Polystyrene, epoxy ether terminated

This work deals with the synthesis of epoxy ether terminated polystyrene macromers and their copol3nnerization with ethylene oxide. The purpose of this work is to obtain a unique hydrophilic-hydrophobic pol3nner, which may be used as a good emulsifying agent, electrostatic charge reducer, or compatib-lizer for pol3nner blends. 

Figure 1 shows GPC curves of the polystyrenes terminated with epichloro-hydrin and with methyl alcohol. It can be seen that molecular weight distribution of the polystyrene terminated with methyl alcohol is quite narrow = 1.05) whereas, there appears a shoulder in the GPC curve of the polystyrene terminated with epichlorohydrin, or so called epoxy ether terminated macromer, and so the polydispersity is wider 1.1-1.2). The... 

Different kinds of solvents also exert an influence on the PSep% of the macromer formed. Table 2 shows that cyclohexane seems to be the best solvent for the synthesis of macromer. This may be attributed to the fact that cyclohexane is a comparatively worse solvent than benzene or toluene for polystyrene, which exhibits a random coil form in cyclohexane and more likely Includes the ion pair within the coil. This condition is favorable for the formation of epoxy ether terminated polystyrene. 

HMX HMX HMX HMX HMX HMX HMX HMX HMX HMX HMX HMX HNS NTO NTO/HMX NTO/HMX NTO/HMX PETN PETN PETN PETN PETN PETN PETN PETN PETN PETN RDX RDX RDX RDX RDX RDX RDX RDX RDX RDX RDX RDX RDX TATB/HMX Cariflex (thermoplastic elastomer) Hydroxy-terminated polybutadiene (polyurethane) Hydroxy-terminated polyester Kraton (block copolymer of styrene and ethylene-butylene) Nylon (polyamide) Polyester resin-styrene Polyethylene Polyurethane Poly(vinyl) alcohol Poly(vinyl) butyral resin Teflon (polytetrafluoroethylene) Viton (fluoroelastomer) Teflon (polytetrafluoroethylene) Cariflex (block copolymer of butadiene-styrene) Cariflex (block copolymer of butadiene-styrene) Estane (polyester polyurethane copolymer) Hytemp (thermoplastic elastomer) Butyl rubber with acetyl tributylcitrate Epoxy resin-diethylenetriamine Kraton (block copolymer of styrene and ethylene-butylene) Latex with bis-(2-ethylhexyl adipate) Nylon (polyamide) Polyester and styrene copolymer Poly(ethyl acrylate) with dibutyl phthalate Silicone rubber Viton (fluoroelastomer) Teflon (polytetrafluoroethylene) Epoxy ether Exon (polychlorotrifluoroethylene/vinylidine chloride) Hydroxy-terminated polybutadiene (polyurethane) Kel-F (polychlorotrifluoroethylene) Nylon (polyamide) Nylon and aluminium Nitro-fluoroalkyl epoxides Polyacrylate and paraffin Polyamide resin Polyisobutylene/Teflon (polytetrafluoroethylene) Polyester Polystyrene Teflon (polytetrafluoroethylene) Kraton (block copolymer of styrene and ethylene-butylene)... 

Amine-cured epoxy resins are extensively used as structural matrices in composite manufacture and as such the improvement of their mechanical properties is very desirable. As in the case of polystyrene the addition of a rubber phase provides an energy dissipation mechanism below and this increases the toughness of the overall material. Carboxy-terminated butadiene acrylonitrile (CTBN) is initially soluble in the reaction mixture of digylcidyl ether of bisphenol A (DGEBA) and the low-temperature cure system triethylenetetra-amine (TFTA) ... 

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