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Supramolecular composites of photo‐cured acrylated castor oil and fibers formed by the self‐assembly of low molecular weight organic gelators
Author(s) -
Shibata Mitsuhiro,
Kakihara Takuya,
Obara Syotarou
Publication year - 2012
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.22341
Subject(s) - materials science , composite material , differential scanning calorimetry , castor oil , composite number , curing (chemistry) , flexural strength , flexural modulus , modulus , supramolecular chemistry , chemistry , organic chemistry , molecule , physics , thermodynamics
A mixture of acrylated castor oil (ACO) with N ‐carbobenzyloxy‐ L ‐isoleucylaminooctadecane (CIA) or ( R )‐12‐hydroxystrearic acid (HSA) containing photo‐initiators was heated to 130°C and gradually cooled to room temperature to give bio‐based gelatinous material. The photo‐curing of the gel generated a crosslinked ACO composite containing CIA or HSA. The optical micrographic and differential scanning calorimetry analyses revealed that a supramolecular fibrous network is formed for photo‐cured ACO (cACO)/CIA and that spherulitic crystals are formed for cACO/HSA. The tan δ peak temperatures measured by dynamic mechanical analysis for cACO/CIA and cACO/HSA composites were higher than that of cACO. The flexural strength and modulus of cACO/CIA composites increased with an increase of CIA content, and those values were higher than those of cACO/HSA composites. POLYM. COMPOS., 33:2001–2008, 2012. © 2012 Society of Plastics Engineers