نتایج جستجو برای: acrylic polymer
تعداد نتایج: 101376 فیلتر نتایج به سال:
The aim of this review is to cover the contribution of high resolution NMR spectroscopy to the study of polymer microstructure, particularly after the years 1974-5, thus continuing the series of previous reviews (1-6). The impact of stereospecific catalysts on the polymer world has created new demands for methods of studying the stereochemical configuration of polymer chains. NMR spectroscopy h...
Conducting polymers are widely used as electrode coatings in electrophysiology to lower impedance and achieve higher quality recordings more efficient stimulation. Their availability dispersions that can be processed directly from solution makes them particularly attractive for applications, where low cost compatibility with mechanically flexible substrates important. In this work, we demonstra...
Dental polymers are primarily used in restorative dentistry and must serve both cosmetic and functional purposes. They must be adaptable for easy forming and final cure by simple techniques and equipment available in a dental laboratory or dentist’s office. The final prosthetic device must fit exactly in spite of shrinkage due to polymerization and high coefficients of expansion. The plastic mu...
Grafted copolymer (sodium alginate (Na. Alg)- acrylic acid (AcA)– methacrylic (MAcA)) was prepared by the gamma irradiation-induced copolymerization in presence of N, N-methylene bisacrylamide (MBA) as a co monomer crosslinker. The functionality, morphology and thermal stability have been examined using FTIR spectroscopy, SEM, TGA-DTA, respectively. surface grafted shows smooth relatively homog...
Increasing usage of polymer composite materials necessitates the development recyclable alternatives to traditional thermoset matrices or new techniques for recycling these materials. One family promising are room temperature infusible acrylic resins, known commercially as Elium®. If be used in tidal stream energy and shipping sectors, they must able withstand long-term immersion seawater witho...
Some systems show high miscibility in water at low temperatures while they phase separate at high temperatures. Before the macroscopic phase separation there is a strong turbidity, defined as clouding [1, 2]. At certain circumstances, namely above a critical concentration, the polymer system stays turbid with a gel-like appearance, without any macroscopic phase separation [3]. Gels defined in t...
The aim of the study was to investigate the flexural and impact strength of 3 commercially available denture base resins after reinforcing them with single walled carbon nanotubes (SWCNT’S). Each acrylic resin was first solubilised in Tetrahydrofuran (THF) and then carbon nanotubes were added in different percentages respectively. A total of 50 specimens were made from each material (Eclipse, T...
Front Cover: Caffeic acid is a component of coffee beans and bears catechol functionality. In article number 2100378 by Kotaro Satoh co-workers, caffeic acid-derived styrene monomer amenable to RAFT polymerization, which one the emerging methodologies for polymer synthesis. Combined with protection/deprotection processes, polymerization results in welldefined functional block copolymers consist...
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