Predictions of Moisture Diffusion Behavior of Cellulose-Fiber-Reinforced Plain Weave Epoxy Composites

Abstract

Cellulose-fiber-reinforced plain weave composites absorb lots of water from humid environments because of their inherent susceptibility to moisture. Moisture absorption experiments with cellulose fiber plain weave composites have been reported by some researchers; however, few theoretical studies have been performed to date to predict their moisture diffusion behavior. In this paper, the moisture diffusion behavior of cellulose-fiber-reinforced plain weave composite is predicted using a novel superposition method considering its microweave pattern. The overall moisture uptake of the composite is treated as moisture absorption superposition of the fiber bundles part, resin part, undulated fiber bundles and resin-rich part in the unit cell. The moisture diffusion of the undulated fiber bundles and resin-rich part is more complicated than the other parts; thus, a solution for a unique three-phase diffusion problem is used to solve this special moisture diffusion issue. Both finite element analysis and experiments are carried out to validate the proposed approach, with the results showing that the predictions can effectively characterize the moisture diffusion behavior of cellulose-fiber-reinforced plain weave composites.

High mechanical properties performances of woven as a satin cloth type of long Alfa, Sisal and hybrid Alfa/Sisal fibers reinforced Epoxy

“…Besides, the peaks at 1155 cm − 1 and 1099 cm − 1 are a characteristic of the stretching frequency of the C-O-C groups which indicates the presence of the cellulose for treated ber [20]. The occurrence of the peak at 1022 cm − 1 is attributed to the stretching vibration of C-O bonds of cellulose [15,34,35], while the 896 cm − 1 and 609 cm − 1 peaks are associated to (C-O-C) groups related respectively to the β-glycosidic linkages between glucose in the cellulose and the deformation vibration of the C-OH bond [21,32,36]. Now, from Fig.…”

An experimental and finite element simulation study of moisture absorption in an ordered PVAF-reinforced thermoplastic starch composite film

“…For D and C sat , the Arrhenius formula is used 35 :where Q D and Q C are the activity energy constants, R is the Boltzmann constant, T is the temperature, and D 0 and C 0 are constant coefficients.…”

Mesoporous silica/epoxy coated cotton fabric for durable oil-water separation

“…34 It is used for coating, composites, sealants, and adhesives in addition to the conventional applications like electrical insulators. 35,36 The molecular network of the epoxy can be altered depending on the applications due to the reactive nature of the oxirane ring with selective cross linking agents and modifiers. 37,38 Owing to the presence of very high surface functionalities such as peripheral hydroxyl (−OH) groups and ether (−O−) bonds, epoxy has strong adhesion to various substrates.…”

“…As previously mentioned, epoxy materials have been used as a coating materials for textile applications. 35,36 In contrast, no significant emphasis has been placed on studying UV-resistant nature, surface behavior, or oil–water separation efficiency. In a similar context, the development of mesoporous materials for oil–water separation has not been explored.…”