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Preparation of Tough Biopolyurea Films from Aromatic Amino Acid as Diamine Monomer
Author(s) -
Grewal Manjit S.,
Taya Kazuya,
Tateyama Seiji,
Kaneko Tatsuo
Publication year - 2017
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201600194
Subject(s) - monomer , bioplastic , diamine , materials science , polymer chemistry , polymer , mechanical strength , organic chemistry , chemistry , composite material , ecology , biology
We have synthesized new bio‐based polyureas (PUs) using 4‐aminophenylalanine (4‐APhe) as a diamine monomer bioavailable by fermentation of genetically modified Escherichia coli . Most of PUs are processable into films or fibers having excellent mechanical properties; mechanical strength at maximum around 150 MPa and strain energy density around 10 J/cm 3 at maximum, which means that PU much tougher than those of conventional bioplastics.