A　novel　polycarboxylate　superplasticizer　(PCE)　with　energy　saving　preparation　was　elaborately　designed　and　synthesized　by　using　acrylic　acid　(AA),　hydroxypropyl　acrylate　(HPA)　and　isopentenyl　polyethylene　glycol　(IPEG)　as　monomers.　To　investigate　the　effects　of　the　preparation　method　on　the　effectiveness　of　PCE,　the　PCEs　were　prepared　with　an　energy-saving　method　and　a　common　method　respectively,　and　the　hydration　heat　evolutions　of　the　cement　pastes　containing　these　PCEs　were　comparatively　probed　at　the　same　time.　Furthermore,　the　working　mechanisms　of　the　PCEs　by　different　preparations　were　identified　via　adsorption　behavior,　adsorption　kinetic　and　Zeta　potential　of　the　PCE　on　cement　surfaces.　The　results　showed　that,　this　novel　PCE　prepared　in　an　energy　saving　manner　could　significantly　prolong　the　hydration　process　and　present　a　stronger　adsorption　capacity.　In　addition,　the　adsorption　of　this　PCE　on　cement　surface　exhibited　a　characteristic　of　pseudo　first　order　kinetic　equation　model.　The　evaluation　in　energy　conservation　showed　that,　this　energy　saving　preparation　could　save　1.548×104　kJ　per　10　ton　production.　The　aim　of　this　study　is　to　provide　a　new　avenue　to　synthesize　a　PCE　with　the　economical　method　which　achieves　good　energy-saving　preparation.　Due　to　the　indispensable　application　in　construction　industry,　the　innovations　from　this　study　contribute　to　the　low　energy-consumption　production　and　high　eco-effectiveness　of　the　novel　PCE,　which　has　potential　applications　in　low-emission　building　materials.　©　2021　Trans　Tech　Publications　Ltd,　Switzerland.