Autonomic healing of PMMA via microencapsulated solvent

Asha Dee N. Celestine; Nancy R. Sottos; Scott R. White

doi:10.1016/j.polymer.2015.03.072

Autonomic healing of PMMA via microencapsulated solvent

Asha Dee N. Celestine, Nancy R. Sottos, Scott R. White

Research output: Contribution to journal › Article › peer-review

Abstract

Fully autonomous, room temperature self-healing in PMMA is achieved for the first time through the use of microcapsules containing a solvent. Linear PMMA is embedded with microcapsules (ca. 300 μm) containing a liquid anisole solvent core and a small amount of linear PMMA polymer for healing of crack damage. Specimens containing a range of concentrations of microcapsules were fracture tested and then allowed to heal for 1-7 days at ambient conditions. The healing efficiency of the material is evaluated based on the recovery of fracture toughness and is shown to be dependent on both healing time and microcapsule concentration. A maximum healing efficiency of 89% is obtained for specimens containing 5 wt% solvent microcapsules after 3 days of healing.

Original language	English (US)
Pages (from-to)	241-248
Number of pages	8
Journal	Polymer
Volume	69
DOIs	https://doi.org/10.1016/j.polymer.2015.03.072
State	Published - Jun 26 2015

Keywords

PMMA
Self-healing
Solvent microcapsules

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Materials Chemistry

Online availability

10.1016/j.polymer.2015.03.072

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abstract = "Fully autonomous, room temperature self-healing in PMMA is achieved for the first time through the use of microcapsules containing a solvent. Linear PMMA is embedded with microcapsules (ca. 300 μm) containing a liquid anisole solvent core and a small amount of linear PMMA polymer for healing of crack damage. Specimens containing a range of concentrations of microcapsules were fracture tested and then allowed to heal for 1-7 days at ambient conditions. The healing efficiency of the material is evaluated based on the recovery of fracture toughness and is shown to be dependent on both healing time and microcapsule concentration. A maximum healing efficiency of 89% is obtained for specimens containing 5 wt% solvent microcapsules after 3 days of healing.",

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AU - Celestine, Asha Dee N.

AU - Sottos, Nancy R.

AU - White, Scott R.

PY - 2015/6/26

Y1 - 2015/6/26

N2 - Fully autonomous, room temperature self-healing in PMMA is achieved for the first time through the use of microcapsules containing a solvent. Linear PMMA is embedded with microcapsules (ca. 300 μm) containing a liquid anisole solvent core and a small amount of linear PMMA polymer for healing of crack damage. Specimens containing a range of concentrations of microcapsules were fracture tested and then allowed to heal for 1-7 days at ambient conditions. The healing efficiency of the material is evaluated based on the recovery of fracture toughness and is shown to be dependent on both healing time and microcapsule concentration. A maximum healing efficiency of 89% is obtained for specimens containing 5 wt% solvent microcapsules after 3 days of healing.

AB - Fully autonomous, room temperature self-healing in PMMA is achieved for the first time through the use of microcapsules containing a solvent. Linear PMMA is embedded with microcapsules (ca. 300 μm) containing a liquid anisole solvent core and a small amount of linear PMMA polymer for healing of crack damage. Specimens containing a range of concentrations of microcapsules were fracture tested and then allowed to heal for 1-7 days at ambient conditions. The healing efficiency of the material is evaluated based on the recovery of fracture toughness and is shown to be dependent on both healing time and microcapsule concentration. A maximum healing efficiency of 89% is obtained for specimens containing 5 wt% solvent microcapsules after 3 days of healing.

KW - PMMA

KW - Self-healing

KW - Solvent microcapsules

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Autonomic healing of PMMA via microencapsulated solvent

Abstract

Keywords

ASJC Scopus subject areas

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