@Article{JRM.2017.634114,
AUTHOR = {Bernal Sibaja, Camila Pereira Matheus, Ricardo Ballestero Mendez,Ramsis Farag, J. R. Vega-Baudrit, Maria L. Auad},
TITLE = {Synthesis and Characterization of Interpenetrating Polymer Networks (IPNs) from Acrylated Soybean Oil a-Resorcylic Acid: Part 2. Thermo-Mechanical Properties and Linear Fracture Mechanics},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {5},
YEAR = {2017},
NUMBER = {3-4},
PAGES = {241--250},
URL = {http://www.techscience.com/jrm/v5n3-4/28790},
ISSN = {2164-6341},
ABSTRACT = {The thermo-mechanical properties and linear fracture mechanics of acrylated soybean oil and the triglycidylated ether of α-resorcylic acid interpenetrated networks as a function of their weight composition are the focus of Part 2 of this article. Thermo-mechanical characterization showed that the obtained materials behave as thermoset amorphous polymers, and that both the modulus and glass transition are extremely dependent on the epoxy/acrylate weight ratio. Modulus values ranged from 0.7 to 3.3 GPa at 30 °C, and glass transition temperatures ranged from around 58 °C to approx. 130 °C. No synergistic effect on these two properties was observed. Interpenetrating networks containing equivalent weight proportions of the parent resins showed the highest fracture toughness of the series, exhibiting a KIc value of around 2.1 MPa·m1/2. The results showed that the KIc values did not increase as Mc increased, which seems to suggest that a different mechanism is responsible for the increase in the fracture toughness displayed by IPNs. Also, there seems to be an exponential-type increase in the fracture energy with the Mc1/2 for the materials containing the epoxy phase.},
DOI = {10.7569/JRM.2017.634114}
}