01918nas a2200205   4500008004100000022001400041245007300055210006900128260006700197300001000264490000800274520119700282653001501479653001701494653002101511100002501532700002301557700002501580856010701605       2016                        eng d  a0021-899500aToughening of epoxy novolac resin using cardanol based flexibilizers0 aToughening of epoxy novolac resin using cardanol based flexibili  a111 RIVER ST, HOBOKEN 07030-5774, NJ USAbWILEY-BLACKWELLcAPR  a433180 v1333 a<p>In this work, two different cardanol based epoxies (Cardolite NC-514 and Cardanol NC-547) were employed as flexibilizers to toughen an epoxy novolac resin namely, poly[(phenylglycidyl ether)-co-formaldehyde] (PPGEF). 4,4-Diamino-3,3-dimethyl dicyclohexyl methane (BMCHA) was used as a curing agent. Differential scanning calorimetry and dynamic mechanical thermal analysis of the composites showed a gradual decrease in glass transition temperatures (T-g) with increase in cardolite content confirming the incorporation of flexible moieties into the brittle resin matrix. Improvement in toughening of PPGEF/Cardolite composites was manifested by increase in the izod impact strength of both the composites. The tensile strength increased marginally for composites with increasing amount of Cardolite NC-514 but decreased for the composites containing Cardolite NC-547. This was attributed to the lack of rotational motion in the chain due to close proximity of rigid phenyl rings in NC-547. SEM of the cryo-fractured surfaces of composites showed good compatibility between PPGEF and cardanol based flexibilizers. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43318.</p>10acomposites10acrosslinking10aglass transition1 aGour, Rajeshwari, S.1 aKodgire, Vivek, V.1 aBadiger, Manohar, V.  uhttps://library.ncl.res.in/content/toughening-epoxy-novolac-resin-using-cardanol-based-flexibilizers-101632nas a2200133   4500008004100000245007300041210006900114260000800183520113000191100002501321700002301346700002501369856010401394       2017                        eng d00aFlexible epoxy novolac coatings: use of cardanol-based flexibilizers0 aFlexible epoxy novolac coatings use of cardanolbased flexibilize  cFEB3 aFlexible epoxy novolac coatings were developed by reacting an epoxy novolac resin, Poly[(phenylglycidyl ether)-co-formaldehyde] (PPGEF) with an amine curing agent, 4,4′-diamino-3,3′-dimethyldicyclohexyl methane (BMCHA), cardanol based reactive diluent (Cardolite NC-513) and two different cardanol-based flexibilizers (Cardolite NC-514 and Cardolite NC-547). The flexibilizer content was varied from 5 to 10% by weight of the resin. These resins were coated onto the stainless steel panels and tested for their gloss, cross-hatch adhesion, falling weight impact resistance, flexibility, abrasion, scratch hardness, solvent scrub resistance, and chemical resistance. The thermo-mechanical properties of these coatings were determined by TGA, DSC, DMTA, and tensile strength measurements. The cryofractured specimens were subjected to SEM analysis. The influence of structural differences of two flexibilizers on the coating properties was investigated. These coatings exhibited excellent properties and have great potential in industrial applications. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44920.1 aGour, Rajeshwari, S.1 aRaut, Kundalik, G.1 aBadiger, Manohar, V.  uhttps://library.ncl.res.in/content/flexible-epoxy-novolac-coatings-use-cardanol-based-flexibilizers