Bisphenol A blends

Fei B, Cheng C, Peng SW, Zhao XJ, Wang XH, Dong LS (2004) FTIR study of poly (propylene carbonate)/bisphenol A blends. Polym bit 53 2092-2098... 

Figure 8.2 Schematic phase diagrams for thermoplastic-epoxy monomer (diglycidyl ether of bisphenol A) blends, (CPC = cloud point curve, and VC = vitrification curve), (a) and (b) UCST (upper critical solution temperature) behaviour for PPE and PEI (respectively) - DGEBA n = 0.15 (c) LCST (lower critical solution temperature) behaviour for PES-DGEBA y n = 0.15. (Pascault and Williams, 2000 - Copyright 2001. Reprinted by permission of John Wiley Sons Inc.)...

Figure 2.4 The viscosity of bisphenol F/bisphenol A blends. = DER 354 O = DER 354LV. DER is the registered trademark of Dow Epoxy Resins. Reproduced with permission from the Dow Chemical Company, Midland, MI, USA...

An Jingjing, Cao Xinyn, Ma Yongmei, et al. Preparation and characterization of polyamide 6 6/poly(hydroxyl ether of bisphenol A) blends withont compatibihzer. J. Appl. Polym. Sci. 131 no. 13 (2014) 40437. 

LIX1 Li, X.D. and Goh, S.H., Specific interactions and phase behavior of ternary poly(2-vinylpyridine)/poly(Y-viiwl-2-pyrrolidone)/bisphenol-A blends, J. Polym. Sci. Part B Polym. Phys., 40, 1125,2002. 

Salim NV, Hameed N, Gno Q. Competitive hydrogen bonding and self-assembly in poly(2-vinyl pyridine)-block-poly(methyl methacrylate)/poly(hydroxyether of bisphenol A) blends. J Polym Sci B 2009 47(19) 1894-1905. 

ABS can be blended with bisphenol A polycarbonate resins to make a material having excellent low temperature toughness. The most important apphcation of this blend is for automotive body panels. 

Polycarbonate (PC) Resins. Polycarbonates (qv) based on bisphenol A are sold in large quantities. Other bisphenols can be incorporated, but do not give the same favorable combination of properties and cost (82). Small quantities of PC based on tetramethylbisphenol A are used as blending resins (83) and polyester carbonate copolymers are used for appHcations requiring heat-deflection temperatures above those of standard PC resins (47). 

McNeill and Basan [151] studied the thermal degradation of blends of PVC with bisphenol-A polycarbonate. The structure of bisphenol-A polycarbonate is given in Eq. (42). 

Birley, A.W. and Chen, X.Y., A preliminary study of blends of bisphenol A polycarbonate and poly (ethylene terephtalate), Brit. Polym. J., 17, 297, 1985. 

Blends of enzymatically synthesized poly(bisphenol-A) and poly(p-r-butylphenol) with poly(e-CL) were examined. FT-IR analysis showed the expected strong intermolecular hydrogen-bonding interaction between the phenolic polymer with poly(e-CL). A single 7 was observed for the blend, and the value increased as a function of the polymer content, indicating their good miscibility in the amorphous state. In the blend of enzymatically synthesized poly(4,4 -oxybisphenol) with poly(e-CL), both polymers were miscible in the amorphous phase also. The crystallinity of poly(e-CL) decreased by poly(4,4 -oxybisphenol). 

Shell s Epon 828, a blend of oligomers of diglycidyl ether of bisphenol A (DGEBA, n=0), was used. 

The most-common polycarbonates are based on bisphenol A (see Figure 4.75) but, more recently, heat resistant grades were launched based on other bisphenols, possibly blended with bisphenol A. 

A mjmber of blends were prepared from a bisbenzocyclobutene monomer (BCB) and various bisdienophiles (Kerimid 353 dicyanates such as bisphenol A dicyanate, tetramethylbisphenol F dicyanate and thiodiphenol dicyanate and bisphenyl-acetylenes ... 

All the materials in this study are commercially available and were used as received. The compositions of the mixtures are given in Table I. The components can be described as follows Resin is a proprietary blend of acrylated epoxy resins with an number average molecular weight (Mn) of "4800, based on acrylated diglycidyl bisphenol A, DGEBAcr is the diacrylate derivative of diglycidyl bisphenol A, IBOA is isobomyl acrylate, TMPTA is trimethyloltriacrylate and DMPA is 2,2-dimethoxy-2-phenyl acetophenone. 

Crystallization behavior in miscible blends containing crystallizable components has been extensively studied [174-180]. Generally, when a crystallizable component is mixed with an amorphous component its melting temperature goes down and its crystallinity lowers. The same trend has been reported for blends with intercomponent hydrogen bonding such as PCL/STVPh [181], PCL/poly(hydroxyl ether of bisphenol A) [182] and phenoxy resin/PEO [183]. 

The blend of poly(bisphenol A carbonate)-(poly(caprolactone) PC-PCL is particularly unusual in that both polymers are capable of crystallization and FT-IR has been used to study the state of order in these blends as a function of the method of preparation 254,255). In this case, PCL is a macromolecular plasticizer for PC. The PCL becomes progressively less crystalline as the concentration of PC increases. PC is amorphous if the blend is cast from methylene chloride but semicrystalline if cast from tetrahydrofuran. When PC in the pure form is exposed to acetone, it will not crystallize, but in the blend, exposure of acetone causes the PC to crystallize which emphasizes the additional mobility of the PC in the blend. 

Actually, ABS can be considered as an impact modifier for PC. PC/ABS blends have been compatibilized with both maleic anhydride (MA)-grafted poly(propylene) (PP) and a solid epoxy resin of the bisphenol A type. Both compatibilizers are effective for formulations of an ABS content up to 30%. The the impact strength of the compatibilized blends was close to that of PC. However, above 40% ABS content, the impact strength decreases significantly (19). 

K.H. Pawlowski, B. Schartel, M.A. Fichera, and C. Jager, Flame retar-dancy mechanisms of bisphenol A bis(diphenyl phosphate) in combination with zinc borate in bisphenol a polycarbonate/acrylonitri-le-butadiene-styrene blends, Thermochim. Acta, In Press, Accepted Manuscript, 2009. 

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