Friction and Scratch Resistance of Polymer Liquid Crystals: Effects of Magnetic Field Orientation
Source abstract
Abstract
We have studied PET/0.6 PHB, an alternating copolymer in which PET is poly(ethylene terephthalate) and PHB is p-hydroxybenzoic acid with the mole fraction of 0.6 PHB. It is a longitudinal polymer liquid crystal (PLC) with the LC sequences in the main chain and oriented along the chain backbone. Material not subjected to the magnetic field, specimens oriented along and perpendicularly to the flux of the magnetic field, were investigated. Static friction, dynamic friction, scratch penetration depth, and healing of the material were determined. Static and dynamic friction parameters for oriented samples have significant higher values for oriented samples. The best scratch resistance is found for the sample aligned along the magnetic field. The results are explained in terms of morphology revealed by scanning electron microscopy and phase structures.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Magnetic and Electromagnetic Effects · Adhesion, Friction, and Surface Interactions · Advanced Physical and Chemical Molecular Interactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (41)
Show source-provided references
1. Garbassi · 2000
2. 39 Handbook of Polymer Testing , edited by Brown R. (Marcel Dekker, New York–Basel, 1999)
3. 10.1016/S1359-6462(97)00099-710.1016/S1359-6462(97)00099-7 ↗
4. 10.1016/1359-6454(95)00172-810.1016/1359-6454(95)00172-8 ↗
5. 10.1016/0921-5093(91)90536-V10.1016/0921-5093(91)90536-V ↗
6. 10.1016/S0921-5093(00)01814-110.1016/S0921-5093(00)01814-1 ↗
7. 10.1080/14328917.2003.1178475410.1080/14328917.2003.11784754 ↗
8. 10.1007/PL0001078410.1007/PL00010784 ↗
9. Hess · Mechanical and Thermophysical Properties of Polymer Liquid Crystals · 1998
10. 10.1063/1.47893510.1063/1.478935 ↗
11. 10.1016/S0032-3861(01)00281-610.1016/S0032-3861(01)00281-6 ↗
12. Brostow · 1996
13. 10.1016/S0142-9418(01)00145-310.1016/S0142-9418(01)00145-3 ↗
14. 10.1016/0032-3861(90)90242-Q10.1016/0032-3861(90)90242-Q ↗
15. Brostow · J. Mater. Ed · 25
16. 10.1016/S0301-679X(98)00007-310.1016/S0301-679X(98)00007-3 ↗
17. 1 Physical Properties of Polymers Handbook, edited by Mark J.E. (American Institute of Physics Press, Woodbury, NY, 1996)
18. 10.1016/0032-3861(96)83703-710.1016/0032-3861(96)83703-7 ↗
19. 10.1016/S1359-6462(96)00378-810.1016/S1359-6462(96)00378-8 ↗
20. 14 Tribology and the Liquid-Crystalline State, edited by Biresaw G. (American Chemical Society, Washington, DC, 1990)
21. 10.1007/s10019-002-0163-910.1007/s10019-002-0163-9 ↗
22. 11 Mechanical and Thermophysical Properties of Polymer Liquid Crystals, edited by Brostow W. (Chapman & Hall, London, U.K., 1998)
23. 10.1016/S0965-9773(98)00102-010.1016/S0965-9773(98)00102-0 ↗
24. Michler · 1992
25. 10.1002/1521-3919(20020301)11:3<308::AID-MATS308>3.0.CO;2-Z10.1002/1521-3919(20020301)11:3<308::AID-MATS308>3.0.CO;2-Z ↗
26. Goldman · 1994
27. 10.1016/S1359-6454(00)00007-010.1016/S1359-6454(00)00007-0 ↗
28. 23 ASTM D 1894–90, American Society for Testing and Materials, West Conshohocken, PA.
29. 10.1016/S0032-3861(98)00357-710.1016/S0032-3861(98)00357-7 ↗
30. 6 Friction and Wear Technology for Advanced Composite Materials, edited by Rohatgi P.K. (ASM International, Materials Park, OH, 1994)
31. 7 Matériaux et contacts: une approche tribologique, edited by Zambelli G. and Vincent L. (Presses Polytechniques Universitaires Romandes, Lausanne, 1998).
32. von Stebut · Surf. Coat. Technol. · 1999 · 160 · 116
33. Rabinowicz · 1995
34. 10.1016/S0079-6425(00)00015-310.1016/S0079-6425(00)00015-3 ↗
35. 10.1016/0301-679X(86)90021-610.1016/0301-679X(86)90021-6 ↗
36. 10.1016/0167-577X(95)00264-210.1016/0167-577X(95)00264-2 ↗
37. 10.1021/ma00086a04210.1021/ma00086a042 ↗
38. Deng · 2000
39. 10.1007/s10019-002-0161-y10.1007/s10019-002-0161-y ↗
40. 10.1002/pi.128310.1002/pi.1283 ↗
41. 10.1016/0032-3861(96)83704-910.1016/0032-3861(96)83704-9 ↗