IR spectrum of poly

Figure 9. IR Spectrum of Poly(H-Phenyl-3,4-Dimethylene pyrrole).

Figure 2. IR spectrum of poly(5-methyl-l,4-hexadiene) prepared with a EttAlCl/ h-TiCl3 catalyst at 0°C in pentane solvent. Reproduced, with permission from Ref. 13. Copyright 1979, American Institute of Physics.

Figure 6. IR spectrum of poly(l,4-phenyleneoxide) obtained by the electrolysis of phenol.

C NMR spectroscopy of the reaction mixture is useful not only to determine the presence of coupling products, but also to assign the tacticity of the copolymer product. The solution IR spectrum of poly(cyclohexene carbonate) shows three stretching bands corresponding to vc,0 of the copolymer at 1750 cnr1, and that of... 

Radical copolymerization of OVE with AN was carried out using AIBN in acetonitrile at 60 C for lOh. Poly(OVE-co-AN) was identified by an FT-IR spectrometer. The FT-IR spectrum of poly(OVE-co-AN) exhibited characteristic peaks of cyclic carbonate C=0 band at 1790 cm, ether C-0 band at 1720 cm and CN band at 2250 cm. In order to estimate the monomer reactivity ratio for the copolymer, the copolymer composition was calculated by... 

In the cyclopolymerization of methacrylic anhydride(MA) as a typical 1,6-diene, five- and six-membered ring anhydride structures can be formed, respectively corresponding to intramolecular hh and ht addition of uncyclized radical. The IR spectrum of poly-MA has been tentatively compared earlier with that of poly-MA prepared by dehydration of poly(methacrylic acid)(37) no five-membered cyclized anhydrides were detected, any absorption at higher frequency due to the strain of a five-membered ring being absent. 

The IR spectrum of poly(vinyl methyl ether) (PVME) in Fig. 17 is quite similar to the spectrum of PEG. PVME has also a strong C-O-C stretching band which is composed of the antisymmetric and symmetric vibration mode (Schmidt et al. 2003). The vibrations of the aliphatic chain between 1,250 and 1,350 cm are very weak or even nonexistent. 

The IR spectrum of poly(vinyl pyrrofidone) (PVP) in Fig. 18 is dominated by the strong C = 0 stretching mode that absorbs between 1,560 and 1,730 cm . Due to molecular interactions the band is broad and asymmetric. The pyridine ring leads to a more complex spectrum. Ring vibrations occur mainly between 1,100 and 1,300 cm. Vibrations of the C-N bond are generally weak for tertiary amines. 

The IR spectra of poly(amic acid) BAPDM/PMDA(PAA) and the corresponding polyimide BAPDM/PMDA(PI) are shown in Fig. 2.7. The IR spectrum of poly(amic acid) BAPDMZPMDA(PAA) [Fig. 2.7(A)] showed major absorption peaks at 1666, 1537, and 1715 cm assigned to amide I, amide II, and carbonyl group (C=0), respectively, and characteristic absorption around 3250 cm for N-H and 0-H groups. In the spectrum of the polyimide BAPDM/PMDA(PI). [Fig. 2.7(B)] obtained by thermal imidization, the characteristic bands at 1760 and... 

Figure 11, IR spectrum of poly(2,4-Hexadiene) film cast from CHCl. ... 

Figure 3. Pyrolysis FTIR. (a) Vapor phase IR spectrum of poly(styrene) pulse pyrolyzed at 750 C/10 sec. (b) TimsHosolved l rolysis-FTIR spectrum of CI-PVC (60 C/min to 900 C). (c) HCI vapor phase FTIR spectrum (3500-2500 cm-1) firam CI-PVC pyrolysis (60 C/min to 900 C in helium), (d) Time-resolved Pyrolysis-FTIR spectrum of ethylene-vinyl acetate copolymer (60 C/min to 900 C in helium).

Fig. 11-10 IR-spectrum of poly(3-octylthiophene) After Reference [261, 262], reproduced with permission.

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