کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1255606 | 971431 | 2012 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Preparation of amphiphilic graft copolymer with polyisoprene backbone by combination of anionic polymerization and “click” reaction Preparation of amphiphilic graft copolymer with polyisoprene backbone by combination of anionic polymerization and “click” reaction](/preview/png/1255606.png)
A novel graft copolymer consisting of polyisoprene backbone and hydrophilic side chain with carbamic acid ester functional group was prepared via thiol-ene “click” reaction and alcohol-isocyanate reactions. Polyisoprene was synthesized by anionic polymerization using n-butyl lithium as initiator, and the pendant hydroxyl groups were introduced by the thiol-ene reaction of mercaptoethanol with the double bond of 1, 2-addition units of PI backbone in the presence of radical initiator azobisisobutyronitrile. Isocyanate end group capped poly(ethylene glycol) (mPEG-NCO) was grafted onto the PI backbone through alcohol-isocyanate reaction between the pendant hydroxyl groups and isocyanate group of mPEG-NCO. The structure of the graft copolymer were characterized and confirmed by means of size-exclusion chromatography, 1H NMR and FTIR spectroscopy.
Journal: Chinese Chemical Letters - Volume 23, Issue 3, March 2012, Pages 347–350