Dissolution of MWCNTs by using polyoxadiazoles, and highly effective reinforcement of their composite films

Enhanced gas permeability by fabricating mixed matrix membranes of functionalized multiwalled carbon nanotubes and polymers of intrinsic microporosity (PIM)

“…The addition of small amounts of CNTs to a polymer matrix is expected to enhance the mechanical properties significantly [53,59]. The summary of mechanical properties obtained from the films of PIM-1 and f-MWCNTs /PIM-1 MMM, in terms of Young's modulus (E), tensile strength (σ M ), and elongation at break (ε) with standard deviations is reported in Table 7.…”

Preparation and characterization of sulfonated poly(1,3,4-oxadiazole)/multi-walled carbon nanotube composite films with high performance in electric heating and thermal stability

“…The oxadiazole ring of sPOD backbone can be characterized by the bands at~1468 cm À1 and~1415 cm À1 , which are related with C]N stretching, and by the band at~1085 cm À1 , which are associated with eCeOeCe stretching. The two peaks at~1 600 cm À1 and~1485 cm À1 are associated with C]C stretching of the aromatic groups of sPOD [21]. On the other hand, it should be mentioned that the C]C stretching band was slightly shifted from 1602 cm À1 for the neat sPOD to 1598 cm À1 for the composite film with 10 wt% MWCNT with increasing the MWCNT content in the composite films, which strongly supports the presence of pep interaction between aromatic rings of sPOD and pristine MWCNTs in the composite films.…”

“…As the result, for the composite film with 15 wt% MWCNT, the storage modulus up to 3.6 GPa at 300 C as well as the electrical resistivity of 10 7 U cm was attained. Loos et al have manufactured sPOD/ MWCNT composite films by a solution route and have characterized that nonmodified MWCNTs were homogeneously dispersed in the sPOD matrix [21]. For sPOD composite films with 1.0 wt% MWCNT, high performance in tensile mechanical properties such as tensile strength (~220 MPa), elongation at break (~116%), and tensile energy to break (~178 MJ/m 2 ) as well as in electrical resistivity (~1.5 Â 10 6 U cm) was reported.…”

“…Among carbon nanomaterials, carbon nanotube (CNT) and its derivatives have been mostly considered as promising functional nanofiller materials to produce high performance polymer composites, due to their unique structure and remarkable mechanical, electrical, thermal, optical and catalytic properties [10e19]. Accordingly, POD-based composites reinforced with CNTs have been recently investigated [20,21]. Gomes et al have prepared sPOD-based composites containing multi-walled carbon nanotube (MWCNT) via in situ polymerization and have investigated microstructures, thermo-mechanical and electrical properties [20].…”

Novel Hybrids Derived from Poly(thiourea-amide)/Epoxy and Carbon Nanotubes

“…Multi-walled CNTs can be dispersed by using mechanical methods as high-energy ultrasonic probe, sheer mixing, by covalent functionalization or noncovalent modification. For potential appliance of CNTs in polymer composites, therefore, proper functionalization has been a prerequisite [14][15][16] .…”