کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5210293 | 1382884 | 2012 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of dextran-graft-PHBHV amphiphilic copolymer using click chemistry approach
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Synthesis of dextran-graft-PHBHV amphiphilic copolymer using click chemistry approach Synthesis of dextran-graft-PHBHV amphiphilic copolymer using click chemistry approach](/preview/png/5210293.png)
چکیده انگلیسی
Dextran-graft-PHBHV copolymers were prepared using click-chemistry. Well defined and functional dextran backbones containing azide groups had been prepared by tosylation and subsequent nucleophilic displacement reaction with sodium azide (DSN3 = 1). Well defined PHBHV oligomers containing an alkyne end group were prepared in a one step reaction by direct alcoholysis from natural polyesters using propargyl alcohol with dibutyltin dilaurate as catalyst. Oligoesters were obtained with molar masses ranging from 900 to 6200 g molâ1. The Huisgen 1,3-dipolar cycloaddition allowed the preparation of graft copolymers with a content of PHBHV up to DSPHBHV = 0.19. The presence of PHBHV on the dextran backbone led to the formation of stable nanoparticles (160 nm) without surfactant by an emulsion-solvent evaporation method.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reactive and Functional Polymers - Volume 72, Issue 8, August 2012, Pages 487-494
Journal: Reactive and Functional Polymers - Volume 72, Issue 8, August 2012, Pages 487-494
نویسندگان
Pierre Lemechko, Estelle Renard, Jean Guezennec, Christelle Simon-Colin, Valerie Langlois,