Results 191 to 200 of about 159,885 (249)
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Dilute solution properties of model PMMA-g-PMMA's
Macromolecules, 1990Etude de l'influence du degre de ramification sur les proprietes des solutions diluees de PMMA peignes de meme masse moleculaire. Etude de la validite de l'etalonnage universel pour la determination de la masse moleculaire et la distribution de masse moleculaire de polymeres en ...
E. J. Siochi +4 more
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Synthesis of PMMA‐PTHF‐PMMA and PMMA‐PTHF‐PST linear and star block copolymers
Journal of Applied Polymer Science, 2004AbstractCombination of cationic, redox free radical, and thermal free radical polymerizations was performed to obtain linear and star polytetramethylene oxide (poly‐THF)‐polymethyl methacrylate (PMMA)/polystyrene (PSt) multiblock copolymers. Cationic polymerization of THF was initiated by the mixture of AgSbF6 and bis(4,4′ bromo‐methyl benzoyl ...
Baki Hazer, Hülya Macit
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Improved Adhesion Between PMMA and Stainless Steel Modified with PMMA Brushes
ACS Applied Materials & Interfaces, 2014In this work, various lengths and densities of poly(methyl methacrylate) (PMMA) brushes were synthesized on stainless steel (SS) surfaces via surface initiated atom transfer radical polymerization. Subsequently, the joints between the bulk PMMA and the PMMA brushed stainless steel were obtained by injection molding, and for these the degree of adhesion
Shimizu, Kyoko +5 more
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Solvent-based bonding of PMMA–PMMA for microfluidic applications
Microsystem Technologies, 2018Solvent bonding is a simple, inexpensive and quick technique used for joining microfluidic parts made of thermoplastic polymers that results in high bonding strength and good optical clarity. However, selecting the right solvent as well as the curing conditions is an important step in providing a successful bond that ensures an appropriate bonding ...
Mohammad M. Faghih, M. Keith Sharp
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Transactions on Electrical and Electronic Materials, 2019
In this paper, the effect of (Al2O3, ZrO2, Ag, Al2O3-Ag, ZrO2-Ag) nanoparticles on the optimized geometrical parameters and electronic properties of poly-methylmethacrylate has been investigated for first time. The optimization parameters included both bonds angles and bonds length.
Angham Hazim +2 more
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In this paper, the effect of (Al2O3, ZrO2, Ag, Al2O3-Ag, ZrO2-Ag) nanoparticles on the optimized geometrical parameters and electronic properties of poly-methylmethacrylate has been investigated for first time. The optimization parameters included both bonds angles and bonds length.
Angham Hazim +2 more
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MRS Proceedings, 2006
AbstractWe have utilized the fact that syndiotactic and isotactic Poly(methyl methacrylate) {PMMA} form a stereocomplex to spin semi-crystalline PMMA fibers. Our goal is to produce oriented semi-crystalline fibers with a high enough melting point to withstand atactic-PMMA processing conditions. We successfully developed stereocomplex PMMA fibers by wet
Matija Crne +4 more
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AbstractWe have utilized the fact that syndiotactic and isotactic Poly(methyl methacrylate) {PMMA} form a stereocomplex to spin semi-crystalline PMMA fibers. Our goal is to produce oriented semi-crystalline fibers with a high enough melting point to withstand atactic-PMMA processing conditions. We successfully developed stereocomplex PMMA fibers by wet
Matija Crne +4 more
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Macromolecules, 1997
Polymer composites of several concentrations of poly(methyl methacrylate) and poly(p-phenyleneterephthalamide) microfibrils have been prepared by blending a solution of the matrix polymer and a suspension of microfibrils obtained from a solution of commercial Kevlar fiber in H2SO4. Scanning electron microscopy shows that a continuous network of fibrils
M. Monleón Pradas +3 more
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Polymer composites of several concentrations of poly(methyl methacrylate) and poly(p-phenyleneterephthalamide) microfibrils have been prepared by blending a solution of the matrix polymer and a suspension of microfibrils obtained from a solution of commercial Kevlar fiber in H2SO4. Scanning electron microscopy shows that a continuous network of fibrils
M. Monleón Pradas +3 more
openaire +1 more source