CN114875717B - 一种可降解高阻菌医疗防护用纳米透析纸的制备方法 - Google Patents

一种可降解高阻菌医疗防护用纳米透析纸的制备方法 Download PDF

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CN114875717B
CN114875717B CN202210464841.2A CN202210464841A CN114875717B CN 114875717 B CN114875717 B CN 114875717B CN 202210464841 A CN202210464841 A CN 202210464841A CN 114875717 B CN114875717 B CN 114875717B
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李萍萍
杨子杰
徐成
韩守一
施丹阳
袁其栋
裘佳欣
张凯勇
方驰安
周雨萍
郭大亮
沙力争
常紫阳
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Zhejiang Lover Health Science and Technology Development Co Ltd
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Abstract

本发明公开了一种可降解高阻菌医疗防护用纳米透析纸的制备方法，包括如下步骤：a、配制浆料组分，按质量份取10‑20份的纤维素纤维、5‑10份的纤维素丝光化纤维、8‑12份粘胶纤维和3‑8份的聚乳酸纤维；b、将纤维素纤维、纤维素丝光化纤维、粘胶纤维和聚乳酸纤维放入打浆机中打浆制得浆料，c、对浆料进行抄造形成透析纸成品。本发明制备的透析纸可降解，具有高阻菌和高透气性能。

Description

一种可降解高阻菌医疗防护用纳米透析纸的制备方法
技术领域
本发明涉及透析纸制备技术领域，特别是一种可降解高阻菌医疗防护用纳米透析纸的制备方法。
背景技术
国内用于无菌医疗防护包装的纸塑复合袋的阻菌透析面为透析功能纸，是一种纤维素纤维制备的纤维素膜，可生物降解，对环境友好，但由于制备关键工艺技术的水平限制，跟占据国内主流产品高端市场的法国Arjowiggins公司的同类产品相比，其性能均有一定的差距，尤其是透析功能纸的透气度难以达到高性能产品的水平，这就大大影响了灭菌选择性和灭菌效率。浙江省是中国透析功能纸的主产地，但产品性能基本处于中低水平，竞争力低，所以无论从保障国内该领域的供应链产业链的安全性和稳定性，还是提高市场竞争力出发，都急需通过技术创新开发出高性能透析功能纸，用于无塑料膜的透析功能纸袋，并实现100％可降解性，以取代进口全塑或纸塑复合产品。
发明内容
本发明的目的在于，提供一种可降解高阻菌医疗防护用纳米透析纸的制备方法。本发明制备的透析纸可降解，具有高阻菌和高透气性能。
本发明的技术方案：一种可降解高阻菌医疗防护用纳米透析纸的制备方法，包括如下步骤：
a、配制浆料组分，按质量份取10-20份的纤维素纤维、5-10份的纤维素丝光化纤维、8-12份粘胶纤维和3-8份的聚乳酸纤维；
b、将纤维素纤维、纤维素丝光化纤维、粘胶纤维和聚乳酸纤维放入打浆机中打浆制得浆料；
c、对浆料进行抄造形成透析纸成品。
上述的可降解高阻菌医疗防护用纳米透析纸的制备方法，步骤a中，所述浆料组分包括15份的纤维素纤维、8份的纤维素丝光化纤维、10份粘胶纤维和5份的聚乳酸纤维。
前述的可降解高阻菌医疗防护用纳米透析纸的制备方法，步骤b中，所述打浆机的打浆时间为10-30分钟，打浆度为20-25°SR。
前述的可降解高阻菌医疗防护用纳米透析纸的制备方法，步骤c中，将浆料用长网纸机抄造，再用施胶液表面施胶，然后干燥形成医用透析纸成品。
前述的可降解高阻菌医疗防护用纳米透析纸的制备方法，所述施胶液为中性胶AKD、湿强剂和助留剂的混合，所述中性胶AKD的质量百分比为60％～80％，所述湿强剂的质量百分比为10％～20％，所述助留剂的质量百分比为10％～20％。
前述的可降解高阻菌医疗防护用纳米透析纸的制备方法，所述施胶液中中性胶AKD的质量百分比为70％，所述湿强剂的质量百分比为15％，所述助留剂的质量百分比为15％。
前述的可降解高阻菌医疗防护用纳米透析纸的制备方法，所述的湿强剂为聚酰胺环氧氯丙烷，固含量为12.5％。
前述的可降解高阻菌医疗防护用纳米透析纸的制备方法，所述助留剂为阳离子聚丙烯酰胺。
前述的可降解高阻菌医疗防护用纳米透析纸的制备方法，所述施胶液表面施胶的施胶量为10-15g/m2。
与现有技术相比，本发明以可生物降解的纤维素纤维、纤维素丝光化纤维、粘胶纤维、聚乳酸(PLA)纤维作为原料，通过优化各纤维的配比，实现纤维粗细搭配，从纤维网络层面构建透析纸合理的孔隙结构，控制孔径大小和分布范围，从最基本的原料配方上保证高性能透析功能纸需要的透气性和阻菌性等关键性能。此外，本发明优化了打浆工艺参数和施胶工艺，其中在打浆过程中，各纤维经过吸水润涨与细纤维化，两端帚化，纤维表面分丝从而分离出大部分微细纤维，使得抄造过程中，纤维间结合更紧密，所抄纸样孔隙度降低，但数量增加，从而阻碍了细菌透过并保证了透气度，本发明的施胶液在中性或碱性条件下，中性胶AKD可以直接与纤维素纤维上的活泼－OH基团反应生成牢固的β-酮脂型共价键，大大增强了纸样抗水效果，同时有效阻止了细菌透过，使其具有良好的抗菌性。
具体实施方式
下面结合实施例对本发明作进一步说明，但并不作为对本发明限制的依据。
实施例1：一种可降解高阻菌医疗防护用纳米透析纸的制备方法，包括如下步骤：
a、配制浆料组分，按质量份取18份的纤维素纤维、6份的纤维素丝光化纤维、10份粘胶纤维和3份的聚乳酸纤维；
b、将纤维素纤维、纤维素丝光化纤维、粘胶纤维和聚乳酸纤维放入打浆机中打浆制得浆料，其中打浆机的打浆时间为25分钟，打浆度为21°SR。本实施中以实验室中的ZQS2-23L型打浆机进行打浆，在工业上可以根据实际需要进行选择。
c、将浆料用长网纸机抄造，再用施胶液表面施胶，然后干燥形成医用透析纸成品。所述施胶液为中性胶AKD、湿强剂和助留剂的混合，所述中性胶AKD的质量百分比为60％，所述湿强剂的质量百分比为25％，所述助留剂的质量百分比为15％，所述的湿强剂为聚酰胺环氧氯丙烷，固含量为12.5％，可通过市售获得，所述助留剂为阳离子聚丙烯酰胺，可通过市售获得，所述施胶液表面施胶的施胶量为12g/m2。
实施例2：一种可降解高阻菌医疗防护用纳米透析纸的制备方法，包括如下步骤：
a、配制浆料组分，按质量份取12份的纤维素纤维、10份的纤维素丝光化纤维、8份粘胶纤维和4份的聚乳酸纤维；
b、将纤维素纤维、纤维素丝光化纤维、粘胶纤维和聚乳酸纤维放入打浆机中打浆制得浆料，其中打浆机的打浆时间为15分钟，打浆度为23°SR。本实施中以实验室中的ZQS2-23L型打浆机进行打浆，在工业上可以根据实际需要进行选择。
c、将浆料用长网纸机抄造，再用施胶液表面施胶，然后干燥形成医用透析纸成品。所述施胶液为中性胶AKD、湿强剂和助留剂的混合，所述中性胶AKD的质量百分比为75％，固含量＞15％，所述湿强剂的质量百分比为10％，所述助留剂的质量百分比为15％，所述的湿强剂为聚酰胺环氧氯丙烷，固含量为12.5％，所述助留剂为阳离子聚丙烯酰胺，所述施胶液表面施胶的施胶量为15g/m2。
实施例3：一种可降解高阻菌医疗防护用纳米透析纸的制备方法，包括如下步骤：
a、配制浆料组分，按质量份取12份的纤维素纤维、10份的纤维素丝光化纤维、8份粘胶纤维和4份的聚乳酸纤维；
b、将纤维素纤维、纤维素丝光化纤维、粘胶纤维和聚乳酸纤维放入打浆机中打浆制得浆料，其中打浆机的打浆时间为15分钟，打浆度为23°SR。本实施中以实验室中的ZQS2-23L型打浆机进行打浆，在工业上可以根据实际需要进行选择。
c、将浆料用长网纸机抄造，再用施胶液表面施胶，然后干燥形成医用透析纸成品。所述施胶液为中性胶AKD、湿强剂和助留剂的混合，所述中性胶AKD的质量百分比为70％，固含量＞15％，所述湿强剂的质量百分比为15％，所述助留剂的质量百分比为15％，所述的湿强剂为聚酰胺环氧氯丙烷，固含量为12.5％，所述助留剂为阳离子聚丙烯酰胺，所述施胶液表面施胶的施胶量为15g/m2。
实施例4：一种可降解高阻菌医疗防护用纳米透析纸的制备方法，包括如下步骤：
a、配制浆料组分，按质量份取20份的纤维素纤维、6份的纤维素丝光化纤维、12份粘胶纤维和3份的聚乳酸纤维；
b、将纤维素纤维、纤维素丝光化纤维、粘胶纤维和聚乳酸纤维放入打浆机中打浆制得浆料，其中打浆机的打浆时间为30分钟，打浆度为25°SR。本实施中以实验室中的ZQS2-23L型打浆机进行打浆，在工业上可以根据实际需要进行选择。
c、将浆料用长网纸机抄造，再用施胶液表面施胶，然后干燥形成医用透析纸成品。所述施胶液为中性胶AKD、湿强剂和助留剂的混合，所述中性胶AKD的质量百分比为80％，固含量＞15％，所述湿强剂的质量百分比为15％，所述助留剂的质量百分比为5％，所述的湿强剂为聚酰胺环氧氯丙烷，固含量为12.5％，所述助留剂为阳离子聚丙烯酰胺，所述施胶液表面施胶的施胶量为10g/m2。
实施例5：一种可降解高阻菌医疗防护用纳米透析纸的制备方法，包括如下步骤：
a、配制浆料组分，按质量份取12份的纤维素纤维、10份的纤维素丝光化纤维、12份粘胶纤维和3份的聚乳酸纤维；
b、将纤维素纤维、纤维素丝光化纤维、粘胶纤维和聚乳酸纤维放入打浆机中打浆制得浆料，其中打浆机的打浆时间为22分钟，打浆度为24°SR。本实施中以实验室中的ZQS2-23L型打浆机进行打浆，在工业上可以根据实际需要进行选择。
c、将浆料用长网纸机抄造，再用施胶液表面施胶，然后干燥形成医用透析纸成品。所述施胶液为中性胶AKD、湿强剂和助留剂的混合，所述中性胶AKD的质量百分比为70％，固含量＞15％，所述湿强剂的质量百分比为10％，所述助留剂的质量百分比为20％，所述的湿强剂为聚酰胺环氧氯丙烷，固含量为12.5％，所述助留剂为阳离子聚丙烯酰胺，所述施胶液表面施胶的施胶量为12g/m2。
对比例：市售国产透析纸。
透析纸的阻菌性测试
菌种培养：相同条件下配置多个培养基，用于培养枯草杆菌，将培养好的菌种稀释到107cfu/ml，将实施例1-5制得透析纸和对比例的透析纸裁成变成为5cm的正方形，灭菌备用。将灭菌样品转移至无菌平皿，取107cfu/ml的枯草杆菌菌悬液5滴，每滴0.1ml，均匀滴在样品外表面，互不接触，在温度20-25℃，相对湿度40-50％条件下干燥6-16h。干燥完成后将染菌样片的内表面完全平铺于营养琼脂培养基表面，5s-6s后将样片丢弃；营养琼脂培养基于37℃培养，然后在24h和15天两个时间节点来观察细菌生长情况，在阻菌性纸样检测记录表中记录下所生长的细菌数，结果如下表所示：
枯草杆菌数/个(24h) 枯草杆菌数/个(15D)
实施例1 0 515
实施例2 0 562
实施例3 0 506
实施例4 0 532
实施例5 0 561
对比例 102 3384
表1
从表1可以看出，本发明制备的透析纸具有较好的阻菌性能，在24h小时能可以实现完全阻菌的效果，而对比例中会有枯草杆菌数的生成。在15天的时间节点上，本发明制备的透析纸的枯草杆菌个数远远的小于对比例中常规的透析纸，这进一步的说明了本发明具有良好的阻菌性，其中实施例3中工艺参数可以实现最优的技术效果。
进一步地，申请人以异丙醇(IPA)作湿润剂，通过孔径仪，采用泡点法进行检测本发明实施例1-5和对比例中透析纸的孔隙结构，其结果如下表2所示：
最大孔径um 最小孔径um 平均孔径um
实施例1 19.56 1.62 7.65
实施例2 19.45 1.56 7.54
实施例3 18.98 1.12 7.14
实施例4 19.19 1.35 7.92
实施例5 19.01 1.65 7.73
对比例 26.76 5.65 15.65
表2
从表1可以看出，本发明制备的透析纸具有较小的孔径，其中平均孔径相比对比例减少了一半以上。本发明以可生物降解的纤维素纤维、纤维素丝光化纤维、粘胶纤维、聚乳酸(PLA)纤维作为原料，通过优化各纤维的配比，实现纤维粗细搭配，从纤维网络层面构建透析纸合理的孔隙结构，控制孔径大小和分布范围，从最基本的原料配方上保证高性能透析功能纸需要的透气性和阻菌性等关键性能。本发明优化了打浆工艺参数和施胶工艺，其中在打浆过程中，各纤维经过吸水润涨与细纤维化，两端帚化，纤维表面分丝从而分离出大部分微细纤维，使得抄造过程中，纤维间结合更紧密，所抄纸样孔隙度降低，但数量增加，从而阻碍了细菌透过并保证了透气度，本发明的施胶液在中性或碱性条件下，中性胶AKD可以直接与纤维素纤维上的活泼－OH基团反应生成牢固的β-酮脂型共价键，大大增强了纸样抗水效果，同时有效阻止了细菌透过，使其具有良好的抗菌性。

Claims (6)

1.一种可降解高阻菌医疗防护用纳米透析纸的制备方法，其特征在于：包括如下步骤：
a、配制浆料组分，按质量份取10-20份的纤维素纤维、5-10份的纤维素丝光化纤维、8-12份粘胶纤维和3-8份的聚乳酸纤维；
b、将纤维素纤维、纤维素丝光化纤维、粘胶纤维和聚乳酸纤维放入打浆机中打浆制得浆料；
c、对浆料进行抄造形成透析纸成品；
步骤b中，所述打浆机的打浆时间为10-30分钟，打浆度为20-25°SR；
步骤c中，将浆料用长网纸机抄造，再用施胶液表面施胶，然后干燥形成医用透析纸成品；
所述施胶液为中性胶AKD、湿强剂和助留剂的混合，所述中性胶AKD的质量百分比为60％～80％，所述湿强剂的质量百分比为10％～20％，所述助留剂的质量百分比为10％～20％。
2.根据权利要求1所述的可降解高阻菌医疗防护用纳米透析纸的制备方法，其特征在于：步骤a中，所述浆料组分包括15份的纤维素纤维、8份的纤维素丝光化纤维、10份粘胶纤维和5份的聚乳酸纤维。
3.根据权利要求1所述的可降解高阻菌医疗防护用纳米透析纸的制备方法，其特征在于：所述施胶液中中性胶AKD的质量百分比为70％，所述湿强剂的质量百分比为15％，所述助留剂的质量百分比为15％。
4.根据权利要求3所述的可降解高阻菌医疗防护用纳米透析纸的制备方法，其特征在于：所述的湿强剂为聚酰胺环氧氯丙烷，固含量为12.5％。
5.根据权利要求3所述的可降解高阻菌医疗防护用纳米透析纸的制备方法，其特征在于：所述助留剂为阳离子聚丙烯酰胺。
6.根据权利要求1所述的可降解高阻菌医疗防护用纳米透析纸的制备方法，其特征在于：所述施胶液表面施胶的施胶量为10-15g/m2。
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