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- W764072927 abstract "Novel triblock-graft copolymers, poly ethylene glycol-b-[poly(ε-caprolactone)-g-poly(2-(2-methoxyethoxy) ethyl methacrylate-co-oligo (ethylene glycol) methacrylate)]-b-poly ethylene glycol (PEG-b-[PCL-g-P(MEO2MA-co-OEGMA)]-b-PEG) (tBG), were synthesized via ring-opening polymerization (ROP) and atom transfer radical polymerization (ATRP). In the synthesis process, temperature responsive P(MEO2MA-co-OEGMA) chains were grafted onto the PCL block of triblock copolymer PEG-b-PCL-b-PEG to improve its hydrophilicity. This method succeeded in increasing the solubility of PEG-b-PCL-b-PEG in water, and more importantly, endowing PEG-b-PCL-b-PEG with temperature sensitivity. By adjusting the feed ratio of 2-(2-methoxy ethoxy) ethyl methacrylate (MEO2MA) and oligo (ethylene glycol) methacrylate (OEGMA) monomers, the lower critical solution temperature (LCST) of the tBG can be realized at about 37 °C. Taking advantage of the excellent mechanical property of graphene sheets, alkyne-functionalized graphene oxide (alkyne-GO) was introduced to cross-link tBGs and prepare tBG/GO composite hydrogel through click reaction between tBG-N3 and alkyne-GO. Different from traditional cross-linkers, alkyne-GO acts as reinforcing filler in the composite hydrogel. Benefiting from superior properties of PCL, PEG, P(MEO2MA-co-OEGMA) and GO, the as-prepared temperature responsive tBG/GO hydrogel exhibits excellent mechanical strength and toughness, demonstrating future potential applications in tissue engineering and biotechnology fields." @default.
- W764072927 created "2016-06-24" @default.
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- W764072927 date "2015-09-01" @default.
- W764072927 modified "2023-10-04" @default.
- W764072927 title "Synthesis of novel temperature responsive PEG-b-[PCL-g-P(MEO2MA-co-OEGMA)]-b-PEG (tBG) triblock-graft copolymers and preparation of tBG/graphene oxide composite hydrogels via click chemistry" @default.
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- W764072927 doi "https://doi.org/10.1016/j.reactfunctpolym.2015.05.011" @default.
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