Thesis
On the synthesis & characterization of Ti₃C₂T_x MXene polymer composites
Master of Science (M.S.), Drexel University
Jun 2017
DOI:
https://doi.org/10.17918/etd-7378
Abstract
An investigation into the synthesis and characterization of Ti₃C₂T_x MXene polymer composites has been made, where an improvement in material properties at low filler weight percents has been achieved. Poly(acrylic acid) based composite material showed improved mechanical performance, namely a 144.8% increase in tensile strain to failure with no reduction in elastic modulus and only slight reduction in ultimate tensile strength. FTIR analysis of these films show evidence for hydrogen bonding between the functional groups of poly(acrylic acid) and the surface functionalization of Ti₃C₂T_x. Nylon-6 based composites loaded at 5 and 10 wt% MXene were successfully produced by both a solvent cast and extrusion method, with MXene content verified by thermogravimetric analysis (TGA). Samples loaded at 5 wt% exhibited a 30.96% increase in modulus of elasticity, with a 10.9% increase in ultimate tensile strength. A water barrier phenomena was observed in the case of these MXene containing composites, as evidenced by the characteristic shape of the stress-strain plot. Differential scanning calorimetry results reveal a 15 °C increase in the crystallization temperature (T_c) with a enthalpy of crystallization 18% lower than neat nylon-6 and a degree of crystallinity of 60-70%, suggesting that MXene acts as a site for heterogeneous nucleation. X-ray diffraction results indicate that full delamination of multilayer MXene was not achieved through mechanical shearing alone, however improved mechanical properties were achieved despite this, suggesting that further improvements could be made if full exfoliation is achieved.
Metrics
116 File views/ downloads
77 Record Views
Details
- Title
- On the synthesis & characterization of Ti₃C₂T_x MXene polymer composites
- Creators
- Michael S. Carey - DU
- Contributors
- Caroline L. Schauer (Advisor) - Drexel University (1970-)
- Awarding Institution
- Drexel University
- Degree Awarded
- Master of Science (M.S.)
- Publisher
- Drexel University; Philadelphia, Pennsylvania
- Number of pages
- vii, 43 pages
- Resource Type
- Thesis
- Language
- English
- Academic Unit
- Materials (Science and) Engineering (Metallurgical Engineering) (1970-2026); College of Engineering (1970-2026); Drexel University
- Other Identifier
- 7378; 991014632057504721