摘要
为解决苎麻氧化脱胶中纤维易被过度氧化而性能受损的问题,在氧化脱胶液中添加了具有纤维素和半纤维素保护效果的试剂1,8-二羟基蒽醌(丹蒽醌),并通过调节1,8-二羟基蒽醌的用量实现了对苎麻纤维理化性能(张伸性能、聚合度、半纤维素含量、制成率等)的调控。结果表明:1,8-二羟基蒽醌用量越高,纤维中半纤维素含量、制成率越高;但纤维拉伸性能随1,8-二羟基蒽醌含量先升高后降低;当1,8-二羟基蒽醌的用量为2%时,脱胶的综合效果最佳,此时纤维的断裂功、聚合度、半纤维素含量、制成率比不使用1,8-二羟基蒽醌时分别提高了41.0%、2.0%、17.3%、7.0%;此外,使用1,8-二羟基蒽醌后,脱胶废水的COD值降低了40%,大幅度提高了氧化脱胶工艺的环保性。
In order to solve the problem of the damage to fibers due to over oxidation during oxidation degumming process of ramie, 1,8-dihydroxyanthraquinone （anthraquinone） as degumming additive for protecting cellulose and hemieellulose was added in alkali hydroxyl peroxide degumming solution. The physical and chemical properties （tensile properties, degree of polymerization, hemicellulose contents and yield） of fiber can be adjusted by controlling the dosage of 1 , 8-dihydroxyanthraquinone. Results show that the hemicellulose contents and yield increase with the increasing of 1,8-dihydroxyanthraquinone dosage, and the tensile properties of fiber first show an upward trend and then a downward trend with the increasing of 1, 8-dihydroxyanthraquinone dosage. With the optimal dosage （2%） of 1, 8- dihydroxyanthraquinone, the content of hemicellulose, the yield of degumming process, polymerization degree and the work of rupture of the degummed fiber are improved by 17.3% , 7% , 2% and 41% , respectively. In addition, the COD value of the degumming wastewater decreases by 40% ,indicating the relatively eeo-friendly oxidation degumming process.
出处
《纺织学报》
EI
CAS
CSCD
北大核心
2018年第2期78-85,共8页
Journal of Textile Research
基金
国家农业产业技术体系建设专项(CARS-19)
中国农业科学院科技创新工程资助项目(ASTIP-IBFC07)
关键词
苎麻
氧化脱胶
1
8-二羟基蒽醌
半纤维素
纤维素
拉伸性能
制成率
ramie
oxidation degumming
1 , 8-dihydroxyanthraquinone
hemieellulose
cellulose
tensile property
yield
