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Polymer Adsorption and Transport into Nanopores

Polymer Adsorption and Transport into Nanopores. ( Grant No .: DMR-0449736, Program director : Dr. Andrew J. Lovinger.). Research. G = surface excess = wt. of adsorbed polymers per unit area. Understanding the size interplay between polymers and pores. When Rg > Rp,.

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Polymer Adsorption and Transport into Nanopores

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  1. Polymer Adsorption and Transport into Nanopores (Grant No.: DMR-0449736, Program director: Dr. Andrew J. Lovinger.) Research G = surface excess = wt. of adsorbed polymers per unit area • Understanding the size interplay between polymers and pores When Rg > Rp, • When Rg < Rp, Gpore ~ G (Rg) ~ Gflat • Rg > Rp, Gpore ~ G (Rp). • When polymers are larger than pores, the “true” Gpore depends not on polymer size, but on pore size. PS in cyclohexane • Applications of polymer nanopore adsorption for polymer separation When polymers are larger than pores, Polymer separation in polymer nanoparticle composites Li et al.Macromolecules2006, 39, 3175-3183. • PS adsorption in cyclohexane • HF treatment & sonification Block copolymer fractionation based on chemical composition differences SEM of a PS shell layer remaining after HF etching Park et al.Macromolecules2006, 39, 315-318. Chang Ryu, Rensselaer Polytechnic Institute, Troy, NY

  2. Polymer Adsorption and Transport into Nanopores (Grant No.: DMR-0449736, Program director: Dr. Andrew J. Lovinger.) Education Outreach (1)Two graduate students are making a steady progress toward their Ph.D. degrees. (2) Undergraduate research by 4 students is supported beyond the original budgeted plan by attracting RPI internal scholarship funding and obtaining REU supplement-CAREER support. (3) Graduate-level course titled “Polymer Separation and HPLC (2 credit)” was offered to 8 graduate and 2 undergraduate students at RPI in Spring, 2006. • High School Outreach Program: • The PI will continue to collaborate with HS teachers as a Program Coordinator of “Bringing Nanotechnology to the Classroom”, HS Outreach Program in NSEC at RPI, since 2003 (Picture below-left: July, 2005). The PI also gave a seminar on nanotechnology at “Albany Academy for Girls” in Albany, NY (May, 2006) in an effort to expand the HS outreach program • Two Ph.D. Students • Won Kim (4th year), Chansu Kim (4th year) • Four undergraduate students • Felicia Tsai (junior, RPI)† • Samantha G. Gladstone (freshman, RPI) • Nan Chen (freshman, RPI) • Jeol Batson (Junior, Morehouse, GA)‡ (2) The PI hosted UG students from Williams College (UG Only institution) for one-day special lecture/laboratory on polymer HPLC at RPI (Picture above-right: April, 2006) (3) The PI and his students continued to develop the educational web-based resource on polymer materials -“Virtual Polymer Laboratory” (http://block.chem.rpi.edu/html/E_Outreach) †The winner of Janz award at RPI for the summer research support at RPI, based on her previous work and proposed work before the summer of 2006. ‡ REU supplement-CAREER support (DMR-636168) for the summer of 2006 Chang Ryu, Rensselaer Polytechnic Institute, Troy, NY

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