搜索:  
Response in Melt Viscosity of Polystyrene with Different Topological Structure after Adding Isotropic Nanoparticles  
Response in Melt Viscosity of Polystyrene with Different Topological Structure after Adding Isotropic Nanoparticles
资料类型: PDF文件
关键词: nanoparticles  rheology  polystyrene  star  polymer  
资料大小: 105K
所属学科: 分子表征
来源: 第六届亚欧研讨会上处理和性能增强聚合物会议文集(2013.6.2-6 武汉)
简介:
Polymernanocompositesfabricatedbydispersingnanoparticlesinpolymermatriceshavethepotentialforperformancethatfarexceedstraditionalcomposites.Recently,theadditionofisotropicnanoparticletolinearpolymersledtonegativeviscositychange,suchasC600rFe304inpolystyrene(PS)cl],polysilicatesinPDMSc2]andpolyhedraloligosilsesquioxane(POSS)inHDPEc3]etal.Onsummarizingthedatareported,therearethreeconditionstobesatisfied:i)Particlesbeingsmallerthatthetuberadiusforthepolymer;ii)Thepolymerbeingabovetheentanglementmolecularweight;iii)Theparticlespacingbeingontheorderofthepolymerradiusofgyration.Inthiswork,theologicalbehaviourofthree-armandsix-armstarpolystyrene(SPS)withasmallamountofC600rPOSSwasstudied.Boththelinearoscillationfrequencysweep(linear)andsteadyshearnonlineartheologyofSPSnanocompositesshoweddecreasedviscosityintheunentangledSPSmatrix,butreinforcementintheentangledSPSmatrix.Inparticular,whenmolecularweightofthearm(Ma)ofSPSwassmallerthanthecriticalmolecularweightforentanglement(Mc)ofPS,thezeroshearviscosity(770)ofSPSnanocompositeswithlowcontentofnanoparticleswaslowerthanthatofpureSPS.TheseresultswerecontrarytothepreviousworkaboutthemeltviscositybehavioroflinearPS(LPS)/C60composites[l].ThepossiblemechanismbehindthemeltviscositybehaviorofSPSnanocompositeswasdiscussed.
作者: H. Y. Tan, D. H. Xu , J. 2heng, D. Wad , T. Tang
上传时间: 2013-06-26 14:16:10
下载次数: 1
消耗积分: 2  
立即下载:
1人
1人
1人
友情提示:下载后对该资源进行评论,即可奖励2分。
报告错误:  1.下载无效  2. 资料明显无价值  3. 资料重复存在

相关评论 共有0人发表评论 更多评论
你还没有登录,无法发表评论,请首先 登录 注册
免责声明:本站部分资源由网友推荐,来自互联网,版权属于原版权人,如果不慎侵犯到您的权利,敬请告知,我们会在第一时间撤除。本站中各网友的评论只代表其个人观点,不代表本站同意其观点。