Abstract
AbstractSugar moieties were incorporated into cross‐linked polyurethane (PUR) networks in an effort to achieve self‐repairing in the presence of atmospheric carbon dioxide (CO2) and water (H2O). When methyl‐α‐D‐glucopyranoside (MGP) molecules are reacted with hexamethylene diisocyanate trimer (HDI) and polyethylene glycol (PEG) to form cross‐linked MGP‐polyurethane (PUR) networks, these materials are capable of self‐repairing in air. This process requires atmospheric amounts of CO2 and H2O, thus resembling plant behavior of carbon fixation during the photosynthesis cycle. Molecular processes responsible for this unique self‐repair process involve physical diffusion of cleaved network segments as well as the formation of carbonate and urethane linkages. Unlike plants, MGP‐PUR networks require no photo‐initiated reactions, and they are thus capable of repair in darkness under atmospheric conditions.
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