Micromechanical assessment of PMMA microcapsules containing epoxy and mercaptan as self-healing agents

Fatemeh Ahangaran; Mehran Hayaty; Amir H. Navarchian; Francesco Picchioni

doi:10.1016/j.polymertesting.2017.10.014

Micromechanical assessment of PMMA microcapsules containing epoxy and mercaptan as self-healing agents

Fatemeh Ahangaran
, Mehran Hayaty^*
, Amir H. Navarchian
, Francesco Picchioni

^*Corresponding author for this work

Product Technology

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

50 Citations (Scopus)

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Abstract

Mechanical properties of microcapsule shell have great influence on microcapsule suitability as a mechanical trigger in a self-healing composite. The elastic modulus and hardness of polymethyl methacrylate (PMMA) microcapsules containing epoxy prepolymer (EC 157) and pentaerythritol tetrakis (3-mercaptopropionate) (PETMP) as healing agents were investigated using nanoindentation technique. The influence of the PMMA average molecular weight (M-W), the kind of core material, and the mechanical mixing rate on the mechanical properties of the microcapsule shell were studied using the Taguchi experimental design approach. The results indicated that the most important factors which affect the elastic modulus and the hardness of microcapsules shell are the M-W of PMMA and the kind of core material. The average elastic modulus of PMMA shell of epoxy and mercaptan-loaded microcapsules was found between 2.386 and 3.495 GPa. The hardness of PMMA shell of healing agent microcapsules was obtained in the range of 0.064-0.219 GPa. This constitutes essential knowledge in order to design capsules with tailored properties for self-healing materials.

Original language	English
Pages (from-to)	330-336
Number of pages	7
Journal	Polymer testing
Volume	64
DOIs	https://doi.org/10.1016/j.polymertesting.2017.10.014
Publication status	Published - Dec-2017

Keywords

Elastic modulus
Hardness
Healing agent
Nanoindentation
Microcapsule
POLYELECTROLYTE MULTILAYER MICROCAPSULES
MECHANICAL-PROPERTIES
MOLECULAR-WEIGHT
ELASTIC PROPERTIES
CURING AGENT
LIVING CELLS
COMPOSITES
CAPSULES
POLYMER
SHELL

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Micromechanical assessment of PMMA microcapsules containing epoxy and mercaptan as self-healing agentsFinal publisher's version, 704 KBLicence: Taverne

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@article{2e7b6db06d4043b6a6ba41439c6bf144,

title = "Micromechanical assessment of PMMA microcapsules containing epoxy and mercaptan as self-healing agents",

abstract = "Mechanical properties of microcapsule shell have great influence on microcapsule suitability as a mechanical trigger in a self-healing composite. The elastic modulus and hardness of polymethyl methacrylate (PMMA) microcapsules containing epoxy prepolymer (EC 157) and pentaerythritol tetrakis (3-mercaptopropionate) (PETMP) as healing agents were investigated using nanoindentation technique. The influence of the PMMA average molecular weight (M-W), the kind of core material, and the mechanical mixing rate on the mechanical properties of the microcapsule shell were studied using the Taguchi experimental design approach. The results indicated that the most important factors which affect the elastic modulus and the hardness of microcapsules shell are the M-W of PMMA and the kind of core material. The average elastic modulus of PMMA shell of epoxy and mercaptan-loaded microcapsules was found between 2.386 and 3.495 GPa. The hardness of PMMA shell of healing agent microcapsules was obtained in the range of 0.064-0.219 GPa. This constitutes essential knowledge in order to design capsules with tailored properties for self-healing materials.",

keywords = "Elastic modulus, Hardness, Healing agent, Nanoindentation, Microcapsule, POLYELECTROLYTE MULTILAYER MICROCAPSULES, MECHANICAL-PROPERTIES, MOLECULAR-WEIGHT, ELASTIC PROPERTIES, CURING AGENT, LIVING CELLS, COMPOSITES, CAPSULES, POLYMER, SHELL",

author = "Fatemeh Ahangaran and Mehran Hayaty and Navarchian, \{Amir H.\} and Francesco Picchioni",

year = "2017",

month = dec,

doi = "10.1016/j.polymertesting.2017.10.014",

language = "English",

volume = "64",

pages = "330--336",

journal = "Polymer testing",

issn = "0142-9418",

publisher = "ELSEVIER SCI LTD",

}

TY - JOUR

T1 - Micromechanical assessment of PMMA microcapsules containing epoxy and mercaptan as self-healing agents

AU - Ahangaran, Fatemeh

AU - Hayaty, Mehran

AU - Navarchian, Amir H.

AU - Picchioni, Francesco

PY - 2017/12

Y1 - 2017/12

N2 - Mechanical properties of microcapsule shell have great influence on microcapsule suitability as a mechanical trigger in a self-healing composite. The elastic modulus and hardness of polymethyl methacrylate (PMMA) microcapsules containing epoxy prepolymer (EC 157) and pentaerythritol tetrakis (3-mercaptopropionate) (PETMP) as healing agents were investigated using nanoindentation technique. The influence of the PMMA average molecular weight (M-W), the kind of core material, and the mechanical mixing rate on the mechanical properties of the microcapsule shell were studied using the Taguchi experimental design approach. The results indicated that the most important factors which affect the elastic modulus and the hardness of microcapsules shell are the M-W of PMMA and the kind of core material. The average elastic modulus of PMMA shell of epoxy and mercaptan-loaded microcapsules was found between 2.386 and 3.495 GPa. The hardness of PMMA shell of healing agent microcapsules was obtained in the range of 0.064-0.219 GPa. This constitutes essential knowledge in order to design capsules with tailored properties for self-healing materials.

AB - Mechanical properties of microcapsule shell have great influence on microcapsule suitability as a mechanical trigger in a self-healing composite. The elastic modulus and hardness of polymethyl methacrylate (PMMA) microcapsules containing epoxy prepolymer (EC 157) and pentaerythritol tetrakis (3-mercaptopropionate) (PETMP) as healing agents were investigated using nanoindentation technique. The influence of the PMMA average molecular weight (M-W), the kind of core material, and the mechanical mixing rate on the mechanical properties of the microcapsule shell were studied using the Taguchi experimental design approach. The results indicated that the most important factors which affect the elastic modulus and the hardness of microcapsules shell are the M-W of PMMA and the kind of core material. The average elastic modulus of PMMA shell of epoxy and mercaptan-loaded microcapsules was found between 2.386 and 3.495 GPa. The hardness of PMMA shell of healing agent microcapsules was obtained in the range of 0.064-0.219 GPa. This constitutes essential knowledge in order to design capsules with tailored properties for self-healing materials.

KW - Elastic modulus

KW - Hardness

KW - Healing agent

KW - Nanoindentation

KW - Microcapsule

KW - POLYELECTROLYTE MULTILAYER MICROCAPSULES

KW - MECHANICAL-PROPERTIES

KW - MOLECULAR-WEIGHT

KW - ELASTIC PROPERTIES

KW - CURING AGENT

KW - LIVING CELLS

KW - COMPOSITES

KW - CAPSULES

KW - POLYMER

KW - SHELL

U2 - 10.1016/j.polymertesting.2017.10.014

DO - 10.1016/j.polymertesting.2017.10.014

M3 - Article

SN - 0142-9418

VL - 64

SP - 330

EP - 336

JO - Polymer testing

JF - Polymer testing

ER -

Micromechanical assessment of PMMA microcapsules containing epoxy and mercaptan as self-healing agents

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Keywords

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