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Synthesis and characterization of stearyl‐group‐terminated dendrimers and thermosensitivity of their toluene solutions
Author(s) -
Xu DongMei,
Zhang KeDa,
Wu WenJuan
Publication year - 2005
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.22089
Subject(s) - dendrimer , amide , toluene , polymer chemistry , amine gas treating , polyamide , end group , chemistry , materials science , organic chemistry , polymer , copolymer
Stearyl‐group‐terminated poly(ester amide) dendrimers [PEAD (R) 3 and PEAD (R) 8 ] and a poly(amino amide) dendrimer [PAMAM (R) 4 ] were synthesized by the amidation of three, eight, and four terminated primary amino groups in poly(ester amine) dendrimers and a poly(amino amide) dendrimer with stearyl chloride. The dendrimer structures were characterized with IR and elemental analysis. The toluene solutions of the stearyl‐group‐terminated dendrimers were thermosensitive. Not only did gels form in PEAD (R) 3 –, PEAD (R) 8 –, and PAMAM (R) 4 –toluene solutions below 57.5, 60, and 49°C, respectively, but the content of toluene in the gels depended on the temperature, and a break existed at about 30°C. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 98: 341–346, 2005