Studies on Ionically Crosslinked Polystyrene

Ide, Fumio; Kodama, Tsuneo; Hasegawa, Akira

doi:10.1295/koron1944.27.58

Cited by 2 publications

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“…4 (method B) and experiment no. 6 (method A) in Table I, respectively. The Zn and Cd salts will be denoted hcreafter by (E1LIP-)2Zn and (EMP-)&d, respectively (EMP-means ERilP residue).…”

Section: Preparation Of Compound Imentioning

confidence: 99%

Preparation and copolymerization of divalent metal salts of ethylene glycol–methacrylate–phthalate

Matsuda

Miyoshi

1973

J of Applied Polymer Sci

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SynopsisDivalent metal salts of ethylene glycol-methacrylate-phthalate (EMP) were prepared by the reaction of EhlP and divalent metal ions in aqueous solution. The divalent metal salts obtained, except for the P b salt, have melting points which decrease in the order of Ca > Ba > Mg > Zn > Cd salt. The Zn and Cd salts are fairly soluble in most organic solvents. Therefore, the Zn salt and Cd salt were selected for the copolymerization with MMA, styrene (St), and hydroxyethyl methacrylate (HEMA). In the copolymerization, the rates of copolymerization increased markedly as the concentration of metal salts increased. Moreover, the systems containing MMA copolymerized more rapidly than those containing St. As for the physical properties of the copolymers obtained, compressive strength and Rockwell hardness were improved by introducingmetal salts into the polymers; and heat distortion temperature and tensileand flexuralstrengths were also improved by selecting the most suitable concentration of metal salts according to the species of metal salts and vinyl monomers. The TGA and the boiling water resistance of the copolymers were also discussed.

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“…4 (method B) and experiment no. 6 (method A) in Table I, respectively. The Zn and Cd salts will be denoted hcreafter by (E1LIP-)2Zn and (EMP-)&d, respectively (EMP-means ERilP residue).…”

Section: Preparation Of Compound Imentioning

confidence: 99%

Preparation and copolymerization of divalent metal salts of ethylene glycol–methacrylate–phthalate

Matsuda

Miyoshi

1973

J of Applied Polymer Sci

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“…Formation of micelles reduces the effectiveness of the block or graft copolymer as a compatibilizer significantly 6. Another method is to add a polymer with functional groups which can generate a block or graft copolymer during blend preparation via an in situ interfacial reaction 17–21. This approach, known as “reactive compatibilization,” has been implemented in a number of commercial products in recent years 5, 17–23…”

Section: Introductionmentioning

confidence: 99%

Phase morphologies and mechanical properties of high‐impact polystyrene (HIPS) and polycarbonate blends compatibilized with polystyrene and polyarylate block copolymer

Ohishi

Ikehara

Nishi

2001

J of Applied Polymer Sci

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Phase morphology and mechanical properties of blends of high-impact polystyrene (HIPS) and polycarbonate (PC) blends compatibilized with a polystyrene (PS) and polyarylate (PAr) (PS-PAr) block copolymer were investigated. Over a broad range of composition from 50/50 through 30/70, HIPS/PC blends formed cocontinuous structures induced by the flow during the extrusion or injection-molding processes. These cocontinuous phases had heterogeneity between the parallel and perpendicular directions to the flow. The micromorphology in the parallel direction to the flow consisted of stringlike phases, which were highly elongated along the flow. Their longitudinal size was long enough to be longer than 180 m, while their lateral size was shorter than 5 m, whereas that in the perpendicular direction to the flow showed a cocontinuous phase with regular spacing due to interconnection or blanching among the stringlike phases. The PS-PAr block copolymer was found to successfully compatibilize the HIPS/PC blends. The lateral size of the stringlike phases could be controlled both by the amount of the PS-PAr block copolymer added and by the shear rate during the extrusion or injection-molding process without changing their longitudinal size. The HIPS/PC blend compatibilized with 3 wt % of the PS-PAr block copolymer under an average shear rate of 675 s Ϫ1 showed a stringlike phase whose lateral size was reduced almost equal to the rubber particle size in HIPS. The tensile modulus and yield stress of the HIPS/PC blends could be explained by the addition rule of each component, while the elongation at break was almost equal to that of PC. These mechanical properties of the HIPS/PC blends can be explained by a parallel connection model independent of the HIPS and PC phases. On the other hand, the toughness factor of the HIPS/PC blends strongly depended on the lateral size of the stringlike phases and the rubber particle size in the HIPS. It was found that the size of the string phases and the rubber particle should be smaller than 1.0 m to attain a reasonable energy absorbency by blending HIPS and PC.

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Studies on Ionically Crosslinked Polystyrene

Cited by 2 publications

References 0 publications

Preparation and copolymerization of divalent metal salts of ethylene glycol–methacrylate–phthalate

Preparation and copolymerization of divalent metal salts of ethylene glycol–methacrylate–phthalate

Phase morphologies and mechanical properties of high‐impact polystyrene (HIPS) and polycarbonate blends compatibilized with polystyrene and polyarylate block copolymer

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