نتایج جستجو برای: biocompatible polymer

تعداد نتایج: 99457  

2006
Hariharasudhan Chirra James Z. Hilt

Biocompatible polymer networks with specific structure and orientation have tremendous potential in the biomedical field (e.g., recognition of specific proteins and other biomolecules for diagnostic and therapeutic applications). The control over the growth of these polymer networks on surfaces plays a vital role, since it acts as the interface between the device and the biological medium/envir...

Journal: :Nanomedicine : nanotechnology, biology, and medicine 2012
Dhan B Khadka Donald T Haynie

UNLABELLED Electrospun fibers are being studied and developed because they hold considerable promise for realizing some advantages of nanostructured materials. The fibers can be made of biocompatible and biodegradable polymers. Electrospinning has therefore attracted interest in biotechnology and medicine, and there has been rapid growth in this area in recent years. This review presents an int...

Journal: :Bioscience reports 2001
R Z Xie S Stretton D F Sweeney

Synthetic onlays that are implanted onto the surface of the cornea have the potential to become an alternative to spectacles and contact lenses for the correction of refractive error. A successful corneal onlay is dependent on development of a biocompatible polymer material that will maintain a healthy cornea after implantation and that will promote growth of corneal epithelial cells over the o...

2014
Karim S Shalaby Mahmoud E Soliman Luca Casettari Giulia Bonacucina Marco Cespi Giovanni F Palmieri Omaima A Sammour Abdelhameed A El Shamy

In this study, di- and triblock copolymers based on polyethylene glycol and polylactide were synthesized by ring-opening polymerization and characterized by proton nuclear magnetic resonance and gel permeation chromatography. Nanoparticles containing noscapine were prepared from these biodegradable and biocompatible copolymers using the nanoprecipitation method. The prepared nanoparticles were ...

Journal: :Acta cirurgica brasileira 2017
Viviani Teixeira Dos Santos Gilberto Gonçalves Facco Hudman Cunha Ortiz Iandara Schettert da Silva

Purpose To evaluate the polymer doped rods behavior with bioactive glass and hydroxyapatite for possible application as a fracture fixing method. Methods Twenty eight Rattus norvegicus Wistar underwent bone defect for access to the femoral medullary canal and distributed into three experimental groups: group A - doped castor bean polymer with bioactive glass; group B - castor bean polymer and; ...

2013
Thomas Gruhn

The structure and material properties of polymer networks can depend sensitively on changes in the environment. There is a great deal of progress in the development of stimuli-responsive hydrogels for applications like sensors, self-repairing materials or actuators. Biocompatible, smart hydrogels can be used for applications, such as controlled drug delivery and release, or for artificial muscl...

Journal: :Nature communications 2014
Guosong Hong Yingping Zou Alexander L Antaris Shuo Diao Di Wu Kai Cheng Xiaodong Zhang Changxin Chen Bo Liu Yuehui He Justin Z Wu Jun Yuan Bo Zhang Zhimin Tao Chihiro Fukunaga Hongjie Dai

In vivo fluorescence imaging in the second near-infrared window (1.0-1.7 μm) can afford deep tissue penetration and high spatial resolution, owing to the reduced scattering of long-wavelength photons. Here we synthesize a series of low-bandgap donor/acceptor copolymers with tunable emission wavelengths of 1,050-1,350 nm in this window. Non-covalent functionalization with phospholipid-polyethyle...

2012
Xiumei Wang Bei'er Lv Guixin Cai Long Fu Yuanzi Wu Xiang Wang Bin Ren Hongwei Ma

The acidophilic archaeons are a group of single-celled microorganisms that flourish in hot acid springs (usually pH < 3) but maintain their internal pH near neutral. Although there is a lack of direct evidence, the abundance of sugar modifications on the cell surface has been suggested to provide the acidophiles with protection against proton invasion. In this study, a hydroxyl (OH)-rich polyme...

2014
Feifei Xue Shichun Jiang

Biocompatible and biodegradable block copolymers (BBCPs) containing crystalline blocks become increasingly important in polymer science, and have great potential applications in polymer materials. Crystallization in polymers is accompanied by the adoption of an extended conformation, or often by chain folding. It is important to distinguish between crystallization in homopolymers and in block c...

2016
Mateusz Gosecki Mariusz Gadzinowski Monika Gosecka Teresa Basinska Jianxun Ding

Polyglycidol (or polyglycerol) is a biocompatible polymer with a main chain structure similar to that of poly(ethylene oxide) but with a –CH2OH reactive side group in every structural unit. The hydroxyl groups in polyglycidol not only increase the hydrophilicity of this polymer but also allow for its modification, leading to polymers with carboxyl, amine, and vinyl groups, as well as to polymer...

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