Synthesis of self‐healing supramolecular rubbers from fatty acid derivatives, diethylene triamine, and urea

Abstract

We describe the synthesis of supramolecular self‐healing elastomers from vegetable oil fatty acid derivatives, diethylene triamine, and urea. Our strategy to obtain materials that are self‐healing but do not flow relies on the use of a wide molecular distribution of randomly branched oligomers equipped with self‐complementary and complementary hydrogen bonding groups. We prepared such oligomers with a two steps procedure. In the first step, diethylene triamine was condensed with dimer acids. In the second step, the oligomers obtained were allowed to react with urea. The molecules were characterized by NMR and IR spectroscopies and Monte‐Carlo simulations were used to analyze the molecular size distribution. The sensitivity to small variations of the experimental conditions has been examined and the robustness of the synthetic procedure optimized. © 2008 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 46: 7925–7936, 2008

Kajian Tentang Self-Healing Rubber Self Healing Rubber Review

“…Sedangkan pada beban yang lebih besar atau stress bernilai 20 kPa, material ini bersifat slow creep . Montarnal et al (2008) mengulangi penelitian yang sama tetapi menggunakan stokiometri yang berbeda (Tabel 2) dengan skema reaksi yang lebih lengkap (Gambar 9). Hasil analisis inframerah pada tahap pertama reaksi menunjukkan trend yang sama untuk setiap stokiometri yang digunakan.…”

“…Hasil analisis inframerah pada tahap pertama reaksi menunjukkan trend yang sama untuk setiap stokiometri yang digunakan. Puncak serapan asam karboksilat timbul pada 1394 Sumber: (Montarnal, et al, 2008) Tahap 1…”

Self-healing polymers and composites

“…207 This synthetic technique provided a batch of different monomers containing numerous hydrogen bond donors and acceptors (Fig. 17) that formed a supramolecular polymer through molecular recognition of these hydrogen bonding sites.…”

Supramolecular thermoplastics and thermoplastic elastomer materials with self-healing ability based on oligomeric charged triblock copolymers

“…[1][2][3] Several examples of supramolecularly crosslinked thermoplastic elastomers have been reported previously. The crosslinks can for example be formed by multiple hydrogen bonds, [4][5][6][7][8][9][10][11][12][13][14][15] π-π stacking interactions, 16,17 ionic interaction [18][19][20][21] or metal-ligand interaction. [22][23][24][25] Supramolecular materials based on self-assembly of oligopeptides 26 and nucleobases 27 have also been reported.…”