Expansion of polystyrene using water as the blowing agent

Pallay, Jan; Kelemen, Peter; Berghmans, Hugo; Dommelen, Daniel Van

doi:10.1002/(sici)1439-2054(20000201)275:1<18::aid-mame18>3.0.co;2-3

Cited by 39 publications

(34 citation statements)

References 1 publication

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“…The final products are spherical PS beads with entrapped micrometer-scaled water droplets. The second method was developed by Pallay et al [20]. Instead of using emulsifiers, starch was used as a waterswellable phase.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and foaming of water expandable polystyrene–clay nanocomposites

Shen

Cao

Lee

2006

Polymer

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Section: Introductionmentioning

confidence: 99%

Synthesis and foaming of water expandable polystyrene–clay nanocomposites

Shen

Cao

Lee

2006

Polymer

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“…Other experimental studies have mainly focused on the effect of polymer properties as well as operating conditions on the cellular structure in foams. The cellular structure has been mostly investigated from experiments after the foam has been formed (Ramesh et al, 1994a,b;Pallay et al, 2000;Elmoutaouakkil et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Experimental observations and modelling relating to foaming and bubble growth from pentane loaded polystyrene melts

Tuladhar

Mackley

2004

Chemical Engineering Science

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“…Accordingly, the reason why the expansion ratio became E = 1.01% for Process A may be due to the fact that the water rapidly escaped through the polymer matrix in addition to smaller water content [19] [20].…”

Section: Effect Of Microencapsulation Methods On Water Content and Expmentioning

confidence: 99%

Preparation of Microcapsules Containing Water and Effect of Water Content on Expansion Behavior

Taguchi¹,

Saito²,

Oda³

2017

JEAS

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The research work was conducted in order to establish the optimum conditions for preparing the expanded polystyrene beads without harmful substances and was aimed at the preparation of the microcapsules containing water and investigation of the effect of the water content on the expansion behavior of microcapsules. Microcapsules were prepared with the suspension polymerization method and the suspension polymerization in parallel with interfacial polycondensation method using the multiple emulsion (W/O)/W and adding a few additives. With increasing the crosslinking agent concentration in the suspension polymerization method, the water content increased from R = 5.8 wt% (C T = 0) to R = 8.2 wt% (C T = 4 wt%) and then, decreased to R = 7.5 wt% (C T = 9.0 wt%), while the expansion ratio increased from E = 1.01 (C T = 0) to E = 2.20 (C T = 4 wt%) and then, decreased to E = 1.01 (C T = 7.0 wt%). With increasing the added amount of wax in the suspension polymerization method, the water content gradually increased from R = 2.5 wt% to R = 8.0 wt%, while the expansion ratio increased from E = 1.01 to E = 1.5 and then, decreased. The water content and the expansion ratio could be increased by conducting suspension polymerization in parallel with interfacial polycondensation reaction from R = 5.0 wt % to R = 8.0 wt % and from E = 1.01 to E = 1.3, respectively. The maximum expansion ratio of E = 2.58 in this work was obtained under the conditions of crosslinking agent concentration of C T = 4.0 wt %, the added amount of wax of 3.0 g, addition of Agarose and the expansion temperature of T = 150˚C.

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Expansion of polystyrene using water as the blowing agent

Cited by 39 publications

References 1 publication

Synthesis and foaming of water expandable polystyrene–clay nanocomposites

Synthesis and foaming of water expandable polystyrene–clay nanocomposites

Experimental observations and modelling relating to foaming and bubble growth from pentane loaded polystyrene melts

Preparation of Microcapsules Containing Water and Effect of Water Content on Expansion Behavior

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