A novel technology to manufacture biodegradable polylactide bead foam products

Nofar, Mohammadreza; Ameli, Amir; Park, Chul

doi:10.1016/j.matdes.2015.06.052

Cited by 116 publications

(75 citation statements)

References 40 publications

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“…Crystalline nucleation and growth are highly influential in this process, when it takes place at the vicinity of the crystallization temperature [5,13]. The formation of a network of nucleated crystals during foaming and stabilization increases the expansion ratio by minimizing gas loss and cell coalescence [1,6,14,15]. These benefits can be accomplished through careful choice of processing conditions, and addition of nucleating agents, such as talc and nanosilica [1,16].…”

Section: Introductionmentioning

confidence: 99%

Transition from microcellular to nanocellular PLA foams by controlling viscosity, branching and crystallization

Tiwary

Park

Kontopoulou

2017

European Polymer Journal

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Section: Introductionmentioning

confidence: 99%

Transition from microcellular to nanocellular PLA foams by controlling viscosity, branching and crystallization

Tiwary

Park

Kontopoulou

2017

European Polymer Journal

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“…developed a PLA bead foam with α/α′ double crystal structure for sintering purposes. And, the difference between the two melting temperatures was about 10 °C . It should be noted that sintering process window depended on the temperature difference.…”

Section: Introductionmentioning

confidence: 96%

Effect of stereocomplex crystal on foaming behavior and sintering of poly(lactic acid) bead foams

Liu

Yang

2018

Polymer International

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Poly(lactic acid) (PLA) bead foams with stereocomplex (Sc)/α crystals were prepared by melt mixing and solid‐state foaming methods, independently. A systematic method was applied to evaluate the effect of Sc/α crystals on rheological properties and foaming behavior of PLA. The results indicated that the presence of Sc/α crystals affected the foaming behavior and the melt elasticity of PLA. Hence, the enhanced rheological properties of PLA had a significant effect on controlling the foaming behavior. As a result, PLA bead foam with an expansion ratio of 24‐fold was developed. And, the presence of Sc/α crystals could also facilitate the sintering behavior and broaden the sintering process window. Sintered PLA bead foam with finer cellular morphology and strong sintering effect was obtained by inducing an appropriate Sc/α crystalline structure. © 2018 Society of Chemical Industry

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“…Bead foam is a kind of the polymeric foam with the extensive application. Compared to extruded polymer foam and injection molded polymer foam, the bead foam has greater advantages in the control expansion ratio and dimensional, preparation of objects with complex three‐dimensional shape . Currently, there are mainly four kinds of bead foam was established in the market or laboratory, namely expandable polystyrene (EPS), expanded polypropylene (EPP), expanded polylactide (EPLA), and expanded thermoplastic polyurethane (ETPU).…”

Section: Introductionmentioning

confidence: 99%

Investigation of the effect of foaming process parameters on expanded thermoplastic polyurethane bead foams properties using response surface methodology

Zhou

Wang

2018

J of Applied Polymer Sci

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Expanded thermoplastic polyurethane (ETPU) bead foams were fabricated by batch foaming with supercritical CO2 as blowing agent. On the basis of single factor investigation, the response surface methodology based on Box‐Behnken Design was used to investigate the influences of saturation pressure, temperature, and soaking time and their interactions on foaming behavior of ETPU. The results showed that saturation temperature was the most significant parameter affecting the expansion ratio, shrinkage ratio, and cell morphology of ETPU. Moreover, there was an interaction effect between saturation temperature and soaking time, wherein the expansion ratio of ETPU was more sensitive to change of soaking time at higher temperature. As the soaking time increased, the shrinkage of ETPU increased firstly and then leveled off, and the cell diameter decreased significantly. By applying the response surface methodology optimization, ETPU bead foams with final expansion ratio of 8.04, mean cell diameter of 74.2 μm, and average cell density of 1.46 × 107cell/cm3 can be obtained while the optimum conditions at saturation pressure of 15 MPa, saturation temperature of 100 °C and soaking time for 60 min. In addition, the dual melting peak of ETPU characteristics demonstrated that it is suitable for steam‐chest molding technology. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46327.

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A novel technology to manufacture biodegradable polylactide bead foam products

Cited by 116 publications

References 40 publications

Transition from microcellular to nanocellular PLA foams by controlling viscosity, branching and crystallization

Transition from microcellular to nanocellular PLA foams by controlling viscosity, branching and crystallization

Effect of stereocomplex crystal on foaming behavior and sintering of poly(lactic acid) bead foams

Investigation of the effect of foaming process parameters on expanded thermoplastic polyurethane bead foams properties using response surface methodology

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