Zobrazeno 1 - 10
of 81
pro vyhledávání: '"Edward D. T. Atkins"'
Publikováno v:
Journal of Materials Science. 43:7035-7046
We report on the deformation behavior of commercially relevant lamellar and cylindrical tri-block copolymers poly (styrene-b-ethylene-co-butylene-b-styrene) (SEBS) with two different compositions. The structural changes that occur at various length s
Publikováno v:
Chemistry - A European Journal. 12:2423-2427
Facially amphiphilic (FA) phenylene ethynylene (PE) polymers that self-assemble in aqueous solution were studied by small-angle X-ray diffraction (SAXD) and found to self-assemble into bilayers with a fully extended backbone. The resulting bilayers h
Publikováno v:
Proceedings of the National Academy of Sciences. 102:315-320
The molecular structure of the amyloid fibril has remained elusive because of the difficulty of growing well diffracting crystals. By using a sequence-designed polypeptide, we have produced crystals of an amyloid fiber. These crystals diffract to hig
Autor:
Pawel Sikorski, Edward D. T. Atkins
Publikováno v:
Biomacromolecules. 6:425-432
Based on the interpretation of X-ray diffraction data reported for crystals of the poly-L-glutamine-rich 19-peptide D(2)Q(15)K(2), Perutz et al. (Proc. Natl. Acad. Sci. USA 2002, 99, 5591-5595) proposed that hollow, water-filled nanotubes are the bas
Publikováno v:
Journal of Polymer Science Part B: Polymer Physics. 40:2685-2692
Structural studies and morphological features of a new family of linear, aliphatic even–even, X 34-nylons, with X = 2, 4, 6, 8, 10, and 12, are investigated with X-ray diffraction and electron microscopy. Solution-grown crystals were obtained by is
Publikováno v:
Macromolecules. 35:8433-8439
Aliphatic 22,12-polyurethane has been crystallized directly from the melt and isothermally at 105 °C from N,N-dimethylformamide to give chain-folded lamellae of thickness ≈ 14 nm. The crystals have been investigated using X-ray diffraction, electr
Autor:
Robin Lynn Mckiernan, Shaw Ling Hsu, Amy M. Heintz, Samuel P. Gido, Edward D. T. Atkins, Jacques Penelle
Publikováno v:
Macromolecules. 35:6970-6974
A series of linear, aliphatic m,n-polyurethanes [O−(CH2)m−O−C(O)−NH−(CH2)n−NH−C(O)]x derived from long-chain aliphatic diols HO−(CH2)m−OH, where m = 12, 22, or 32, and much shorter diisocyanates OCN−(CH2)n−NCO, where n = 4, 6, 8
Publikováno v:
Macromolecules. 35:6975-6984
Poly(diethyl trimethylene-1,1-dicarboxylate) oligomers with an average degree of polymerization (DP) of 20 and a polydispersity of 1.13 have been isothermally crystallized at 30 °C from benzene and also crystallized from the melt (Tm = 176 °C). The
Publikováno v:
Polymer. 43:891-898
Crystals , grown from solution, of the monodisperse 5-amide nylon 6 oligomer (4.6 nm long) have been investigated using X-ray diffraction and electron microscopy. If the crystals are prepared by adding the miscible non-solvent 1,4 dioxane to a soluti
Autor:
Edward D. T. Atkins, Pawel Sikorski
Publikováno v:
Macromolecules. 34:4788-4794
Monodisperse 5-amide nylon 6 oligomers have been isothermally crystallized at 95 °C from N,N-dimethylformamide. The crystals have been investigated using optical microscopy, X-ray diffraction, electron microsopy (imaging and diffraction), atomic for