Zobrazeno 1 - 10
of 76
pro vyhledávání: '"S. S. Sankar"'
Publikováno v:
Journal of Polymer Science Part B: Polymer Physics. 34:2209-2222
Pure gas and hydrocarbon vapor transport properties of blends of two glassy, polyacetylene-based polymers, poly(1-trimethylsilyl-1-propyne) [PTMSP] and poly(1-phenyl-1-propyne) [PPP], have been determined. Solid-state CP/MAS NMR proton rotating frame
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68a0984b74b5aff1147d2f18353037b9
https://doi.org/10.1002/(sici)1099-0488(19960930)34:13<2209::aid-polb10>3.0.co
https://doi.org/10.1002/(sici)1099-0488(19960930)34:13<2209::aid-polb10>3.0.co
Autor:
Benny D. Freeman, S. S. Sankar, C. Noël, D. A. Wicks, C. W. Lantman, Robert J. Kumpf, C. C. McDowell, H. C. Shen
Publikováno v:
Journal of Polymer Science Part B: Polymer Physics. 34:1347-1361
An aromatic copolyester composed of 25 mol % phenyl hydroquinone, 10 mol % isophthalic acid, 40 mol % chloroterephthalic acid, and 25 mol % t-butyl hydroquinone (PICT) has been synthesized. This amorphous, glassy polymer is soluble in common organic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6934bfe1e3a034de77b7b980b2389be
https://doi.org/10.1002/(sici)1099-0488(199605)34:7<1347::aid-polb16>3.0.co
https://doi.org/10.1002/(sici)1099-0488(199605)34:7<1347::aid-polb16>3.0.co
Autor:
J. C. Moreland, Robert B. Turner, E. O. Stejskal, C. G. Moreland, Garth L. Wilkes, S. S. Sankar
Publikováno v:
Journal of Applied Polymer Science. 52:1175-1180
High-resolution solid-state 13C-NMR has been used to study the phase separation and molecular motion in two series of polyurethane foams. These two series differ by one possessing the additive of lithium chloride, LiCl. NMR relaxation times can map t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::25ba01d7f9c68c418b9455e53bc1539d
https://doi.org/10.1002/app.1994.070520901
https://doi.org/10.1002/app.1994.070520901
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 32:229-239
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b9e4908e8e8234262717b9db94ed785
https://doi.org/10.1002/pola.1994.080320203
https://doi.org/10.1002/pola.1994.080320203
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 32:241-247
In a previous article,1 we reported on the interaction of cellulose with NH3/NH4SCN by using solid state CP / MAS 13C-NMR, wide-angle X-ray and other techniques. It appears that during an imposed temperature cycling sequence, specific cellulosic inte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::424608806fcda2f110b7181ec6f64e4b
https://doi.org/10.1002/pola.1994.080320204
https://doi.org/10.1002/pola.1994.080320204
Publikováno v:
Journal of Polymer Science Part B: Polymer Physics. 28:293-302
It has been shown that incorporation of masked isocyanates in the MY720/DDS epoxy significantly reduces the equilibrium moisture absorption by blocking of residual functional groups ( oxirane group) by the isocyanates released in the deblocking react
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::baf1c4f9b21604f5879f98520af5e4b4
https://doi.org/10.1002/polb.1990.090280304
https://doi.org/10.1002/polb.1990.090280304
Publikováno v:
Journal of Applied Polymer Science. 41:1251-1260
Films of a base polymer, primarily a terpolymer of n-butyl acrylate, vinyl acetate, and vinyl chloride, that is used in latex paint, have been exposed to various combinations of UV/air, UV/SO2, and UV/SO2/H2O. Reported here are results of elemental a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::036262259da120c4395301d2cad7c76a
https://doi.org/10.1002/app.1990.070410533
https://doi.org/10.1002/app.1990.070410533
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 25:3355-3362
Several cellulose derivatives were synthesized and characterized by IR and 1H-NMR spectroscopy. The positions of substitution in these derivatives were confirmed using solid state 13C-NMR spectroscopy techniques.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c70d2da9cbb47f936b2487b149ced01c
https://doi.org/10.1002/pola.1987.080251215
https://doi.org/10.1002/pola.1987.080251215
Publikováno v:
Magnetic Resonance in Medicine. 3:958-962
1H NMR spin-lattice relaxation times (T1) of the NCH3 proton resonances of phosphocreatine (PCr) and creatine (Cr) in water solutions were obtained using the 1,3,3,1 pulse sequence. These T1 values were equivalent to those obtained in D2O and water u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68cbdb1105d9b7f84f8b5daa412ee926
https://doi.org/10.1002/mrm.1910030618
https://doi.org/10.1002/mrm.1910030618
Publikováno v:
Organic Magnetic Resonance. 19:222-224
The 13C chemical shifts and one-bond carbon-hydrogen coupling constants have been obtained for some hydroxycoumarins and their corresponding acetoxy and methoxy derivatives. The changes in the one-bond carbon-hydrogen coupling constants resulting fro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9bc829ef01f333922fc202e84ea6b465
https://doi.org/10.1002/mrc.1270190413
https://doi.org/10.1002/mrc.1270190413