نتایج جستجو برای: hyperbranched copolymers

تعداد نتایج: 9697  

Journal: :Chemical communications 2014
Wenbin Zhang Cheng Wang Gang Liu Jun Wang Yu Chen Run-Wei Li

Linear and hyperbranched poly(azomethine)s (PAMs)-based on triphenylamine moieties are synthesized and used as the functioning layers in the Ta/PAM/Pt resistive switching memory devices. Comparably, the hyperbranched PAM with isotropic architecture and semi-crystalline nature shows enhanced memory behaviors with more uniform distribution of the HRS and LRS resistances.

2008
ANZAR KHAN MICHAEL MALKOCH MARTHA F. MONTAGUE CRAIG J. HAWKER

Hyperbranched polymers were prepared from a variety of monoand difunctional monomers and used in the development of novel UV-imprint lithography (UV-IL) resists. The unique physical and chemical properties of these hyperbranched materials significantly increase the range of molecular systems that could be imprinted. Traditional challenges, such as the use of monomers that have low boiling point...

Journal: :Nanoscale 2014
Hong Hanh Nguyen Clara Valverde Serrano Pierre Lavedan Dominique Goudounèche Anne-Françoise Mingotaud Nancy Lauth-de Viguerie Jean-Daniel Marty

Branched thermotropic liquid crystals were successfully obtained from ionic interactions between hyperbranched polyamidoamine and sodium dodecylsulfate. These complexes present columnar rectangular and lamellar thermotropic mesophases as demonstrated by polarized optical microscopy, differential scanning calorimetry, and small-angle X-ray scattering. The relationships between the structural cha...

2017
Xiaofeng Wang Chih-Feng Huang Jinlian Hu Rui Xiao

This short review article summarizes recent reports on using controlled radical polymerization (CRP) of inimers (compounds containing initiating group and vinyl group in one molecule) or transmers (compounds containing chain transfer group and vinyl group in one molecule) for the synthesis of hyperbranched polymers. These inimers and transmers that carry numerous functional groups could be homo...

This paper presents the influence of Hybrane H 1500 as a hyperbranched polymer on kinetic parameters of dyeing compounded fiber grade PET polyethylene terephthalate at boil temperature. C.I. Disperse Red 324 as a disperse dye was used for dyeing compounded fiber grade PET. The result was compared with corresponding properties of virgin PET. The dyeing rate constants and diffusion coefficients a...

2017
Tam Huu Nguyen Thu Anh Nguyen Hoan Minh Tran Le-Thu T. Nguyen Anh Tuan Luu Jun Young Lee Ha Tran Nguyen

BACKGROUND Although poly(N-acyl dithieno[3,2-b:2',3'-d]pyrrole)s have attracted great attention as a new class of conducting polymers with highly stabilized energy levels, hyperbranched polymers based on this monomer type have not yet been studied. Thus, this work aims at the synthesis of novel hyperbranched polymers containing N-benzoyl dithieno[3,23,2-b:2',3'-d]pyrrole acceptor unit and 3-hex...

Aiyoub Parchehbaf Jadid Meysam Nouri Molalar Mohammad Hossein Nasirtabrizi, Zahed Ghashangi,

4-ChloroMethyl Styrene (CMS) was copolymerized with different monomers such as Methyl MethAcrylate (MMA), Methyl Acrylate (MA), 2-EthylHexyl Acrylate (EHA) by free radical polymerization method at 70 ±1°C using a,a'-Azobis(IsoButyroNitrile) (AIBN) as an initiator. The copolymer compositions were obtained using related 1HNMR spectra and the poly...

2012
Sabine Enders Kai Langenbach Philipp Schrader Tim Zeiner

Hyperbranched polymers show an outstanding potential for applications ranging from chemistry over nanotechnology to pharmacy. In order to take advantage of this potential, the underlying phase behaviour must be known. From the thermodynamic point of view, the modelling of these phase diagrams is quite challenging, because the thermodynamic properties depend on the architecture of the hyperbranc...

2013
Jun-Jie Yan Jiao-Tong Sun Ye-Zi You De-Cheng Wu Chun-Yan Hong

In nature, a sapling can grow into a big tree under irradiation of sunlight. In chemistry, a similar concept that a small molecule only exposing to sunlight grows into a hyperbranched macromolecule has not been realized by now. The achievement of the concept will be fascinating and valuable for polymer synthesis wherein sunlight is inexpensive, abundant, renewable, and nonpolluting. Herein, we ...

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