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Journal of Applied Polymer Science
Article . 2026 . Peer-reviewed
License: CC BY NC ND
Data sources: Crossref
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From Hemp Bast to Lyocell Fiber: Sustainable Process Optimization for Lyocell‐Grade Dissolving Pulp

Authors: Md Abu Sayed; Lelia Lawson; Bernardo Araujo Souto; K. M. Abdun Noor; Dagem Z. Haddis; Frehiwot T. Hailu; Jane Batcheller; +2 Authors

From Hemp Bast to Lyocell Fiber: Sustainable Process Optimization for Lyocell‐Grade Dissolving Pulp

Abstract

ABSTRACT The growing demand for sustainable cellulose textile fibers drives the search for alternative raw materials and potentially more sustainable pulping methods. This study presents a modified pre‐hydrolysis kraft (PHK) process, free of chlorine, sulfur, and strong acids, to prepare lyocell‐grade dissolving pulp from Canadian hemp bast fiber (cultivar: ANKA). The optimized pulping method comprises sodium hydroxide alkali treatment, mild chelation, and totally chlorine‐free (TCF) alkaline hydrogen peroxide bleaching while omitting the pre‐hydrolysis stage. The produced pulp achieved 97% α‐cellulose, 3.3% hemicellulose, and < 0.1% lignin, with an intrinsic viscosity of 3.05 dL/g, suitable for lyocell fiber manufacturing. Transition metal content was below 10 ppm, and alkali and alkaline earth metal concentrations were under 100 ppm. The pulp dissolved in aqueous N‐methylmorpholine N‐oxide (NMMO) to form a homogeneous spinning solution. Lab‐scale spinning yielded continuous hemp‐based lyocell fibers with smooth surfaces, uniform cross‐sections, and crystallinity values typical of undrawn regenerated cellulose fiber. The results demonstrate that this optimized process enables hemp bast, a non‐wood fiber source, to serve as an effective feedstock for lyocell fiber production. This approach helps bridge the global cellulose gap while providing a potentially more sustainable alternative to conventional wood and cotton sources.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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