In recent years, with the country advocating the establishment of a resource-saving and environmentally friendly society, people have been pursuing a green and healthy quality of life. The non-toxic, harmless, and biodegradable characteristics of grass and wood dyeing have brought this method back to people's lives. Despite the presence of antibacterial substances such as tetrahydrocannabinol in cannabis fibers, they are still susceptible to microbial attacks. In recent years, scholars have conducted more research on the separation and purification of gardenia flower pigments, but there has been less analysis on the dyeing fibers and performance testing of gardenia flowers. The renewable characteristics, fewer side effects, and low cost increase the use of natural drugs as antibacterial agents in plant extracts or their active ingredients. This experiment used gardenia flowers as the raw material for dyeing experiments, and the dyeing percentage was used as the inspection index. Ultrasonic dyeing was carried out on hemp fibers after degumming treatment. It also aims to endow these dyed fabrics with natural antibacterial properties. During the sorting process, a liquid bath ratio of 1:20 was selected and experiments were conducted under different parameter variations. During the dyeing process, potassium aluminum sulfate (alum) is used as a mordant, and ultrasound is used as an auxiliary dyeing method. After dyeing, evaluate the fibers based on the percentage of exhaustion of obtained fiber and antibacterial activity against Staphylococcus aureus and Escherichia coli. At the same time, the FT-IR analysis, strength, and color fastness of the sorted samples were also checked. Single factor experiments were conducted by controlling the ultrasonic frequency, dyeing temperature, time, and mordant concentration to analyze the effect of gardenia pigment on the dyeing percentage. Response surface design experiments were used to optimize the dyeing process parameters. The research results indicate that the optimal process conditions for dyeing gardenia flowers are ultrasonic power of 85 %, dyeing temperature of 77 ℃, dyeing time of 60 min, and mordant concentration of 15 g/L. The main and secondary order of factors affecting the dyeing effect of hemp fibers is: mordant concentration>ultrasonic power>dyeing temperature. After optimal dyeing process, the hemp fiber shows a bright yellow color with a dyeing percentage of 57.32 %. The single fiber strength is not affected, and the color fastness to water washing and sun exposure meets the requirements for consumption. The infrared spectrum shows good dyeing effect. It has a certain antibacterial effect on Staphylococcus aureus, but the antibacterial effect on Escherichia coli is not significant. Due to these processes, it has been determined that hemp fiber can obtain antibacterial activity through the use of gardenia flowers and can be effectively colored.

中文翻译：

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使用栀子色素对大麻纤维进行超声波自然染色：迈向可持续染色的一步


近年来，随着国家倡导建立资源节约型、环境友好型社会，人们不断追求绿色健康的生活品质。草木染色无毒、无害、可生物降解的特点，让这种方法重新回到了人们的生活中。尽管大麻纤维中存在四氢大麻酚等抗菌物质，但它们仍然容易受到微生物的攻击。近年来，学者们对栀子花色素的分离纯化研究较多，但对栀子花染色纤维及性能测试的分析较少。可再生的特性、较少的副作用和低成本增加了天然药物作为植物提取物或其活性成分中的抗菌剂的使用。本实验以栀子花为原料进行染色实验，以染色百分率作为检验指标。对脱胶处理后的大麻纤维进行超声波染色。它还旨在赋予这些染色织物天然的抗菌性能。分选过程中，选择液浴比1:20，并在不同参数变化下进行实验。染色过程中采用硫酸铝钾（明矾）作为媒染剂，采用超声波作为辅助染色方法。染色后，根据所得纤维的吸尽率和对金黄色葡萄球菌和大肠杆菌的抗菌活性来评价纤维。同时，还检查了分选样品的 FT-IR 分析、强度和色牢度。 通过控制超声波频率、染色温度、时间和媒染剂浓度进行单因素实验，分析栀子色素对染色率的影响。采用响应面设计实验来优化染色工艺参数。研究结果表明，栀子花染色的最佳工艺条件为超声波功率85%、染色温度77℃、染色时间60min、媒染剂浓度15g/L。影响大麻纤维染色效果的因素主次顺序为：媒染剂浓度%3超声波功率%3染色温度。经过优化的染色工艺后，大麻纤维呈亮黄色，染色率为57.32%。单纤维强力不受影响，耐水洗、日晒色牢度满足消费要求。红外光谱显示染色效果良好。对金黄色葡萄球菌有一定的抗菌作用，但对大肠杆菌的抗菌作用不显着。由于这些过程，已经确定大麻纤维可以通过使用栀子花获得抗菌活性，并且可以有效地着色。