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Fang Y, Ha H, Shanmuganathan K, et al. Polyhedral Oligomeric Silsesquioxane-Containing Thiol-ene Fibers with Tunable Thermal and Mechanical Properties. ACS Appl Mater Interfaces. 2016;8(17):11050-9doi: 10.1021/acsami.6b01692.
Fang, Y., Ha, H., Shanmuganathan, K., & Ellison, C. J. (2016). Polyhedral Oligomeric Silsesquioxane-Containing Thiol-ene Fibers with Tunable Thermal and Mechanical Properties. ACS applied materials & interfaces, 8(17), 11050-9. https://doi.org/10.1021/acsami.6b01692
Fang, Yichen, et al. "Polyhedral Oligomeric Silsesquioxane-Containing Thiol-ene Fibers with Tunable Thermal and Mechanical Properties." ACS applied materials & interfaces vol. 8,17 (2016): 11050-9. doi: https://doi.org/10.1021/acsami.6b01692
Fang Y, Ha H, Shanmuganathan K, Ellison CJ. Polyhedral Oligomeric Silsesquioxane-Containing Thiol-ene Fibers with Tunable Thermal and Mechanical Properties. ACS Appl Mater Interfaces. 2016 May 04;8(17):11050-9. doi: 10.1021/acsami.6b01692. Epub 2016 Apr 19. PMID: 27057758.
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ACS Appl Mater Interfaces. 2016 May 04;8(17):11050-9. doi: 10.1021/acsami.6b01692. Epub 2016 Apr 19.

Polyhedral Oligomeric Silsesquioxane-Containing Thiol-ene Fibers with Tunable Thermal and Mechanical Properties.

ACS applied materials & interfaces

Yichen Fang, Heonjoo Ha, Kadhiravan Shanmuganathan, Christopher J Ellison

Affiliations

  1. McKetta Department of Chemical Engineering, The University of Texas at Austin , Austin, Texas 78712, United States.
  2. Polymer Science and Engineering Division, CSIR-National Chemical Laboratory , Pune, Maharashtra 411008, India.

PMID: 27057758 DOI: 10.1021/acsami.6b01692

Abstract

Polyhedral oligomeric silsesquioxanes (POSS) are versatile inorganic-organic hybrid building blocks that have potential applications as reinforcement nanofillers, thermal stabilizers, and catalyst supports for metal nanoparticles. However, fabrication of fibrous materials with high POSS content has been a challenge because of the aggregation and solubility limits of POSS units. In this paper, we describe a robust and environmentally friendly fabrication approach of inorganic-organic hybrid POSS fibers by integrating UV initiated thiol-ene polymerization and centrifugal fiber spinning. The use of monomeric liquids in this approach not only reduces the consumption of heat energy and solvent, but it also promotes homogeneous mixing of organic and inorganic components that allows integration of large amount of POSS (up to 80 wt %) into the polymer network. The POSS containing thiol-ene fibers exhibited enhanced thermomechanical properties compared to purely organic analogs as revealed by substantial increases in residual weight and a factor of 4 increase in modulus after thermal treatment at 1000 °C. This simple fabrication approach combined with the tunability in fiber properties afforded by tailoring monomer composition make POSS containing thiol-ene fibers attractive candidates for catalyst supports and filtration media, particularly in high-temperature and harsh environments.

Keywords: POSS; cross-linked fiber; enhanced thermomechanical properties; inorganic−organic hybrid fiber; reactive centrifugal spinning; thiol−ene photopolymerization

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