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
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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 (20â¯h or longer). The aim of this work was to assess whether fast UV irradiation (up to 60â¯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 50-90â¯Î¼m) were produced. A gelation yield in the range 60-80% was recorded, with higher values obtained for low PEGDA concentrations (5 and 10%â¯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
Journal: Materials Letters - Volume 218, 1 May 2018, Pages 305-308
نویسندگان
Marta Madaghiele, Luca Salvatore, Christian Demitri, Alessandro Sannino,