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4篇 您的检索式:作者名="SIDDIQ Mohammad"
    题名 作者 年代 出处 被引量
1Temperature Dependence of Chain Conformation and Local Rigidity of Isomerized Polyimides in Dimethyl Formamide显示文摘LIU Gui-hua QIU Xue-peng SIDDIQ Mohammad BO Shu-qin JI Xiang-ling 2013Chemical Research in Chinese Universities2013,29,5:4
2Thermal and pH Dual Responsive Copolymer and Silver Nanoparticle Composite for Catalytic Application显示文摘N-Isopropylacrylamide and vinyl imidazole copolymer,P(NIPAM-co-VI),was synthesized by free radical emulsion polymerization.Then,the copolymer and silver nanoparticle composite,P(NIPAM-co-VI)-Ag,was pre-pared by in situ reduction of AgNO3 with NaBH4.Due to the coexistence of thermal-responsive PNIPAM and pH-responsive PVI,P(NIPAM-co-VI)and P(NIPAM-co-VI)-Ag exhibited both thermal and pH responsibility,their size would change while altering the temperature or pH of the circumvent.Their thermal and pH dual responsive properties were studied by dynamic light scattering(DLS).P(NIPAM-co-VI)-Ag could be stably dispersed in water at a pH range from 3.0 to 9.3,which is favorable to use P(NIPAM-co-VI)-Ag as a catalyst in the reduction reaction of p-nitrophenol.The reaction rate constant(kapp)increased with the decrease of pH or the increase of VI content in the copolymer.Luqman Ali Shah Wulian Chen Mohammad Siddiq Jianhua Hu Angang Dong Dong Yang 2015Chinese Journal of Chemistry2015,33,4:0
3GRAFTING 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
4MICELLAR 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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