Crystallization behavior and morphological characterization of poly(ether ether ketone)

Isothermal crystallization of poly(ether ether ketone) with different molecular weights over a wide temperature range

“…These double melting endotherms of PEEK have been widely explained by a dual lamellar population model . Bassett et al have observed thin lamellae, which gave the lower melting endotherm, located between thick primary lamellae using a transmission electron microscope .…”

“…These double melting endotherms of PEEK have been widely explained by a dual lamellar population model. [48] Bassett et al have observed thin lamellae, which gave the lower melting endotherm, located between thick primary lamellae using a transmission electron microscope. [22] Verma et al have detected the formation of the secondary lamellar stack with a thickness of $70 μm after the formation of the primary lamellar stack of $120 μm thickness, through real time small-angle X-ray scattering (SAXS).…”

Opposite role of different carbon fiber reinforcements on the non-isothermal crystallization behavior of poly(etheretherketone)

“…crystallization during processing conditions, and ensures that crystallization behavior observed during the study is not significantly influenced by the sample preparation procedure [3,21]. After the heating step, samples were cooled down to 30 C at different cooling rates (2,5,10,20 and 50 C/min). Although thermal lag is known to affect the accuracy of the DSC results [22], a number of studies have demonstrated that it has a moderate effect within the range of cooling rates and sample masses investigated here [9,22].…”

Crystallization, recrystallization, and melting of polymer crystals on heating and cooling examined with fast scanning calorimetry

“…The feature of fast temperature scanning of FSC allows investigating crystallization, reorganization, and melting kinetics quantitatively. The application of FSC has been successful in the scrutiny of these issues for polyamide (PA), poly(acrylonitrile) (PAN), poly(ɛ–caprolactone) (PCL), polyethylene (PE), poly(ether ether ketone) (PEEK), poly(ethylene terephthalate) (PET), poly(butylene terephthalate) (PBT), poly(trimethylene terephthalate) (PTT), poly( l ‐lactic acid) (PLLA), isotactic polypropylene (iPP), polyphenylene sulfide (PPS), isotactic polystyrene (iPS), poly(vinylidene fluoride) (PVDF), or polyvinyl alcohol (PVA) …”

“…[8][9][10] The feature of fast temperature scanning of FSC allows investigating crystallization, reorganization, and melting kinetics quantitatively. The application of FSC has been successful in the scrutiny of these issues for polyamide (PA), [14][15][16][17] poly(acrylonitrile) (PAN), [18] poly(E-caprolactone) (PCL), [19][20][21] polyethylene (PE), [22][23][24][25] poly(ether ether ketone) (PEEK), [26][27][28] poly(ethylene terephthalate) (PET), [29,30] poly(butylene terephthalate) (PBT), [31][32][33][34][35][36][37] poly(trimethylene terephthalate) (PTT), [38,39] poly(L-lactic acid) (PLLA), [40] isotactic polypropylene (iPP), [32,41,42] polyphenylene sulfide (PPS), [43] isotactic polystyrene (iPS), [44,45] poly(vinylidene fluoride) (PVDF), [46,47] or polyvinyl alcohol (PVA). [48] In this article, we review kinetic studies on polymer crystallization (nonisothermal or isothermal) and melting focusing on PBT, PPS, and iPP.…”