Electron microscopy of high pressure crystallised poly ( p -phenylene sulfide)

Abstract

High pressure crystallised poly (p-phenylene sulfide) (PPS) samples were investigated with wide angle X-ray diffraction (WAXD), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). The striation appearance, which is the most common feature of polymer extended chain crystals, was clearly observed. Poly (p-phenylene sulfide) extended chain crystals with a C-axis thickness around 10 μm were formed at high pressure. The DSC results showed that the melting temperature of high pressure crystallised PPS samples was up to 332·3°C, which was higher than the values of ideal PPS perfect crystals used by some researchers. Other morphologies formed at high pressure, including crystalbars and regular polygonal crystals of different characteristics, were also presented with the SEM measurements. The obtained PPS extended chain crystals may be used in the re-evaluation of certain parameters crucial to the processing of PPS products such as the equilibrium melting point and melting enthalpy of ideal crystal.

Keywords

CRYSTAL GROWTH EXTENDED CHAIN CRYSTAL HIGH PRESSURE CRYSTALLISATION POLYMERS POLY (P-PHENYLENE SULFIDE)

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References

Lopez

L. C.

and Wilkes

G. L.

: J. Macromot Sci. C , 1989, 29C, 83–151.

Cheng

S. Z. D.

, Wu

Z. Q.

and Wunderlich

: Macromolecules , 1987, 20, 2802–2810.

S. X.

and Cebe

: J. Appl. Polym. Sci. , 1996, 61, 473–483.

Ward

I. M.

: ‘Mechanical properties of solid polymers’, 2nd edn; 1983, New York, John Wiley & Sons.

Ohigashi

and Hattori

: Ferrroelectrics , 1995, 172, 11–32.

Wunderlich

and Arakawa

: J. Polym. Sci , 1964, A–2, 3697-3706.

Gogolewski

: Polymer , 1977, 18, 63–68.

Miyamoto

, Nakafuku

and Takemura

: Polym. 1 , 1972, 3, 122-128.

Hattori

, Hikosaka

and Ohigashi

: Polymer , 1996, 37, 85–91.

10.

Siegmann

and Harget

P. J.

: J. Polym. Sci. Polym. Phys. , 1980, 18, 2181–2196.

11.

L. B.

, Huang

and Hong

S. M.

: J. Mater. Sci. Lett. , 2001, 20, 807–809.

12.

L. B.

, Wang

C. M.

, Huang

, Zhang

and Hong

S. M.

: Polymer , 2001, 42, 8867–8872.

13.

Silvestre

, Di Pace

, Napolitano

, Pirozzi

and Lesario

: J. Polym. Sci. B , 2001, 39B, 415–424.

14.

Menczel

J. D.

and Collins

G. L.

: Polym. Eng. Sci. , 1992, 32, 1264–1269.

15.

Chung

J. S.

and Cebe

: J. Polym. Sci. B , 1992, 30S, 163–176.

16.

Minkova

L. I.

and Magagnini

P. L.

: Polymer , 1995, 36, 2059–2063.

17.

Braday

D. G.

: J. Appl. Polym. Sci. , 1976, 20, 2541–2551.

18.

, Huang

and Oh

I. K.

: Macromot Chem. Physic. , 2007, 208, 405–414.

19.

, Huang

and Huang

: Sci. China A , 1994, 24A, 1218–1224.

20.

Huo

and Cebe

: Colloid Polym. Sci. , 1992, 270, 840–852.

21.

Tabor

B. J.

, Magre

E. P.

and Boon

: Eur. Polym. 1, 1971, 7, 1127-1133.

22.

Perng

L. H.

: Polym. Degrad Stabil. , 2000, 69, 323–332.

23.

Tanaka

: IEEE T. Dielect. El. In. , 2002, 9, 704–716.

24.

L. B.

, Huang

, Zhang

and Hong

S. M.

: Polymer , 2001, 42, 2085–2089.

25.

L. B.

, Huang

, Lu

, Nie

F. D.

, Hong

S. M.

, Wang

C. M.

, Thong

Y. M.

and Wang

: Polymer , 2000, 41, 6943–6947.

26.

, Huang

and Oh

I. K.

: J. Polym. Sci. B , 2007, 45B, 2715–2728.

27.

, Oh

I. K.

, Huang

and Li

L. B.

: Chem. J. Chinese U. , 2007, 28, 385–387.

28.

, Wang

X. L.

, Huang

and Li

L. B.

: Chem. J. Chinese U. , 2005, 26, 1556–1560.

29.

, Huang

, Chen

and Li

L. B.

: J. Polym. Sci. B , 2006, 44B, 3148–3156.

30.

Keller

, Wood

G. G.

and Hikosaka

: Farad Disc. , 1993, 95, 109–128.