CN114108303B - 一种天然抑菌医用彩棉漂白纱布整理工艺 - Google Patents
一种天然抑菌医用彩棉漂白纱布整理工艺 Download PDFInfo
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Abstract
本发明公开了一种天然抑菌医用彩棉漂白纱布的整理工艺,包括退浆精练一浴法工艺及氯氧双漂脱脂工艺,退浆精练一浴法配方主要组成为:α‑淀粉酶等,浴比为1:15‑20,pH值7‑8,煮练温度为65‑75℃,煮练时间60‑70min。氯氧双漂脱脂工艺配方主要组成为:次氯酸钠、15%H2O2 20%等,氯漂的浴比为1:10‑15,漂白时间60‑65min;浴比为1:15‑20,漂白时间60‑70min,漂白温度85‑90℃。将彩棉漂白纱布经过抗菌实验测试及大鼠创伤修复实验,结果表明,其对金黄色葡萄球菌、大肠杆菌、白色念珠菌三个菌种的抑菌率高达99%左右及以上,并且可以减少大鼠伤口的感染,促进创面愈合。
Description
技术领域
本发明涉及医用纱布领域,具体涉及一种天然抑菌医用彩棉漂白纱布整理工艺。
背景技术
目前的医用敷料从医疗器械管理类别来讲,可分为可吸收外科敷料、不可吸收外科敷料、创面敷料、包扎敷料,它们作为包扎伤口的医疗用品,用以覆盖疮、伤口等。随着对伤口愈合过程的病理生理的深入研究,人们对整个愈合过程的理解也越来越深刻,这也加速了医用敷料的不断改进与发展。
目前,脱脂棉纱布敷料仍是临床上使用最多、范围最广的敷料,它最大的作用是能够快速吸收血液或伤口渗出液、覆盖伤口、抵御部分细菌进入伤口处等,但脱脂棉敷料又具有明显的缺陷,它不具备有效的抗感染功能等,易发生感染。目前很多学者使用无机抗菌、有机抗菌剂及复合抗菌剂通过化学处理添加在棉或合成纤维基底上来制备具有抗菌功能的纱布敷料:吴疆等人在专利CN201811115484.9公开了一种负载金属离子的壳聚糖基纱布敷料及其制备方法,该纱布敷料负载的金属离子可根据需要添加一种或多种,直接应用于创面。王栋等人在专利CN201710337591.5公开了一种防粘连吸湿医用酸敏感抗菌纱布及其制备方法,将脱脂棉纱布浸泡在抗菌中药提取液中形成水凝胶层制得。这些通过化学方法在脱脂棉纱布上添加抗菌物质的方式,不仅生产工艺较复杂、成本较高,且化学成分对人体健康的潜在影响犹未可知。
天然彩棉属于棉类的一个分支,通过自然种植的方式获取,自古以来就存在于自然界,参与到人类生产生活中。2011年,有学者发现并报道,天然彩色棉具有良好的抗菌及抗氧化性能,这使其应用在纱布敷料领域成为可能。天然彩棉的抑菌性是由于纤维中腔内含有原花青素等抑菌物质,但在未进行煮练漂的整理工序时,彩棉纤维表皮层的蜡质果胶形成致密层,抑菌物质不能从内部迁移到纤维表面,此时彩棉纤维抑菌性能不能很好体现;在通过煮练漂的整理工艺后,能去除彩棉纤维表皮层的蜡质果胶层,此时彩棉在液态环境下,中腔内的抑菌物质可以迁移到表面并产生作用,彩棉纤维的抑菌性得以充分体现。同时,对彩棉进行漂白处理,将彩棉的色素去除,使纱布在视觉上更洁净、美观。
发明内容
本发明提供了一种天然抑菌医用彩棉纱布敷料的整理工艺,能使天然彩棉纤维的抑菌性能得到充分释放,整理工艺依次包括以下步骤:
a).按照清棉工序→梳棉工序→精梳工序→一混三并并条工序→粗纱工序→细纱工序→喷气涡流纺纺纱工序→络筒工序→整经工序→无PVA淀粉浆料浆纱工序→穿经工序→织造工序,制作出彩棉纱布前序织物。
b).退浆精练一浴法工艺:将步骤a)制得的彩棉纱布通过布辊运送到退浆精练装置中,其中退浆精练处理液的工艺配方为:α-淀粉酶为2.5-3g/L,葡萄糖氧化酶为2.5-3g/L,纤维素酶为2.5-3g/L,原果胶酶(PPASE)为2.5-3g/L,D-苎烯为1-1.5g/L,精练剂GX-2021为1-1.5g/L,浴比为1:15-20,pH值为7-8,煮练温度为65-75℃,煮练时间60-70min。混合酶处理工艺具有专一性和高效性。
c).氯氧双漂脱脂工艺:将步骤b)后得到的彩棉纱布在室温条件下进行氯漂,配方为:次氯酸钠为1.8-2.3g/L,使用纯碱调节pH至9-10,浴比为1:10-15,漂白时间为60-65min。氯漂完成后进行酸洗,然后进行氧漂,配方为:质量浓度为15%的H2O2为18-22%,36°Be硅酸钠为10-12%,渗透剂JFC为1.5-2%,增白剂ZB-100为0.1-0.2%,其它为水,使用氢氧化钠调节pH至10-11,浴比为1:15-20,漂白时间60-70min,漂白温度85-90℃。
d).将步骤c)后得到的彩棉漂白纱布再依次通过机械分条工序→裁剪工序→检测工序→包装工序→灭菌工序制得彩棉漂白纱布成品。
本发明的有益效果:
1、原料彩棉可以通过自然种植方式获取,具有可直接加工性,且易降解,适合大规模生产。生产纱布的纺纱、织造、后整理工艺流程绿色环保、能耗低、效率高。
2、彩棉具有天然的抑菌性能,能够减少伤口的细菌感染。
3、能有效加快伤口愈合。
附图说明
图1为彩棉漂白纱布生产流程图;
图2为彩棉漂白纱布单纱的扫描电子显微镜图;
图3为彩棉漂白纱布的成品图;
图4为大鼠伤口愈合率随时间变化曲线;
图5为大鼠伤口的炎症细胞数量变化图;
图6为大鼠伤口的新生血管数量变化图;
图7为大鼠伤口的肉芽组织面积变化图;
图8为大鼠伤口的胶原蛋白占据面积比变化图。
具体实施方式
本发明的工艺流程如图1所示,具体工艺描述如下:
将彩棉纤维依次进行清棉、梳棉、精梳、一混三并并条、粗纱、细纱的工序,通过涡流纺技术制成纱线,再经络筒、整经、无PVA淀粉上浆、穿经、织造的工序织成彩棉纱布。
将彩棉纱布进行退浆精练一浴法处理,工艺配方为:α-淀粉酶为2.5-3g/L,葡萄糖氧化酶为2.5-3g/L,纤维素酶为2.5-3g/L,原果胶酶(PPASE)为2.5-3g/L,D-苎烯为1-1.5g/L,精练剂GX-2021为1-1.5g/L,浴比为1:15-20,pH值为7-8,煮练温度为65-75℃,煮练时间为60-70min,水洗后进行漂白。
在此过程中,α-淀粉酶的作用是将淀粉浆料水解为最终产物葡萄糖,再通过葡萄糖氧化酶将葡萄糖分解形成葡萄糖酸与下一步所用的H2O2。此时彩棉纱线表面的淀粉浆料已经去除,在纤维素酶、原果胶酶、D-苎烯、精练剂的共同作用下,彩棉纤维表面的蜡质、果胶、棉籽壳等杂质被分解,纤维内外均产生膨胀,中腔变小,如图2所示,为彩棉漂白纱布单纱的扫描电子显微镜图。此时,纤维的吸液性提升,在液态环境下,内部抑菌物质在连续液相界面中更容易迁移释放。在退浆完成后,把坯布进行水洗,将含有混合酶的废水使用纳米吸附剂与聚乳酸超滤膜进行过滤并将混合酶回收。
氯氧双漂脱脂:将水洗后的彩棉纱布在室温条件下进行氯漂,工艺配方为:次氯酸钠为1.8-2.3g/L,使用纯碱调节pH至9-10,浴比为1:10-15,漂白时间为60-65min。氯漂完成后进行酸洗,然后进行氧漂,配方为:15%H2O2为18-22%,36°Be硅酸钠为10-12%,渗透剂JFC为1.5-2%,增白剂ZB-100为0.1-0.2%,其余为水,使用氢氧化钠调节pH至10-11,浴比为1:15-20,漂白时间为60-70min,漂白温度为85-90℃。在漂白完成后,进行水洗,制得彩棉漂白纱布。
彩棉纱布在生长过程中有一种类似酸性染料的色素伴生物产生,彩棉色素的主要成分为原花青素(缩合单宁),在漂白过程中,由于经过退浆精练的工序,纤维表面的蜡质果胶去除,漂白液沿着原纤微孔通道进入到纤维内部,将彩棉中腔内含有酚羟基的原花青素氧化,色素的分子变成为无色,但是抑菌性依旧保留。在次氯酸钠及过氧化氢的作用下,色素去除,柔软度增加、白度提高,在漂白完成后,进行水洗。
将得到的彩棉漂白纱布再依次通过机械分条工序→裁剪工序→检测工序→包装工序→灭菌工序制得彩棉漂白纱布成品,如图3所示。
所述的彩棉漂白纱布,其经纬纱细度为40s,经密为192根/10cm,纬密为148根/10cm。彩棉纱布敷料在酸碱度测试中溶液不呈红色,表面活性物质测试中的泡沫高度为1.5mm,干燥失重率为0.39%,下沉时间为4.39s。其经向断裂强力为181.3N,纬向断裂强力为123.6N,经向断裂伸长率为8.08%,纬向断裂伸长率为14.71%。抗弯刚度为0.0544cN·cm2/cm,液体吸收倍率为476%,透气性为2021.78mm/s。
所述的彩棉漂白纱布,按照GB/T 20944.3-2008《纺织品抗菌性能的评价第3部分:振荡法》检测,对金黄色葡萄球菌、大肠杆菌、白色念珠菌三个菌种的抑菌率分别达到99.82%、99.38%、98.35%。
彩棉纱布能够加快促进伤口愈合。在大鼠创伤修复实验中,设置脱脂棉纱布为对照组,彩棉漂白纱布为敷料组,分别用对照组和敷料组覆盖住大鼠伤口。在进行大鼠创面愈合实验后,伤口组织通过HE染色、Masson染色及CD31染色,实验结果表明,在第14天时,彩棉漂白纱布与传统脱脂棉纱布相比,大鼠伤口的愈合率提升了20.56%,如图4所示为大鼠伤口愈合率随时间变化曲线;伤口的炎症细胞数量减少率为12.93%,如图5所示为大鼠伤口的炎症细胞数量变化图;伤口的新生血管数量增加率为6.88%,如图6所示为大鼠伤口的新生血管数量变化图;伤口的肉芽组织面积增加率为10.76%,如图7所示为大鼠伤口的肉芽组织面积变化图;胶原蛋白占据面积比增加率为33.71%,如图8所示为大鼠伤口的胶原蛋白占据面积比变化图。
综上,本发明公开了一种天然抑菌医用彩棉漂白纱布的整理工艺,能使彩棉纱布的纤维能更好地释放出抑菌性能。彩棉纱布在经过本发明的退浆精练一浴法工艺及氯氧双漂脱脂工艺后,对彩棉漂白纱布进行抗菌实验测试,结果表明,彩棉纱布敷料对金黄色葡萄球菌、大肠杆菌、白色念珠菌三个菌种的抑菌率高达99%左右及以上。对彩棉漂白纱布进行大鼠创伤修复实验,结果表明,彩棉纱布敷料可以减少大鼠伤口的感染,并促进创面愈合。
以上实施例仅为最佳举例,而并非是对本发明的实施方式的限定。除上述实施例外,本发明还有其他实施方式。凡采用等同替换或等效变换形成的技术方案,均落在本发明要求的保护范围。
Claims (2)
1.一种天然抑菌医用彩棉漂白纱布整理工艺,其特征在于该工艺包括以下步骤:
步骤1、制作彩棉纱布前序织物;
步骤2、将彩棉纱布运送到退浆精练装置中,先去除彩棉纱线表面的淀粉浆料,然后分解彩棉纤维表面的蜡质、果胶和棉籽壳;
步骤3、将步骤2退浆精练得到的彩棉纱布在室温条件下依次进行氯漂、酸洗和氧漂,用于去除色素,增加柔软度和提高白度;
步骤4、将步骤3处理后得到的彩棉漂白纱布再依次通过机械分条、裁剪、检测、包装、灭菌工序制得彩棉漂白纱布成品;
退浆精练的工艺配方为:α-淀粉酶为2.5-3g/L,葡萄糖氧化酶为2.5-3g/L,纤维素酶为2.5-3g/L,原果胶酶为2.5-3g/L,D-苎烯为1-1.5g/L,精练剂GX-2021 为1-1.5g/L,浴比为1:15-20,pH值为7-8,煮练温度为65-75℃,煮练时间为60-70min;
氯漂的工艺配方为:次氯酸钠为1.8-2.3g/L,使用纯碱调节pH至9-10,浴比为1:10-15,漂白时间为60-65min;
氧漂的工艺配方为:质量浓度为15%的H2O2为18-22%,36°Be硅酸钠为10-12%,渗透剂JFC为1.5-2%,增白剂ZB-100为 0.1-0.2%,使用氢氧化钠调节pH至10-11,浴比为1:15-20,漂白时间为60-70min,漂白温度为85-90℃。
2.根据权利要求1所述的一种天然抑菌医用彩棉漂白纱布整理工艺,其特征在于:在退浆完成后,把坯布进行水洗,将含有混合酶的废水使用纳米吸附剂与聚乳酸超滤膜进行过滤并将混合酶回收。
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