کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8327269 1540199 2018 28 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Systematic dynamic viscoelasticity measurements for chitin nanofibers prepared with various concentrations, disintegration times, acidities, and crystalline structures
ترجمه فارسی عنوان
اندازه گیری های سیستماتیک وینو کواللاستی پویا برای نانوکامپوزیت های کیتین با غلظت های مختلف، زمان تجزیه، اسیدیته ها و ساختارهای بلوری
کلمات کلیدی
نانوسیم چیتین، اندازه گیری دینامیک ویسکولا الاستیک مقیاس قانون
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
چکیده انگلیسی
Dynamic viscoelasticities were measured for chitin nanofiber (ChNF) dispersions prepared with various concentrations, disintegration times, acidities, and crystalline structures. The 0.05 w/v% dispersions of pH neutral ChNFs continuously exhibited elastic behavior. The 0.05 w/v% dispersions of acidified ChNFs, on the other hand, transitioned from a colloidal dispersion to a critical gel and then exhibited elastic behavior with increasing ChNF concentration. A double-logarithmic chart of the concentration vs. the storage modulus was prepared and indicated the fractal dimension and the nanostructure in the dispersion. The results determined that the neutral α- and β-ChNFs were dispersed but showed some remaining aggregations and that the acidified β-ChNFs were completely individualized. In addition, the α-chitin steadily disintegrated with increasing disintegration time, and the aspect ratio of the β-chitin decreased as a result of the exscessive disintegration. The storage moduli of the ChNFs were greater than those of chitin solutions, nanorods, and nanowhiskers with the same solids concentrations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Biological Macromolecules - Volume 115, August 2018, Pages 431-437
نویسندگان
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