Method for degumming industrial hemp fiber by periodate

• Main Authors: ZHENG YONGJIE, WANG JIAYI, SUN YING, YU CHUNYU, LI DUANXIN
• Format: Patent
• Language: Chinese; English
• Published: 05.04.2024
• Subjects: BLEACHING LEATHER OR FURS; CARBONISING RAGS TO RECOVER ANIMAL FIBRES; CHEMICAL TREATMENT OF NATURAL FILAMENTARY OR FIBROUS MATERIALTO OBTAIN FILAMENTS OR FIBRES FOR SPINNING; DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS,YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; LAUNDERING; MECHANICAL TREATMENT OF NATURAL FIBROUS OR FILAMENTARYMATERIAL TO OBTAIN FIBRES OF FILAMENTS, e.g. FOR SPINNING; NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING; TEXTILES; TREATMENT OF TEXTILES OR THE LIKE

The invention discloses a method for degumming industrial hemp fiber by periodate, which comprises the following steps: putting industrial hemp into a sodium hydroxide alkaline solution, and pretreating to fully swell the fiber; then washing to be neutral; under the acidic condition that the pH is equal to 5-6, periodate and metal ions form an advanced oxidation reaction system, further degumming is conducted on the industrial hemp fibers, the metal ions are Fe < 2 + >, Fe < 3 + >, Cu < 2 + > or Mn < 2 + >, the concentration of the metal ions is 1.5-3.5 wt%, the concentration of IO4 <-> is 2.0-2.5 wt%, treatment is conducted for 50-60 min at the temperature of 50-60 DEG C, and then washing is conducted; and carrying out deep degumming and bleaching treatment on the industrial hemp fibers by using the oxygen bleaching liquid, washing and drying. The technological process has the advantages of being small in chemical reagent dosage, simple in step, short in reaction time, small in environmental pollution, lower