Bamboo-blend T-Shirt

Material Composition Assumptions

Bamboo-blend t-shirts contain regenerated cellulose fiber derived from bamboo through viscose or lyocell processing methods. The primary component consists of bamboo viscose making up between 50 and 100 percent of the total fiber content. Additional synthetic polymers including cotton, polyester, or elastane typically comprise the remaining portion when blended compositions are used.

For a standard 150-gram garment, approximately 120 grams represents bamboo-derived viscose fiber while 30 grams consists of complementary synthetic or natural fiber blends. The regenerated cellulose undergoes chemical processing to transform raw bamboo into spinnable fibers suitable for textile manufacturing.

Manufacturing Geography

Primary production occurs in China and other Asian countries where both bamboo cultivation and textile processing infrastructure concentrate. China’s electrical grid operates at 555 grams of carbon dioxide per kilowatt-hour, significantly influencing the energy-intensive viscose production process. Manufacturing gravitates toward these regions due to established supply chains connecting bamboo forests with chemical processing facilities and garment assembly operations.

The concentration of specialized equipment for regenerated fiber production, combined with proximity to raw bamboo sources, creates geographic advantages that outweigh transportation costs for most global markets.

Regional Variation

Manufacturing Region	Grid Intensity	Estimated CCI Score	Adjustment vs Default
China	555 gCO2/kWh	48	Baseline
India	708 gCO2/kWh	52	+8%
Turkey	436 gCO2/kWh	44	-8%
Austria	159 gCO2/kWh	35	-27%
Indonesia	709 gCO2/kWh	53	+10%

Provenance Override Guidance

1. Detailed viscose production records including chemical recovery rates, energy consumption per kilogram of fiber, and processing method documentation (closed-loop versus conventional systems).

2. Transportation manifests covering bamboo raw material shipment from cultivation sites to processing facilities and finished goods distribution to retail destinations.

3. Facility-specific electricity consumption data with renewable energy certificates or direct grid intensity measurements from fiber production and textile manufacturing locations.

4. Chemical usage documentation specifying sodium hydroxide, sulfuric acid, and carbon disulfide quantities per production batch with recovery efficiency percentages.

5. Bamboo cultivation practices including growth cycle duration, land use intensity, and agricultural input requirements for specific fiber batches.

Methodology Notes

• The CCI score represents cradle-to-gate emissions for a single bamboo-blend t-shirt including raw material extraction, fiber processing, textile manufacturing, and transportation to retail distribution centers.

• Scope 3 dominates the emission profile due to energy-intensive viscose production processes and chemical processing requirements that occur throughout the upstream supply chain.

• The functional unit assumes a 150-gram finished garment with standard cotton-weight fabric suitable for typical consumer use patterns.

• Consumer use phase including washing, drying, and end-of-life disposal falls outside the current assessment boundary.

• Data gaps exist around small-scale bamboo cultivation practices and emerging lyocell processing technologies that may offer improved environmental performance compared to conventional viscose methods.