کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7783289 1500569 2018 33 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reinforcement of thermoplastic chitosan hydrogel using chitin whiskers optimized with response surface methodology
ترجمه فارسی عنوان
تقویت هیدروژل کیتوزان گرمانرم با استفاده از کیوی های کیتین بهینه شده با روش سطح پاسخ
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی
To strengthen the mechanical strength of thermo-sensitive hydroxybutyl chitosan (HBC) hydrogel, chitin whiskers were used as sticker to fabricate reinforced HBC (HBCW) hydrogel by using response surface methodology. Unlike the intrinsic network of HBC hydrogel, HBCW hydrogel showed a laminar shape with firm structure. The preparation condition was optimized by three-factor-three-level Box-Behnken design. The maximum mechanical strength (1011.11 Pa) was achieved at 50 °C, when the concentrations of HBC and chitin whiskers were 5.1 wt% and 2.0 wt%, respectively. The effects of temperature, pH value and NaCl concentration on mechanical strength of HBCW hydrogels were investigated via the oscillatory stress sweeps. The results showed that HBCW hydrogel could reach the maximum stiffness (∼1126 Pa) at 37 °C pH 12.0. Low pH and high salty ions could decrease the stability of hydrogel, while chitin whiskers could increase the stress tolerance and related ruptured strain of HBCW hydrogels.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 189, 1 June 2018, Pages 280-288
نویسندگان
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