可溶性止血医用棉纱布的制备及其性能

为提高羧甲基化医用棉纱布的可溶性,发挥其止血作用,采用单因素法探究溶媒法制备工艺。考察了碱化预处理的碱液质量分数、碱化时间和醚化反应的氯乙酸质量分数、醚化时间和醚化温度等因素对棉纱布溶解性能的影响,确定出较佳制备工艺,并借助红外光谱仪、扫描电子显微镜对所制得的可溶性止血纱布进行表征。结果表明:在较佳的可溶性止血纱布制备工艺下,即碱化预处理时碱液质量分数为20%、碱化时间为30 min,醚化时氯乙酸质量分数为10.5%、醚化时间为4 h、醚化温度为70 ℃,棉纱布完全溶解所需时间为4 h;棉纱布发生了羧甲基化反应,羧甲基化后纤维直径增加。     

医用脱脂棉纱布的氧化改性处理及其性能研究

为改善医用脱脂棉纱布的吸液性能,采用过碳酸钠对其进行氧化改性处理,得到氧化医用棉纱布,研究过碳酸钠溶液质量浓度、处理温度、处理时间、过碳酸钠溶液p H值对氧化医用棉纱布吸液性能和力学性能的影响。结果表明:在其他工艺参数一定的条件下,随着过碳酸钠溶液质量浓度的增加,或处理温度的升高,或处理时间的延长,氧化医用棉纱布的吸液率、断裂强力、断裂伸长率均呈现先上升后下降的趋势;随着过碳酸钠溶液p H值的增大,氧化医用棉纱布的吸液率、断裂伸长率先增大后减小,其断裂强力则不断减小。得到了过碳酸钠氧化处理医用脱脂棉纱布的较佳工艺参数(过碳酸钠溶液质量浓度0.10 g/L、处理温度40℃、处理时间1.5 h、过碳酸钠溶液pH值9)。此时氧化医用棉纱布的吸液性能达到最佳,其断裂强力能够满足有关标准要求。     

载布洛芬医用纱布的制备及性能研究

探讨载布洛芬医用纱布的制备方法及其性能。采用壳聚糖负载布洛芬对棉纱布涂层的方法,制备了壳聚糖基载药复合抗菌医用纱布。利用制得的壳聚糖载药涂层溶液对医用纱布进行抗菌整理,测定整理前后纱布的断裂强力与透气性、负载率、抗菌性能等指标。试验结果表明:当壳聚糖浓度为2%,涂层为2层,布洛芬含量为10%时,其对金黄色葡萄球菌和大肠杆菌具有较好的抑菌效果,能显著提升棉纱布的抗菌性能。认为:该载布洛芬抗菌纱布抗菌性较好,可用做医用纱布。     

医用脱脂棉纱布的氧化改性处理及性能分析

随着我国医疗设施的不断改革,医用脱脂棉纱布的吸液性能有了长足的发展,通过过碳酸钠进行氧化改性处理形成氧化医用棉纱布。文章从氧化改性的实验进行介绍,分析其表现特征和性能。在过碳酸钠氧化过程中,充分体现出该方法是脱脂棉纱布进行氧化的最佳方法,但是其纤维工艺也会对实验结果造成一定影响。     

海藻纤维在医疗和防护纺织品中的应用

海藻纤维以其优异特性（高吸湿成胶性、整体易去除性、高透氧性、生物相容性、生物降解吸收性、高离子吸附性）以及环保的生产工艺已在医疗行业作为医用纱布、敷料等得到广泛应用，并显示出作为防护织物的潜力。文章主要介绍了海藻纤维的制备方法以及高吸湿性、抗菌除臭、远红外辐射和调温等功能性医用海藻纤维：电磁屏蔽和抗静电、阻燃等防护性海藻纤维。     

专利信息

一种腈纶棉型纤维油剂;用于腈纶棉型纤维的油剂;一种活性染料固色剂及其生产工艺;一种医用棉织物防护隔离材料及其制备方法;溶胶-凝胶抗紫外整理液及其在制备抗紫外织物中的应用;腈纶棉型纤维油剂。     

高湿挤压米糠渣中可溶性膳食纤维制备工艺的研究

为得到酶法制备高湿挤压米糠渣中可溶性膳食纤维的最适制备工艺参数,以高湿挤压米糠渣为原料,研究料水比、纤维素酶添加量、溶液pH、反应温度、反应时间等因素对可溶性膳食纤维提取量的影响,通过单因素试验和正交试验,确定最佳制备条件为:料水比1:15,纤维素酶添加量0.8%,溶液pH4.5,反应温度55℃,反应时间1.5h。在此条件下,制备的可溶性膳食纤维产率为24.14%,明显高于未经高湿挤压的米糠渣。     

甲壳胺和海藻酸纤维在医用敷料中的应用

阐述了新型医用敷料的具体功能要求,介绍了甲壳胺纤维和海藻酸纤维的制备方法和性能.这两种纤维都有很好的生物活性和理化性能,具有良好的吸湿性和保湿性,其织物作为医用敷料临床应用表明,治愈效果明显优于传统纱布.     

生物医用纳米纤维相容性和可降解性的评估

通过嵌套式电纺设备获得的PLGA纳米纤维纱布与普通医用纱布用在大鼠体上对比试验,对PLGA纳米纤维生物相容性和生物降解性能进行研究,结果表明纳米纤维纱布具有良好的生物相容性和可降解性。     

1999年黑龙江省医用纤维制品质量监督

1999年,黑龙江省纤维检验所依据省技术监督局下达的《黑龙江省产(商)品质量监督检验计划》,对我省医用纤维制品(脱脂棉、脱脂纱布、脱脂绷带等)进行了纤维质量检查。现将结果汇总如下: 一、全面深入地开展医用纤维制品的质量监督检查 医用纤维制品属较为特殊的产品,它既有卫生安全要求,又涉及纤维质量。为了使此次监督检查     

刍议医用棉纱布层结构设计及其定向吸液能力

医用棉纱布层结构设计直接影响其定向吸液能力的强弱。通过试验,分别阐述了吸收层、伤口接触层以及纱布中间结构设计对医用棉纱布定向吸液能力的影响,分析了医用棉纱布层结构,希望能够为医疗事业的发展提供助力。     

水刺非织造布替代脱脂纱布的可行性研究

对水刺法非织造布与传统脱脂纱布的医用性能和技术指标进行了比较和对照分析,重点介绍了医用水刺非织造布的特点及其使用性能,并讨论了用其替代传统脱脂纱布的可行性。     

强吸附型纳米银溶液的研制及在抗菌医用敷料中的应用

在临床上,伤口很容易感染而不易愈合,这是由于伤口表面一般有一个温暖而且潮湿的环境,金黄色葡萄球菌、念珠菌和大肠杆菌等病原体在伤口上很快繁殖引起的.为了控制伤口细菌的繁殖,防止伤口感染,大量医用敷料被广泛应用于伤口覆盖保护,并在医用敷料使用的同时考虑加入抗生素或各种各样的抗菌材料,以协助控制止血、保护伤口、减少感染、吸收分泌物、保持体温和促进伤口愈合.     

Modified cotton gauze with nano-Ag decorated alginate microcapsules and chitosan loaded with PVP-I

This study was aimed at improving the conventional cotton gauze for achieving advanced wound dressing specifications. Firstly, microcapsules of alginate (Alg-MC) were formed and silver nanoparticles (AgNPs) were synthesized in situ inside (Method I: Ag/Alg-MC) or on (Method II: Ag@Alg-MC) Alg-MC. A solution of chitosan (CS) containing already prepared povidone-iodine (PVP-I) was loaded with Ag/Alg-MC or with Ag@Alg-MC. Finally, conventional cotton gauze substrate was impregnated with these two prepared dispersions and dried. Both samples showed antibacterial properties against gram-negative (Escherichia coli) and gram-positive bacterium (Staphylococcus aureus). Their water absorbency, water holding capacity, and vertical wicking increased by 55, 28, and 33%, respectively, in comparison with the control sample. Ag@Alg-MC showed burst release in comparison with Ag/Alg-MC. The conventional properties of cotton gauze were greatly improved by the introduced method and it was regarded as a proper candidate for application as an advanced wound dress.     

Novelty of bamboo fabric

Fabric samples using 100% cotton, 100% viscose rayon, 100% regenerated bamboo viscose fibre and cotton/bamboo viscose blend (60/40) were produced and characterised for hand value and health care applications. The present study shows the results of these woven fabrics in terms of antibacterial, absorbency, ultraviolet protection factor (UPF), static characteristics, moisture vapour permeability (MVTR) and handle and dust catchability. Bamboo fabrics (100%) give better results compared to 100% cotton and 100% viscose fabric in terms of antibacterial property and absorbency i.e. wettability. Bamboo fabric (100%) also shows slightly higher moisture vapour transmission rate than cotton fabric. In the case of UPF, 100% cotton and 100% bamboo give excellent-rated UPF. There is no significant difference between these fabric samples in terms of time to lapse half saturated voltage. Total hand value is higher in the case of viscose and bamboo fabric than cotton fabric. The studies also show that breaking load and extension of bamboo gauze bandages are higher than cotton bandages. Sinking time is faster but absorptive capacity is lower in the case of bamboo gauze bandage than cotton gauze bandage.     

海藻酸钙医用敷料与普通棉纱布的性能比较

对海藻酸钙非织造布和机织棉纱布的性能作了分析比较,测试了2种材料在A溶液中的吸湿性、扩散性、透湿性等性能。结果显示,由于2种材料的化学结构和物理结构不同,其性能也有很大的变化,根据它们所具有的性能可被应用于不同种类的伤口。海藻酸钙非织造布的高吸湿性和可阻止液体扩散的性能使它适合用于流血、流脓较多的慢性伤口,而普通棉纱布更适合用于吸收手术过程中产生的血液。     

Microbiological sampling of meat cuts and manufacturing beef by excision or swabbing

Groups of 25 beef or pork loin primal cuts or of pieces of stored or not stored manufacturing beef were sampled by excision and by swabbing with cotton wool, sponge, and gauze. Total aerobic counts, coliforms, and Escherichia coli from each sample were enumerated. Values for the mean log10, log10 mean, and/or the log10 total numbers recovered were calculated for each set of 25 bacterial counts. Those statistics indicated that, for product sampled without storage, swabbing with cotton wool or sponge recovered about 30%, and swabbing with gauze recovered about 10% of the bacteria recovered by excision sampling; but that for product sampled after storage, swabbing with cotton wool or sponge recovered about 50% and swabbing with gauze recovered about 15% of the bacteria recovered by excision sampling. However, the incidences of samples positive for coliforms and E. coli were less for stored than for nonstored product with all methods of sampling. The findings indicate that the conditions of meat surfaces, the handling of product, and the state of the microflora might all affect the numbers of bacteria recovered by any sampling technique. Thus, the relationship between the numbers recovered by excision or any selected swabbing technique may differ for different types of noncomminuted, raw meat product.     

彩色医用纱布的加工

介绍彩色医用纱布的加工过程,筛选特殊染料进行染色以满足药典对医用纱布的要求;针对纱布组织稀疏的特点,优选合理的工艺与设备配置.     

纳米氧化锌的分散及纳米整理剂的制备

研究了纳米氧化锌在水中的稳定分散介质及纳米整理剂的制备和应用。结果表明，对纳米氧化锌进行适当改性和乳化分散，有利于提高纳米水分散液的稳定性，自制水溶性聚氨酯起到良好的助分散作用；自制的纳米整理剂中纳米平均粒径97．01nm；纳米粒子为单核和多核的微囊式结构；纳米整理剂在纤维上呈非均匀浆膜分布；经纳米整理剂（含纳米ZnO10％）整理的纯棉织物，在10次水洗后的UPF等级达到50＋。