ORGANIC AND PHYSICAL CHEMISTRY OF POLYMERS phần 8 ppsx
ORGANIC AND PHYSICAL CHEMISTRY OF POLYMERS phần 8 ppsx
... 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...
ORGANIC AND PHYSICAL CHEMISTRY OF POLYMERS phần 3 ppsx
... 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
is the molar mass of the solute.
One ... m
a
,m
c
,andm denote the mass of the amorphous and crystalline
phases and the total mass phases, respectively.
If
V
c
, V,ρ
c
, and ρ are the bulk volumes and the...
ORGANIC AND PHYSICAL CHEMISTRY OF POLYMERS phần 1 docx
... transitions and relaxations of polymers, their mechanical properties and
their rheology. These thirteen chapters are rounded off by monographs (chapters
XIV to XVI) of natural polymers and of some ... between dipoles, R and T being the gas constant and absolute
Organic and Physical Chemistry of Polymers, by Yves Gnanou and Michel Fontanille
Copyright 20 08 J...
ORGANIC AND PHYSICAL CHEMISTRY OF POLYMERS phần 2 ppt
... volume of pure solvent and N
a
is Avogadro’s number.
For the calculation of the entropy of mixing, it is necessary to consider the con-
formational entropies of pure solvent, of pure polymer, and of ... the mixing and also the existence of lower and higher
critical temperatures of phase separation when there is a great disparity in the size
of components 1 and 2. A...
ORGANIC AND PHYSICAL CHEMISTRY OF POLYMERS phần 4 pptx
... 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...
ORGANIC AND PHYSICAL CHEMISTRY OF POLYMERS phần 5 potx
... Probability (P
tr
) of formation of i, h,ands triads, according to Bernouillian statistics.
In Figure 8. 1 are plotted the variations of the probabilities of existence of the
various types of triads against ... associated with a
low value of the energy of activation of the process (E
a
∼10 kJ·mol
−1
).
Table 8. 8. Rate constants of termination by combination
(k
tc
) for...
ORGANIC AND PHYSICAL CHEMISTRY OF POLYMERS phần 6 doc
... 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 ... comparison of a
pK
a
of 41 with that of water which is the conjugated acid of metal hydroxides
gives an idea of the very high reactivity of the conjugate base. This imposes...
ORGANIC AND PHYSICAL CHEMISTRY OF POLYMERS phần 7 docx
... 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 mass of polymer ... 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....
ORGANIC AND PHYSICAL CHEMISTRY OF POLYMERS phần 9 ppt
... 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(4-methylpent-1-ene) have attained the
industrial level.
Organic and Physical Chemistry of Polymers, by Yves Gnanou and Michel Fontanille
Copyright 20 08...
ORGANIC AND PHYSICAL CHEMISTRY OF POLYMERS phần 10 ppt
... points: 58 60, 64.
Biopolymers: 493.
Bipolymers: 23.
Bisphenol A: 562, 563, 576, 579, 587 ,
588 , 596–5 98.
Bisphenol F: 597.
Blend (polymer-polymer): 49, 82 87 ,
131, 133, 4 78, 480 , 5 28, 531, 579.
Blobs: ... 283 .
Hyperbranched (polymer): 395–3 98.
Ideal solutions: 50, 54, 55, 66.
Initiation, Initiators (of polymerizations):
249, 250, 256–2 58, 260, 262, 263,
265, 266, 2 68 274, 2 78...
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