Abstract
Mechanical, morphological and rheological properties of polycarbonate (PC) and poly (lactic acid) (PLA) blends with compatibilizers have been investigated. Three types of compatibilizers were used: poly(styrene-g-acrylonitrile)-maleic anhydride (SAN-g-MAH), poly(ethylene-co-octene) rubber-maleic anhydride (EOR-MAH) and poly(ethylene-co-glycidyl methacrylate) (EGMA). The maximum value of the mechanical properties such as impact and tensile strengths of the PC/PLA (70/30, wt%) blend before or after hydrolysis was observed when the SAN-g-MAH was used as a compatibilizer at the amount of 5 phr. From the interfacial tension between PC and PLA which was determined from the weighted relaxation spectra using Palierne emulsion model, minimum value of interfacial tension (0.08 mN/m) was observed when the SAN-g-MAH (5 phr) was used. From the morphological studies of the PC/PLA (70/30) blends, the PLA droplet size showed minimum (0.19 μm) at the 5.0 phr SAN-g-MAH. From the results of mechanical, morphological and rheological properties of the PC/PLA (70/30) blend, it is suggested that the SAN-g-MAH is the most effective compatibilizer to improve the mechanical strength of the PC/PLA (70/30) blends among the compatibilizers used in this study, especially at the amount of 5 phr.
| Original language | English |
|---|---|
| Pages (from-to) | 553-560 |
| Number of pages | 8 |
| Journal | Polymer Degradation and Stability |
| Volume | 96 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2011 Apr |
Bibliographical note
Funding Information:This research was supported by a grant (code BB3-101) from Carbon Dioxide Reduction & Sequestration Research Center , one of the 21st Century Frontier Programs funded by the Ministry of Education, Science and Technology of Korean government .
Keywords
- Compatibility
- Poly (lactic acid)
- Polycarbonate
- Polymer blends
- Rheology
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanics of Materials
- Polymers and Plastics
- Materials Chemistry