کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7790979 | 1500646 | 2014 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and surface modification of polyurethanes with chitosan for antibacterial properties
ترجمه فارسی عنوان
سنتز و اصلاح سطح پلی اورتان با کیتوزان برای خواص ضد باکتری
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کلمات کلیدی
پلی اورتان، کیتوزان، اصلاح سطح، ضد باکتری، چسبندگی باکتریایی،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
چکیده انگلیسی
Surface modification and providing antibacterial properties to the materials or devices are getting great attention especially in the last decades. In this study, polyurethane (PU) films were prepared by synthesizing them in medical purity from toluene diisocyanate and polypropylene ethylene glycol without using any other ingredients and then the film surfaces were modified by covalent immobilization of chitosan (CH) which has antibacterial activity. CH immobilized PU films (PU-CH) were found to be more hydrophilic than control PU films. Electron Spectroscopy for Chemical Analysis (ESCA) and Atomic Force Microscopy (AFM) analyses showed higher nitrogen contents and rougher surface topography for PU-CH compared to PU films. Modification with CH significantly increased antibacterial activity against Gram positive (Staphylococcus aureus) and Gram negative (Pseudomonas aeruginosa) bacteria. It was observed that the number of bacteria colonies were less about 102-105Â CFU/mL and number of attached viable bacteria decreased significantly after CH modification of PU films.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 112, 4 November 2014, Pages 39-47
Journal: Carbohydrate Polymers - Volume 112, 4 November 2014, Pages 39-47
نویسندگان
Filiz Kara, Eda Ayse Aksoy, Zehranur Yuksekdag, Nesrin Hasirci, Serpil Aksoy,