Abstract
This work is focused on the mass transport of methanol and the methanol-assisted crack healing in poly(methyl methacrylate) (PMMA)-graphene composites at different temperatures. The effect of the fraction of graphene on the mass transport of methanol and the methanol-assisted crack healing is also studied. The experimental results reveal that adding graphene to the PMMA matrix increases the resistance to the migration/diffusion of methanol and polymer chains in the PMMA matrix, and the absorption of methanol follows anomalous diffusion. The activation energies for the case I transport and case II transport in the PMMA-graphene composites are relatively independent of the fraction of graphene, and are larger than the corresponding ones in pure PMMA. Increasing the healing time and healing temperature allows for more polymer chains to migrate/diffuse across fractured surfaces, leading to the increase in the fracture strength of the crack-healed PMMA-graphene composites.
| Original language | English |
|---|---|
| Pages (from-to) | 7526-7533 |
| Number of pages | 8 |
| Journal | Soft Matter |
| Volume | 14 |
| Issue number | 36 |
| DOIs | |
| State | Published - 2018 |
Bibliographical note
Publisher Copyright:© 2018 The Royal Society of Chemistry.
Funding
This work was financially supported by the Ministry of Science and Technology, Taiwan through the grant MOST107-2221-E-007-007-MY2. FY is grateful for the support by the NSF through the grant CMMI-1634540, monitored by Dr Khershed Cooper.
| Funders | Funder number |
|---|---|
| National Science Foundation (NSF) | CMMI-1634540, 1634540 |
| Norsk Sykepleierforbund | |
| Ministry of Science and Technology, Taiwan | MOST107-2221-E-007-007-MY2 |
ASJC Scopus subject areas
- General Chemistry
- Condensed Matter Physics