Seaweed viscose represents one of the latest innovations in functional textile materials, combining the traditional properties of viscose fiber with the exceptional antibacterial and cooling effects of seaweed extract. This polysynthetic material is produced from regenerated cellulose with the addition of natural active substances from seaweed, creating a unique fiber with multifunctional properties. Seaweed fiber is characterized as a biodegradable cellulose fiber saturated with seaweed powder extracted from seaweed leaves and contains natural cooling and antibacterial properties.
History and Development
Origins of the Technology
The history of seaweed viscose is relatively short compared to traditional textile fibers, as it is a modern 21st-century innovation. The first patents related to viscose fiber with seaweed antibacterial function were filed in 2009–2010 in China, marking the beginning of its commercial development. The technology further developed with patents from 2014–2015 describing advanced methods for producing seaweed composite cellulose fibers.
Technological Progress
A breakthrough came with the development of advanced microencapsulation processes, which allowed efficient incorporation of seaweed extracts into viscose fibers. The production process uses nano-grinding and microencapsulation technology to combine active components of natural seaweed with cellulose in the form of a microcapsule coating, which is then spun into fibers. This ensures that the active substances remain evenly distributed within the fiber and retain functionality even after repeated washing.
Modern Development
Currently, seaweed viscose is produced using advanced processes that include adding ultra-fine seaweed extract particles smaller than 200 nm into the viscose spinning solution. The technology is continuously being improved to increase durability of functional properties and optimize production processes.
Production Process
Preparation of Seaweed Extract
Production begins with preparing seaweed extract from natural seaweed leaves without chemical additives. The seaweed is mechanically ground into particles smaller than 200 nm, typically 100–150 nm. The extract can also be prepared as a solution by dissolving it in water at 15°C in a ratio of 200 g per 1000 ml.
Microencapsulation Technology
A key process is microencapsulation, where active seaweed compounds are enclosed in microcapsules and added to the viscose solution. β-cyclodextrin is used as a carrier material to trap seaweed oil and enable controlled release. The process includes preparing menthol microcapsules, blending them with seaweed extract, and then adding them to the spinning solution.
Spinning Process
Fine particles of seaweed extract or their solution are added to a viscose spinning solution with a 5% fiber content in a ratio of 1–10% by weight. After mixing and vacuum de-foaming, the solution is processed via wet spinning through a metering pump, candle filter, and spinnerets into a 40°C coagulation bath. The bath consists of sulfuric acid (85 g/L), sodium sulfate (270 g/L), and other chemicals required for fiber solidification.
Properties of Seaweed Viscose
Mechanical Characteristics
Seaweed viscose has material properties similar to 100% viscose processed from wood and seaweed, with a weight of 250 g, an average micron value of 18–20, and a fiber length of 3–5 inches. The fiber has exceptional softness and flexibility, with seaweed serving as a biological source with unique characteristics. SeaCell Active fiber is a lyocell fiber combined with seaweed and silver, derived from wood pulp and seaweed, and it stimulates metabolism by delivering protective and anti-inflammatory properties to the skin.
Functional Properties
Seaweed is a natural and pure raw material rich in trace minerals, amino acids, and vitamins with anti-inflammatory properties. Since it is not chemically treated, it contains an activating factor that keeps the skin fresh, and its high antioxidant content helps neutralize free radicals that damage skin and accelerate aging. The fiber is ideal for skin-contact applications due to its softness and breathability.
Comparison with Other Fibers
After weaving, the fiber is lightweight, soft, flexible, breathable, and has a silky smooth feel. SeaCell remains 85% dry in humid conditions and is stronger and more durable than cotton and linen. It is 50% more breathable than cotton and does not require dry cleaning. It blends well with other fibers and is suitable for a wide range of applications.
Applications in the Textile Industry
Apparel Industry
Seaweed viscose is widely used in fashion for various types of clothing. It is especially suitable for summer clothing, sportswear, and underwear due to its breathability and antibacterial properties. Brands such as Lululemon and Frank and Oak already use seaweed-based fibers. SeaCell is mainly used in knitwear, underwear, and sportswear.
Medical Applications
In healthcare, seaweed fibers are used for hospital bedding, patient clothing, and skin-related products. The material provides comfort and aesthetic qualities and can act as a mosquito repellent. Studies show that minerals and vitamins in seaweed components are beneficial to the skin without causing allergic reactions and can provide long-lasting antibacterial effects.
Technical and Special Applications
Seaweed fibers are also used in technical textiles such as nonwoven materials, filters, and composites. Alginate fibers have exceptional properties including improved comfort and skin hydration, antibacterial and antimicrobial effects, flame resistance with an LOI of 45%, and excellent moisture absorption. They also have antistatic properties because they absorb moisture from air and do not generate static electricity.
Blended Applications
Research shows that blends of 70% seaweed fiber and 30% cotton provide excellent properties. Other blends include 85% biodegradable nylon and 15% seaweed viscose, which biodegrades in 6 weeks compared to 11 weeks for cotton. Seaweed fibers are often combined with wool, cotton, or lyocell to enhance functionality and aesthetics.
Environmental Aspects and Sustainability
Ecological Benefits
Seaweed can grow up to two feet per day and can sequester 20 times more carbon than terrestrial forests. When sea plants die, some sink to the ocean floor, locking carbon away instead of releasing it into the atmosphere. Seaweed forests also absorb agricultural and sewage waste and use it for growth.
Sustainable Cultivation
Seaweed grows rapidly and absorbs carbon efficiently. Companies such as SeaCell cultivate and harvest seaweed sustainably to support regrowth and carbon sequestration. Seaweed requires no soil, freshwater, or pesticides. Production begins with extracting sodium alginate from brown seaweed, which is then converted into calcium alginate.
Biodegradability
Seaweed viscose is fully biodegradable and compostable because it is made from renewable plant components. It is carbon-neutral and can naturally return to the ecosystem at the end of its lifecycle without environmental harm. The production process recycles more than 99% of solvents and water, similar to other advanced cellulose fibers.
Future and Trends
Market Perspectives
The seaweed fiber market is experiencing strong growth due to increasing demand for sustainable materials. Eco-conscious lifestyles are becoming more common as climate awareness increases. Consumers are actively seeking environmentally friendly clothing solutions.
Technological Innovations
Recent research has advanced alginate fibers using natural crosslinking agents such as chitosan, ferulic acid, and citric acid. These fibers show mechanical properties comparable to wool, polyester, rayon, and nylon depending on the treatment used.
Industrial Applications
The textile industry is increasingly adopting sustainable production methods to meet demand for eco-friendly clothing. Hotels and resorts are also introducing sustainable textiles to reduce their carbon footprint. Awareness of climate change is driving demand for environmentally friendly apparel worldwide.
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