Mechanical mapping of the interphase in carbon fiber reinforced poly(ether-ether-ketone) composites using peak force atomic force microscopy: Interphase shrinkage under coupled ultraviolet and hydro-thermal exposure. (October 2016)

• Record Type: Journal Article
• Authors: Niu, Yi-Fan; Yang, Ying; Gao, Sai; Yao, Jia-Wei
• Is Part Of: Polymer testing. Volume 55(2016:Oct.)
• Page Start: 257
• Page End: 260
• Publication Date: 2016-10
• Subjects: Polymer matrix composites (PMCs) -- Interphase -- Atomic force microscopy (AFM) -- Mechanical mapping -- Shrinkage; Polymers -- Testing -- Periodicals; Polymères -- Tests -- Périodiques; 620.1920287
• DOI: 10.1016/j.polymertesting.2016.09.008
• Languages: English
• ISSNs: 0142-9418

Abstract

Abstract: The interphase size and properties of carbon fiber reinforced poly(ether-ether-ketone) composites (T300/PEEK) were quantitatively characterized using Peak Force Quantitative Nano-Mechanics (PF-QNM) with atomic force microscopy (AFM). The elastic modulus maps of the interfacial region were obtained, and the interphase dimension was determined based on the elastic modulus profile. The interphase thickness of T300/PEEK under coupled ultraviolet (UV) and hydro-thermal degradation decreased from 70.1 ± 8.6 to 18.3 ± 1.8 nm after 1560 h of exposure. The shrinkage of interphase size was attributed to the embrittlement of PEEK after crosslinking reactions induced by UV exposure. This technique shows a great potential in the quantitative measurement of nanomechanics relevant in polymer and polymer composites, where the structure and properties of the interphase are of special interest.