Tailoring interfacial properties of polyethylene oxide/ hexagonal boron nitride nanocomposites via polydopamine

No Thumbnail Available
Authors
Feikert, Paige
Li, Bin
Issue Date
2020
Type
Conference paper
Language
en_US
Keywords
Adhesives , Aliphatic compounds , Boron nitride , Dielectric properties , III-V semiconductors , Nitrides , Polyethylene oxides , Polyethylenes , Thermodynamic stability
Research Projects
Organizational Units
Journal Issue
Alternative Title
Abstract

Boron nitride (BN) nanomaterials, with high chemical inertness and a lack of functional groups are not able to form sufficient interfacial interactions with polymers in polymer nanocomposites. Polydopamine (PDA), an adhesive protein with high catechol and amine content, was found to be an effective non-covalent surfactant for BN. This study investigated the roles of PDA on the interfacial properties of the polyethylene oxide (PEO) /BN nanocomposites via rheological and dielectric analyses. PDA-modified hexagonal boron nitride (SBN) nanoparticles led to strong interfacial interactions between PEO and SBN, ultimately impacting rheological and dielectric properties. PEO/0.5wt%SBN nanocomposites produced moduli comparable to that of PEO/20wt% pristine boron nitride (PBN) nanocomposites. Furthermore, PEO/SBN nanocomposites showed a noticeable concentration dependence of rheological properties that PEO/PBN nanocomposites did not show. PDA-modified interfaces also contributed to slower PEO relaxation characteristics, indicating restricted mobility of PEO chains near the interfaces, which subsequently accounted for the apparent shift of interfacial polarization to lower frequencies in PEO/SBN nanocomposites, especially at high SBN concentration and high temperature, showing improved thermal stability of PDA-modified interfaces.

Description
Click on the URL link to access this conference paper on the publisher’s website (may not be free.)
Citation
Feikert, P., & Li, B. (2020). Tailoring interfacial properties of polyethylene oxide/ hexagonal boron nitride nanocomposites via polydopamine. Paper presented at the Annual Technical Conference - ANTEC, Conference Proceedings, , 2 1102-1106.
Publisher
Society of Plastics Engineers
License
Journal
Volume
Issue
PubMed ID
DOI
ISSN
EISSN