نتایج جستجو برای: natural polymer

تعداد نتایج: 571119  

Journal: :Journal of Membrane Science 2022

A polymer inclusion membrane (PIM) containing commercial ionic liquid methyltrioctylammonium chloride (Aliquat 336) as a carrier and cellulose triacetate (CTA) base has been used for the first time to remove fluoride from natural waters. Due anion-exchange characteristics of carrier, 1 M NaCl solution receiving phase. It found that addition tributyl phosphate (TBP) in formulation PIM increased ...

Journal: :International Journal of Mechanical and Materials Engineering 2021

Abstract For the last couple of decades, researchers have been trying to explore eco-friendly materials which would significantly reduce dependency on synthetic fibers and their composites. Natural fiber-based composites possess several excellent properties. They are biodegradable, non-abrasive, low cost, lower density, led growing interest in using these industrial applications. However, prope...

Journal: :Journal of biomedical materials research 1999
P X Ma R Zhang

Biodegradable polymers have been widely used as scaffolding materials to regenerate new tissues. To mimic natural extracellular matrix architecture, a novel highly porous structure, which is a three-dimensional interconnected fibrous network with a fiber diameter ranging from 50 to 500 nm, has been created from biodegradable aliphatic polyesters in this work. A porosity as high as 98.5% has bee...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده زبانهای خارجی 1391

the present study has tried to accomplish an analysis of margaret atwood’s novels oryx and crake, and the year of the flood in the light of posthuman and cyborg theories. considering posthumanism as a critical reading of some notions of humanism focus of which in this thesis has been identity, new definitions for humanity and human identity are formed. haraway’s cyborg, as one possible new figu...

Journal: :Journal of Research Updates in Polymer Science 2019

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