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

搜索:  
Synthesis of poly(arylene benzimidazole) sulfone (PABIS) and preparation of hollow PABIS microspheres  
Synthesis of poly(arylene benzimidazole) sulfone (PABIS) and preparation of hollow PABIS microspheres
資料類型: PDF文件
關鍵詞: poly(arylene  benzimidazole)  sulfone  N–C  coupling  reaction  micro-liquid  
technique  hollow  microsphere  
資料大小: 309k
所屬學科: 高分子物理
來源: 來源網絡
簡介:
4,4’-Di(benzimidazolyl)benzene sulfone, as the monomer, is very readily available by the reaction of 4,4’-dicarboxydiphenyl sulfone with o-phenylenediamine, and poly(arylene benzimidazole) sulfone (PABIS) has been synthesized by the condensation polymerization of bis(4-fluorophenyl) sulfone with di(benzimidazolyl)benzene sulfone via an N–C coupling reaction. The structure of the polymer was characterized by Fourier transform IR spectroscopy, 1H NMRspectroscopy and elemental analysis, and the results showed agreementwith the proposed structure. DSC and thermogravimetricmeasurements showed that PABIS possesses a high glass transition temperature (Tg =321 ?C) and good thermal stability with high decomposition temperature (Td >530 ?C). Additionally, PABIS exhibits good solubility in most polar organic solvents. Based on the good chemical and physical properties, hollow PABIS microspheres with diameters in the range 0.3–1.8mm were prepared by the micro-liquid technique and the double-layer latex technique. A new double T-channel droplet generator was developed for continuous fabrication of controlled-size hollow PABIS microspheres. The structures of the hollow PABIS microspheres were characterized, and they possessed equal wall thickness and good spherical symmetry.
上傳人: changguanjun
上傳時間: 2017-02-08 13:35:34
下載次數: 1
消耗積分: 0  
立即下載:
1人
1人
1人
友情提示:下載后對該資源進行評論,即可獎勵2分。
報告錯誤:  1.下載無效  2. 資料明顯無價值  3. 資料重復存在

相關評論 共有0人發表評論 更多評論
你還沒有登錄,無法發表評論,請首先 登錄 注冊
免責聲明:本站部分資源由網友推薦,來自互聯網,版權屬于原版權人,如果不慎侵犯到您的權利,敬請告知,我們會在第一時間撤除。本站中各網友的評論只代表其個人觀點,不代表本站同意其觀點。
主站蜘蛛池模板: 手游| 揭阳市| 宕昌县| 双流县| 中西区| 文化| 博爱县| 满城县| 依兰县| 福建省| 湖州市| 牟定县| 仁寿县| 海林市| 汝南县| 利辛县| 高台县| 黄石市| 宁陕县| 贡觉县| 介休市| 大悟县| 西昌市| 延津县| 乃东县| 长治县| 瓮安县| 句容市| 台山市| 离岛区| 建水县| 贡觉县| 桑日县| 岑溪市| 秦安县| 都昌县| 昌平区| 环江| 基隆市| 台东市| 灌南县|