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3篇 您的检索式:作者名="Iram Bibi"
    题名 作者 年代 出处 被引量
1A Review Featuring Fabrication, Properties and Applications of Carbon Nanotubes(CNTs) Reinforced Polymer and Epoxy Nanocomposites显示文摘Carbon nanotubes(CNTs) have long been recognized as the stiffest and strongest man-made material known to date. In addition, their high electrical conductivity has roused interest in the areas of electrical appliances and communication related applications. However, due to their miniature size, the excellent properties of these nanostructures can only be exploited if they are homogeneously embedded into light-weight matrices as those offered by a whole series of engineering polymers. In order to enhance their chemical affinity to engineering polymer matrices, chemical modification of the graphitic sidewalls and tips is necessary. The mechanical and electrical properties to date of a whole range of nanocomposites of various carbon nanotube contents are also reviewed in this attempt to facilitate progress in this emerging area. Recently, carbonaceous nano-fillers such as graphene and carbon nanotubes(CNTs) play a promising role due to their better structural and functional properties and broad range of applications in every field. Since CNTs usually form stabilized bundles due to van der Waals interactions, they are extremely difficult to disperse and align in a polymer matrix. The biggest issues in the preparation of CNTs reinforced composites reside in efficient dispersion of CNTs into a polymer matrix, the assessment of the dispersion, and the alignment and control of the CNTs in the matrix. An overview of various CNT functionalization methods is given. In particular, CNT functionalization using click chemistry and the preparation of CNT composites employing hyperbranched polymers are stressed as potential techniques to achieve good CNT dispersion. In addition, discussions on mechanical, thermal, electrical, electrochemical and applications of polymer/CNT composites are also included.Sobia Imtiaz Muhammad Siddiq Ayesha Kausar Sedra Tul Muntha Jaweria Ambreen Iram Bibi 2018Chinese Journal of Polymer Science2018,36,4:11
2GRAFTING OF POLY(SODIUM STYRENESULFONATE) ONTO GOLD SURFACE FROM NaNO_3 SOLUTION显示文摘The chemical grafting of thiol terminated poly(sodium styrenesulfonate)(HS-PSSS) chains from sodium nitrate (NaNO3) salt solution to a gold surface was investigated with a quartz crystal microbalance with dissipation monitoring (QCM-D) in different salt concentrations.It was found that at low salt concentration grafting density of HS-PSSS was low and the grafted chains adopted a mushroom conformation.With the increase of salt concentration polyelectrolyte chains underwent a transition toward coiled state due to reduction of electrostatic repulsion and as a result more chains were grafted on the surface.When the grafting density reached a certain limit after which further grafting caused repulsion between already grafted HS-PSSS chains and as a result grafted chains adopted a brush conformation.Iram Bibi Mohammad Siddiq 2011Chinese Journal of Polymer Science2011,29,5:0
3MICELLAR PARAMETERS OF DIBLOCK COPOLYMERS AND THEIR INTERACTIONS WITH IONIC SURFACTANTS显示文摘(oxyethylene/oxybutylene )(E39B18 ) 非离子的 amphiphilic diblock 共聚物的相互作用被使用象散布的表面紧张,电导率,不变的荧光和动态光那样的各种各样的技术 poly 与 anionic 表面活化剂钠 dodecyl 硫酸盐(SDS ) 和 cationic 表面活化剂 hexadecyltrimethylammonium 溴化物(CTAB ) 学习。表面紧张大小被用来决定批评 micelle 集中(CMC ) 并且从而 micellization (G mic ) 的免费精力,吸附(G 广告) 的免费精力,表面过量集中() 并且最小的区域每分子(A) 。传导性大小被用来决定批评 micelle 集中(CMC ) ,批评聚集集中(CAC ) ,聚合物浸透点(PSP ) ,电离的度() 并且相反的离子绑定() 。动态轻散布实验被执行在块共聚物微粒的 physiochemical 性质检查变化由于和离子的表面活化剂的 diblock 共聚物的相互作用发生。第一和第三座电子振动的山峰的比率(我 1/I 3 ) 显示了分核的极性微环境并且象聚合物表面活化剂相互作用一样被用于 micelle 的察觉。聚集数字(N) ,有约束力的地点(n) 的数字和为纯表面活化剂以及为聚合物表面活化剂的绑定(G b ) 的免费精力混合了 micellar 系统被熄灭方法的荧光决定。Noor Rehman Abbas Khan Iram Bibi Mohammad Siddiq 2012Chinese Journal of Polymer Science2012,30,2:0
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