نتایج جستجو برای: polymer degradation

تعداد نتایج: 240989  

Journal: :Journal of Synthetic Organic Chemistry, Japan 1965

Journal: :Journal of the Fuel Society of Japan 1971

Journal: :Aggregate 2022

The creation of a new photoluminescent platform to study their photo physics and further applications is important in the fields chemistry, material, physics, etc. In this work, we developed benzene-based fluorophores generated by chemical reactions on conjugate acceptor precursors. Their optical properties have been studied, large Stokes shifts, high molar extinction coefficients quantum yield...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
Laura E Niklason Alvin T Yeh Elizabeth A Calle Yuqiang Bai Arturo Valentín Jay D Humphrey

Many investigators have engineered diverse connective tissues having good mechanical properties, yet few tools enable a global understanding of the associated formation of collagen fibers, the primary determinant of connective tissue stiffness. Toward this end, we developed a biomechanical model for collagenous tissues grown on polymer scaffolds that accounts for the kinetics of polymer degrada...

2013
D. M. Correia C. Ribeiro J. C. Coelho G. Botelho J. L. Gomez Ribelles S. Lanceros-Méndez V. Sencadas

Poly(hydroxybutyrate) (PHB) obtained from sugar cane was dissolved in a blend of chloroform and dimethylformamide (DMF) and electrospun at 40 oC. By adding DMF to the solution, the electrospinning process for the PHB polymer becomes more stable, allowing complete polymer crystallization during the jet travelling between the tip and the grounded collector. The influence of processing parameters ...

Journal: :Circulation. Cardiovascular interventions 2012
Erika Strandberg Joan Zeltinger Daryl G Schulz Greg L Kaluza

BACKGROUND The interplay between mechanical dilatation, resorption, and arterial response following implantation of bioresorbable scaffolds is still poorly understood. METHODS AND RESULTS Long-term geometric changes in porcine coronary arteries in relation to gradual degradation of bioresorbable scaffolds were assessed in comparison with bare metal stents (BMS). Intravascular ultrasound (IVUS...

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