276 0

Highly Self-Healable Polymeric Blend Synthesized Using Polymeric Glue with Outstanding Mechanical Properties

Title
Highly Self-Healable Polymeric Blend Synthesized Using Polymeric Glue with Outstanding Mechanical Properties
Author
고민재
Keywords
PI-PI STACKING; HEALING MATERIALS; EPOXY; GELS; POLYURETHANE; TEMPERATURE; ELECTRONICS; DESIGN; RUBBER
Issue Date
2020-03
Publisher
AMER CHEMICAL SOC
Citation
MACROMOLECULES, v. 53, no. 6, page. 2279-2286
Abstract
A highly self-healable polymeric system with enhanced mechanical properties is prepared by blending conventional polyurethane (PU) with functional polyimide (PI). PU and PI synthesized in this study are miscible with each other and the thermal stability of the self-healable blend (PUPI) is improved by incorporation of PI into PU. Interestingly, on adding only a small amount of PI to PU, PUPI exhibits higher self-healing efficiency and faster self-healing kinetics. Furthermore, unlike conventional self-healing materials, PUPI also has superior surface and bulk mechanical properties. A model for the mechanism for the improvement of self-healing and mechanical properties is derived by analyzing FT-IR spectra. The outstanding self-healing and mechanical properties are attributed to the unique intermolecular networks resulting from the strong supramolecular interactions between urethane groups in PU and imide groups in PI. As a result, the PI chain acts as a polymeric glue inside the PU matrix of PUPI, which results in significant enhancements in both properties mentioned previously.
URI
https://pubs.acs.org/doi/abs/10.1021/acs.macromol.9b02359https://repository.hanyang.ac.kr/handle/20.500.11754/162067
ISSN
0024-9297; 1520-5835
DOI
10.1021/acs.macromol.9b02359
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE