| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 가을 (10/06 ~ 10/08, 대구컨벤션센터(EXCO)) |
| 권호 |
40권 2호 |
| 발표분야 |
고분자구조 및 물성 |
| 제목 |
Piezoelectric Studies on Electrospun Poly(L-lactic acid)/Poly(D-lactic acid) Stereocomplex Nanowebs |
| 초록 |
Our research group has extensively studied the shear-piezoelectricity of electrospun poly(L-lactic acid) (PLLA), and have observed almost similar piezoelectric output voltage to that of commercially used poly(vinylidene fluoride) under applied dynamic pressure. In the present study, relationship between molecular structure and piezoelectricity of nanoweb of PLLA/PDLA stereocomplex crystals was investigated. FTIR, XRD and DSC analyses of the stereocomplex were carried out to understand the changes in chain and dipole conformations as a function of annealing temperature (80 and 120 oC). Though PLLA and PDLA are optical isomers, their stereocomplex crystals generated piezoelectric output signals along the same direction under applied dynamic pressure. This behavior may be attributed to the orientation of the C=O dipoles in a deformed helical structure during the electrospinning process. Acknowledgement: This work was supported by MOTIE (Grant No. 10047976 & 10044953). |
| 저자 |
김갑진, Arun Anand Prabu, 송은혜
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| 소속 |
경희대 |
| 키워드 |
PLA; stereocomplex; nanoweb; piezoelectricity
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| E-Mail |
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