6533b858fe1ef96bd12b6150
RESEARCH PRODUCT
false
Hiromi KitanoChoichiro ShimasakiChristoph KowitzMitsuru OikeKiyoshi HasegawaShigeya Takeuchisubject
chemistry.chemical_compoundEnd-groupMonomerchemistryPolymer chemistryRadical polymerizationCopolymerEmulsion polymerizationMethacrylateMacromonomerStyrenedescription
A macromonomer was prepared from succinimido methacrylate and poly(N-isopropylacrylamide) (PIPA) with an amino end group. The macronomer (MA-PIPA) obtained shows a temperature-responsive transition phenomenon from coil to globule in water at about 36°C. For the copolymer of MA-PIPA with acrylamide (ratio of monomer residues of N-isopropylacrylamide (IPA) and acrylamide (AAm) 10:3), the transition temperature of the PIPA chain was the same as that of the macromonomer, whereas the transition temperature of a linear copolymer of IPA and AAm (ratio of the monomer residues 10:3) was much higher than that of PIPA (52°C). Microspheres were prepared by emulsion polymerization of the macromonomer and styrene in the presence of sodium dodecylsulfate. The microspheres obtained show a temperature responsiveness in the critical flocculation concentration. The macromonomer prepared here can be used as a component of temperature-sensitive devices in various forms.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1993-02-01 | Die Makromolekulare Chemie |