کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5186566 1381107 2006 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Multiwalled carbon nanotube/polybenzoxazine nanocomposites: Preparation, characterization and properties
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Multiwalled carbon nanotube/polybenzoxazine nanocomposites: Preparation, characterization and properties
چکیده انگلیسی

A novel nanocomposite composed of polybenzoxazine (PBZ) and multiwalled carbon nanotubes (MWNT) was prepared successfully. The surface modification of MWNT, including nitric acid modification followed by toluene-2,4-diisocyanate (TDI) treatment, introduced hydroxyl, carboxyl, and isocyanate groups on the MWNT surface. The surface carboxyl groups catalyzed the ring-opening reaction of benzoxazine and thus decreased the curing temperature of the system. The isocyanate groups reacted with the phenolic hydroxyl groups generated by the ring opening of benzoxazine resulting in the significant improvement of the adhesion between PBZ and MWNT. Dynamic mechanical analyses indicated the increase of storage modulus as well as Tg by the addition of MWNT into PBZ. A well dispersed modified-MWNT on nanoscale level inside PBZ matrix was observed by TEM and SEM.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 47, Issue 22, 18 October 2006, Pages 7711-7719
نویسندگان
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