کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5022245 1469483 2017 24 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Surface initiated grafting of polymer chains on carbon nanotubes via one-step cycloaddition of diarylcarbene
ترجمه فارسی عنوان
سطح شروع پیوند زنجیره های پلیمری را در نانولوله های کربنی بوسیله یک سیکل جاذب دیائیار کربن
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
چکیده انگلیسی
In the present study, we report a direct and nondestructive method to functionalize carbon nanotubes (CNTs). Novel highly reactive diarylcarbene derivative is designed and synthesized. Different to previous approaches, this diarylcarbene contains atomic transfer radical polymerization (ATRP) initiator segments, which can serve as starting points for further polymer grafting. Then, the initiator segments are covalently bonded to the CNTs via one-step cycloaddition of diarylcarbene and the succeeding ATRP links polystyrene (PS) chains to the CNTs. In order to further verify the effectiveness of modification, we use the obtained CNTs (PS-fCNTs) as reinforcement to enhance PS films. By addition 0.5 wt% PS-fCNTs, the PS composite films reveal 79.3 and 85.2% increases in tensile strength and Young's modulus. The protocol is believed to offer alternate strategy to modify the CNTs and greatly expand the application field of CNTs in material science.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 142, 12 April 2017, Pages 294-301
نویسندگان
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