کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5156564 | 1500582 | 2017 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and characterization of grafting polystyrene from guar gum using atom transfer radical addition
ترجمه فارسی عنوان
سنتز و خصوصی سازی پیوند پلی استایرن از آدامس گار با استفاده از افزودن رادیکال انتقال اتم
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
چکیده انگلیسی
To broaden the application fields for guar gum, this natural polymer is often grafted to/from the surface to modify its properties. Polystyrene-guar gum (PS-guar gum) is successfully synthesized using atom transfer radical addition based n-BuBr(C4H9Br), Cu(I)Cl and N,N,Nâ²,Nâ³,Nâ´-penthamethyldiethylenetriamine (C9H23N3,PMDETA) as initiator, electronating agent and ligand respectively in an inert atmosphere. The graft copolymer is characterized by FT-IR, 1H NMR, XRD and scanning electron microscope (SEM). The results show that styrene is successfully introduced onto guar gum and particles of PS-guar gum adopt a disordered morphology with diameters of 100Â nm, and PS-guar gum are largely amorphous with poor crystallinity. Besides, add on shows an increasing trend on increasing the concentration of PS. Swelling behavior, hydrophobicity and thermal stability of PS-guar gum indicate that PS-guar gum has great thickening capacity and thermal stability. Nevertheless, modification of guar gum via ATRA truly is convenient to industrial production since facilitating the manufacturing process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 176, 15 November 2017, Pages 266-272
Journal: Carbohydrate Polymers - Volume 176, 15 November 2017, Pages 266-272
نویسندگان
Yang Yang, Fu Chen, Qi Chen, Jie He, Tao Bu, Xuemei He,