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Self‐healing supramolecular elastomers based on the multi‐hydrogen bonding of low‐molecular polydimethylsiloxanes: Synthesis and characterization
Author(s) -
Zhang Anqiang,
Yang Lin,
Lin Yaling,
Yan Lishan,
Lu Hecheng,
Wang Lianshi
Publication year - 2013
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.38832
Subject(s) - polydimethylsiloxane , supramolecular chemistry , polymer chemistry , differential scanning calorimetry , materials science , gel permeation chromatography , elastomer , glass transition , supramolecular polymers , telechelic polymer , permeation , fourier transform infrared spectroscopy , polymer , end group , chemical engineering , chemistry , copolymer , composite material , membrane , organic chemistry , molecule , biochemistry , physics , engineering , thermodynamics
Novel self‐healing supramolecular elastomers based on polydimethylsiloxanes (SESi) were synthesized from a mixture of polydimethylsiloxanes derivers with single, di‐, or tri‐carboxylic acid groups (PDMS–COOH x , where x = 1, 2, and 3, respectively), diethylene triamine, and urea with a two‐stage procedure. The reactions and the final products were tracked, characterized, and confirmed by Fourier transform infrared spectroscopy, 1 H‐NMR, differential scanning calorimetry, dynamic mechanical analysis, and gel permeation chromatography. Compared with a supramolecular rubber based on dimer acid (reported previously) with a similar synthesis procedure, the SESi showed a lower glass‐transition temperature of about −113°C for the softer chain of polydimethylsiloxane and showed real rubberlike elastic behavior and self‐healing properties at room temperature or even lower temperatures. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013