Polyimine ether

Their polymer, a polyimine ether, is shown below. It contained a four-ring... 

The presence of ether linkages in the polymer molecule imparts chain flexibility, lowers glass transition temperature, and enhances solubility while maintaining the desired high temperature characteristics [192]. Recently, polyether imines were prepared by the reaction of different diamines with 4,4 -[l,4-phenylene bis(oxy)] bisbenzaldehyde [184]. The polymers synthesized by the solution method were yellow to white in color and had inherent viscosities up to 0.59 dl/g in concentrated H2SO4. Some of these polyimines can be considered as... 

Pillared polyethers and polyimines have been also described, which present sorbent and ion exchange properties [7, 56]. Immobilization of crown ethers and diaza crown ethers has been carried out with the bisphosphonate pillars strategy by using the co-precipitation synthesis [44, 58]. Exchange re-... 

Dielectric constant data have been reported on several unreinforced polymers, including polyimides [19-21], silicones [22], epoxy resins [23], polyurethanes [23], polyaniline nanofibers [16, 17], zirconium nanocomposites [24], cross-linked polyethylene [15], low-density polyethylene [22], doped polyimines [19], polyimide-3-zirconium propoxide nanocomposites [24], poly linu-naphthyl ether [30], and cross-linked polyethylene-polyethylene polyacrylate acid blends [15]. 

Tg measurements have been performed on many other polymers and copolymers including phenol bark resins [71], PS [72-74], p-nitrobenzene substituted polymethacrylates [75], PC [76], polyimines [77], polyurethanes (PU) [78], Novolac resins [71], polyisoprene, polybutadiene, polychloroprene, nitrile rubber, ethylene-propylene-diene terpolymer and butyl rubber [79], bisphenol-A epoxy diacrylate-trimethylolpropane triacrylate [80], mono and dipolyphosphazenes [81], polyethylene glycol-polylactic acid entrapment polymers [82], polyether nitrile copolymers [83], polyacrylate-polyoxyethylene grafts [84], Novolak type thermosets [71], polyester carbonates [85], polyethylene naphthalene, 2,6, dicarboxylate [86], PET-polyethylene 2,6-naphthalone carboxylate blends [87], a-phenyl substituted aromatic-aliphatic polyamides [88], sodium acrylate-methyl methacrylate multiblock copolymers [89], telechelic sulfonate polyester ionomers [90], aromatic polyamides [91], polyimides [91], 4,4"-bis(4-oxyphenoxy)benzophenone diglycidyl ether - 3,4 epoxycyclohexyl methyl 3,4 epoxy cyclohexane carboxylate blends [92], PET [93], polyhydroxybutyrate [94], polyetherimides [95], macrocyclic aromatic disulfide oligomers [96], acrylics [97], PU urea elastomers [97], glass reinforced epoxy resin composites [98], PVOH [99], polymethyl methacrylate-N-phenyl maleimide, styrene copolymers [100], chiral... 

DSC has been used to measure T on a variety of polymers including naphthalate copolymers [111,112], polyethylene terephthalate-5-nitrosophthalic acid copolymers [113], propene-pentene copolymers [114], 4-hydroxy benzoic acid-2-hydroxy-6-naphthoic acid copolymers [115], fluorinated perfluorocyclo butylenes [116], PET [117], polythioether ether ketones [14,104], polyvanillylidiene, alkyl/aryl phosphate esters [118], poly(L-lactic acid-poly(e-caprolactone) [119], benzylated waste pulp-L-lactic acid copolymers [120], PET - poly-1,4 butylene succinate [121], polyarylate-polytrimethylene terephthalate [122], polyimines [77], PVOH [123, 124], various Nylons [125]. 

Polyethers are known to incorporate electrolytes, thereby becoming ionic conductors (5). Thus, an original incentive for this investigation was to determine whether large polyether chains could be anchored to the layers producing, by electrolyte complexing, stable ionic conductors of unusual structure. The incorporation of the alk i metal salts arises from much the same forces which are operative in crown ethers (6-7). Therefore, a further incentive was to attempt to cross-link the zirconium phosphate layers with polyether chains to create crown ether-like structures. In this paper we will discuss these polyether derivatives of zirconium phosphate and also their polyimine analogues. 

---