کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5349036 1503640 2015 25 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Correlation between dynamic wetting behavior and chemical components of thermally modified wood
ترجمه فارسی عنوان
همبستگی بین رفتار خیساندن پویا و اجزای شیمیایی چوب اصلاح شده
کلمات کلیدی
رفتار خیس شدن پویا، چوب اصلاح شده با حرارت مدل رطوبت اجزای شیمیایی، همبستگی،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
چکیده انگلیسی
In order to investigate the dynamic wetting behavior of thermally modified wood, Cathay poplar (Populus cathayana Rehd.) and Scots pine (Pinus sylvestris L.) samples were thermally modified in an oven at 160, 180, 200, 220 or 240 °C for 4 h in this study. The dynamic contact angles and droplet volumes of water droplets on modified and unmodified wood surfaces were measured by sessile drop method, and their changing rates (expression index: K value and wetting slope) calculated by wetting models were illustrated for mapping the dynamic wetting process. The surface chemical components were also measured by X-ray photoelectron spectroscopy analysis (XPS), thus the relationship between dynamic wetting behavior and chemical components of thermally modified wood were determined. The results indicated that thermal modification was capable of decreasing the dynamic wettability of wood, expressed in lowing spread and penetration speed of water droplets on wood surfaces. This change was more obvious with the increased heating temperature. The K values varied linearly with the chemical components parameter (mass loss, O/C ratio, and C1/C2 ratio), indicating a strong correlation between dynamic wetting behavior and chemical components of thermally modified wood.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 324, 1 January 2015, Pages 332-338
نویسندگان
, , , ,