Evaluation of hydrophilic properties of acrylonitrile/acrylic acid copolymer films dendrigrafted with citric acid

سال انتشار: 1396
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 635

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شناسه ملی سند علمی:

JR_POJ-4-2_005

تاریخ نمایه سازی: 2 آبان 1396

چکیده مقاله:

The present study investigates the hydrophilic properties of acrylonitrile/acrylic acid P(AN/AA) copolymer films with various acrylic acid (AA) contents dendrigrafted with citric acid from zero to fourth generation numbers. It was found that the hydrophilicity of the dendrigrafted films was a complicated phenomenon. Various parameters such as intermolecular hydrogen bonding, roughness and active functional groups affected the wettability of the film samples measured via static contact angle. The results revealed that the hydrophilicity decreased with increasing the generation number owing to the steric hindrance of terminal groups. However, active functional group increased by rising generation numbers which was confirmed using zeta potential measurement. Furthermore, the percentage conversion of the reactions showed a reduction with increasing generation number and AA content which was in agreement with the reduction in wettability corresponding to the higher contact angle. On the other hand, zeta potential as well as roughness of the films increased with successive generations.

نویسندگان

Somaye Akbari

Department of Textile Engineering, Amirkabir University of Technology, Tehran, Iran

Niloofar Eslahi

Department of Textile Engineering, Amirkabir University of Technology, Tehran, Iran|Department of Textile Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran

Mohammad Haghighat Kish

Department of Textile Engineering, Amirkabir University of Technology, Tehran, Iran