کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5022016 | 1469475 | 2017 | 32 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effect of dopamine modified titanium dioxide nanoparticles on the performance of Poly (vinyl alcohol)/titanium dioxide composites
ترجمه فارسی عنوان
اثر نانوذرات دی اکسید تیتانیوم اصلاح شده بر روی عملکرد پلی اتیلن (الماس وینیل) / کامپوزیت دی اکسید تیتانیوم
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کلمات کلیدی
پلی وینیل الکل)، دی اکسید تیتانیوم، ویژگی های مکانیکی، پایداری حرارتی،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
چکیده انگلیسی
In order to improve the dispersion of nanoparticles (NPs) and enhance the interfacial interactions between NPs and Poly (vinyl alcohol) (PVA) matrix, the surface of titanium dioxide (TiO2) was modified by green and biocompatible dopamine (DA). PVA composites containing TiO2 or modified TiO2 (DA-TiO2) were fabricated through simple one-step method. The as-prepared composites were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), tensile experiments and thermogravimetric analysis (TGA). The TEM images demonstrated that DA-TiO2 NPs were dispersed well in the PVA matrix, which may originate from the hydrogen bonding and covalent bond formed between PVA and DA-TiO2 NPs. The tensile experiments exhibited significant improvement for the mechanical properties of PVA composites with proper amount of DA-TiO2 NPs. Especially, the PVA composites with 1Â wt% DA-TiO2 NPs displayed the desired consequences in terms of tensile strength and toughness, compared to the pure PVA, which were increased by 47.9% and 145.2%, respectively. The TGA curves showed that DA-TiO2 NPs enhanced the thermal stability of PVA. Additionally, PVA/DA-TiO2 composite showed relatively good optical transparency and water resistance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 150, 29 September 2017, Pages 120-127
Journal: Composites Science and Technology - Volume 150, 29 September 2017, Pages 120-127
نویسندگان
Feifei Deng, Yu Guan, Zhiqing Shi, Fei Wang, Xinyuan Che, Yawei Liu, Yinghan Wang,