Superhydrophobic Polyimide via Ultraviolet Photooxidation: The Evolution of Surface Morphology and Hydrophobicity under Different Ultraviolet Intensities
المؤلفون المشاركون
Gu, Hongyu
Song, Lixin
Zhang, Jinlin
Qi, Zhenyi
المصدر
العدد
المجلد 2015، العدد 2015 (31 ديسمبر/كانون الأول 2015)، ص ص. 1-7، 7ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2015-08-03
دولة النشر
مصر
عدد الصفحات
7
التخصصات الرئيسية
الملخص EN
Ultraviolet (UV) photooxidation has recently been developed to fabricate superhydrophobic polyimide (PI) films in combination with fluoroalkylsilane modification.
However, it remains unclear whether the surface morphology and hydrophobicity are sensitive to technical parameters such as UV intensity and radiation environment.
Herein, we focus on the effects of UV intensity on PI surface structure and wettability to gain comprehensive understanding and more effective control of this technology.
Scanning electron microscopy (SEM) and atomic force microscopy (AFM) results showed that UV intensity governed the evolutionary pattern of surface morphology: lower UV intensity (5 mW/cm2) facilitated in-plane expansion of dendritic protrusions while stronger UV (10 and 15 mW/cm2) encouraged localized growth of protrusions in a piling-up manner.
Surface roughness and hydrophobicity maximized at the intensity of 10 mW/cm2, as a consequence of the slowed horizontal expansion and preferred vertical growth of the protrusions when UV intensity increased.
Based on these results, the mechanism that surface micro/nanostructures developed in distinct ways when exposed to different UV intensities was proposed.
Though superhydrophobicity (water contact angle larger than 150°) can be achieved at UV intensity not less than 10 mW/cm2, higher intensity decreased the effectiveness.
Therefore, the UV photooxidation under 10 mW/cm2 for 72 h is recommended to fabricate superhydrophobic PI films.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Gu, Hongyu& Song, Lixin& Zhang, Jinlin& Qi, Zhenyi. 2015. Superhydrophobic Polyimide via Ultraviolet Photooxidation: The Evolution of Surface Morphology and Hydrophobicity under Different Ultraviolet Intensities. Journal of Nanomaterials،Vol. 2015, no. 2015, pp.1-7.
https://search.emarefa.net/detail/BIM-1069118
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Gu, Hongyu…[et al.]. Superhydrophobic Polyimide via Ultraviolet Photooxidation: The Evolution of Surface Morphology and Hydrophobicity under Different Ultraviolet Intensities. Journal of Nanomaterials No. 2015 (2015), pp.1-7.
https://search.emarefa.net/detail/BIM-1069118
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Gu, Hongyu& Song, Lixin& Zhang, Jinlin& Qi, Zhenyi. Superhydrophobic Polyimide via Ultraviolet Photooxidation: The Evolution of Surface Morphology and Hydrophobicity under Different Ultraviolet Intensities. Journal of Nanomaterials. 2015. Vol. 2015, no. 2015, pp.1-7.
https://search.emarefa.net/detail/BIM-1069118
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1069118
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر