کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5180628 1502550 2015 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Theoretical and experimental investigation of physical mechanisms responsible for polymer nanofiber formation in solution blowing
ترجمه فارسی عنوان
بررسی تئوری و تجربی مکانیسم های فیزیکی مربوط به تشکیل پلیمر نانوفیبری در دمیدن محلول
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی


- A comprehensive numerical model of solution blowing process of multiple three-dimensional polymer jets issued from a die nosepiece into a coaxial high-speed air flow is developed.
- The numerical model solves the quasi-one-dimensional equations of the mechanics of viscoelastic free liquid jets.
- The model predicts the polymer jet configurations and deposition patterns (laydown) on the moving collection screen, along with the fiber-size distributions.
- The numerical predictions were substantiated with experimental findings of this work, which used high speed imaging, as well as the data from the literature.

This work describes a comprehensive numerical model of solution blowing process of multiple three-dimensional polymer jets issued from a die nosepiece into a high-speed air flow and deposited onto a moving screen. The model solves the quasi-one-dimensional equations of the mechanics of free liquid jets with the jet axis configuration being three-dimensional. It accounts for the polymer solution viscoelasticity, jet interaction with the surrounding high-speed air flow, and solvent evaporation and jet solidification. The results include the polymer jet configurations in flight as well the detailed information on the pattern in which the oncoming polymer jets are deposited on the moving screen (the so-called lay-down), and its characteristics, in particular, the fiber-size distributions obtained under different conditions. The work also describes experiments on solution blowing and comparison of the numerical and experimental data.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 56, 15 January 2015, Pages 452-463
نویسندگان
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