简介：

简介：LaTex是一个强大的排版工具，用它编写的文件可以方便地转换成现今流行的各种格式(包括．html、．pdf、．doc和．ps等)。许多Linux发行版中都提供LaTex。但是，LaTex不支持中文，要使它处理中文需要一个CJK子集。

简介：半--压克力吃了的乙酸乙烯酯和丁基的连续播种乳剂copolymerizalion作为胶体stabilizer与hydroxyethyl纤维素被执行。在反应时间和平均粒子直径and/或变换比率之间的乳胶粒子和关系的形态学在聚合期间被调查。试验性的结果证明乳胶粒子的形态学拥有稳定的位的构造。Inthe播种了聚合，当变换比率增加了时，乳胶的平均粒子直径减少了。在乳剂copohmerization(粒子尺寸的生长阶段)的第二个术语，乳胶粒子一般水准直径连续地与共聚化合物增加了，但是。即时谈话比率不大，因此适当地在成立温度阶段期间延长时间是很必要的。

简介：Polydimethylsiloxane(PDMS)rubberlatexwithtwosortsofsensitizers,trimethylolpropanetri-methacrylate(TMPTMA)anddiethyleneglycoldi-acrylate(DEGDA),wasirradiatedwithγ-raysandelectronbeamsinvariousconditions.TheradiationcrosslinkingreactionofPDMSoccursintheinnerphaseofthelatexandisrelativelyisolatedfromthewaterphase.Thereforetheoxygenandtheradicalsproducedbytheradiolysisreactionofwateralmosthavenoeffectonthecrosslinkingreactionofpolymer.TheexperimentaldatacorrespondwiththeCharlesby-Pinnerrelationshipinthemain.Thegelationdoses,degreeofcrosslinkinganddegradationaswellasGvaluesofcrosslinkingwerecalculated.Fromthem,thesensitizationcoefficientswerederivedtoofferaquantitativemeasurementoftheenhancingeffectofsensitizerontheradiationcrosslinking.

简介：Toelucidatethemechanismofbrominatednaturalrubber(BNR),eightBNRsampleswithdifferentbrominecontentwerepreparedfromlatexindifferentbrominationtime,andthemicrostructureswerecharacterizedbyFouriertransforminfraredspectroscopy(FTIR)and1H-NMRspectroscopy,respectively.ThehardnessofBNRincreasedanditsnaturetransformedfromelastomertoresinwiththeincreaseofbrominecontent.Unlikechlorinatednaturalrubber(CNR),FTIRshowedthattherewerenocarbonylgroupsonthemolecularchainsofBNR.1H-NMRspectroscopyrevealedthatthereactionactivityofbromineandthesecondaryhydrogenatomofBNRweremuchhigherthanthoseoftheprimaryone.ThebrominatedsubstitutiontookplaceinthehydrogenatomofCH3andCH2groupsfirstly,theninthelateperiodofbrominationthebondofC=CwastransferredtothesaturatedbondofC-CduetotheMarkovnikovadditionofhydrogenbromide.Basedonthesefindings,themechanismofBNRfromlatexcouldbededucedasafreeradicalreactionandthedetailedbrominationprocesswaspresented.

简介：Emulsifier-freeemulsionpolymerizationofstyreneinthepresenceofβ-hydroxypropylacrylatewasstudied.Theemulsifier-freeselfcrosslinkedpolystyrenelatexmicrosphereswasobtained.Monomerconversionishigherthan90%when[St],[β-HPA],[KPS]is2.66,0.228,and5.8×10^-3mol/Lrespectivelyunder80℃for5h.Themono-dispersedlatexparticlediameterandcolloidalparticleconcentrationweregivenasD=0.23um,N=3.13×10^13/cm^3byTEManalyse,Thefactorsofinfluencinglatexstabilitywerediscussed.ThecopolymerwascharacterizedbyIRanddissolutionexperiment.Theapparentactivationenergyofpolymerizationandpolymerizationrateconstantwereobtainedtobe78.7KJ/moland514.4/mol.srespectively.

简介：Alkali-solubleassociativelatexthickenersmodifiedwithhydrophobiclongchainalkylgroupswerepreparedusingcommonacrylicsandvaryingamountofafunctionalmonomer,ethoxylatedbehenylmethacrylate(BEM),throughemulsionpolymerization.ItwasfoundthatthesizeoftheemulsionparticlebecamelargerwithadditionofBEM.ThelighttransmittanceofthethickenerlatexsharplyincreasedwithpHvariedfrom6to7.Theassociativelatexthickenermanifestedahigherviscositywhensolidsinthelatexthickenerswerekeptat0.5wt%orhigher,andtheoptimalamountofBEMwasfoundtobearound2.5wt%,or0.16mol%.AllthickenerlatexesmodifiedwithBEMhavebettershearingresistancethantheBEM-freethickener.

简介：Muchattentionhasbeenpaidtothedevelopmentofnewpolymerelectrolytewithspecialmorphology,soastoimprovetheirelectrochemicalpropertiestomeettheneedsoflithium(ion)battery.Inthiswork,PEMlatexwassynthesizedbyemulsion-fi-eepolymerization.ThemicrophotoofPEMlate...

简介：Cationic乳胶与cationic表面活化剂通过苯乙烯(圣)和丁基acrylate(BA)的乳剂copolymerization被准备，cetyltrimethyl铵溴化物(CTAB)。包括粒子尺寸，乳胶性质缩放分发，潜力，表面紧张和单体变换，为与不同CTAB数量准备的乳胶被决定。这些性质的进化在乳剂聚合期间被跟随以便理解粒子形成的机制。结果证明粒子尺寸和潜力是聚合时间和乳胶固体的功能。有cationic的平行乳剂聚合，anionic控告了开始者，没有费用的开始者也被执行，乳胶性质在不同聚合时间被决定。所有这些结果专心地基于乳剂聚合，表面活化剂吸附和乳胶粒子稳定的机制被解释。

简介：用LaTeX编辑的pdf格式幻灯片,由于LaTeX不支持插入或链接*.swf文件,使得幻灯片的动态效果不尽如人意,提出一种间接解决方案以供LaTeX爱好者参考.

简介：Aseriesofpoly(2-acetoxyethylmethacrylate)/polystyrene(PAEMA/PS)latexinterpenetratingpolymernetworks(LIPNs)werepreparedbyseededsoap-freeemulsionpolymerizationofstyreneonthecrosslinkedPAEMAseedparticlesusinganoil-solubleinitiator.ThesePAEMA/PSLIPNsshowedawell-definedphase-separatedstructurewithPSphasedispersingincontinuousPAEMAphase.ThedomainsizeofPSphasewasfoundtodependonthecrosslinkingdegreeofPAEMAseedparticlesandtheamountofsecond-stagestyrenemonomer.

简介：有在粒子的核心的高carboxyl内容的没有肥皂的吸水恐水病的核心壳乳胶粒子经由播种乳剂被综合聚合使用甲基methacrylate(MMA)，丁基acrylate(BA)，甲基丙烯酸(MAA)，苯乙烯(圣)和乙烯乙二醇dimethacrylate(EGDMA)作为单体，并且在聚合，粒子尺寸和形态学上在核心准备使用的MMA内容的影响被传播电子显微镜学调查，动态轻散布结果证明播种乳剂聚合能用当在核心准备的MAA内容是时，喂过程的饥饿的单体顺利被执行平等者到或不到24wt%，并且有恐水病的PSt壳的吸水的P(MMA-BA-MAA-EGDMA)核心的包含的效率随MAA内容的增加减少了。当有中等极性的P(MMA-MAA-St)的夹层在P(MMA-BA-MAA-EGDMA)核心和PSt壳之间被插入时，井在核心准备与24wt%MAA内容设计了没有肥皂的吸水恐水病的核心壳乳胶粒子被获得。