Cellulose, fibers & wood chemicals

01Overview and value chain

Markers: [EC: REACH restriction pressure on CS2 solvent | OECD: Bio-materials & circular bioeconomy | Regulator: FDA (US textile/food-contact), EFSA (EU), REACH (EU chemical safety)]

Cellulose, fibers and wood chemicals covers the industrial-scale transformation of wood pulp into cellulosic textile fibers (viscose/rayon, Lyocell, cellulose acetate) and wood-derived chemicals (turpentine, rosin, wood alcohol), a market undergoing its most significant technology shift in decades as the industry replaces the toxic carbon disulfide (CS2) solvent of classical viscose production with closed-loop N-methylmorpholine N-oxide (NMMO) solvent spinning. Lenzing launched its TENCEL Lyocell HV100 fiber in China at Intertextile Shanghai in March 2026, using Variocut technology to create controlled staple-length variation for a natural, matte, textured hand, expanding the brand from denim into broader woven apparel. Eastman Chemical introduced Naia Lyte, a new higher-tenacity cellulose acetate filament yarn, at Première Vision Paris in February 2026, building on its 2025 Naia partnership with Huafon Chemical to enable localized cellulose acetate production in China. The USDA Forest Products Laboratory in Madison, Wisconsin continues its position as a leading nanocellulose (CNC/CNF) research center, with 2026 publications covering processing methods and downstream applications for wood-fiber-derived nanoscale materials. Sateri, part of Singapore’s Royal Golden Eagle group and China’s first wholly foreign-owned cellulosic fiber producer since 2002, operates roughly 1.5 million tonnes/year of cellulosic fiber capacity across five Chinese factories and markets its EcoCosy sustainable viscose brand, whose EcoCosy BVR product won a Jiangxi provincial quality award in late 2025.

The key directions of cellulose, fibers and wood chemicals are:

1. CS2-free viscose and Lyocell spinning: replacing the toxic carbon disulfide solvent of classical rayon production with closed-loop NMMO solvent systems that recover roughly 99% of the organic solvent.
2. Cellulose acetate filament yarns: higher-tenacity acetate fibers for premium apparel, distinct from the historical cigarette-filter application of cellulose acetate.
3. Wood chemical byproduct valorization: turpentine, rosin and wood alcohol recovered from pulping processes as chemical feedstocks rather than waste streams.
4. Alternative non-wood cellulose feedstocks: bamboo and agricultural residue (wheat straw) as lower-footprint cellulose sources compared with softwood pulp.

Sectoral value chain

[Wood pulp / bamboo / agricultural residue] ──> [Cellulose dissolution (NMMO or acetylation)] ──> [Fiber spinning]
                                                                                                          │
                                                                                             (Solvent recovery loop)
                                                                                                          │
     [Apparel / textiles / nonwovens] <──── [Yarn/fabric manufacturing] <─── [Fiber finishing & quality testing]

Value chain levels

Cross-cutting technologies of the sector:

• NMMO closed-loop Lyocell spinning: dissolving wood pulp directly in N-methylmorpholine N-oxide without derivatization, recovering approximately 99% of the solvent in a closed loop, eliminating the toxic CS2 byproducts of classical viscose.
• Cellulose acetate filament technology: acetylating cellulose with acetic anhydride to produce filament yarns with silk-like hand and improved tenacity for premium apparel applications.
• Non-wood cellulose feedstock processing: adapting pulping and dissolution processes to bamboo and agricultural residues (wheat straw) as lower-footprint alternatives to softwood dissolving pulp.

02US

The United States combines cellulose acetate innovation with world-leading nanocellulose research infrastructure at its federal forest products laboratory.

Eastman’s Naia Lyte launch, USDA Forest Products Laboratory’s nanocellulose R&D, China production partnership

• Eastman’s Naia Lyte: introduced a new higher-tenacity cellulose acetate filament yarn at Première Vision Paris in February 2026, adding durability to acetate filament for lightweight, premium fabrics with a silk-like hand.
• USDA Forest Products Laboratory: the Madison, Wisconsin-based federal research center continues its position as a leading nanocellulose (CNC/CNF) R&D hub, with 2026 publications on processing methods and downstream applications for wood-fiber-derived nanoscale materials.
• China production partnership: Eastman’s Naia brand established a strategic partnership with Huafon Chemical to enable localized cellulose acetate filament production in China, following its 2025 unveiling at Intertextile Shanghai.

03CN

China is the world’s dominant producer of viscose fiber and is scaling Lyocell and bamboo-cellulose alternatives to reduce dependence on the toxic CS2 viscose process.

Sateri’s EcoCosy sustainable viscose, China’s viscose production dominance, Lyocell transition

• Sateri: part of Singapore’s Royal Golden Eagle group and China’s first wholly foreign-owned cellulosic fiber producer since 2002, operates roughly 1.5 million tonnes/year of cellulosic fiber capacity across five Chinese factories, marketing its EcoCosy sustainable viscose brand whose EcoCosy BVR product won a Jiangxi provincial quality award in late 2025.
• Viscose production dominance: China produces roughly 5 million tonnes/year of viscose fiber, representing an estimated 65% of the global market, alongside substantial furfural (approximately 70% of global production) and lignosulfonate output derived from wood-processing byproducts.
• Lyocell transition: Chinese cellulosic fiber producers are investing in Lyocell production lines using the closed-loop NMMO process to reduce reliance on the toxic CS2 solvent required by classical viscose manufacturing, alongside bamboo-cellulose fiber as a lower-footprint alternative to softwood pulp.

04EU

The European Union, anchored by Austrian and Nordic fiber and chemical companies, leads commercial-scale closed-loop Lyocell production and REACH-driven phase-out of toxic viscose solvents.

Lenzing’s TENCEL Lyocell expansion, REACH pressure on CS2 solvent, closed-loop solvent recovery

• Lenzing’s TENCEL Lyocell expansion: launched its TENCEL Lyocell HV100 fiber in China at Intertextile Shanghai in March 2026, using Variocut technology to create controlled staple-length variation for a natural, matte, textured hand, expanding the brand from denim into broader woven apparel markets.
• REACH pressure on CS2 solvent: the EU’s REACH chemical safety regulation continues to pressure classical viscose manufacturing’s toxic carbon disulfide solvent, accelerating European producers’ shift toward closed-loop Lyocell processes that eliminate CS2 entirely.
• Closed-loop solvent recovery: European Lyocell producers recover approximately 99% of their NMMO solvent in a closed loop, a structural advantage over CS2-dependent viscose that both reduces environmental impact and insulates production from solvent-related regulatory risk.

05Leading companies and research institutes

06Tech stack and innovations

The cellulose, fiber and wood chemicals stack combines solvent chemistry with fiber-spinning process engineering:

1. NMMO closed-loop Lyocell spinning:
   • Wood pulp is dissolved directly in N-methylmorpholine N-oxide without chemical derivatization, then extruded and coagulated into fiber, with approximately 99% of the solvent recovered and recycled in a closed loop — eliminating the toxic carbon disulfide (CS2) byproduct stream of classical viscose production.
2. Cellulose acetate filament technology:
   • Cellulose is acetylated with acetic anhydride to produce acetate flake, which is dissolved and spun into filament yarn with a silk-like hand; newer higher-tenacity variants add durability for premium woven and knit apparel applications beyond the historical cigarette-filter use case.
3. Non-wood cellulose feedstock adaptation:
   • Pulping and dissolution processes are adapted to bamboo and agricultural residues such as wheat straw, offering a lower-footprint cellulose source compared with softwood dissolving pulp, particularly relevant where forestry land is constrained.

07Value chains and production pipelines

Industrial pipeline for closed-loop Lyocell fiber production

┌───────────────────────────┐      ┌───────────────────────────┐
│ 1. Dissolving-grade pulp   │ ───> │ 2. NMMO dissolution &      │
│    sourcing                     │      │    dope preparation              │
└───────────────────────────┘      └───────────────────────────┘
                                                 │
                                                 ▼
┌───────────────────────────┐      ┌───────────────────────────┐
│ 4. Solvent recovery         │ <─── │ 3. Fiber spinning &        │
│    (closed loop)                │      │    coagulation                   │
└───────────────────────────┘      └───────────────────────────┘
              │
              ▼
┌───────────────────────────┐      ┌───────────────────────────┐
│ 5. Yarn/fabric              │ ───> │ 6. Quality testing &       │
│    manufacturing                │      │    apparel shipment              │
└───────────────────────────┘      └───────────────────────────┘

Stage 1: Dissolving-grade pulp sourcing

Wood pulp meeting dissolving-grade purity specifications is sourced from certified forestry operations, with bamboo or agricultural residue increasingly used as lower-footprint alternative feedstocks.

Stage 2: NMMO dissolution and dope preparation

The pulp is dissolved directly in N-methylmorpholine N-oxide solvent without chemical derivatization, producing a spinnable cellulose dope.

Stage 3: Fiber spinning and coagulation

The cellulose dope is extruded through spinnerets into a coagulation bath, forming continuous cellulosic fiber filaments as the solvent is displaced.

Stage 4: Solvent recovery (closed loop)

The NMMO solvent is recovered from the coagulation bath and recycled back into the dissolution stage, with approximately 99% of the solvent reused across production batches.

Stage 5: Yarn/fabric manufacturing

The spun fibers are processed into yarn and woven or knitted into fabric for apparel, home textile or nonwoven end uses.

Stage 6: Quality testing and apparel shipment

Finished fabric undergoes tenacity, hand-feel and dye-affinity testing before certification and shipment to apparel manufacturers.