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Compatibilization of multicomponent composites through a transitioning phase: Interfacial tensions considerations

Koh, J. Justin; Zhang, Xiwen; Kong, Junhua; He, Chaobin

Customer publications

Compatibilization of multicomponent composites through a transitioning phase: Interfacial tensions considerations

Koh, J. Justin; Zhang, Xiwen; Kong, Junhua; He, Chaobin

A novel interfacial compatibilization technique for incompatible polymer blends or composites is proposed, in which a transitioning layer was introduced between the matrix and the dispersed phase of the otherwise incompatible components. The transitioning phase should have good interactions with both the components, resulting in lower interfacial energy between the…
Cavitation in Poly(4-methyl-1-pentene) during Tensile Deformation

Chen, Ran; Lu, Ying; Jiang, Zhiyong; Men, Yongfeng

(Natural) polymersApplicationCharacterizationCustomer publicationsMaterialOrientation analysisPolymer researchSAXSTechniqueTemperatureTensileUSAXS

Cavitation in Poly(4-methyl-1-pentene) during Tensile Deformation

Chen, Ran; Lu, Ying; Jiang, Zhiyong; Men, Yongfeng

The poly(4-methyl-1-pentene) sample was used to investigate the cavitation-induced stress-whitening phenomenon during stretching at different temperatures via the ultrasmall-angle X-ray scattering technique. Two modes of cavitation were found that mode I cavitation activated around yield point followed by mode II cavitation generated in highly oriented state. The critical strain for…
Asynchronous fracture of hierarchical microstructures in hard domain of thermoplastic polyurethane elastomer: Effect of chain extender

Guo, Yaqian; Zhang, Ruoyu; Xiao, Qiang; Guo, Hongxia; Wang, Zongbao; Li, Xing; Chen, Jing; Zhu, Jin

Customer publications

Asynchronous fracture of hierarchical microstructures in hard domain of thermoplastic polyurethane elastomer: Effect of chain extender

Guo, Yaqian; Zhang, Ruoyu; Xiao, Qiang; Guo, Hongxia; Wang, Zongbao; Li, Xing; Chen, Jing; Zhu, Jin

Four chain extenders, 1,3-propanediol (PDO), 2-methyl-1,3-propanediol (MPO), 2,2-dimethyl-1,3-propanediol (NPG) and 2,2,4,4-tetramethyl-1,3-cyclobutanedio (CBDO) are chosen to synthesize model polyurethanes, respectively. Although with similar oxygen distance between the two hydroxyl groups, their volumes increase gradually according to computer simulation. As expected, the degree of microphase…
Assembly and photochemical properties of mesoporous networks of spinel ferrite nanoparticles for environmental photocatalytic remediation

Skliri, Euaggelia; Miao, Jianwei; Xie, Jian; Liu, Guangfeng; Salim, Teddy; Liu, Bin; Zhang, Qichun; Armatas, Gerasimos S.

Customer publications

Assembly and photochemical properties of mesoporous networks of spinel ferrite nanoparticles for environmental photocatalytic remediation

Skliri, Euaggelia; Miao, Jianwei; Xie, Jian; Liu, Guangfeng; Salim, Teddy; Liu, Bin; Zhang, Qichun; Armatas, Gerasimos S.

Spinel ferrite materials have an electronic band structure that is well suited for visible light-induced catalysis, however, their photocatalytic activity remains low due to the daunting charge-carrier separation process. In this article, we report that high-surface-area mesoscopic architectures composed of tightly connected ultrasmall spinel ferrite nanocrystals can efficiently suppress…
Are Keggin’s POMs Charged Nanocolloids or Multicharged Anions?

Malinenko, Alla; Jonchère, Alban; Girard, Luc; Parrès-Maynadié, Sandra; Diat, Olivier; Bauduin, Pierre

Customer publications

Are Keggin’s POMs Charged Nanocolloids or Multicharged Anions?

Malinenko, Alla; Jonchère, Alban; Girard, Luc; Parrès-Maynadié, Sandra; Diat, Olivier; Bauduin, Pierre

Owing to their multiple charges and their nanometric size, polyoxometalates (POMs) are at the frontier between ions and charged colloids. We investigated here the effect of POM–POM electrostatics repulsions on their self-diffusion in water by varying POM and supporting salt concentrations. The self-diffusion coefficients of two Keggin’s POMs [silicotungstate (SiW12O404–)…
Aerogels of hierarchically porous syndiotactic polystyrene with a dielectric constant near to air

Joseph, Angel Mary; Nagendra, Baku; Shaiju, P.; Surendran, K. P.; Gowd, E. Bhoje

Customer publications

Aerogels of hierarchically porous syndiotactic polystyrene with a dielectric constant near to air

Joseph, Angel Mary; Nagendra, Baku; Shaiju, P.; Surendran, K. P.; Gowd, E. Bhoje

Herein ultralow density aerogels are developed through a feasible freeze casting technique. Briefly, the syndiotactic polystyrene (sPS) gel was prepared using xylene and subjected to successive steps of solvent exchange using non-solvents like ethanol and water. These samples were freeze-dried to obtain aerogels of the same shape and size as…