ORGANIC AND PHYSICAL CHEMISTRY OF POLYMERS phần 1 docx

... justice to answer me. It is impossible I Bài 5 - Letters of congratulation & letters of introduction (Thư chúc mừng & thư giới thiệu)-phần4 On a graduation (Trong dịp tốt nghiệp) ... September 18 , 2009. 11 Xuan Dieu Road, Hai Ba Trung dist., Ha Noi Dear Hong Anh, The announcement of your engagement to Dao soon have the pleas...

Ngày tải lên: 12/07/2014, 01:20

... The heat flux and heat rate when the outside wall temperature is T 2 = -15 °C are ( ) 2 12 x 25 C 15 C dT T T q k k 1W m K 13 3.3W m dx L 0.30m −− − ′′ =− = = ⋅ = . (1) 22 xx q q A 13 3.3W ... 824444 q 7.85m 10 W/m K 15 0 25 K 0.8 5.67 10 W/m K 423 298 K =+ìì ()() 22 q 7.85m 1, 250 1, 095 w/m 9 813 8592 W 18 ,405 W=+=+= < (b) The annual energy loss i...

Ngày tải lên: 08/08/2014, 17:20

... action. Example 1. imagine 1. seem 11 . speak 2. dream 12 . know 3. type 13 . skid 4. stomp 14 . are 5. is 15 . cherish 6. regret 16 . yearn 7. ski 17 . travel 8. fly 18 . were 9. was 19 . resent 10 . forget 20. push EXERCISE ... 61= 62 M L09NAGUML9_0 01- 027.qxd 10 / 21/ 07 2:45 AM Page 15 Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com THIRD COUR...

Ngày tải lên: 12/08/2014, 11:20

... 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

... Servers 11 5 5 .1. 11 Centralization and Standards 11 6 5 .1. 12 Performance 11 6 5 .1. 13 Monitoring 11 9 5 .1. 14 Service Rollout 12 0 5.2 The Icing 12 0 5.2 .1 Dedicated Machines 12 0 5.2.2 Full Redundancy 12 2 5.2.3 ... xiii 11 .2 The Icing 315 11 .2 .1 Make Security Pervasive 315 11 .2.2 Stay Current: Contacts and Technologies 316 11 .2.3 Produce Metrics 317 11 .3...

Ngày tải lên: 14/08/2014, 14:20