Alignment frustration in block copolymer films with block copolymer grafted TiO2 nanoparticles under soft-shear cold zone annealing
Abstract
Abstract Block copolymers (BCPs) have received significant attention as promising candidates for sequestering nanoparticles and fabrication of aligned nanostructures with optimal optical or electrical properties. We investigate the influence of static and dynamic thermal field on the alignment of polystyrene‐ block ‐poly(methyl methacrylate) (PS‐ b ‐PMMA) BCP morphology with the loading of novel poly(methyl methacrylate‐ block ‐Polystyrene) (PMMA‐ b ‐PS)‐grafted‐TiO 2 nanoparticles (BCP‐g‐TiO 2 ). Observation of characteristics IR peaks for PMMA and PS in BCP‐g‐TiO 2 nanoparticles and Transmission Electron Microscopy (TEM) results of the outer coating of core nanoparticle, validate the grafting to approach in synthesizing BCP‐g‐TiO 2 . Here we report that under the sharp dynamic thermal field, at low loading of BCP‐g‐TiO 2 , there is good dispersion of nanoparticles in unidirectionally aligned BCP matrix in film interior probed by GISAXS, while, at high nanoparticle loading (~10 wt%), there is local frustration in the unidirectional alignment of the BCP matrix due to aggregation of BCP‐g‐TiO 2 nanoparticles. However, Grazing incidence small angle X‐ray scattering (GISAXS) shows clearly that the BCP films remain largely locally ordered at the domain scale, despite these large perturbations to long‐range ordering even at high loading level, while bringing in new TiO 2more »
- Authors:
-
[5];
[7];
- Univ. of Akron, OH (United States); Intel Corp., Hillsboro, OR (United States)
- Howard Univ., Washington, DC (United States); U.S. Pharmacopeia, Rockville, MD (United States)
- Univ. of Houston, TX (United States)
- Jackson State Univ., Jackson, MS (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- King Saud Univ., Riyadh (Saudi Arabia)
- Howard Univ., Washington, DC (United States)
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); US Air Force Office of Scientific Research (AFOSR)
- OSTI Identifier:
- 1771131
- Alternate Identifier(s):
- OSTI ID: 1804825
- Report Number(s):
- BNL-221134-2021-JAAM
Journal ID: ISSN 1042-7147
- Grant/Contract Number:
- SC0012704; AC02-06CH11357; DMR1901127; FA9550-12-1-0306; DE‐AC02‐06CH11357; DE‐SC0012704
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Polymers for Advanced Technologies
- Additional Journal Information:
- Journal Volume: 32; Journal Issue: 5; Journal ID: ISSN 1042-7147
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 77 NANOSCIENCE AND NANOTECHNOLOGY; BCP-g-TiO2 nanoparticles; unidirectional alignment; dynamic thermal annealing; PMMA-b-PS
Citation Formats
Samant, Saumil, Hailu, Shimelis, Singh, Maninderjeet, Pradhan, Nihar, Yager, Kevin, Al‐Enizi, Abdullah M., Raghavan, Dharmaraj, and Karim, Alamgir. Alignment frustration in block copolymer films with block copolymer grafted TiO2 nanoparticles under soft-shear cold zone annealing. United States: N. p., 2021.
Web. doi:10.1002/pat.5234.
Samant, Saumil, Hailu, Shimelis, Singh, Maninderjeet, Pradhan, Nihar, Yager, Kevin, Al‐Enizi, Abdullah M., Raghavan, Dharmaraj, & Karim, Alamgir. Alignment frustration in block copolymer films with block copolymer grafted TiO2 nanoparticles under soft-shear cold zone annealing. United States. https://doi.org/10.1002/pat.5234
Samant, Saumil, Hailu, Shimelis, Singh, Maninderjeet, Pradhan, Nihar, Yager, Kevin, Al‐Enizi, Abdullah M., Raghavan, Dharmaraj, and Karim, Alamgir. Mon .
"Alignment frustration in block copolymer films with block copolymer grafted TiO2 nanoparticles under soft-shear cold zone annealing". United States. https://doi.org/10.1002/pat.5234. https://www.osti.gov/servlets/purl/1771131.
@article{osti_1771131,
title = {Alignment frustration in block copolymer films with block copolymer grafted TiO2 nanoparticles under soft-shear cold zone annealing},
author = {Samant, Saumil and Hailu, Shimelis and Singh, Maninderjeet and Pradhan, Nihar and Yager, Kevin and Al‐Enizi, Abdullah M. and Raghavan, Dharmaraj and Karim, Alamgir},
abstractNote = {Abstract Block copolymers (BCPs) have received significant attention as promising candidates for sequestering nanoparticles and fabrication of aligned nanostructures with optimal optical or electrical properties. We investigate the influence of static and dynamic thermal field on the alignment of polystyrene‐ block ‐poly(methyl methacrylate) (PS‐ b ‐PMMA) BCP morphology with the loading of novel poly(methyl methacrylate‐ block ‐Polystyrene) (PMMA‐ b ‐PS)‐grafted‐TiO 2 nanoparticles (BCP‐g‐TiO 2 ). Observation of characteristics IR peaks for PMMA and PS in BCP‐g‐TiO 2 nanoparticles and Transmission Electron Microscopy (TEM) results of the outer coating of core nanoparticle, validate the grafting to approach in synthesizing BCP‐g‐TiO 2 . Here we report that under the sharp dynamic thermal field, at low loading of BCP‐g‐TiO 2 , there is good dispersion of nanoparticles in unidirectionally aligned BCP matrix in film interior probed by GISAXS, while, at high nanoparticle loading (~10 wt%), there is local frustration in the unidirectional alignment of the BCP matrix due to aggregation of BCP‐g‐TiO 2 nanoparticles. However, Grazing incidence small angle X‐ray scattering (GISAXS) shows clearly that the BCP films remain largely locally ordered at the domain scale, despite these large perturbations to long‐range ordering even at high loading level, while bringing in new TiO 2 functionality to the BCP films, such as UVO absorptivity or biofouling prevention, important to potential new applications of such membranes.},
doi = {10.1002/pat.5234},
journal = {Polymers for Advanced Technologies},
number = 5,
volume = 32,
place = {United States},
year = {Mon Feb 08 00:00:00 EST 2021},
month = {Mon Feb 08 00:00:00 EST 2021}
}
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