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RISS 인기검색어
- 검색키워드
- 저자 : Mehdi Farhoodi (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
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Influence of TiO<sub>2</sub> Nanoparticle Filler on the Properties of PET and PLA Nanocomposites
Farhoodi, Mehdi,Dadashi, Saeed,Mousavi, Seyed Mohammad Ali,Sotudeh-Gharebagh, Rahmat,Emam-Djomeh, Zahra,Oromiehie, Abdolrasul,Hemmati, Farkhondeh The Polymer Society of Korea 2012 폴리머 Vol.36 No.6
Two types of polymers were tested in this study; poly(ethylene terephthalate) (PET) as a synthetic example and poly(lactic acid) (PLA) as a natural polymer. DSC analyses showed that the use of nanofiller increased the degree of crystallinity ($X_c$) of both PET and PLA polymers, but the effect was more noticeable on PET nanocomposites. The crystallization of PLA and PET nanocomposites occurred at higher temperatures in comparison to neat polymers. According to dynamic mechanical-thermal analysis (DMTA), the damping factor of PET/$TiO_2$ nanoparticles decreased compared to the neat matrix, but for PLA nanocomposites the opposite trend was observed. Results of the mechanical test showed that for both PET and PLA nanocomposites, the most successful toughening effect was observed at 3 wt% loading of $TiO_2$ nanoparticles. SEM micrographs revealed uniform distribution of $TiO_2$ nanoparticles at 1 and 3 wt% loading levels. The results of WAXD spectra explained that the polymorphs of PLA and PET was not affected by $TiO_2$ nanoparticles. UV-visible spectra showed that $TiO_2$ nanocomposite films had high ultraviolet shielding compared to neat polymer, but there was significant reduction in transparency.
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이산화티탄 나노입자 필러가 PET와 PLA 나노복합체의 특성에 미치는 영향
Seyed Mohammad Ali Mousavi,Mehdi Farhoodi,Saeed Dadashi,Rahmat Sotudeh Gharebagh,Zahra Emam Djomeh,Abdolrasul Oromiehie,Farkhondeh Hemmati 한국고분자학회 2012 폴리머 Vol.36 No.6
Two types of polymers were tested in this study; poly(ethylene terephthalate) (PET) as a synthetic example and poly(lactic acid) (PLA) as a natural polymer. DSC analyses showed that the use of nanofiller increased the degree of crystallinity (Xc) of both PET and PLA polymers, but the effect was more noticeable on PET nanocomposites. The crystallization of PLA and PET nanocomposites occurred at higher temperatures in comparison to neat polymers. According to dynamic mechanical-thermal analysis (DMTA), the damping factor of PET/TiO2 nanoparticles decreased compared to the neat matrix, but for PLA nanocomposites the opposite trend was observed. Results of the mechanical test showed that for both PET and PLA nanocomposites, the most successful toughening effect was observed at 3 wt% loading of TiO2 nanoparticles. SEM micrographs revealed uniform distribution of TiO2 nanoparticles at 1 and 3 wt% loading levels. The results of WAXD spectra explained that the polymorphs of PLA and PET was not affected by TiO2 nanoparticles. UV-visible spectra showed that TiO2 nanocomposite films had high ultraviolet shielding compared to neat polymer, but there was significant reduction in transparency.
ScienceON
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