Poly melting temperature against

FIGURE 11.2. Plot of melting temperature against crystallization temperature for poly(ethylene oxide), ( ) high crystallinity o low crystallinity. Temperature in degrees Celsius [18]. 

Fig. 3.8 Plot of melting temperature against volume fraction of polymer for isotactic poly(propylene)-alkyl phenol mixtures. (From Nakajima and Fujiwara (24))...

Fig. 3.9 Plot of melting temperatures against volume fractions of polymers for mixtures of poly(N,N sebacoyl piperazine) with different diluents. Diphenyl ether O < -nitrotoluene...

Fig. 4.1 Plot of melting temperature against percentage atactic poly(styrene) for isotactic-atactic poly(styrene) blends. Molecular weights of atactic poly(styrene) are indicated in the figure. (From Yeh and Lambert (21))...

Fig. 4.7 Plot of melting temperature against composition for blends of poly(ether ether ketone)-poly(ether ketone) o and of poly(ether ether ketone)-poly(ether ether ketone ketone) . (From Harris and Robeson (61))...

Fig. 5. 20 Plot of melting temperatures against mole fraction of comonomers for copolymers of poly(methylene oxide) formed by solid-state polymerization. Comonomers A —CH2—CHz—O— —(CH2)3—O— -2. (From Drosclier, et al. (144))...

Fig. 5.27 Melting temperature against composition for block copolymers of poly(ethylene terephthalate) with ethylene succinate(l) ethylene adipate(2) diethylene adipate(3) ethylene azelate(4) ethylene sebacate(5) ethylene phthalate(6) and ethylene isoph-thalate(7). For comparative purposes, data from random copolymers with ethylene adipate and with ethylene sebacate also are given. (From Kenney (189))...

Fig. 5.34 Plot of melting temperature against composition of block copolymers of poly(hexamethylene sebacate), HMS, with its isomer poly(2-methyl-2-ethyl-l,3-propylene sebacate), or with poly(dimethyl siloxane) O. (From O Malley (214))...

Fig. 6.1 Plot of observed melting temperature against number of carbon atoms in side-group for the isotactic poly(l-alkenes). (o from Reding (22) from Tumer-Jones (23) from Trafara et al. (24))...

Fig. 6.2 Composite plot of different homologous series illustrating odd-even effect. Plot of melting temperature against number of carbon atoms, (a) Aliphatic poly(esters) based on decamethylene glycol number of carbon atoms in dibasic acid, (b) Aromatic poly(esters) based on terephthalic acid number of carbon atoms in diol. (c) Aliphatic poly(amides) based on hexamethylene diamine number of carbon atoms in diacid, (d) Polyfurethanes).

Fig. 6.3 Plot of observed melting temperatures against the total number of carbon atoms in the stmctural repeating unit of poly(amldes). Both the diamines and diacids contain an even number of carbon atoms.

Fig. 6.4 Plot of melting temperatures against the total number of carbons of poly(amides) where either one or both of the diamine and diacid contain an odd number of carbons.

Fig. 6.12 Plot of melting temperature against characteristic ratio for indicated polymers. (1) Polyethylene (2) i-poly(propylene) (3) i-poly(isopropyl acrylate) (4) s-poly(isopropyl acrylate) (5) i-poly(methyl methacrylate) (6) s-poly(methyl methacrylate) (7) poly(dimethyl siloxane) (8) poly(diethyl siloxane) (9) poly(dipropyl siloxane) (10) poly(cis-l,4-isoprene) (11) poly(trans-l,4-isoprene) (12) poly(cis-1,4-butadiene) (13) poly(trans-1,4-butadiene) (14) poly(caprolactone) (15) poly(propiolactone) (16) poly(pivalolactone) (17) poly(oxymethylene) (18) poly(ethylene oxide) (19) poly(trimethylene oxide) (20) poly(tetramethylene oxide) (21) poly(hexamethylene oxide) (22) poly(decamethylene oxide) (23) poly(hexamethylene adipamide) (24) poly(caprolaetam) (25) poly(ethylene terephthalate) (26) poly(ethylene sulfide) (27) poly(tetrafluoroethylene) (28) i-poly(styrene) (29) poly(acrylonitrile) (30) poly(l,3-dioxolane) (31) poly(l,3-dioxopane) (32) poly(l,3-dioxocane) (33) bisphenol A-poly(carbonate).

Fig. 8.8 Plot of reciprocal of extrapolated equilibrium melting temperature against f( ) according to Eq. (8.47) for cis-poly(isoprene).(39)...

Fig. 10.19 Plot of melting temperature against time after isothermal crystallization, at indicated temperatures, of a hydrogenated poly(butadiene), 2.3 mol percent branch points, = 108 000.(24)...

Since both the glass transition temperature and the melting temperature depend on the mobility of segments or molecules, a relationship between these two parameters should exist. If the cumulative frequencies of To / Tm ratios are plotted against these ratios, then a smooth curve is obtained for more than 70 homopolymers (Figure 10-20). Deviations are only found for low TgITm ratios and these belong to unsubstituted polymers such as poly(ethylene), poly(oxymethylene), poly(oxyethylene), etc. The median of the curve is independent of the constitution of the polymers, and corresponds to the empirical Beaman-Boyer rule ... 

Fig. 4.2 Plot of melting temperature of poly(2,6-dimethyl 1,4-phenylene oxide) against its weight fraction, W2, in mixtures with toluene and atactic poly(styrene). (From Kwei and Frisch (29))...

Fig. 5.12 Plot of observed melting temperature Tm against mol percent of structural irregularities in the chain. O HPBD ethylene-butene A ethylene-hexene v ethylene-octene ethylene-norbornene. — 90 000. HPBD stands for hydrogenated poly-(butadiene).(74-76,78)...

Fig. 6.5 Plot of melting temperatures, T, against number of CH2 groups in poly(ethers) O and poly(thioethers) .

Fig. 4.11. A plot of observed melting temperature, Tm, against the mole percentage of structural irregularities in the polyethylene chain, o, HPBD , ethylene-butene V, ethylene-octene A, ethylene-hexene , ethylene-norbomene. M 90000. HPBD stands for hydrogenated poly (butadiene). Reproduced from [30], copyright 2000 with permission from Elsevier.

Fig. 4.29 Plot of melting temperature, T , against crystallization temperature, T for poly(dl-propylene oxide) (After Magill).

Fig. 12.2 Melting profile of poly(dA-dT) DNA. poly(dA-dT) double-stranded DNA (10.0 pg) was mixed with HpkA (17.3 pg final concentration, 2.34 pM) in the presence or absence of spermine or potassium chloride, and thermal denaturation of the complex was examined according to the method of Higashibata et al. (2000). AAb/AT was plotted against temperature for six different mixtures 1, poly(dA-dT) alone 2, poly(dA-dT) plus HpkA (2.34 pM) 3, poly(dA-dT) plus spermine (10 pM) 4, poly(dA-dT) plus HpkA (2.34 pM) and spermine (10 pM) 5, poly(dA-dT) plus potassium chloride (1.0 M) and 6, poly(dA-dT) plus HpkA (2.34 pM) and potassium chloride (1.0 M). The calculated melting temperatures for mixtures 1 to 6 were 47.5,63.5,65.5,75.0,76.5, and 77.0 °C, respectively...

It is universally observed that in the vicinity of the melting temperature the rate at which spheruhtes are generated depends very strongly on the crystallization temperature. The rate increases very rapidly as the temperature is lowered. As was pointed out earlier, the rate at which spherulite centers are generated in poly(decamethylene adipate) decreases by a factor of 10 as the crystallization temperature is raised from 67 to 72°C.(22,107) The effect is quite general and is illustrated in Fig. 9.26 for the crystallizahon of poly(hexamethylene adipamide).(108) Here the number of spheruhtes that are formed per unit volume is plotted against the rime for a series of... 

Fig. 11.13 Plot of left-hand side of Eq. (11.8) against Tja/TAT for blends of poly(pivalolactone>q)oly(vinylidene fluoride Equilibrium melting temperature arbitrarily proportional over a 10 °C interval (see text). Composition poly(pivalolactone)/poly(vinylidene fluoride) 100/0 o 70/30 T 50/50 v 30/70 20/80 10/90. (a) f = 0.05, (b)f = 0.25. (Data from (5))...

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