Thermo-mechanical properties of acrylated epoxidized hemp oil based biocomposites

Abstract

In this study, novel acrylated epoxidized hemp oil bioresin was used in the manufacturing of jute fibre reinforced biocomposites. The 100% biocomposite laminates were characterised in terms of mechanical properties (tensile, flexural, Charpy impact and interlaminar shear), thermo-mechanical properties (glass transition temperature, storage modulus and crosslink density) and water absorption properties (saturation moisture level and diffusion coefficient). Comparisons with the equivalent synthetic vinylester resin based jute fibre reinforced biocomposite panels were performed. Scanning electron microscopic analysis confirmed panel samples containing acrylated epoxidized hemp oil to display improved fibre–matrix interfacial adhesion compared with the vinylester resin based samples. Furthermore in terms of mechanical properties acrylated epoxidized hemp oil based biocomposites compared favourably with those manufactured from vinylester resin synthetic resin. Dynamic mechanical analysis found acrylated epoxidized hemp oil based biocomposites to have lower glass transition temperature, storage modulus and crosslink density than vinylester resin based samples. Increasing acrylated epoxidized hemp oil content resulted in a marginal increase in saturation moisture content and diffusion coefficient.

Interpenetrating Polymer Network (IPN) with Epoxidized and Acrylated Bioresins and their Composites with Glass and Jute Fibres

“…2;Cardona et al 2013;Francucci et al 2014); it contained 4.0 acrylate and hydroxyl groups per triglyceride unit. Vinyl ester resin Atlac-580 (CFS Fibreglass Ltd, Cornwall, UK) was used for the control samples.…”

“…Hempseed oil has been suggested to be perfectly balanced in regards to the ratio (3:1) of the two essential polyunsaturated fatty acids (linoleic and linolenic acids) for human nutrition. In recent years we have investigated the utilization of hemp oil as bio-source for the synthesis of thermoset bio-resins in the form of epoxidized hemp oil (EHO) (Manthey et al 2011;Manthey et al 2013;Francucci et al 2013) and acrylated epoxidized hemp oil (AEHO) Francucci et al 2014). However, those pioneering research works on hemp oil-based bio-resins were carried out on each individual bio-resin.…”

Techno‐economic optimization model for “sustainable” insulation material developed for energy efficiency

“…On the other hand, various disadvantages also exist in terms of initial processing cost, biodegradability, energy consumption, and health issues. Thus, developing new bio‐resins from renewable feed stocks for utilization in bio‐composites and fiber is vital to come up with technically, environmentally, and financially efficient materials …”

“…High level of unsaturated fatty acids in vegetable oils favors them due to more of reaction sites, thus resulting in a better polymer. Research is being undertaken at the Centre of Excellence in Engineered Fiber Composites (CEEFC) to develop hemp oil‐based bio‐resins (acrylated EHO and EHO) for bio‐composite applications …”

Vinyl Ester Resin Modified with Acrylated Epoxidised Soybean (AESO) and Linseed (AELO) Oils: Effect of Additional Urethane Crosslinking

“…On the other hand, reports are available on the combined use of VE and AEVO, especially as matrix materials for composites with bio-based (vegetable fibres) reinforcements [30][31] . In case of composites with VE/AEVO matrix possible effects of the type and characteristics (functionalisation) of AEVO can hardly be studied owing to the "masking" by the reinforcements.…”