A simple model to fit and interpret creep curves-behaviour of modified micro-cellulose particulate composites

Article Materials Science, Composites

Modeling of the creep behavior of epoxy/yerba-mate residue composites

Roberta Motta Neves et al.

Summary: This study experimentally and predictively investigated the dynamic mechanical and creep behavior of post-consumed yerba-mate reinforced epoxy composites at the glassy state, and compared the effectiveness of different approaches. The artificial neural network (ANN) method yielded a better fit than the Weibull model, while the response surface methodology (RSM) effectively reduced experimental time and cost without compromising statistical significance.

JOURNAL OF COMPOSITE MATERIALS (2022)

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Article Mechanics

Time-temperature behavior of carbon/epoxy laminates under creep loading

Heitor L. Ornaghi Jr et al.

Summary: This study investigates the time-temperature creep behavior of advanced composite laminates through experiments and analytical modeling, involving Weibull, Eyring, Burger, and Findley models. Experimental creep tests conducted in ten min and two days aim at calibrating fitting parameters essential for validating short-term creep tests. Weibull and Eyring models are found to be more suitable for determining the time-temperature superposition creep response compared to Burger and Findley models.

MECHANICS OF TIME-DEPENDENT MATERIALS (2021)

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Article Chemistry, Applied

Recent studies on modified cellulose/nanocellulose epoxy composites: A systematic review

Roberta Motta Neves et al.

Summary: This paper systematically reviews the research on chemically modified cellulose/epoxy resin composites in the last five years, focusing on their thermal, mechanical, and dynamic-mechanical properties. This methodology helps identify the main knowledge gaps in the field.

CARBOHYDRATE POLYMERS (2021)

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Article Materials Science, Paper & Wood

Micro fibrillated cellulose reinforced bio-based rigid high-density polyurethane foams

Eduardo Fischer Kerche et al.

Summary: This study investigated the use of MFC as a reinforcement to improve the properties of bio-based RPUF, and found that MFC and overpacking have a synergistic effect in enhancing strength, stiffness, thermal stability and dynamic mechanical properties of RPUF.

CELLULOSE (2021)

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Article Polymer Science

Epoxy-based composites reinforced with imidazolium ionic liquid-treated aramid pulp

Eduardo Fischer Kerche et al.

Summary: Surface treatment of polyaramid pulp with physisorbed imidazolium ionic liquids enhanced the interaction with an epoxy matrix, leading to improved mechanical properties and better homogeneity in the composites. The glass transition temperature and storage moduli of the composites were increased, while the fracture toughness was also improved with the addition of IL-treated polyaramid pulp.

POLYMER (2021)

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Article Materials Science, Textiles