res.in/content/synthesis-and-characterization-hypercrosslinked-hydroxyl-functionalized-co-polymer-beads-002420nas a2200241   4500008004100000022001400041245017000055210006900225260000800294300001200302490000700314520153400321653002401855653001301879653002001892653002501912653003001937100002401967700001701991700002502008700002002033856012502053       2023                        eng d  a0959-810300aHighly interconnected porous monolithic and beaded polymers using high internal phase emulsion polymerization: tuning porous architecture through synthesis variables0 aHighly interconnected porous monolithic and beaded polymers usin  cAPR  a451-4660 v723 a<p>
	Open porous polymeric materials have gained popularity due to their exceptional properties and applications in tissue engineering scaffolds, drug delivery, enzyme immobilization and catalysis support. This study developed a novel two-stage approach to create networked, crosslinked poly(2-hydroxyethyl methacrylate-co-N,N'-methylenebisacrylamide) HEMA-MBA beads. The first part involves producing an oil-in-water-in-oil high internal phase emulsion (HIPE). This is followed by suspension polymerization using a redox initiator pair. In this study, a mixed surfactant combination with low and high hydrophilicity-lipophilicity balance surfactants was identified and successfully utilized to prepare a stable oil-in-water-in-oil HIPE. The effect of crosslinker concentration (i.e. crosslink density), surfactant concentration and monomer-to-porogen ratio on pore architecture and surface area were successfully evaluated. In addition, a new protocol was developed to synthesize HEMA-MBA monoliths using an oil-in-water HIPE method at ambient temperature using a redox initiator pair. The effect of crosslink density and oil phase on pore architecture and surface area was evaluated. Key variables affecting the morphology of porous HEMA-MBA beads and monoliths were identified and quantified, allowing future development of porous HEMA-based polymer beads and monoliths with tunable morphologies which are suitable for numerous applications, especially in the biomedical field. (c) 2022 Society of Industrial Chemistry.</p>
10aHIPE polymerization10aporosity10aporous polymers10aredox polymerization10aSuspension polymerization1 aPonrathnam, Timothy1 aBehere, Isha1 aPonrathnam, Surendra1 aIngavle, Ganesh  uhttps://library.ncl.res.in/content/highly-interconnected-porous-monolithic-and-beaded-polymers-using-high-internal-phase