Results 41 to 50 of about 5,160 (276)

Le caoutchouc naturel d'Hevea brasiliensis, un bioélastomère aux propriétés inégalées

, 2018
Le caoutchouc naturel est produit à partir du latex de l'hévéa (Hevea brasiliensis. Ce bioélastomère présente des propriétés remarquables encore inégalées aujourd'hui par les élastomères synthétiques. Cet article présente une vue globale de l'amont de la
Vaysse, Laurent, Bonfils, Frédéric, Lecomte, Sophie, Bottier, Céline, Peruch, Frédéric, Sainte-Beuve, Jérôme   +5 more
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Acetoacetates Derived From Vegetable Oils: A Platform for Tailor‐Made Vinylogous Urethane Foams

Advanced Functional Materials, EarlyView.
A renewable vegetable oil is converted into acetoacetate‐functionalized precursors for the preparation of catalyst‐free vinylogous urethane foams. Room‐temperature foaming with n‐pentane generates lightweight cellular materials, while the choice of amine enables control over foam structure and mechanical properties.
Krzysztof Polaczek, Priscilla de Souza Lima, Olga Gotkiewicz, Ondrej Kopilec, Radka Hobzova, Lívia Kanizsová, Mikelis Kirpluks, Ondrej Sedlacek, Hynek Beneš   +8 more
wiley   +1 more source

Brève histoire du caoutchouc

, 1993
Après une lente évolution de l'utilisation du caoutchouc naturel de cueillette (caoutchouc sylvestre) en Amazonie, les premiers développements de l'automobile (pneumatique notamment) induisent une exploitation quasi exclusive de l'hévéa pour l'obtention ...
Serier, Jean-Baptiste
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Ultrathin Amphipathic Dual‐Polymer Networks: Unlocking Hyper‐Permeable CO2 Capture via Solvent‐Mediated Poly(Ethylene Oxide) Amorphization

Advanced Functional Materials, EarlyView.
Hydrophilic PEO‐copolymers and hydrophobic PDMS are physically integrated via a compatibilizing solvent into an amphipathic dual‐polymer network with versatile interfacial affinity and completely amorphized PEO segments for hyper‐permeable CO2 transport.
Ji Wu, Fan Feng, Baiwang Zhao, Jordan Yuan Zhe Ng, Kaiyu Wang, Can Zeng Liang, Guangtai Zheng, Boxuan Zhao, Tai‐Shung Chung, Sui Zhang   +9 more
wiley   +1 more source

From Bulk to Colloidal Nanocrystals: Top‐Down Synthesis of Highly Luminescent Cs2ZrCl6:Te4+ Double Perovskite Nanocrystals for X‐Ray Imaging

Advanced Functional Materials, EarlyView.
Top‐down ultrasonication produces highly emissive Cs2ZrCl6:Te4+ nanocrystals (NCs) with a PLQY of 65%, which is higher compared to that of the NCs synthesized by typical bottom‐up hot‐injection synthesis. The colloidal Cs2ZrCl6:Te4+ NCs have been found to be potential candidates for x‐ray scintillation imaging.
Yang Liu, Ye Wu, Hongpeng Liu, Cong Cui, Iago López‐Fernández, Nadesh Fiuza‐Maneiro, Sergio Gómez‐Graña, Yingjun Chai, Zhicheng Wang, Yusheng Wu, Laishi Li, Xiaoming Li, Lakshminarayana Polavarapu   +12 more
wiley   +1 more source

Out‐of‐Plane Strain‐Decoupled Architecture for High‐Fill‐Factor Stretchable OLED Displays

Advanced Functional Materials, EarlyView.
A vertically decoupled multilayer SOLED architecture separates emissive pixel islands from deformable interconnects, allowing low‐modulus elastomeric layers to accommodate applied strain and suppress strain transfer to the OLED region. This design, combined with transparent hybrid encapsulation, enables a high fill factor (∼75%), stretchability ...
Young Hyun Son, Kyung Cheol Choi, Jeong Hyun Kwon   +2 more
wiley   +1 more source

Shedding light on the existence of Furan fatty acids in latex lipids across a wide diversity of Hevea brasiliensis genotypes

Journal of Bioresources and Bioproducts
Furan fatty acids produced by plants and bacteria, and present in some edible resources, have attracted significant scientific attention for their health benefits. They include 10,13-epoxy-11-methyl-octadecan-10,12-dienoic acid, which has been identified
Chaisiri Kitpaosong, Siriluck Liengprayoon, Erwann Durand, Tucksin Lerksamran, Aurélie Daval, Eric Gohet, Lim Khan Tiva, Phean Chetha, Kong Mengchheang, Phen Phearun, Ung Rattana, Kim Chandy, Pol Sokea, Un Kim Eng, Kittipong Rattanaporn, Bruno Barea, Laurent Vaysse   +16 more
doaj   +1 more source

Le caoutchouc au Mexique

, 1987
Historique de la production de caoutchouc naturel au Mexique à partir de l'hévéa et du guayule. Pendant la 2ème guerre mondiale il y eut une relance des 2 types d'origine du caoutchouc.
Serier, Jean-Baptiste
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Rare‐Earth–Functionalized Carbon Dot Hydrogels as Mechanically Robust Antibacterial Wound Dressings

Advanced Healthcare Materials, EarlyView.
The schematic depicts a dynamically cross‐linked PVA hydrogel network in which reversible borate ester bonds and hydrogen‐bonding interactions integrate lanthanum‐doped carbon dots (La‐CDs) and dipotassium glycyrrhizinate (DPG) to form a mechanically robust, multifunctional matrix.
Shih‐Han Tsai, Ramadhass Keerthika Devi, Muthusankar Ganesan, Guo‐Ping Chang Chien, Chun Che Lin   +4 more
wiley   +1 more source

Le Système De Corvée Et De Terreur Du Caoutchouc En Indépendant Du Congo(1885-1908)

Revue d'Histoire Méditerranéenne
L'étude représente le système de la corvée et de la terreur du caoutchouc exercé par le roi belge Léopold II dans l'État indépendant du Congo (le territoire de l’actuelle république démocratique du Congo, portait le nom du Zaïre) pendant la période ...
OULTACHE Saloua
doaj