منابع مشابه
Liquid Crystalline Acrylates and Their Polymers
In previous papers (1,2) the thermotropic properties and the kinetics of the bulk polymerization of the mesomorphic monomer cholesteryl acrylate have been described. In addition to cholesteryl acrylate, the methacrylate was prepared, as well as the respective acrylic methacrylic acid ester of cholestanol. We now wish to report the properties of these monomeric esters and the results of their po...
متن کاملPhotopolymerized multifunctional (meth)acrylates as model polymers for dental applications.
Polymer networks that can serve as model systems for dental applications were prepared by photopolymerizations of 1,1,1-trimethylolpropane triacrylate, 1,1,1-trimethylolpropane trimethacrylate, 1,1,1-trimethylolethane trimethacrylate, ethylene glycol dimethacrylate, triethylene glycol dimethacrylate, Photomer 2028 and Photomer 3015. The UV polymerizations were initiated by 2,2-dimethoxy-2-pheny...
متن کاملAcrylates.
ACRYLATES HAVE been around since the 1930s, when Rohm and Haas began mass production of Plexiglas, a clear and resistant glass substitute made of polymerized methacrylate. It is used extensively for windowpanes, airplane canopies, car lights and windshields, streetlamps, and so on. Numerous other acrylates have been synthesized and have found applications in paints and adhesives, dental composi...
متن کاملThe Mathematics of Popcorn
A kernel of popping corn consists of a hard outer shell called the pericarp which is impermeable to moisture and a dense center filled with starch, water and some oil[8]. As the kernel is heated, internal pressure rises to approximately 135 psi, at which point the pericarp bursts. The steam and starch expands to a foam which rapidly cools forming the popcorn. Variations in the strength of the p...
متن کاملControlling the Size of Popcorn
We present a thermo-statistical model of popcorn production and propose a way to control the final size of the popcorn by monitoring only the chamber pressure. P.A.C.S: 05.20-y, 01.55.+b, 01.90+g, 05.70-2. How can one control the size of popcorn? The food industry may have ample reason to seek for ways to double or triple the size of popcorn, because large popcorn may be pleasing to the eyes, p...
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ژورنال
عنوان ژورنال: Nippon kagaku zassi
سال: 1968
ISSN: 0369-5387,2185-0917
DOI: 10.1246/nikkashi1948.89.12_1236