A new type of shape-memory poly(methyl methacrylate-co-2-hydroxyethyl acrylate)/hydroxyl terminated polydimethylsiloxane (P(MMA-co-HEA)/PDMS-OH) hydrogen-bonded complexes were obtained by the copolymerization of MMA and HEA on the presence of PDMS-OH. The chemical structures

morphologies and dynamical mechanical properties of these hydrogen-bonded complexes were determined by FTIR

SEM and DMA analysis. The results show that the content of PDMS-OH significant impacts on the morphology of P(MMA-co-HEA)/PDMS-OH hydrogen-bonded complexes. The morphology of hydrogen-bonded complexes transform from sea-islands structure to inversed phase structure when the weight content of PDMS-OH increases from 20% to 30%. Shape-memory effects of hydrogen-bonded complexes were studied by bending tests. The results show that P(MMA-co-HEA)/PDMS-OH complexes achieved excellent shape memory properties with strain fixity ratio of above 98% and strain recovery ratio of above 99%. Compared to poly(methyl methacrylate-co-ethyl acrylate)/PDMS-OH (P(MMA-co-EA)/PDMS-OH) complexes

P(MMA-co-HEA)/PDMS-OH hydrogen-bonded complexes exhibit higher modulus ratio owing to the hydrogen-bonding. Furthermore

the recovery speed of hydrogen-bonded complex is faster than that of the P(MMA-co-EA)/PDMS-OH at the same temperature conditions.