Field - Driven Translocation of Regular Block Copolymers through a Selective Liquid - Liquid Interface

Details Field - Driven Translocation of Regular Block Copolymers through a Selective Liquid - Liquid Interface Field - Driven Translocation of Regular Block Copolymers through a Selective Liquid - Liquid Interface

2006-10-16

arxiv.org/abs/cond-mat/0610432v1

Macromolecules 39, 7115 - 7124 (2006)

Physics

Condensed Matter

Soft Condensed Matter

20 pages, 10 figures

Scientific paper

10.1021/ma060920n

We propose a simple scaling theory describing the variation of the mean first passage time (MFPT) $\tau(N,M)$ of a regular block copolymer of chain length $N$ and block size $M$ which is dragged through a selective liquid-liquid interface by an external field $B$. The theory predicts a non-Arrhenian $\tau$ vs. $B$ relationship which depends strongly on the size of the blocks, $M$, and rather weakly on the total polymer length, $N$. The overall behavior is strongly influenced by the degree of selectivity between the two solvents $\chi$. The variation of $\tau(N,M)$ with $N$ and $M$ in the regimes of weak and strong selectivity of the interface is also studied by means of computer simulations using a dynamic Monte Carlo coarse-grained model. Good qualitative agreement with theoretical predictions is found. The MFPT distribution is found to be well described by a $\Gamma$ - distribution. Transition dynamics of ring- and telechelic polymers is also examined and compared to that of the linear chains. The strong sensitivity of the ``capture'' time $\tau(N,M)$ with respect to block length $M$ suggests a possible application as a new type of chromatography designed to separate and purify complex mixtures with different block sizes of the individual macromolecules.

Affiliated with

Also associated with

No associations

Rating

Field - Driven Translocation of Regular Block Copolymers through a Selective Liquid - Liquid Interface does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Field - Driven Translocation of Regular Block Copolymers through a Selective Liquid - Liquid Interface, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Field - Driven Translocation of Regular Block Copolymers through a Selective Liquid - Liquid Interface will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-244187