ORGANIC AND PHYSICAL CHEMISTRY OF POLYMERS phần 9 ppt

... West University Drive, Edinburg, TX 78539, USA Canales et al. Organic and Medicinal Chemistry Letters 2011, 1:9 http://www.orgmedchemlett.com/content/1/1/9 â 2011 Canale s et al; licensee Springer. This is ... 95 25 Neutral alumina Reflux/Benzene 92 *No reaction. Canales et al. Organic and Medicinal Chemistry Letters 2011, 1:9 http://www.orgmedchemlet...

Ngày tải lên: 21/06/2014, 06:20

... 2-((Z)-5-((3-(4- fluorophenyl)-1-phenyl-1H-pyrazol-4-yl)methylene)-2, 4-dioxothiazolidin-3- yl)acetate Aneja et al. Organic and Medicinal Chemistry Letters 2011, 1:15 http://www.orgmedchemlett.com/content/1/1/15 Page 8 of 11 and structure-activity relationship ... available at the end of the article Aneja et al. Organic and Medicinal Chemistry Letters 2...

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Ngày tải lên: 24/07/2014, 08:20

... history of the workpiece from the start of heating to the end of cooling; identify key features of the process; determine the total time requirement; and justify the lumped-capacitance method of analysis. SCHEMATIC: ASSUMPTIONS: ... dissipation rate, M is the mass of PCM, and h fg is the heat of fusion of PCM. Irradiation: G = σT w = 5.67 ì 10 -8 W/m 2 K 4 (1200 K)...

Ngày tải lên: 08/08/2014, 17:20

... F) Polyethylene n 33.0 16 .5 9,000 8,500 Polyisobutene n 66.8 16 .3 17 ,800 18 ,200 Polystyrene n 98.0 18 .2 32,000 36,000 Poly(vinyl chloride) Cl 45.2 21. 3 19 ,300 17 ,800 1, 4-cis- Polybutadiene n 60.7 17 .1 17,500 17 ,600 Poly(ethylene terephthalate) O O O O n 14 3.2 ... constant and absolute Organic and Physical Chemistry of Polymers, by Yves Gnanou and Michel...

Ngày tải lên: 14/08/2014, 10:20

... the enthalpy of mixing is established as follows: H mix = z  n 2 1 ε 11 2( n 1 +n 2 X) + n 2 2 X 2 ε 22 2( n 1 +n 2 X) + n 1 n 2 Xε 12 (n 1 +n 2 X)  −  n 1 ε 11 2 + n 2 Xε 22 2  or H mix = ... expressions delivers u = (2/ N a )  1 2 −χ 12  V 2 2 M 2 2 V 0 1 F(Y) (4.49a) and Y = [2/ N a ]  1 2 −χ 12  V 2 2 M 2 2 V 0 1  3 4πs 2  3 /2...

Ngày tải lên: 14/08/2014, 10:20

... 133 Figure 5 .36 . Diagram of the morphology of relaxed S-B-S thermoplastic elastomers revealing the physical cross-linking of the system by the glassy nodules of polystyrene. Block or graft copolymers ... the mass of the solute, V 1 and V 2 are the volumes occupied by the solvent and the solute, N 1 and N 2 are the number of molecules of solvent and solute, and M 2...

Ngày tải lên: 14/08/2014, 10:20

... prior establishment of a calibra- tion curve from elution volumes of standard samples as a function of their molar mass. Standard samples of polystyrene for polymers soluble in organic solvents or ... means that the mass of the polycondensate where X  was randomly chosen is the sum of the masses of two parts, one standing on the left- and the other on the right-hand side...

Ngày tải lên: 14/08/2014, 10:20

... char- acter and afford chains and architectures of controlled size and structure are in great demand. Among the specific characteristics, one can mention a low dispersity of chains. Such a narrowing of ... X n k t (L·mol −1 ·s −1 ) 5 200 100 10 20 50 50 0 2 50 20 1000 1 Depending upon the composition of the reaction medium, the methods used for the determination and the au...

Ngày tải lên: 14/08/2014, 10:20

... r 1 and r 2 are the ionic radius of cation and anion, respectively, and e is the electron charge. This relation shows that by increasing the apparent ionic radius of the cation and that of the ... radius of the lithium ion; the attack of carbonyl groups by ion pairs can thus be thwarted, the probability of termination reduced, and the control of polymerization improved...

Ngày tải lên: 14/08/2014, 10:20

... 374 REACTIVITY AND CHEMICAL MODIFICATION OF POLYMERS degradation by depolymerization m t M n t degradation by random chain breaking m t t M n Figure 9.2. Variations of both molar mass and ... use of techniques of high sensitivity and precision such as mass spectrometry (MALDI-TOF) is helpful with respect to the identification of these functional groups. 10.3. BLOCK AND G...

Ngày tải lên: 14/08/2014, 10:20

... overall movement of the chain, through the use of a suitable analytical technique. Organic and Physical Chemistry of Polymers, by Yves Gnanou and Michel Fontanille Copyright  20 08 John Wiley & ... FORMULATION, AND POLYMER PROCESSING TECHNIQUES two models, that of Rouse and that of reptation, thus differ by their description of both the diffusion and the vis...

Ngày tải lên: 14/08/2014, 10:20

... bases (one internal and one external) to attain rates of mm triads close to 99 % and activities (see definition in Section 8.8.2) of several hundreds of grams of PP per gram of Ti per h pe MPa. Although ... poly(but-1-ene) and poly(4-methylpent-1-ene) have attained the industrial level. Organic and Physical Chemistry of Polymers, by Yves Gnanou and Michel Fontanil...

Ngày tải lên: 14/08/2014, 10:20

... the poly- condensation of o-phthalic anhydride with glycerol, and the resulting network is represented hereafter. Organic and Physical Chemistry of Polymers, by Yves Gnanou and Michel Fontanille Copyright ... (Ed.), Handbook of Thermoplastics, Marcel Dekker, New York, 1997. A. K., Bhowick and H. L., Stephens (Ed.), Handbook of Elastomers, Marcel Dekker, New York, 1988....

Ngày tải lên: 14/08/2014, 10:20

... equally jealous of one another, and of the king. Though the tenants and retainers of the clergy, therefore, had both together been less numerous than those of the great lay-lords, and their tenants were ... Geneva, on the con- trary, in the Protestant cantons of Switzerland, in the Protestant countries of Germany, in Holland, in Scotland, in Sweden, and Denma...

Ngày tải lên: 14/08/2014, 22:20