Multicomponent latex IPN materials. I. Morphology control

Hu, Rundong; Dimonie, Victoria L.; El‐Aasser, M. S.; Pearson, Raymond A.; Hiltner, A.; Mylonakis, S. G.; Sperling, L. H.

doi:10.1002/(sici)1099-0518(199708)35:11<2193::aid-pola10>3.0.co;2-9

Cited by 12 publications

References 3 publications

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Interpenetrating Polymer Networks

Sperling

2004

Encyclopedia of Polymer Science and Technology

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An interpenetrating polymer network, IPN, is a combination of two polymers in network form, at least one of which is synthesized and/or cross‐linked in the immediate presence of the other (L. H. Sperling, Interpenetrating Polymer Networks and Related Materials, Plenum Press, New York, 1981). An IPN is distinguished from other multipolymer combinations, such as polymer blends, blocks, and grafts, in two ways: ( 1 ) an IPN swells, but does not dissolve in solvents; and ( 2 ) creep and flow are suppressed. This article discusses synthesis, morphology, glass transitions, and mechanical behavior of IPNs, and outlines known and proposed applications of these materials. Some applications of note include sound and vibration damping, biomedical applications, natural products and renewable resources, tough and impact‐resistant materials, etc.

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Interpenetrating Polymer Networks

Sperling

2004

Encyclopedia of Polymer Science and Technology

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Styrene‐ethylene/butylene‐styrene blends for improved constrained‐layer damping

Öborn¹,

Bertilsson²,

Rigdahl³

2001

J of Applied Polymer Sci

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ABSTRACT:The influence on the adhesion to some metal surfaces and the damping properties of various modified styrene-ethylene/butylene-styrene (SEBS) materials was evaluated. Modification of the different phases of the SEBS with resins was shown to have a large effect on the damping properties of the polymers, which were evaluated by dynamic mechanical analysis (DMA). A small amount of maleic anhydride grafted onto the EB block was found to lead to a significant improvement in the adhesion of the polymer to some metal surfaces without affecting the damping properties of the polymers. The results of the DMA tests on the polymers were used to calculate the composite loss factor (CLF) for a steel laminate, which consisted of two steel plates with a polymeric layer in between, according to the theory proposed by Ross, Ungar, and Kerwin. The calculated results were compared with the measured CLFs determined in vibrating beam tests (VBTs). The agreement between the calculated and measured values was quite fair, provided that the DMA values used for the calculations were recalculated to the actual higher frequencies used in the VBTs, using the timetemperature superposition principle.

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Energy‐damping behaviors of poly(methyl acrylate‐co‐divinylbenzene) microspheres coated with a porous nickel–phosphorus layer

Ng¹,

Hong²

2004

J Polym Sci B Polym Phys

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Hybrid microspheres of poly(methyl acrylate-co-divinylbenzene) (PMADVB) with a thin and porous nickel-phosphorus (Ni-P) alloy layer were prepared via suspension polymerization and electroless nickel plating. The characterization of pristine and nickel-coated microspheres was carried out with a differential scanning calorimeter and a scanning electron spectroscope equipped with an energy-dispersive system. The glass-transition range of Ni-P-coated PMADVB was broadened and extended in the higher temperature direction. This effect allowed the PMADVB network to embrace more diversified energy states of the segment motion, this being a desired feature for damping sound waves. The low-frequency (100 -1000-Hz) sound absorption behavior of the microspheres was tested with a sound attenuation kit. Besides the testing of their low-frequency damping performance, an investigation into the ultrasonic-wave (ϳ35 kHz) absorption feature of the microspheres was conducted through chemical means; that is, the attenuation to the ultrasonic wave with respect to the unprotective situation was assessed through the chemisorption extent of copper ions on a biomass adsorbent. The Ni-P deposition layer was found to augment the damping capacity of the polymer network. The alloy layer was determined to cause an expansion of the glass-transition range of PMADVB and its wave-scattering capability because this layer was made up of submicrometer metallic grains. In this work, the particulars of the metal-polymer interactions were associated with a core-shell structure. The metal outer layer was thought to create a spherical temperature field inside the PMADVB network, and concerted motions of the polymer segments resulted.

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Multicomponent latex IPN materials. I. Morphology control

Cited by 12 publications

References 3 publications

Interpenetrating Polymer Networks

Interpenetrating Polymer Networks

Styrene‐ethylene/butylene‐styrene blends for improved constrained‐layer damping

Energy‐damping behaviors of poly(methyl acrylate‐co‐divinylbenzene) microspheres coated with a porous nickel–phosphorus layer

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