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Organic–Inorganic Copolymerization for a Homogenous Composite without an Interphase Boundary
Author(s) -
Yu Yadong,
Mu Zhao,
Jin Biao,
Liu Zhaoming,
Tang Ruikang
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201913828
Subject(s) - copolymer , monomer , polymer , polyacrylamide , ionic bonding , materials science , interphase , chemical engineering , polymer chemistry , composite number , phosphate , acrylamide , composite material , chemistry , organic chemistry , ion , biology , engineering , genetics
Abstract Ionic oligomers and their crosslinking implies a possibility to produce novel organic–inorganic composites by copolymerization. Using organic acrylamide monomers and inorganic calcium phosphate oligomers as precursors, uniformly structured polyacrylamide (PAM)‐calcium phosphate copolymer is prepared by an organic–inorganic copolymerization. In contrast to the previous PAM‐based composites by mixing inorganic components into polymers, the copolymerized material has no interphase boundary owing to the homogenous incorporation of the organic and inorganic units at molecular level, resulting in a complete and continuous hybrid network. The participation of the ionic binding effect in the crosslinking process can substantially improve the mechanical strength; the copolymer can reach a modulus and hardness of 35.14±1.91 GPa and 1.34±0.09 GPa, respectively, which are far superior to any other PAM‐based composites.