Structural formulan. A drawing showing which atoms are bonded to each other in a molecule or polyatomic ion.Springer New YorkEncyclopedic Dictionary of Polymers
29, No. 5, pp 457-466 (1997) Spectral Analysis of Eight Polymers in SIMS by MO Calculation. Prediction of Cleavage of Polymers and Structural Formula of the Positive-Ion Fragment Kazunaka ENDo,t Takahiro Hosm,* Naoya KOBAYASHI, Hidetoshi MIURA, and Masahiro Kuoo** Tsukuba Research ...
Fiber-reinforced polymers (FRP) are a broad group of composite materials made of fibers embedded in a polymeric matrix. Compared to metals, they generally have relatively high strength-to-weight ratios and excellent corrosion resistance. They can be formed into virtually any shape and size. Glass...
The invention relates to polymers that contain at least one carbazole structural unit of the general formula (I), in which Ar 1 , Ar 2 , Ar 3 are each an aryl or heteroaryl group independently of one another, said group being substitutable with any one or more groups R; m, o are 0...
MATERIALS AND METHODS Preparation of the Polymers High molecular weight samples of poly(L-valine), poly(L-isoleucine), and poly(t.-phenylalanine) were prepared by polymerizing the N-carboxyanhydrides of corresponding amino acids in anisole.3 Preparation of Films and Oriented Fiber Specimens The ix...
Polymers with carbazole structural unitsThe invention relates to polymers that contain at least one carbazole structural unit of the general formula (I), in which Ar, Ar, Arare each an aryl or heteroaryl group independently of one another, said group being substitutable with any one or more ...
In the current study, two new mixed-ligand coordination polymers with the chemical formulae of {[Co(L1)0.5(oba)·DMF]·DMF·H2O} ( 1 , L1 = N , N ′-bis(4-pyridylmethyl)-naphthalene diimide, H2oba = 4,4′-oxydibenzoic acid) and [Co(L2)0.5(OBA)] n ( 2 , L2 = 1,6...
Polymers structures were identified by elemental analysis and IR spectrophotometry. All the polymers have the same structural formula except the way of linking phenylene units inside the polymer chain. They were readily soluble in several organic polar solvents such as DMAc, N,N-dimethylformamide [DMF...
Compounds of Formula (I) wherein Q11 is H, an electron donating radical (as defined) or an electron withdrawing radical (as defined), M is vanadium, chromium, molybdenum, tungsten or manganese, n is 1-5, m is 0-4, m + n = 5, x is 2 or 3... WE Vincent,B Abe 被引量: 0发...
II. Crystal and Molecular Structures of Aliphatic Polyurethanes from Trimethylene Diisocyanate, and Tetra- and Hexa-Methylene Glycols Yasushi SAITO, Kazuaki HARA, and Shigetake KINOSHITA Department of Fibers and Polymers, Faculty of Technology, Gunma University, Tenjin-cho, Kiryu 371, Japan. (Received...