کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5030707 1470889 2017 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Parameter optimization for 3D bioprinting of hydrogels
ترجمه فارسی عنوان
بهینه سازی پارامتر برای چاپ دو بعدی هیدروژل
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی پزشکی
چکیده انگلیسی
Successful bioprinting of hydrogels relies on geometric accuracy and cell viability, both of which are influenced by a number of variable printing parameters. Despite much research aimed at the resulting quality of bioprinted structures, there is no standard method of comparing bioprint results. In this study, we have developed a simple method of assessing the bioprint results from a range of printing parameters in a standardized manner applicable to extrusion-based bioinks. The purpose of the parameter optimization index (POI) is to minimize the shear stress acting on the bioink, and thus on the encapsulated cells, while ensuring the maximum geometric accuracy is obtained. Here we demonstrate the use of the POI on a blend of 7% alginate and 8% gelatin, and test the printing achieved through 25, 27, and 30 gauge print nozzles at 1-6 mm/s print speeds, and at 100-250 kPa print pressures. In total, we tested 72 printing configurations. Our data shows that for this particular hydrogel blend, the optimum print is obtained with a 30 gauge nozzle, 100 kPa print pressure and 4 mm/s print speed. The POI is intuitive and easy to assess, and could be a useful method across a wide range of 3D bioprinting research and development applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioprinting - Volume 8, December 2017, Pages 8-12
نویسندگان
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