Compatibilizing effects for improving mechanical properties of biodegradable poly (lactic acid) and polycarbonate blends
- Authors
- Lee, Jae Bok; Lee, Yun Kyun; Choi, Gi Dae; Na, Sang Wook; Park, Tae Sung; Kim, Woo Nyon
- Issue Date
- 4월-2011
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Polymer blends; Poly (lactic acid); Polycarbonate; Compatibility; Rheology
- Citation
- POLYMER DEGRADATION AND STABILITY, v.96, no.4, pp.553 - 560
- Indexed
- SCIE
SCOPUS
- Journal Title
- POLYMER DEGRADATION AND STABILITY
- Volume
- 96
- Number
- 4
- Start Page
- 553
- End Page
- 560
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/112809
- DOI
- 10.1016/j.polymdegradstab.2010.12.019
- ISSN
- 0141-3910
- Abstract
- Mechanical, morphological and rheological properties of polycarbonate (PC) and poly (lactic acid) (PIA) 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 PIA 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 PIA droplet size showed minimum (0.19 mu m) 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. (C) 2011 Elsevier Ltd. All rights reserved.
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