| dc.identifier.uri | http://hdl.handle.net/11401/76364 | |
| dc.description.sponsorship | This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree. | en_US |
| dc.format | Monograph | |
| dc.format.medium | Electronic Resource | en_US |
| dc.language.iso | en_US | |
| dc.publisher | The Graduate School, Stony Brook University: Stony Brook, NY. | |
| dc.type | Dissertation | |
| dcterms.abstract | We have successfully fabricated the PP/GNPs nanocomposites that are thermally conductive, processable, and flame resistant. Thermal conductivity measurements indicated that the thermal coefficient scaled linearly with GNP loading, where a value of 2.0W/m*k was achieved at a loading of 40%. Tensile measurement indicated that the modulus increased, linearly with GNPs loading, while the IZOD impact and toughness after an initial decrease, remained constant for loading up to 50%. The torque required for extrusion increased only by 25% over this range indicating that the compound remained processable despite the high loading content. SAXS showed a large decrease in the amount of lamellar folding relative to the neat PP sample, while WAXS and DSC measurements, indicated a slight increase in the degree of crystallinity . These results are consistent with strong adsorption of the PP chains to the GNP, which, while maintaining crystallinity, disrupts the lamellar structure. Cone calorimetry showed that nanocomposites with 10% loading or higher exhibited a dramatic decrease in heat release and mass loss rates. The time to ignition initially decreased relative to the neat PP, then increased and surpassed it by a factor of 2 at 40%. These results paralleled those from conductivity/frequency measurements indicating that percolation occurred. Hence thermal phonon dissipation was effective for a slowly approaching heat front while contact was required for a rapidly approaching front. | |
| dcterms.available | 2017-09-20T16:50:06Z | |
| dcterms.contributor | Butcher, Thomas | en_US |
| dcterms.contributor | Rafailovich, Miriam H | en_US |
| dcterms.contributor | Gersappe, Dilip | en_US |
| dcterms.contributor | Desikan, Anantha. | en_US |
| dcterms.creator | Yang, Kai | |
| dcterms.dateAccepted | 2017-09-20T16:50:06Z | |
| dcterms.dateSubmitted | 2017-09-20T16:50:06Z | |
| dcterms.description | Department of Materials Science and Engineering. | en_US |
| dcterms.extent | 136 pg. | en_US |
| dcterms.format | Application/PDF | en_US |
| dcterms.format | Monograph | |
| dcterms.identifier | http://hdl.handle.net/11401/76364 | |
| dcterms.issued | 2015-08-01 | |
| dcterms.language | en_US | |
| dcterms.provenance | Made available in DSpace on 2017-09-20T16:50:06Z (GMT). No. of bitstreams: 1
Yang_grad.sunysb_0771E_12026.pdf: 4488708 bytes, checksum: 0473246fd60e248497496de407caba49 (MD5)
Previous issue date: 2014 | en |
| dcterms.publisher | The Graduate School, Stony Brook University: Stony Brook, NY. | |
| dcterms.subject | Plastics | |
| dcterms.title | Thermal and Mechanical properties of Graphene/Polymer Nanocomposites | |
| dcterms.type | Dissertation | |
