Onset of tethered chain overcrowding. Academic Article uri icon

abstract

  • We proposed an approach to precisely control the density of tethered chains on solid substrates using PEO-b-PS and PLLA-b-PS. As the crystallization temperature Tx increased, the PEO or PLLA lamellar crystal thickness d(L) increased as well as the reduced tethering density sigma; of the PS chains. The onset of tethered PS chains overcrowding in solution occurs at sigma(*) approximately 3.7-3.8 as evidenced by an abrupt change in the slope between (d(L))(-1) and Tx. This results from the extra surface free energy created by the tethered chain that starts to affect the growth barrier of the crystalline blocks.

published proceedings

  • Phys Rev Lett

author list (cited authors)

  • Chen, W. Y., Zheng, J. X., Cheng, S., Li, C. Y., Huang, P., Zhu, L., ... Thomas, E. L.

citation count

  • 116

complete list of authors

  • Chen, William Y||Zheng, Joseph X||Cheng, Stephen ZD||Li, Christopher Y||Huang, Ping||Zhu, Lei||Xiong, Huiming||Ge, Qing||Guo, Ya||Quirk, Rodric P||Lotz, Bernard||Deng, Lingfeng||Wu, Chi||Thomas, Edwin L

publication date

  • July 2004