کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5210898 | 1382925 | 2008 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and characterization of poly(acrylamidoglycolic acid) grafted onto chitosan and its polyelectrolyte complexes with hydroxyapatite
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Synthesis and characterization of poly(acrylamidoglycolic acid) grafted onto chitosan and its polyelectrolyte complexes with hydroxyapatite Synthesis and characterization of poly(acrylamidoglycolic acid) grafted onto chitosan and its polyelectrolyte complexes with hydroxyapatite](/preview/png/5210898.png)
چکیده انگلیسی
Graft copolymerization of acrylamidoglycolic acid (AGA) onto chitosan (CS) was carried out via a free radical initiation mechanism using a redox initiation system. Grafting ratio (%), efficiency, and conversion (%) were all found to depend on the content of potassium persulfate and AGA as well as on reaction temperature and time. Evidence of grafting was obtained by FTIR, 13C NMR spectra, differential scanning calorimetry, X-ray diffraction, and scanning electron microscopy. Hydroxyapatite (HA) polyelectrolyte complexes (PEC) were prepared by in situ addition of HA to the polymerization medium under optimal reaction conditions. Complexes were prepared using different ratios of HA with respect to CS-g-PAGA graft copolymers. The synthesized PECs were evaluated in swelling studies in phosphate-buffered saline. A mechanism for the free radical grafting and HA complexation were proposed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reactive and Functional Polymers - Volume 68, Issue 5, May 2008, Pages 943-953
Journal: Reactive and Functional Polymers - Volume 68, Issue 5, May 2008, Pages 943-953
نویسندگان
K.S.V. Krishna Rao, Ildoo Chung, Chang-Sik Ha,