Journal
JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY
Volume 55, Issue 8, Pages 588-594Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10601325.2018.1481344
Keywords
Click chemistry; ring-opening polymerization; star-type amphiphilic copolymer; terminally azide poly(-caprolactone); propargyl polyethylene glycol
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The synthesis of poly(-caprolactone-co-ethylene glycol) AAB star-type amphiphilic copolymers were carried out by use of a click chemistry reaction to block propargyl polyethylene glycol (propargyl-PEG) to terminally azide poly(-caprolactone) (PCL-N-3). For this purpose, propargyl-PEG was synthesized by the reaction of PEGs (3000Da, 2000Da, 1500Da, and 1000Da) and propargyl chloride. Terminally chloride poly(-caprolactone) (PCL-Cl) was carried out by means of ring-opening polymerization (ROP) of -caprolactone (CL) and 3-chloro-1,2-propanediol. Synthesis of PCL-N-3 was obtained by the chemical interaction of PCL-Cl and sodium azide. By reacting propargyl-PEG and PCL-N-3, the star-type amphiphilic copolymers were obtained. The characterization of products was accomplished by using multiple instruments including H-1-NMR, FT-IR, GPC, TGA, contact angles, and elemental analysis techniques.
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