نتایج جستجو برای: polyetherimide

تعداد نتایج: 148  

Journal: :Journal of the American Chemical Society 2005
Jason J Ge Dong Zhang Qing Li Haoqing Hou Matthew J Graham Liming Dai Frank W Harris Stephen Z D Cheng

Covalent attachment of a non-fluorinated polyetherimide onto the surface of carboxylic acid-functionalized multiwalled carbon nanotubes (MWNTs) has been achieved via grafting reactions. This confirms for the first time that the grafting reaction occurs at the nanotube surface when the carboxylic acid-functionalized MWNTs react with the polyetherimide with amine-terminated groups, through both a...

Journal: :Journal of Polymer Science: Polymer Letters Edition 1985

2014
Qiang Hu Bo Liang Ying Sun Xiao-Ling Guo Yi-Jie Bao Dong-Hao Xie Ming Zhou You-Rong Duan Pei-Hao Yin Zhi-Hai Peng

A large number of studies have shown that bufalin can have a significant antitumor effect in a variety of tumors. However, because of toxicity, insolubility in water, fast metabolism, short half-life, and other shortcomings, its application is limited in cancer therapy. In this study, we explored the anti-metastatic role of bufalin-loaded pluronic polyetherimide nanoparticles on HCT116 colon ca...

2015
Ye Chen Jing Tao Alaa Ezzeddine Remi Mahfouz Abdullah Al-Shahrani Niveen M. Khashab Vijay Kumar Thakur

Polyetherimide (PEI) is a widely applied as engineering plastic in the electronics, aerospace, and automotive industries but the disadvantages of extremely low conductivity, atmospheric moisture absorption, and poor fluidity at high temperature limits its application. Herein, commercial multi-walled carbon nanotubes (MWCNTs) were modified with a long alkyl chain molecule, octadecylamine (ODA), ...

2009
Ki-Young Kim Lin Ye Cheng Yan

(2005) Fracture behavior of polyetherimide (PEI) and interlaminar fracture of CF/PEI laminates at elevated temperatures. Abstract To investigate effects of environmental temperature on fracture behaviour of a polyetherimide (PEI) thermoplastic polymer and its carbon fibre (CF/PEI) composite, experimental and numerical studies were performed on compact tension (CT) and double cantilever beam (DC...

2017
Jialiang Yao Fenghua Zhao Chunyang Pan Jianle Zhuang

In this work, Er3+/Yb3+-codoped BaYF5 with different sizes and shapes have been synthesized by a simple solvothermal method. By changing the fluoride source, pH value, solvent, surfactants, Yb3+ concentration, temperature, and reaction time, the optimum synthetic conditions of BaYF5:Er3+, Yb3+ were found to improve the upconversion luminescent properties. It is found that the emission intensity...

2017
Victor M. Nazarychev Sergey V. Larin Alexey V. Lyulin Theo Dingemans Jose M. Kenny Sergey V. Lyulin

Crystallization of all-aromatic heterocyclic polymers typically results in an improvement of their thermo-mechanical properties. Nucleation agents may be used to promote crystallization, and it is well known that the incorporation of nanoparticles, and in particular carbon-based nanofillers, may induce or accelerate crystallization through nucleation. The present study addresses the structural ...

2017
M. Bosetti L. Nicolais L. Ambrosio M. Cannas Mario Cannas

When blood contacts the surface of a material, several processes take place including the activation of coagulation and immune systems. The aim of this work is to study in vitro the biological reactions seen from the point of view ofhemocompatibility and cytocompatibility of a new polymer suggested as an artificial surface for cardiovascular applications: CarbofiJm® coated polyetherimide (C®PEI...

2000
Laurent Louis Warnet

Two themes form the basis of this study on fibre reinforced laminated composites: namely 'thermal residual stress' and 'transverse cracking'. Thermal residual stresses are inherent to any composite structure and are internal stress within the structure that form during manufacture. Their formation arises from the difference in coefficient of thermal expansion of the fibre and the matrix. These ...

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