私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

相關鏈接
聯系方式
  • 通信地址:陜西省西安市長安南路199號 陜西師范大學 化學化工學院 079信箱
  • 郵編:710062
  • 電話:029-81530828
  • 傳真:
  • Email:yangpeng@snnu.edu.cn
當前位置:> 首頁 > 論文著作 > 正文
[Polymer] Confined photo-catalytic oxidation: a fast surface hydrophilic modification method for polymeric materials
作者:Yang P, Deng JY, Yang WT
關鍵字:surface oxidation; persulfates; surface modification
論文來源:期刊
具體來源:Polymer
發表時間:2003年

When a very thin persulfate salt aqueous solution layer (mum) was sandwiched between two polymer films and strong UV light irradiated the assembly from the side transparent to UV light, a fast surface hydrophilic modification method for most of commercial polymeric materials was developed. For example, irradiating for 90 s and using 30 wt% ammonium persulfate, the static surface water contact angles of polymeric substrates decreased from 100 to 44degrees for LDPE, from 107 to 34degrees for HDPE, and from 73 to 15degrees for PET. The increases in surface hydrophilicity came from the formation of a sulfate salt group (SO4-NH4+)-ionized surface, which was characterized by XPS and ATR-FTIR. The surface topography of the modified polymer substrates were observed by SEM and AFM, and no visible etching effect to original surface were found. A possible reaction model named by ''confined photo-catalytic oxidation'' was put forward to interpret the above results.

主站蜘蛛池模板: 湘西| 仁布县| 兴仁县| 娄底市| 长泰县| 怀柔区| 清远市| 兰州市| 唐山市| 新巴尔虎左旗| 襄汾县| 灵璧县| 长岛县| 唐河县| 张家界市| 汉川市| 武隆县| 嘉禾县| 衡南县| 龙南县| 南安市| 灌南县| 阿鲁科尔沁旗| 大连市| 松桃| 庄浪县| 仪陇县| 崇阳县| 武乡县| 天峻县| 桐梓县| 霍邱县| 乌什县| 惠来县| 绥芬河市| 辽阳市| 射阳县| 靖边县| 张掖市| 醴陵市| 长海县|