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

當前位置:群英聚首 > 論文著作 > 正文
[Nanoscale] Enhanced nanoflow behaviors of polymer melts using dispersed nanoparticles
來源:孔杰教授個人網站 發(fā)布日期:2012-08-07
作者:Wei Tian, Kai-Leung Yung, Yan Xu, Longbiao Huang, Jie Kong, Yunchuan Xie,
關鍵字:Nanoflow behaviors of polymer melts
論文來源:期刊
具體來源:Nanoscale, 2011, 3, 4094–4100
發(fā)表時間:2011年

In the micro/nano fabrication of polymer nanostructures, a key factor is the favorable nanoflow behavior of polymer melts. Compared with the fluidic hydrodynamics of simple liquids through micro- or macrochannels, the nanoflow behavior of polymer melts, however, is affected much more by nanoscale effects and surface interactions. Therefore, achieving a favorable nanoflow of polymer melts in nanochannels is the key to fabricate high quality polymer nanoproducts. In this paper, the improved nanoflow behaviors of polystyrene melts in ordered porous alumina templates with the addition of nanoparticles and ultrasonic vibration were reported for the first time. Compared with bulk polystyrene (PS), the nanoflow rate of PS melts was enhanced when nanoparticles, such as surfacemodified nano-silica (nano-SiO2) or b-cyclodextrin (b-CD), were added in a dispersed phase into a polystyrene matrix due to the decrease of the melts’ viscosity caused by interactions between nanoparticles and PS segments. The enhancement action of b-CD was observed to be more significant than that of nano-SiO2 based on the adsorption and the supramolecular self-assembly interactions between PS  segments and b-CD. The enhanced nanoflow rate has shown to be more pronounced under ultrasonic vibration than those of the static condition and the low frequency vibration attributed to the synergetic effects of mechanical vibration and ultrasonic oscillation. The nanoflow rate of polymer melts increases with the gradual increase of vibration frequency. The optimal nanoflow behavior can be obtained by simultaneously adding b-CD as dispersed phase into PS matrix and applying ultrasonic vibration in one nanoflow system. These new findings will help the preparation of polymer-based functional nanocomposites, ultrasonic vibrationassisted nanofluidics, and micro/nano injection molding etc.

Copyright © 2005 Polymer.cn All rights reserved
中國聚合物網 版權所有
經營性網站備案信息

京公網安備11010502032929號

工商備案公示信息

京ICP證050801號

京ICP備12003651號

主站蜘蛛池模板: 象山县| 中超| 同仁县| 湘阴县| 洞口县| 建水县| 清流县| 丰原市| 读书| 清丰县| 积石山| 衡南县| 册亨县| 五原县| 鹿邑县| 互助| 铁岭市| 宁远县| 灵丘县| 青神县| 曲麻莱县| 清远市| 南康市| 曲水县| 青冈县| 竹溪县| 花莲县| 通州市| 虞城县| 互助| 前郭尔| 内江市| 晴隆县| 池州市| 肥西县| 胶南市| 上蔡县| 扎鲁特旗| 全椒县| 三穗县| 资中县|