Oriented foaming of polystyrene with supercritical carbon dioxide for toughening
Identifieur interne : 000067 ( PascalFrancis/Corpus ); précédent : 000066; suivant : 000068Oriented foaming of polystyrene with supercritical carbon dioxide for toughening
Auteurs : Jin-Biao Bao ; TAO LIU ; LING ZHAO ; Guo-Hua Hu ; XIARAN MIAO ; XIUHONG LISource :
- Polymer : (Guildford) [ 0032-3861 ] ; 2012.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
Polystyrene (PS) foams with isotropy cell morphology and oriented cell morphology were prepared to investigate the relationship between the cell morphologies and the mechanical properties (tensile and impact properties). For the isotropy cell morphologies, the tensile strength, tensile modulus and impact strength of PS foams all increase with the increase of relative density. When the relative density is constant, the cell size does not affect the tensile strength and modulus but has a modest effect on the impact strength. The solid area (cell walls) fraction on the fracture-surface and the cell walls finely dispersed by the bubbles are the main reasons for the toughening of isotropy PS foams. For oriented foams, the cell morphologies oriented perpendicular to the impact direction could significantly enhance the toughness of PS foams. The oriented bubbles and the matrix perpendicular to the fracture propagation direction are expected to absorbed large impact energy during the fracture process and make sample more ductile. The impact strength of the highly oriented PS foam in this work is about 1.5 times that of the unfoamed one while its relative density is 0.3. Small angle X-ray scattering (SAXS) measurements indicate that the molecular chains can be oriented by the shearing of the bubbles by oriented foaming, which leads to the improvement of tensile strength along oriented direction. In addition, the cells oriented parallel to the impact direction result in the poor impact properties.
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Pour connaître la documentation sur le format Inist Standard.
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Format Inist (serveur)
NO : | PASCAL 13-0160413 INIST |
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ET : | Oriented foaming of polystyrene with supercritical carbon dioxide for toughening |
AU : | BAO (Jin-Biao); TAO LIU; LING ZHAO; HU (Guo-Hua); XIARAN MIAO; XIUHONG LI |
AF : | State Key Laboratory of Chemical Engineering, East China University of Science and Technology/Shanghai 200237/Chine (1 aut., 2 aut., 3 aut.); Laboratory Reactions and Process Engineering, CNRS-Nancy Université-INPL-ENSIC, 1 rue Grandville, BP 20451/54001 Nancy/France (4 aut.); Institut Universitaire de France, Maison des Universités, 103 Boulevard Saint-Michel/75005 Paris/France (4 aut.); Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Science/Shanghai 201204/Chine (5 aut., 6 aut.) |
DT : | Publication en série; Niveau analytique |
SO : | Polymer : (Guildford); ISSN 0032-3861; Coden POLMAG; Royaume-Uni; Da. 2012; Vol. 53; No. 25; Pp. 5982-5993; Bibl. 48 ref. |
LA : | Anglais |
EA : | Polystyrene (PS) foams with isotropy cell morphology and oriented cell morphology were prepared to investigate the relationship between the cell morphologies and the mechanical properties (tensile and impact properties). For the isotropy cell morphologies, the tensile strength, tensile modulus and impact strength of PS foams all increase with the increase of relative density. When the relative density is constant, the cell size does not affect the tensile strength and modulus but has a modest effect on the impact strength. The solid area (cell walls) fraction on the fracture-surface and the cell walls finely dispersed by the bubbles are the main reasons for the toughening of isotropy PS foams. For oriented foams, the cell morphologies oriented perpendicular to the impact direction could significantly enhance the toughness of PS foams. The oriented bubbles and the matrix perpendicular to the fracture propagation direction are expected to absorbed large impact energy during the fracture process and make sample more ductile. The impact strength of the highly oriented PS foam in this work is about 1.5 times that of the unfoamed one while its relative density is 0.3. Small angle X-ray scattering (SAXS) measurements indicate that the molecular chains can be oriented by the shearing of the bubbles by oriented foaming, which leads to the improvement of tensile strength along oriented direction. In addition, the cells oriented parallel to the impact direction result in the poor impact properties. |
CC : | 001D10A06A |
FD : | Plastique alvéolaire; Styrène polymère; Structure cellulaire; Anisotropie; Relation structure propriété; Propriété mécanique; Etude expérimentale |
FG : | Matière plastique |
ED : | Cellular plastic; Styrene polymer; Cell structure; Anisotropy; Property structure relationship; Mechanical properties; Experimental study |
EG : | Plastics |
SD : | Plástico espumoso; Estireno polímero; Estructura celular; Anisotropía; Relación estructura propiedad; Propiedad mecánica; Estudio experimental |
LO : | INIST-11463.354000502401350400 |
ID : | 13-0160413 |
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Pascal:13-0160413Le document en format XML
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<front><div type="abstract" xml:lang="en">Polystyrene (PS) foams with isotropy cell morphology and oriented cell morphology were prepared to investigate the relationship between the cell morphologies and the mechanical properties (tensile and impact properties). For the isotropy cell morphologies, the tensile strength, tensile modulus and impact strength of PS foams all increase with the increase of relative density. When the relative density is constant, the cell size does not affect the tensile strength and modulus but has a modest effect on the impact strength. The solid area (cell walls) fraction on the fracture-surface and the cell walls finely dispersed by the bubbles are the main reasons for the toughening of isotropy PS foams. For oriented foams, the cell morphologies oriented perpendicular to the impact direction could significantly enhance the toughness of PS foams. The oriented bubbles and the matrix perpendicular to the fracture propagation direction are expected to absorbed large impact energy during the fracture process and make sample more ductile. The impact strength of the highly oriented PS foam in this work is about 1.5 times that of the unfoamed one while its relative density is 0.3. Small angle X-ray scattering (SAXS) measurements indicate that the molecular chains can be oriented by the shearing of the bubbles by oriented foaming, which leads to the improvement of tensile strength along oriented direction. In addition, the cells oriented parallel to the impact direction result in the poor impact properties.</div>
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<server><NO>PASCAL 13-0160413 INIST</NO>
<ET>Oriented foaming of polystyrene with supercritical carbon dioxide for toughening</ET>
<AU>BAO (Jin-Biao); TAO LIU; LING ZHAO; HU (Guo-Hua); XIARAN MIAO; XIUHONG LI</AU>
<AF>State Key Laboratory of Chemical Engineering, East China University of Science and Technology/Shanghai 200237/Chine (1 aut., 2 aut., 3 aut.); Laboratory Reactions and Process Engineering, CNRS-Nancy Université-INPL-ENSIC, 1 rue Grandville, BP 20451/54001 Nancy/France (4 aut.); Institut Universitaire de France, Maison des Universités, 103 Boulevard Saint-Michel/75005 Paris/France (4 aut.); Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Science/Shanghai 201204/Chine (5 aut., 6 aut.)</AF>
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<LA>Anglais</LA>
<EA>Polystyrene (PS) foams with isotropy cell morphology and oriented cell morphology were prepared to investigate the relationship between the cell morphologies and the mechanical properties (tensile and impact properties). For the isotropy cell morphologies, the tensile strength, tensile modulus and impact strength of PS foams all increase with the increase of relative density. When the relative density is constant, the cell size does not affect the tensile strength and modulus but has a modest effect on the impact strength. The solid area (cell walls) fraction on the fracture-surface and the cell walls finely dispersed by the bubbles are the main reasons for the toughening of isotropy PS foams. For oriented foams, the cell morphologies oriented perpendicular to the impact direction could significantly enhance the toughness of PS foams. The oriented bubbles and the matrix perpendicular to the fracture propagation direction are expected to absorbed large impact energy during the fracture process and make sample more ductile. The impact strength of the highly oriented PS foam in this work is about 1.5 times that of the unfoamed one while its relative density is 0.3. Small angle X-ray scattering (SAXS) measurements indicate that the molecular chains can be oriented by the shearing of the bubbles by oriented foaming, which leads to the improvement of tensile strength along oriented direction. In addition, the cells oriented parallel to the impact direction result in the poor impact properties.</EA>
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