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Các vật liệu bionanocomposite tương thích sinh học dựa trên polyurethane có bạc cho các ứng dụng y sinh
Tóm tắt
Các màng bionanocomposite dựa trên polyurethane (PU), ma trận ngoại bào (EM), và các hạt nano bạc (AgNPs) đã được chế tạo bằng cách áp dụng cả phương pháp đúc dung môi và phương pháp điện spinning/điện phun. Các thành phần PU–EM–Ag đã được điện spinning/điện phun lên màng PU để hiện thực hóa các vật liệu sinh học tương thích được cải thiện. Các đặc tính hình thái bề mặt và tính ướt đã được điều tra bằng các kỹ thuật SEM và AFM cũng như đo góc tiếp xúc với nước. Góc tiếp xúc với nước phụ thuộc vào hóa học bề mặt và hai phương pháp được sử dụng để chế tạo màng sinh học cũng như độ nhám của bề mặt màng. Nghiên cứu lưu biến học cung cấp thông tin về khả năng điện spinning của các dung dịch/phân tán polymer. Các hạt nano bạc ảnh hưởng lớn đến khả năng điện spinning của các phân tán polymer do sự gia tăng độ nhớt động học khi hàm lượng bạc tăng lên. PU nguyên chất và PU được bổ sung với hàm lượng AgNPs thấp hơn 0.3% cho thấy sự phát triển tế bào cao và tính tương thích sinh học tốt. Các màng nanobionanocomposite PU–EM–Ag điện spinning mang lại lợi thế khi sử dụng lượng nhỏ các thành phần sinh học hoạt động và diệt khuẩn. Các màng nanobionanocomposite bạc thu được có độ sinh học tốt và không độc hại cần thiết cho các ứng dụng thiết bị y sinh. Các màng nanobionanocomposite thu được được dự đoán sẽ được ứng dụng cho các thiết bị y tế như catheter tiểu tiện, băng vết thương, v.v.
Từ khóa
#bionanocomposite #polyurethane #hạt nano bạc #tính tương thích sinh học #ứng dụng y sinhTài liệu tham khảo
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