کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10670803 | 1009008 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A novel process to form a silica-like thin layer on polyethylene terephthalate film and its application for gas barrier
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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
A novel process for polyethylene terephthalate (PET) surface modification with a silica-like thin layer is proposed. 3-Aminopropyltrimethoxysilane was employed to react with acetone to form dimethyliminopropyltrimethoxysilane (DIPTMS) after aging for 10 days at room temperature. After hydrolysis of alkoxy groups in DIPTMS, dimethylimine-modified silica clusters occurred resulting in an increase of the solution viscosity. Consequently, a dense and homogeneous thin layer was easily dip-coated onto a PET film. After heat treatment at 150 °C, a smooth, flexible and transparent silica-like film (about 70 nm thick) was formed via dehydration and condensation. The surface of the PET dramatically changed from hydrophobic (water contact angle: 70±2°) to hydrophilic (45±3°). As an attempt for application, a dense film of lithium metasilicate (Li2O·2SiO2·nH2O) was successfully prepared by dip coating on the modified PET film, which appeared very low oxygen permeability of about 0.17 cm3/m2 day atm at 23 °C and 85% humidity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 473, Issue 2, 14 February 2005, Pages 351-356
Journal: Thin Solid Films - Volume 473, Issue 2, 14 February 2005, Pages 351-356
نویسندگان
Peixin Zhu, Makoto Teranishi, Junhui Xiang, Yoshitake Masuda, Won-Seon Seo, Kunihito Koumoto,