کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9809730 | 1517714 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Surface characterization of thin film induced by He+ ion-beam irradiation into PLLA
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Ion beams were irradiated into biodegradable polymer sheets to develop thin film, self-assembled cellular sheets that exfoliated spontaneously from the substrates in a water solution. We previously reported that thin film and self-assembled cellular sheet were obtained by irradiating He+ ion beams into biodegradable polymer sheets. However, the mechanisms of exfoliation from the substrates have not been clarified. Poly-l-lactic acid (PLLA) sheets were used as substrates. He+ ion-beams were irradiated at an energy of 150 keV with a fluence of 1Ã1015 ions/cm2. We investigated surface characteristics of He+ ion-beam-irradiated PLLA by means of SAICAS, SIMS, FT-IR-ATR and Raman scattering measurements. Ion-beam-irradiated exfoliated thin films had two layers, a harder layer than the original and a softer one. He+ ion-beam-irradiated exfoliated thin film included a disordered graphite structure produced by ion-beam irradiation. We concluded that thin film and self-assembled cellular sheets could be obtained by He+ ion-beam irradiation into PLLA using localized energy deposition.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 196, Issues 1â3, 22 June 2005, Pages 383-388
Journal: Surface and Coatings Technology - Volume 196, Issues 1â3, 22 June 2005, Pages 383-388
نویسندگان
Tasuku Yotoriyama, Yoshiaki Suzuki, Takaya Mise, Takeyo Tsukamoto, Masaya Iwaki,