Two-way　shape　memory　polymers　(2W-SMPs),　which　can　transition　between　two　distinct　temporary　shapes,　have　garnered　significant　attention　from　researchers.　This　study　successfully　developed　thermadapt　2W-SMPs　using　syndiotactic　1,2-polybutadiene　(SPB)　by　leveraging　dynamic　covalent　crosslinking　techniques.　Initially,　m-chloroperbenzoic　acid　(m-CPBA)　was　employed　for　the　epoxidation　of　SPB.　Cysteine　(Cys)　was　subsequently　introduced　to　form　a　dynamic　covalent　bond　of　β-hydroxy　ester　via　the　reaction　between　the　epoxy　groups　on　SPB　and　the　carboxyl　groups　of　Cys.　The　sulfhydryl　groups　of　Cys　can　undergo　oxidative　coupling　to　form　disulfide　bonds,　thereby　establishing　two　distinct　types　of　dynamic　covalent　bonds　within　the　material　and　lowering　its　topological　rearrangement　temperature.　Through　the　exchange　reactions　of　these　dynamic　covalent　bonds　at　elevated　temperatures,　the　resulting　material　exhibits　enhanced　mechanical　properties　and　can　be　reshaped　in　the　solid　state.　This　work　provides　a　viable　method　for　preparing　recyclable　thermally　adaptive　2W-SMPs　under　stress-free　conditions,　thereby　enriching　the　research　landscape　in　the　field　of　shape　memory　materials.　©　The　Author(s),　under　exclusive　licence　to　Springer　Science+Business　Media,　LLC,　part　of　Springer　Nature　2025.