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 (vinyl acetate) Based Amphiphilic Surfactant by RAFT/ATRP Polymerization and Preparation Macroporous Materials by Emulsion-templating Polymerization  
Synthesis of Poly (vinyl acetate) Based Amphiphilic Surfactant by RAFT/ATRP Polymerization and Preparation Macroporous Materials by Emulsion-templating Polymerization
資料類型: PDF文件
關鍵詞: Amphiphilic  block  copolymers  RAFT/ATRP  C02  -in-water  emulsion  
資料大小: 104K
所屬學科: 分子表征
來源: 第六屆亞歐研討會上處理和性能增強聚合物會議文集(2013.6.2-6 武漢)
簡介:
Supercriticalcarbondioxide(scC02)isanattractivealternativetoconventionalsolventscl].However,scC02issofeeblethatmostofpolymersandpolarmassesaredifficulttodissolveinit,whichlimitsitsapplications.Thisproblemcanbeovercamebypreparingemulsionormicroemulsionbyusingamphiphilicsurfanctants.Althoughfluoro-orsilicone-basedsurfactantsshowgoodperformanceinscC02,thehighcostisprohibitiveonanindustrialscaleapplication.Recently,thereisanincreasingdrivetodiscoverC02-philichydrocarbonmaterialswithlow-cost,suchaspoly(vinylacetate)(PVAc),etal,whichcanbealsopreparedstabilisers,amphiphilicsurfactants.[2]Mostofhydrocarbon-basedsurfanctantsreportedintheliteraturesfocusonnon-ionicsurfactants,andthereisfewreportsaboutionicsurfactant.[3]Inthisstudy,anewionicsurfactantpoly(vinylacetate)-b-poly(dimethylaminoethylmethacrylate)(PVAc-b-PDMEMA)wassynthesizedbyacombinationofRAFTandATRPmethodsbyusingabromoxanthateiniferteraschaintransferagent(CTA).ThehydrophilicabilityofPVAc-b-PDMAEMAcopolymerscanbetunedbycontrollingthemolecularchainlength,orpHvalueofthesolution.ItisfoundthatPVAc-trPDMAEMAcopolymersareeffectivesurfactantsforC02-in-wateremulsionswithhighstability.Polymerizationofemulsion-templatingformedbyacrylamide(AM)solution/C02system,PAMmonolithsmaterialswhichconformcloselytotheinteriorofthereactionvesselareobtained.TheaverageporesizeofthemonolithsmaterialswhichiscalculatedbySEManalysisrangesfrom10-25ym.
作者: S. C. Zhang, W. Luo, B. E. Tan
上傳時間: 2013-07-04 16:03:18
下載次數: 1
消耗積分: 2  
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: 渑池县| 饶河县| 勃利县| 石家庄市| 康马县| 剑阁县| 枣庄市| 武威市| 镇安县| 藁城市| 江山市| 枞阳县| 桓台县| 定安县| 衡阳县| 和林格尔县| 大同市| 兴城市| 弋阳县| 博野县| 正蓝旗| 德州市| 荥阳市| 竹溪县| 天祝| 讷河市| 根河市| 佛学| 温宿县| 黄骅市| 浦县| 衡阳县| 稷山县| 丘北县| 南华县| 蒙阴县| 项城市| 湘阴县| 望谟县| 冀州市| 开远市|