نتایج جستجو برای: polymer network

تعداد نتایج: 761421  

2002
S. K. Sukumaran

– A tensile blob construction for branched structures is used to explain structural sizes larger than the strand length, as observed in neutron scattering data from equilibrium swollen networks. Under this model, equilibrium swollen networks display a base structural size, the “gel tensile blob” size, ξ, that follows the scaling relationship ξ ∼ l/(1/2−χ)P , where l is the monomer length, χ is ...

Journal: :Transactions of the Materials Research Society of Japan 2009

Journal: :Journal of Photopolymer Science and Technology 1998

Journal: :Biosensors & bioelectronics 2009
Dimitris Kyprianou Antonio R Guerreiro Iva Chianella Elena V Piletska Steven A Fowler Kal Karim Michael J Whitcombe Anthony P F Turner Sergey A Piletsky

Immobilisation of biorecognition elements on transducer surfaces is a key step in the development of biosensors. The immobilisation needs to be fast, cheap and most importantly should not affect the biorecognition activity of the immobilised receptor. A novel protocol for the covalent immobilisation of biomolecules containing primary amines using an inexpensive and simple polymer is presented. ...

2015
Marcin Kozanecki Marcin Pastorczak Lidia Okrasa Jacek Ulanski Jeong Ae Yoon Tomasz Kowalewski Krzysztof Matyjaszewski Kaloian Koynov

Copolymers of 2-(2-methoxyethoxy)ethyl methacrylate (poly(MEO2MA)) are regarded as bioinert replacements of poly(N-isopropylacrylamide) in some biomedical applications. Networks of poly(MEO2MA) of various architecture form thermo-responsive hydrogels. Here, we present dielectric and mechanical spectroscopy studies on segmental motions and network relaxation processes in linear poly(MEO2MA) and ...

2010
Yue Tang Hao Zhang Zhanxi Fan Minjie Li Jishu Han Fengxia Dong Bai Yang

In this study, we investigated the size and photoluminescence (PL) evolution of CdTe nanoparticles (NPs) in different polymer media under thermal annealing. A quick growth and maintenance of strong PL were observed. By analyzing the transmission electron microscopy (TEM) images of NPs in polymer media, we discovered that the size evolution of NPs was the combination of Ostwald ripening and dyna...

Journal: :Physical chemistry chemical physics : PCCP 2010
Yue Tang Hao Zhang Zhanxi Fan Minjie Li Jishu Han Fengxia Dong Bai Yang

In this study, we investigated the size and photoluminescence (PL) evolution of CdTe nanoparticles (NPs) in different polymer media under thermal annealing. A quick growth and maintenance of strong PL were observed. By analyzing the transmission electron microscopy (TEM) images of NPs in polymer media, we discovered that the size evolution of NPs was the combination of Ostwald ripening and dyna...

2006
D. M. Gregory

Numerous swelling parameters measured by magnetic resonance microscopy (MRM) are found to correlate with cross-link density of the polymer network under investigation. Use of these parameters to assess the three-dimensional network structure of coal is discussed.

2015
Wei Quan Liu Chao Mohammed N. Afsar

The dielectric properties and ionic conductivity of novel "ceramic state" polymer electrolytes for high capacity lithium battery are characterized by Radio frequency and Microwave methods in two broad frequency ranges from 50 Hz to 20 KHz and 4 GHz to 40 GHz. This innovative solid polymer electrolyte which is highly ionic conductive (10 S/cm at room temperature) from -40C to +150C can be used i...

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