TY - JOUR
T1 - Gaussian- to stretched-coil transition in block copolymer melts
AU - Almdal, Kristoffer
AU - Rosedale, Jeffrey H.
AU - Bates, Frank S.
AU - Wignall, George D.
AU - Fredrickson, Glenn H.
PY - 1990/1/1
Y1 - 1990/1/1
N2 - Two scaling regimes, DN with =0.49 0.02 and 0.80 0.04, have been identified in a model set of nearly symmetric diblock copolymer melts, where D and N are the system peridocity and degree of polymerization, respectively. The crossover from =0.49 to 0.80 is identified as the Gaussian to stretched-coil transition (GST). Contrary to current theory, the GST occurs well below the order-disorder transition (ODT), NGST=0.57NODT. We associate =0.80 with the crossover from weak-segregation (=1/2) to strong-segregation (=2/3) behavior.
AB - Two scaling regimes, DN with =0.49 0.02 and 0.80 0.04, have been identified in a model set of nearly symmetric diblock copolymer melts, where D and N are the system peridocity and degree of polymerization, respectively. The crossover from =0.49 to 0.80 is identified as the Gaussian to stretched-coil transition (GST). Contrary to current theory, the GST occurs well below the order-disorder transition (ODT), NGST=0.57NODT. We associate =0.80 with the crossover from weak-segregation (=1/2) to strong-segregation (=2/3) behavior.
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U2 - 10.1103/PhysRevLett.65.1112
DO - 10.1103/PhysRevLett.65.1112
M3 - Article
AN - SCOPUS:0642353070
SN - 0031-9007
VL - 65
SP - 1112
EP - 1115
JO - Physical Review Letters
JF - Physical Review Letters
IS - 9
ER -