Abstract
Flax fibers used for various applications are obtained from flax stems. Retting followed by drying and mechanical separation leads to the production of fibers. This review article discusses the application of electro-technologies in the production of bast fibers from the flax stem. In these technologies, flax stems harvested from the field are subjected to microwave assisted retting, followed by electro–osmotic dewatering which reduces the water content of the stems. Dewatered stems are transferred to a microwave chamber for further drying, thus retted stems are obtained for further processing.
Highlights
Natural agriculture fiber has been used all over the world since ancient times
The flax stems were harvested using combine harvester and they were collected as bales and stored without doing any treatment and those are subjected to microwave-assisted retting process
Microwave and radio frequency are the possible electro-magnetic energies to be used for the fibrous plant retting
Summary
Natural agriculture fiber has been used all over the world since ancient times. In the past, plant fiber was used for making clothes, but it has a wide range of applications from automotive to aerospace industries [1]. The big disadvantage of natural fibers is that they do not have same consistency in quality as compared to synthetic fibers This inconsistency is due to a variety of reasons such as climate, crop variety, retting process, and processing equipment used for fibers [2]. The stem is used for the production of fiber, bio composites, high quality paper and many other industrial applications. Flax seeds are primarily used in the food industry, while the plant stems are used in fiber production. Retting and drying are the two important energy intensive processes, which determine the quality of the fiber. Those processes should be conducted with better precision for getting high quality fibers. This review paper discusses the application of electro-technologies in various steps in the processing of bast fiber from flax stem
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