Abstract
AbstractUtilizing forward recoil spectrometry (FRES), we have determined the segregation isotherm which describes the interfacial excess zi* of diblock copolymers of poly (d8‐styrene‐b‐2‐vinylpyridine) (dPS‐PVP) at the interface between the homopolymers PS and PVP as a function of ϕ∞, the volume fraction of diblock copolymer remaining in the host homopolymer. All the samples were analyzed after annealing at temperatures and times sufficient to achieve equilibrium segregation. The effect of the degree of polymerization of both the diblock copolymers and the host homopolymers on the segregation isotherm is investigated. When the degree of polymerization of the homopolymer is much larger than that of the diblock copolymer, the normalized interfacial excess (zi*/Rg), where Rg is the radius of gyration of an isolated block copolymer chain, is a universal function of that portion of the block copolymer chemical potential due to chain stretching. The existence of such a universal function is predicted by theory and its form is in good agreement with self‐consistent mean field calculations. Using these results, one can predict important aspects of the block copolymer segregation (e.g., the saturation interfacial excess) without recourse to the time‐consuming numerical calculations. © 1994 John Wiley & Sons, Inc.
References
18
Referenced
19
10.1021/ma00196a059
10.1021/ma00008a023
10.1021/ma00044a042
10.1021/ma00188a015
10.1002/macp.1986.021870414
{'key': 'e_1_2_1_7_2', 'first-page': '212', 'volume': '27', 'author': 'Ouhadi R.', 'year': '1986', 'journal-title': 'Polym. Comm.'}
/ Polym. Comm. by Ouhadi R. (1986)10.1016/0032-3861(77)90264-6
10.1063/1.460456
10.1002/masy.19880160103
10.1021/ma00027a037
10.1021/ma00010a045
10.1021/ma00045a024
10.1021/ma00224a005
10.1021/ma00224a006
10.1021/ma00010a017
10.1002/pol.1971.110091006
10.1063/1.1677735
10.1021/ma00203a023
Dates
Type | When |
---|---|
Created | 22 years, 4 months ago (April 17, 2003, 12:01 p.m.) |
Deposited | 1 year, 9 months ago (Oct. 24, 2023, 12:55 p.m.) |
Indexed | 1 year, 1 month ago (July 9, 2024, 6 a.m.) |
Issued | 31 years ago (Aug. 1, 1994) |
Published | 31 years ago (Aug. 1, 1994) |
Published Online | 22 years, 5 months ago (March 11, 2003) |
Published Print | 31 years ago (Aug. 1, 1994) |
@article{Dai_1994, title={Molecular weight dependence of diblock copolymer segregation at a polymer/polymer interface}, volume={32}, ISSN={1099-0488}, url={http://dx.doi.org/10.1002/polb.1994.090321111}, DOI={10.1002/polb.1994.090321111}, number={11}, journal={Journal of Polymer Science Part B: Polymer Physics}, publisher={Wiley}, author={Dai, Kevin H. and Kramer, Edward J.}, year={1994}, month=aug, pages={1943–1950} }