Nonisothermal crystallization of poly(phenylene sulfide) in presence of molten state of crystalline polyamide 6

Mai, Kancheng; Zhang, Shengchun; Zeng, Hanmin

doi:10.1002/(sici)1097-4628(19991220)74:13<3033::aid-app4>3.0.co;2-h

Cited by 18 publications

(19 citation statements)

References 26 publications

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“…It seems that in the immiscible PPS/TLCP composites55 that TLCP has strong nucleation effect, resulting in an increase in the local ordering of the PPS chains in the molten state of the composites because of possible higher interfacial tension for composites. Similar phenomenon in PPS/PA‐6 has also been reported by Mai et al24…”

Section: Resultssupporting

confidence: 88%

“…The crystallization behavior of PPS in PPS composites with solid fillers10–22 and several other thermoplastic polymers23–40 has been studied extensively. The blending of fibrous fillers was found to result in enhanced rate of crystallization, particularly by armid fibers 10–14.…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, there have been a number of reports on the nonisothermal crystallization and melting behavior of PPS in its blends with other thermoplastics 23–27. For example, Zhang et al23 found that in PPS/poly (ether ether ketone) (PEEK) blend, the crystalline PEEK markedly accelerated the crystallization rate of PPS and changed the crystallization mechanisms of PPS from homogeneous to heterogeneous nucleation.…”

Section: Introductionmentioning

confidence: 99%

“…For example, Zhang et al23 found that in PPS/poly (ether ether ketone) (PEEK) blend, the crystalline PEEK markedly accelerated the crystallization rate of PPS and changed the crystallization mechanisms of PPS from homogeneous to heterogeneous nucleation. In the case of PPS/polyamide‐6 (PA‐6) blends the results indicate that the crystallization parameters of PPS become modified to a greater extent than those of PA‐6 in the blends and both found to crystallize at higher temperatures, suggesting a faster rate of crystallization, in the presence of interfacial interactions between two component polymers 24. Similarly, in the case of PPS/poly (ethylene terephthalate) blends, the acceleration of crystallization of PPS is attributed to the presence of local ordering at interface leading to enhanced nucleation 25.…”

Section: Introductionmentioning

confidence: 99%

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Nonisothermal crystallization kinetics of poly (phenylene sulphide) in composites with a liquid crystalline polymer

Kalkar

Deshpande

Kulkarni

2010

J Polym Sci B Polym Phys

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The article deals with the melting and nonisothermal crystallization behavior of neat poly (phenylene sulphide) (PPS) and its composites with a thermotropic liquid crystalline polymer (TLCP)—Vectra A950, prepared by melt mixing and probed by differential scanning calorimetry. The various macrokinetic models namely, the Ozawa, the modified Avrami, the Tobin, and the Mo models were applied to describe the crystallization kinetics under nonisothermal conditions. The kinetic crystallizabilty of PPS/TLCP composites calculated using the approach of Ziabicki varies depending on these two composite composition‐induced effects. Similarly Mo model predicts that to obtain a higher degree of crystallizabilty for PPS/TLCP composites, a higher cooling rate should be used. The effective energy barrier based on the differential isoconversional method of Friedman is found to be an increasing function of relative degree of melt conversion. The effect is explained in terms of nucleation theory proposed by Wunderlich to crystallization of polymers. The Lauritzen–Hoffman parameters are estimated using G = 1/t0.5 effective activation energy equation proposed by Vyazovkin and Sbirrazzuoli. The Kg values estimated from latter equations are more comparable with values obtained using isothermal crystallization data than 1/t0.5 method. Furthermore, the kinetic analysis using this equation shows a regime transition from regime II to regime III for 100/00, 90/10, 80/20 PPS/TLCP composites, basically attributed to reduced mobility of PPS chains in composites. This regime II to III transition is accompanied by a morphological transition from defective spherulitic sheaf‐like structures to ordered sheaf‐like structures. © 2010 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 48: 1070–1100, 2010

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Section: Resultssupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Nonisothermal crystallization kinetics of poly (phenylene sulphide) in composites with a liquid crystalline polymer

Kalkar

Deshpande

Kulkarni

2010

J Polym Sci B Polym Phys

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“…Poly(phenylene sulfide) (PPS) is one of the most important thermoplastic engineering polymers because of exhibiting excellent thermal stability, chemical resistance, and flame resistance. These literatures mainly focus on the crystallization morphology of PPS in quiescent condition [3][4][5][6][7][8][9][10][11][12] or in shear condition, [13][14][15] the PPS/other polymers or fillers composites, [16][17][18][19][20][21][22] the relation between molecular structure and crystallization behavior, 23,24 the crystallization kinetics, [25][26][27][28][29][30] and the influence of crystallinity on properties. 2 The transcendent properties of PPS greatly depend on its unique structure especially on its crystallizability.…”

Section: Introductionmentioning

confidence: 99%

Influence of Thermal Cross‐Linking Temperature on the Crystallization Behavior of Poly(phenylene sulfide)

Wang

et al. 2015

Adv Polym Technol

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The isothermal and nonisothermal crystallization behaviors of poly(phenylene sulfide) (PPS) are systematically investigated by differential scanning calorimetry. The results indicate that the thermal cross-linking temperature have an important impact on crystallization behaviors of PPS apparently. With the increase in the thermal cross-linking temperature, the crystallization properties are promoted. It is attributed to the chemically cross-linking points and formation of network structures during the high thermal cross-linking temperature, which lead to increment of the effective nucleating sites. Meanwhile, kinetic analysis of crystal growth demonstrates that the regime transitions of PPS crystal growth, from regime III to regime II and from regime II to regime I, can be really observed at different thermal cross-linking temperatures, respectively. The temperature of regime III/II and II/I transitions decreases with the increase in cross-linking temperature. C 2015 Wiley Periodicals, Inc. Adv Polym Technol 2015, 34, 21498; View this article online at wileyonlinelibrary.com. Experimental MATERIALS AND PREPARATIONThe PPS resin powder was obtained from the Deyang Science and Technology (Deyang city, Sichuan province) (People's Republic of China). Its molecular weights are M w = 48 000 and M n = 21 000. The samples were kept at a constant time (5 min) with the different thermal cross-linking temperatures (330, 340, 350, and 360 o C) by the RS600 rotary rheometer (produced by HAAKE in Germany). The PPS samples with the different

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Multiple melting behavior of polyphenylene sulfide blends with polyamide 6

Mai¹,

Zhang²,

Gao³

et al. 2000

J. Appl. Polym. Sci.

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Although there are many studies on the multiple melting behavior of polyphenylene sulfide (PPS) homopolymer, similar investigations on PPS component in PPS blends with thermoplastics are relatively rare. In the present paper, the multiple melting behavior of PPS blends with polyamide 6 (PA6) have been investigated by differential scanning calorimetry (DSC). The double melting peaks are also observed for PPS in the blends. Although the annealing temperature and time as well as the heating rate of DSC scanning are different, the lower melting peak temperature of PPS in the blend is higher than that of pure PPS and the higher melting peak temperature is lower than that of pure PPS. It is suggested that PA6 can accelerate the cold‐crystallization of amorphous PPS due to the possible presence of interfacial interaction between the component polymers to induce the heterogeneous nucleation, and increase the perfection of PPS crystals. The multiple melting behavior of PPS in the blends are explained by recrystallization. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 78: 1579–1585, 2000

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Nonisothermal crystallization of poly(phenylene sulfide) in presence of molten state of crystalline polyamide 6

Cited by 18 publications

References 26 publications

Nonisothermal crystallization kinetics of poly (phenylene sulphide) in composites with a liquid crystalline polymer

Nonisothermal crystallization kinetics of poly (phenylene sulphide) in composites with a liquid crystalline polymer

Influence of Thermal Cross‐Linking Temperature on the Crystallization Behavior of Poly(phenylene sulfide)

Multiple melting behavior of polyphenylene sulfide blends with polyamide 6

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