نتایج جستجو برای: nipaam

تعداد نتایج: 130  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده شیمی 1392

چکیده: نانوهیدروژل ها بدلیل داشتن سطح زیاد دارای خصوصیات جالبی بوده و به عنوان ابزار های جدید می توانند برای توسعه سیستم های رهش داروی هدفمند به منظور غلبه بر کاستی های داروهای ضد سرطان، از جمله عوارض جانبی شدید و اثر درمانی کم بکارگرفته شوند. پلیمرهای "هوشمند" با ابعاد نانو قادر به انجام عملکرد فوق العاده ای در پاسخ به محرک های داخلی یا خارجی مانند ph، دما، آنزیم ها، نور، مغناطیس، یا اولتراسون...

2012
MOSTAFA REZAEI-TAVIRANI SAEID HEIDARI

The UV radiation method is a suitable method for grafting processes. Poly-N-isopropylacrylamide was successfully grafted onto a polystyrene surface with benzophenone initiator under UV radiation. In this study, grafted polystyrene was exposed to microwave plasma treatment with oxygen gas. The ATR-FTIR analysis showed the existence of the graft poly-N-isopropylacrylamide (PNIPAAm) on the surface...

Journal: :Friction 2022

Abstract Synovial fluid is made up of various biomacromolecules, including hyaluronic acid, aggrecans, lubricins, and phosphatidylcholine lipid, which are assembled onto the surface articular cartilage in a gel state. Among them, brush-like biomacromolecules or assemblies have vital effect on human joint lubrication. Inspired by this, combination molecular structures gel-like assembly may be an...

2011
ESMAEIL BIAZAR HOSSEIN MOHAMMADI

The UV radiation method is a suitable method for grafting processes . Poly-Nisopropylacrylamide was successfully grafted onto a polystyrene surface with benzophenone initiator under UV radiation. The ATR-FTIR analysis showed the existence of the graft poly-N-isopropylacrylamide (PNIPAAm) on the surface by this method. The scanning electron microscopy and atomic force microscopy (AFM) images cle...

2007
A. Mariani V. Alzari G. Caria M. Murgia J. M. Kenny O. Monticelli

Frontal Polymerization 1,2 (FP) is an innovative technique that converts a monomer into a polymer as a result of the propagation of a reaction front along the reactor. In this work, the above technique has been used for the first time to synthesize nanocomposites, mainly based on hydrogels. Indeed, montmorillonite (MMT)-type clays and polyhedral oligomeric silsesquioxanes (POSS) have been dispe...

Journal: :Journal of Polymers and The Environment 2023

Abstract The aim of this study is to fabricate an ampholyte thermo-responsive terpolymers and explore the influence on phase separation temperatures in different pH solutions. fabrication was achieved by terpolymerization N-isopropylacrylamide (NIPAAm), DIVA (5, 10, 15 mol.%), acrylic acid (AA) 10 mol.%. preparation cationic monomer from vanillin a facile reaction named 2-((diisopropylamino) me...

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