Abstract
We report the shape-memory PAA/PEO blends where in situ hydrogen-bonding complex and the excess PEO component serve as elastomer and switching element, respectively. The hydrogen bonding interactions between PAA and PEO are responsible for in situ PAA/PEO complex formation. The in situ PAA/PEO complex, water insoluble and highly elastic, is well interpenetrated with the excess crystalline PEO component to produce bi-continuous phase morphology. As a result, the blends (wtPAA/wtPEO = 0.1 : 1 and 0.2 : 1), consisting of sufficient amount of in situ complex and the excess highly crystalline PEO, exhibit superior shape memory effects with a fixing and recovery ratio of nearly 100%.
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