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Novel heterocyclic poly(pyridine‐imide)s with unsymmetric carbazole substituent and noncoplanar structure: High thermal, mechanical and optical transparency, electrochemical, and electrochromic properties

21-11-2014 | Ying‐Chi Huang, Kun‐Li Wang, Wei‐Yi Lee, Yi‐An Liao, Der‐Jang Liaw, Kueir‐Rarn Lee, Juin‐Yih Lai, Journal of Polymer Science Part A: Polymer Chemistry, 2014

ABSTRACT A diamine containing heterocyclic pyridine and unsymmetrical carbazole substituents, 4‐(9‐ethyl‐3‐carbazole)‐2,6‐bis(4‐aminophenyl)pyridine (CBAPP), was prepared for use in the synthesis of poly(pyridine‐imide)s PI‐1–8 by direct polycondensation with dianhydrides in ...


Improving the performance of fluoroprotein foam in extinguishing gasoline pool fires with addition of bromofluoropropene

20-11-2014 | Mei Zhao, Xiaomin Ni, Shaogang Zhang, Wei Cao, Yu Guan, Canjun Liang, Xishi Wang, Heping Zhang, Fire and Materials, 2014

SUMMARY The fluoroprotein foam is one of the most widely used fire suppressants for its low cost, low toxicity and biodegradability. However, its fire extinguishing performance is limited. In this article, fluoroprotein foam was combined with a clean and degradable fire suppressant of ...


A facile synthesis of a novel three‐phase nanocomposite: Single‐wall carbon nanotube/silver nanohybrid fibers embedded in sulfonated polyaniline

18-11-2014 | Rajesh K. Agrawalla, Subhasish Paul, Pratap K. Sahoo, Amit K. Chakraborty, Apurba K. Mitra, Journal of Applied Polymer Science, 2014

ABSTRACT A three‐phase water‐soluble nanocomposite of single wall carbon nanotube/silver nanoparticle hybrid fibers embedded in sulfonated polyaniline has been synthesized by a simple chemical solution mixing process. The nanocomposite has been characterized by high resolution electron ...


Thermal property, morphology, and hydrolysis ability of poly(lactic acid)/chitosan nanocomposites using polyethylene oxide

18-11-2014 | Nguyen Thuy Chinh, Nguyen Thi Thu Trang, Dinh Thi Mai Thanh, To Thi Xuan Hang, Nguyen Vu Giang, Pham Minh Quan, Nguy ..., Journal of Applied Polymer Science, 2014

ABSTRACT Poly(lactic acid) (PLA) and chitosan (CS) are two natural resource polymers, which have been applied widely into different fields. Polymer composites based on PLA and CS have some advantages such as good adhesion, biodegradability, biocompatibility, and high stability. They can be ...


Optimization of electrical stimulation parameters for electro‐responsive hydrogels for biomedical applications

18-11-2014 | Nathan Jackson, Frank Stam, Journal of Applied Polymer Science, 2014

ABSTRACT Electro‐responsive hydrogels (ERH) are highly researched materials for biomedical applications. However, most of the research is concentrated on the synthesis of novel hydrogels for various applications, and little effort has been made to investigate electrode configuration and ...


Synthesis, Crystal Structure, and Biological Activities of Two Chiral Mononuclear Mn(III) Complexes

18-11-2014 | Bi‐Wei Wang, Lin Jiang, Si‐Sheng Shu, Bo‐Wen Li, Zhang Dong, Wen Gu, Xin Liu, Jin‐Lei Tian, Chirality, 2014

ABSTRACT Two new chiral mononuclear Mn(III) complexes, [MnL(R)Cl (C2H5OH)]•C2H5OH (1) and [MnL(S) (CH3OH)2]Cl•CH3OH (2), {H2L = (R,R)‐or (S,S)‐N,N’‐bis‐(2‐hydroxy‐1‐naphthalidehydene)‐cyclohexanediamine} were synthesized and characterized by various physicochemical techniques. Bond valence sum ...


ZnAl2O4:Eu novel phosphor: SEM and mechanoluminescence characterization synthesized by solution combustion technique

17-11-2014 | Kabita K. Satapathy, G. C. Mishra, F. Khan, Luminescence, 2014

ABSTRACT Eu doped ZnAl2O4 phosphors were synthesized by the solution combustion technique using carbohydrazide as a fuel. Mechanoluminescence (ML) was excited impulsively by dropping a piston of 0.7 kg onto the phosphors. Two distinct peaks were observed in the ML glow curve of the γ‐ray ...


Quantum tunneling process for double well potential

15-11-2014 | Lifei Wang, Qin Zhang, Feng Xu, Xiao‐Dong Cui, Yujun Zheng, International Journal of Quantum Chemistry, 2014

Quantum tunneling effects of Gaussian wave packet in one‐ and two‐dimensional double well potentials are investigated using quantum Liouville equation for time evolution of Wigner distribution in phase space. It is shown that a trajectory‐based solution of this problem can be constructed by ...


Nanostructured piezoelectric polymers

15-11-2014 | Valentina Cauda, Giancarlo Canavese, Stefano Stassi, Journal of Applied Polymer Science, 2014

ABSTRACT Among the wide variety of piezoelectric materials available, polymers offer an interesting solution because of their high mechanical flexibility, easy processing, and conformable features; they maintain good ferroelectric and piezoelectric properties. The most prominent examples of ...


Water filtration properties of novel composite membranes combining solution electrospinning and needleless melt electrospinning methods

12-11-2014 | Xiaohu Li, Weimin Yang, Haoyi Li, Yan Wang, Mahmoud M Bubakir, Yumei Ding, Youchen Zhang, Journal of Applied Polymer Science, 2014

ABSTRACT New composite polyvinyl alcohol (PVA)/polypropylene (PP) membranes were prepared by combining both solution electrospinning and melt electrospinning methods. Self‐designed and made needleless melt electrospinning device was used to fabricate PP membranes which acted as the support ...


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