کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8014147 1517170 2018 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fast synthesis of poly(ethylene glycol) diacrylate cryogels via UV irradiation
ترجمه فارسی عنوان
سنتز سریع سیکلهای پلی اتیلن گلیکول دیاکریلات توسط اشعه ماوراء بنفش
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
چکیده انگلیسی
Poly(ethylene glycol) diacrylate (PEGDA) cryogels, particularly useful for biotechnological applications, are currently fabricated exploiting crosslinking systems that require long freezing/crosslinking times (20 h or longer). The aim of this work was to assess whether fast UV irradiation (up to 60 s) of frozen PEGDA solutions could be an advantageous alternative for cryogel production. By using different polymer concentrations and UV times, cryogels with highly interconnected macropores (about 50-90 μm) were produced. A gelation yield in the range 60-80% was recorded, with higher values obtained for low PEGDA concentrations (5 and 10% w/v). Interestingly, while decreasing the swelling and increasing the stiffness of the cryogels, a higher polymer concentration was also found to reduce the pore size. Furthermore, increasing the UV time resulted in significantly higher swelling and larger pores for 10% PEGDA samples, while having negligible effect on other cryogel types and/or features. Although deserving further exploration, fast UV irradiation is an effective method to produce PEGDA cryogels with tunable properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 218, 1 May 2018, Pages 305-308
نویسندگان
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