Environment-friendly modification of hemp fibre for producing fine yarn for textile application.

Background/Problem Description:

Hemp is a bust natural fibre containing non-cellulosic constituents that can adversely affect fibre cleanliness, handle, softness and processability for fine-yarn applications. Conventional processing may depend substantially on chemical degumming/scouring, which can involve relatively severe processing conditions and may affect fibre quality if not adequately controlled. The technology addresses the need for an improved, enzyme-assisted processing route for hemp fibre that combines chemical degumming with bacterial xylanase treatment. The intended application is production of cleaner, softer and more textile-compatible hemp fibre for subsequent fine-yarn development and other value-added textile applications. The technology is intended for hemp-fibre processors, natural-fibre textile/yarn manufacturers and other users seeking improved processability of hemp fibre. Quantitative market-size/end-user estimates are not yet established in the supplied records.

Technology Description:

The proposed technology is an environment-friendly modification process for hemp fibre involving bacterial xylanase treatment integrated with chemical degumming. Two treatment sequences have been experimentally evaluated: (i) chemical degumming followed by enzymatic treatment and (ii) enzymatic treatment followed by chemical degumming. Route I: Hemp fibre is chemically degummed using NaOH and trisodium phosphate, followed by bacterial xylanase treatment. Route II: Hemp fibre is first treated with bacterial xylanase and subsequently subjected to chemical degumming.

The process provides controlled treatment conditions and a defined sequence intended to improve fibre cleanliness, softness/handle and suitability for fine-yarn processing.