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High melting point homopolymer

Ethylene Terephthalate/PTME Terephtalate Copolymer. The ethylene glycol- or 2G-based copolymer (Table II) closely resembles the 4G-based copolymer in having a high melting point, even higher than the 4G copolymer, and excellent tensile and tear strengths. The 2G-based copolymer suffers from having a rather slow rate of crystallization (8,12). Poly (ethylene terephthalate) homopolymer suffers from similar... [Pg.138]

PAN homopolymer melts at approximately 320 °C whereby melting refers to the endothermic breaking up of the highly ordered crystalline regions. The high melting point has been related to molecular stiffness (cf. Sect. 2.1). [Pg.8]

While the homopolymers cannot be processed because of their high melting points there is much interest in the copolymers of norbomene or tetracyclodode-... [Pg.223]

The copolymers are crystalline over a wide compositional range (162) and have high melting points (200-150° Q (161). Nevertheless, ffiese products are real copolymers rather than mixtures of two homopolymers. This follows directly from Fig. 7 and was confirmed by the fractionation data (161,162). The melting-point depression of propylene units in copolymers of low styrene content (159,161) also supports this conclusion [see Fig. 14 in (i59)]. The positions of the styrene unit bands in the IR spectra of the propylene-rich samples is typical for the isolated units. [Pg.126]

PHB can be obtained by solvent extraction after fermentation to yield a highly crystalline (80%) polyester with a high melting point, T = 173-180 °C, and a glass transition temperature (T ) of about 5°C, higher than other biodegradable polyesters. PHB homopolymer has a narrow processing window that can be altered... [Pg.375]

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See also in sourсe #XX -- [ Pg.48 ]



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High melting point

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