Preparation of various porous polymer nanofibers

POLY 114

Hyun Jeong Jeon, polygirl@inhaian.net1, Eun Hwan Jeong, clioman@nate.com1, Ji Hye Hong, jhhong@inhaian.net1, Won Keun Son, skson@cnu.ac.kr2, Won Ho Park, parkwh@cnu.ac.kr3, Ji Ho Youk, youk@inha.ac.kr1, and W-J Jin1. (1) Department of Advanced Fiber Engineering, Inha University, 253 Yonghyun-dong, Nam-gu, Incheon, 402-751, South Korea, (2) Research Institute of Advanced Materials, Chungnam National University, Daejeon, 305-764, South Korea, (3) Department of Textile Engineering, Chungnam National University, Daejeon, 305-764, South Korea
In this study, porous polymer nanofibers were prepared by electrospinning of polyetherimide (PEI)/poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), poly(glycolic acid) (PGA)/poly(L-lactic acid) (PLA), poly(vinyl cinnamate) (PVCi)/PHBV blend solutions. These blend pairs are all immiscible and the phase separation proceeded during the electrospinning process. For PEI/PHBV blend nanofibers, the PHBV was selectively removed by thermal degradation at 210 °C. The PEI/PHBV(75/25) and PEI/PHBV(50/50) nanofibers exhibited highly porous surfaces after thermal degradation of the PHBV at 210 °C. For PGA/PLA and PVCi/PHBV blend nanofibers, PLA was selectively extracted with chloroform and PHBV was selectively extracted with chloroform after photo-crosslinking of the PVCi, respectively. The PGA / PLA blend nanofibers had a co-continuous phase morphology and that the pores in the resulting PGA nanofibers were three-dimensionally interconnected. In cases of the PVCi/PHBV(75/25) and PVCi/PHBV(50/50) nanofibers, pores in the remaining PVCi nanofibers were enlarged due to the extraction of the PHBV.
 

General Papers: Polymers in Nanotechnology
6:00 PM-8:00 PM, Sunday, 10 September 2006 Moscone Center -- Hall D, Poster

Division of Polymer Chemistry

The 232nd ACS National Meeting, San Francisco, CA, September 10-14, 2006