The Weak Help the Strong: Low-Molar-Mass Organogelators Harden Bitumen | Zendy

Benjamin Isare | Zendy; Laurence Petit | Zendy; Emmanuelle Bugnet | Zendy; Régis Vincent | Zendy; Laurence Lapalu | Zendy; Philippe Sautet | Zendy; Laurent Bouteiller | Zendy

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The Weak Help the Strong: Low-Molar-Mass Organogelators Harden Bitumen

Author(s) -

Benjamin Isare,

Laurence Petit,

Emmanuelle Bugnet,

Régis Vincent,

Laurence Lapalu,

Philippe Sautet,

Laurent Bouteiller

Publication year - 2009

Publication title -

langmuir

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.042

H-Index - 333

eISSN - 1520-5827

pISSN - 0743-7463

DOI - 10.1021/la804086h

Subject(s) - molar mass , molar , molar ratio , asphalt , molar concentration , chemistry , modulus , chemical engineering , environmentally friendly , composite material , organic chemistry , materials science , polymer , geology , paleontology , engineering , catalysis , ecology , biology

Low-molar-mass organogelators (LMOG) can turn liquids into thermoreversible gels because they self-assemble into a fibrous network. In contrast, using the same kind of low-molar-mass additives to harden materials, which are already solidlike on their own, has been hardly exploited. We show here that simple dicarboxylic acids are very efficient low-molar-mass organogelators (LMOG) for bitumen. Indeed, they increase the range of temperature where bitumen is a solid. Moreover, the hardness and elastic modulus of bitumen at room temperature are also improved. This concept of improving the mechanical properties of a solid with an LMOG can probably be applied to other materials.

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