By Arthur Woodward, Frank Bovey
content material: Conformation and mobility of polymers adsorbed on oxide surfaces by way of ESR spectroscopy / Taiming Liang, Peter N. Dickenson, and Wilmer G. Miller --
An ESR research of environmental results on nylon fibers / K.L. Devries and M. Igarashi --
An ESR learn of first and foremost shaped intermediates within the photodegradation of poly(vinyl chloride) / N.-L. Yang, J. Liutkus, and H. Haubenstock --
Manganese(II) and gadolinium(III) EPR reports of membrane-bound ATPases / Charles M. Grisham --
Molecular constitution of vinyl chloride-vinylidene chloride copolymers through carbon-13 NMR / Charles J. Carman --
Characterization of long-chain branching in polyethylenes utilizing high-field carbon-13 NMR / J.C. Randall --
Molecular dynamics of polymer chains and alkyl teams in answer / George C. Levy, Peter L. Rinaldi, James J. Dechter, David E. Axelso, and Leo Mandelkern --
Use of pulsed NMR to review composite polymeric platforms / D.C. Douglass --
Multiple-pulse NMR of good polymers : dynamics of polytetrafluoroethylene / A.D. English and A.J. Vega --
Variable-temperature magic-angle spinning carbon-13 NMR experiences of reliable polymers / W.W. Fleming, C.A. Fyfe, R.D. Kendrick, J.R. Lyerla, H. Vanni, and C.S. Yannoni --
Drug-DNA interactions in answer : acridine mutagen, anthracycline antitumor, and peptide antibiotic complexes / Dinshaw J. Patel.
Read Online or Download Polymer Characterization by ESR and NMR PDF
Best general & reference books
Theory of the stability of lyophobic colloids
This chemistry vintage bargains an outstanding, hugely appropriate account of the soundness of lyophobic colloids and suspensions and develops a quantitative thought at the topic. significant themes include the speculation of a unmarried double layer (with issues of the distribution of the electrical cost)
Chemistry of Heterocyclic Compounds: The Pyrimidines: Supplement II, Volume 16
Content material: bankruptcy I creation to the Pyrimidines (H 1, E 1) (pages 1–20): bankruptcy II The significant man made strategy (H 31, E 20) (pages 21–62): bankruptcy III different tools of basic Synthesis (H eighty two, E fifty three) (pages 63–108): bankruptcy IV Pyrimidine and its C? Alkyl and C? Aryl Derivatives (H 116, e86) (pages 109–134): bankruptcy V Nitro Nitroso and Arylazopyrimidines (H 138, b ninety four) (pages 135–156): bankruptcy VI Halogenopyrimidines (H 162, E a hundred and ten) (pages 157–224): bankruptcy VII Hydroxy?
Develop into conversant in the fantastic international of atoms and molecules during this advisor written for readers who've little-to-no publicity to chemistry. The booklet offers an common creation to chemistry yet can be used as an excellent evaluation of the topic and discusses themes together with chemical reactions; the periodic desk of the weather; nuclear tactics; acids, bases, and salts; chemical bonding; environmental chemistry; and natural and biochemistry.
Analytical Pyrolysis. Techniques and Applications
1984 (this quantity is the results of lectures offered on the 5th foreign Symposium on Analytical Pyrolysis, held at Vail, Colorado), hardcover variation, Butterworths, London, U. okay. Hardcover name, 486 pages
- A Guide to the Elements
- Electronic States of Molecules and Atom Clusters: Foundations and Prospects of Semiempirical Methods
- Adsorption analysis: Equilibria and kinetics
- Domino Reactions: Concepts for Efficient Organic Synthesis
Additional info for Polymer Characterization by ESR and NMR
Example text
A2, 1972, 10, 1415. RECEIVED July 7, 1980. ; ACS Symposium Series; American Chemical Society: Washington, DC, 1980. -L. YANG, J. LIUTKUS, and H. HAUBENSTOCK Chemistry Department, The City University of New York, College of Staten Island, Staten Island, NY 10301 Poly(vinyl chloride), PVC, is today one of the top three most widely used thermoplastic materials Chemically this polymer is one of the leas broad scope of its application possibl y throug the development of proper technology for the processing of the polymer and the use of suitable stabilizers.
The most important v a r i a b l e s were polymerizat i o n temperature and % conversion. Chain t r a n s f e r to monomer i s the c o n t r o l l i n g f a c t o r i n determining the molecular weight of the polymer. For PVC, a decrease i n i r r a d i a t i o n time w i l l cause a decrease i n % conversion. This w i l l minimize branching s i n c e the branching mechanism i n v o l v e s chain t r a n s f e r t o polymer (10,11). Conversions of l e s s than 10% were shown to preclude branching i n bulk polymerized v i n y l c h l o r i d e at -10° to 30°C (12) .
100,000. Aside from c r y s t a l l i n i t y and branch cont e n t , these polymers should d i f f e r only i n number of end groups per u n i t weight of sample. D i s p r o p o r t i o n a t i o n r e a c t i o n s o f t e n terminate a growing PVC chain (17), r e s u l t i n g i n unsaturated chain ends. These chain ends may be a b l e to i n i t i a t e degradation by p r o v i d i n g l a b i l e a l l y l i c atoms f o r cleavage by UV. The net e f f e c t of v a r i a b l e molecular weights i s to p r o v i d e correspondi n g l y v a r i a b l e numbers of end groups.