Sebacamide poly

Poly (1,3 -dichloropropyl methacrylate) Poly(hexamethylene sebacamide) Poly(e-caprolactam)... 

Poly(hexamethylene sebacamide) Poly(hexamethylene adipamide)... 

CHEMICAL NAMES Poly(hexamethylene sebacamide), poly(hexamethylene decanoamide), poly(iminohexamethylene-iminosebacoyl), poly[imino-l,6-hexanediylimino(l,10-dioxo-l,10-decanediyl)] (CAS Registry No. 9008-66-6)... 

Fig. 5.8 Melting temperature-composition relations for various copolyesters and copolyamides. , poly(ethylene terephthalate/adipate) o, poly(ethylene terephthalate/sebacate) , poly(hexamethylene adipamide/sebacamide) , poly(hexamethylene adipamide/capro-amide). (From Edgar and Ellery (59), Sonnerskog (60) and Izard (61))...

Poly(4,4 -oxydiphenylene pimelamide) Poly (4,4 -oxydiphenylene pyromellitimide) Poly(3,4 -oxydiphenylene sebacamide) Poly(4,4 -oxydiphenylene sebacamide) Poly (3,4 -oxydiphenylene suberamide) 324.38 315 1832 t... 

Poly(m-xylylene sebacamide) Poly(p-xylylene sebacamide) 302.42 193 402 t... 

The polyamides poly(hexamethylene sebacamide) and poly(hexamethylene adipamide) are also widely known as nylon-6,10 and nylon-6,6, respectively. The numbers following the word nylon indicate the number of carbon atoms in the diamine and dicarboxylic acid, in that order. On the basis of this same system, poly (e-caprolactam) is also known as nylon-6. 

Synthesis. Poly(ethylene sebacamide) (A), poly(1,2-propylene sebacamide) (B), poly(2-hydroxy-l,3-propylene sebacamide) (E), poly(2-hydroxy-l,3-propylene sebacamide-co-2propylene sebacamide) (F), poly(benzylethylene sebacamide) (H), and poly(piper-azinyl sebacamide) (J) were prepared by interfacial polymerization using carbon tetrachloride and water as solvents. (4)... 

Poly(l,l-dimethylethylene sebacamide) (C) was prepared by solution polymerization of 1,1-dimethylethylenediamine and seba-coyl chloride in chloroform using triethylamine as base. 

Photolysis of the unsubstituted poly(ethylene sebacamide) (A), methylated poly(l,2-propylene sebacamide) (B), and poly(l,l-dimethylethylene sebacamide) (C) resulted in mostly chain fragmentation as indicated by the decreases in intrinsic viscosities of the polymer samples, Table 1. The same decrease in intrinsic viscosity was also observed for polyurea D. Polymer A and D remained bio-inert under the testing condition whereas the abilities for polymers B and C to support the growth of Apergillus niger were improved by photolysis. 

Photolysis of hydiroxylated polymers E, F, G, benzylated polymers H and I, and poly(piperazinyl sebacamide) J all resulted in crosslinking as the polymer samples became insoluble after photolysis. Interestingly enough, however, with the exception of polymer H, all polymer samples were found to be better carbon nutrients for the fungus Aspergillus niger after photolysis. 

Special terminology based on trade names has been employed for some polymers. Although trade names should be avoided, one must be familiar with those that are firmly established and commonly used. An example of trade-name nomenclature is the use of the name nylon for the polyamides from unsubstituted, nonbranched aliphatic monomers. Two numbers are added onto the word nylon with the first number indicating the number of methylene groups in the diamine portion of the polyamide and the second number the number of carbon atoms in the diacyl portion. Thus poly(hexamethylene adipamide) and polyfhexamethylene sebacamide) are nylon 6,6 and nylon 6,10, respectively. Variants of these names are frequently employed. The literature contains such variations of nylon 6,6 as nylon 66, 66 nylon, nylon 6/6, 6,6 nylon, and 6-6 nylon. Polyamides from single monomers are denoted by a single number to denote the number of carbon atoms in the repeating unit. Poly(e-caprolactam) or poly(6-aminocaproic acid) is nylon 6. 

The first truly high-mnlecular-weight polyamide was made this way in 1935 and lead to the development of the lirsl wholly man-made fiber which became popularly known as nylon, a name coined by Du Pont for fiber-forming polyamides. Numerals representing the number of carbon atoms in lirsl the diamine and then the diacid are used to identify the nylon. Thus, poly(hexamethylene adipamide) is nylon-66 (six-six, not sixty-six), and poly(hexamethylene sebacamide) made from the 10-carbon sebacic acid is nylon-610 (six-ten). 

Figures 1.12 and 1.13 show [t ] values in m- cresol/cyclohexane mixtures for poly (octamethylene terephthamide (POT) and poly(octamethylene sebacamide) (POS).

Fig. 1.12 Intrinsic viscosities of (A), poly(octamethylene sebacamide) (POS) and X, poly(octamethylene terephthalamide) (POT) in m-cresol/cyclohexane mixtures at 25°C. (From ref. [88])...

Poly(heptamethylene pimelamide (nylon 7,7) Poly(octamethylene suberamide) (nylon 8,8) Poly(hexamethylene sebacamide) (nylon 6,10) 303/323 469/487 478/498 488/506... 

Poly(nonamethylene azelamide) (nylon 9,9) Poly(decamethylene azelamide) (nylon 10,9) Poly(decamethylene sebacamide) (nylon 10,10) 319/333 450 487 469/489... 

Typical values of rate coefficients reported [92] for polyamidation in m-cresol include 7.7 x 10 g mmole" sec" for the preparation of poly-(m-xylylene adipamide) and 4.2 (p-xylylene sebacamide) (Table 6). 

Fig. 7. Viscosity of polyamides as a function of solvent power (from ref. 107). 1, poly(hexamethylene sebacamide), 2, poly(ethylene terephthalamide), 3, poly(p-phenylene terephthalamide).

One more example of flash pyrolysis is given below for nylon 6,10 or poly(hexa-methylene sebacamide), CAS 9008-66-6, with the idealized formula [-NH(CH2)6NHCO(CH2)8CO-]n. The Py-GC/MS results are shown in Figure 13.3.7. The pyrolysis was done in similar conditions as for other examples, at 600° C in He, and the separation was done on a Carbowax column (see Table 4.2.2). The peak identification was done using MS spectral library searches only and is given in Table 13.3.5. 

Figure 13.3.7. Result for a Py-GC/MS analysis for nylon 6,10 or poly(hexamethylene sebacamide). Pyrolysis done on 0.4 mg material at 60(f C in He, with the separation on a Carbowax type column.

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