CN111455564B - 一种抗菌亲水纳米纤维膜及其制备方法 - Google Patents
一种抗菌亲水纳米纤维膜及其制备方法 Download PDFInfo
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Abstract
本发明提供了一种抗菌亲水纳米纤维膜,所述纤维膜中包括壳聚糖、聚乙烯醇、聚N‑异丙基丙烯酰胺、聚乙烯吡咯烷酮,其中壳聚糖、聚乙烯醇、聚N‑异丙基丙烯酰胺、聚乙烯吡咯烷酮的质量比为0.1‑1:1‑3:10‑20:3‑6。本申请采用溶液喷射纺丝的制备方法得到抗菌亲水纳米纤维膜,其较传统的静电纺丝而言,生产效率提高了3‑5倍,且操作简单,生产过程中安全性能高;纤维中含有抗菌效果的壳聚糖,不仅具有较好的抗菌效果,且使用了温度敏感聚合物PNIPAAm,可以通过改变温度而更加容易地更换敷料,利于医护人员操作,减轻病患痛苦。
Description
技术领域
本发明涉及医用材料,尤其涉及一种抗菌亲水纳米纤维膜。
背景技术
敷料的抗菌性能一定程度上影响了伤口的愈合,具有抗菌效果的纳米纤维膜作为敷料材料拥有很多其他材料所不可比拟的优势,如高的比表面积,孔隙率等,是目前的重要研究方向之一。
溶液喷射纺丝法,作为一种新兴的纺丝技术,在制备纳米纤维方面具有很广阔的应用前景,其以高速气流作为驱动力,聚合物溶液经喷丝孔挤出后在高速气流的驱动下形成聚合物射流,在到达接收装置的过程中,射流被进一步牵伸细化,伴随着溶剂的挥发及不稳定运动,纳米级纤维被收集于接收装置上。该方法具有制备工艺简单、可控、生产效率高等优点,且较传统的静电纺丝而言,避免了生产中的高电压,提高了生产安全性能。
基于此,本申请进行了采用溶液喷射纺丝法制备抗菌亲水纳米纤维膜的相关研究。
发明内容
本申请提供一种抗菌亲水纳米纤维膜及其制备方法,解决了以往通过静电纺丝方法制备纳米纤维膜生产效率不高的问题,提高了生产过程的安全性,得到的纤维膜具有良好的抗菌性能,并且,纺丝原料中添加了对温度敏感的高分子聚合物,可以通过改变温度而更加容易地更换敷料,利于医护人员操作,减轻病患痛苦。
本申请的技术方案如下:
一种基于溶液喷射纺丝方法得到的抗菌亲水纳米纤维膜,所述纤维膜中包括壳聚糖、聚乙烯醇、聚N-异丙基丙烯酰胺、聚乙烯吡咯烷酮,其中壳聚糖、聚乙烯醇、聚N-异丙基丙烯酰胺、聚乙烯吡咯烷酮的质量比为0.1-1:1-3:10-20:3-6。
作为优选,壳聚糖、聚乙烯醇、聚N-异丙基丙烯酰胺、聚乙烯吡咯烷酮的质量比为0.4-0.8:2-3:12-18:4-5。
作为优选,纤维膜中纤维的直径为200-700nm。
作为优选,纤维膜中纤维的直径为400-600nm。
一种制备抗菌亲水纤维纳米膜的制备方法,包括如下步骤:
(1)取一定质量浓度的聚乙烯醇溶液,往其中加入壳聚糖溶液,经搅拌得到聚乙烯醇的壳聚糖溶液;其中聚乙烯醇溶液和壳聚糖溶液的质量比为1-3:3-7;
(2)取聚N-异丙基丙烯酰胺PNIPAAm,将其溶解在溶剂中,其中聚N-异丙基丙烯酰胺的分子量为5000-30000;
(3)将步骤(1)和步骤(2)混合,得到混合溶液,并加入适量的聚乙烯吡咯烷酮PVP;
(4)溶液喷射纺丝:将步骤(3)得到的纺丝溶液装入纺丝液腔体中,并通过计量泵,将纺丝液经喷丝孔挤出,在环形高速气流的作用下,形成纳米纤维,并收集于接收板上,形成纳米纤维膜层。
作为优选,所述步骤(4)中环形高速气流的风压为0.1-0.2MPa。
作为优选,聚N-异丙基丙烯酰胺的分子量为10000-20000。
作为优选,述接收板与喷丝孔之间的距离为20-50cm。
制备得到的抗菌亲水纳米纤维膜可以用于医用抗菌领域。
本申请的有益效果如下:
(1)本申请的制备方法较传统的静电纺丝而言,生产率提高了3-5倍,且操作简单,生产过程中安全性能高;
(2)本申请的纤维中含有抗菌效果的壳聚糖,不仅具有较好的抗菌效果,且使用了温度敏感聚合物PNIPAAm,可以通过改变温度而更加容易地更换敷料,利于医护人员操作,减轻病患痛苦;
(3)通过该方法制备的纳米纤维膜具有较好的纳米效应,纤维直径在200-700nm,使得膜层具有较大的比表面积,提高了抗菌效果,且加入了亲水效果较好的PVP,提高了膜层的亲水性能。
具体实施方式
下面结合具体实施例,进一步阐述本发明。应理解,这些实施例仅用于说明本发明而不用于限制本发明的范围。此外应理解,在阅读了本发明讲授的内容之后,本领域技术人员可以对本发明作各种改动或修改,这些等价形式同样落于本申请所附权利要求书所限定的范围。
实施例1:
一种制备抗菌亲水纤维纳米膜的制备方法,包括如下步骤:
(1)取一定质量浓度的聚乙烯醇溶液,往其中加入壳聚糖溶液,经搅拌得到聚乙烯醇的壳聚糖溶液;其中聚乙烯醇溶液和壳聚糖溶液的质量比为1:3;
(2)取聚N-异丙基丙烯酰胺PNIPAAm,将其溶解在溶剂中,其中聚N-异丙基丙烯酰胺的分子量为5000;
(3)将步骤(1)和步骤(2)混合,得到混合溶液,并加入适量的聚乙烯吡咯烷酮PVP;
(4)溶液喷射纺丝:将步骤(3)得到的纺丝溶液装入纺丝液腔体中,并通过计量泵,将纺丝液经喷丝孔挤出,在环形高速气流的作用下,形成纳米纤维,并收集于接收板上,形成纳米纤维膜层。
所述步骤(4)中环形高速气流的风压为0.1MPa。
述接收板与喷丝孔之间的距离为20cm。
其中壳聚糖、聚乙烯醇、聚N-异丙基丙烯酰胺、聚乙烯吡咯烷酮的质量比为0.1:1:10:3。
纤维膜中纤维的直径为200。
将纤维膜用于医用抗菌领域,对其抗菌性能进行测试,数据如表1所示。
实施例2:
一种制备抗菌亲水纤维纳米膜的制备方法,包括如下步骤:
(1)取一定质量浓度的聚乙烯醇溶液,往其中加入壳聚糖溶液,经搅拌得到聚乙烯醇的壳聚糖溶液;其中聚乙烯醇溶液和壳聚糖溶液的质量比为3:7;
(2)取聚N-异丙基丙烯酰胺PNIPAAm,将其溶解在溶剂中,其中聚N-异丙基丙烯酰胺的分子量为30000;
(3)将步骤(1)和步骤(2)混合,得到混合溶液,并加入适量的聚乙烯吡咯烷酮PVP;
(4)溶液喷射纺丝:将步骤(3)得到的纺丝溶液装入纺丝液腔体中,并通过计量泵,将纺丝液经喷丝孔挤出,在环形高速气流的作用下,形成纳米纤维,并收集于接收板上,形成纳米纤维膜层。
所述步骤(4)中环形高速气流的风压为0.2MPa。
述接收板与喷丝孔之间的距离为50cm。
其中壳聚糖、聚乙烯醇、聚N-异丙基丙烯酰胺、聚乙烯吡咯烷酮的质量比为1:3:20:6。
纤维膜中纤维的直径为450nm。
将纤维膜用于医用抗菌领域,对其抗菌性能进行测试,数据如表1所示。
实施例3:
一种制备抗菌亲水纤维纳米膜的制备方法,包括如下步骤:
(1)取一定质量浓度的聚乙烯醇溶液,往其中加入壳聚糖溶液,经搅拌得到聚乙烯醇的壳聚糖溶液;其中聚乙烯醇溶液和壳聚糖溶液的质量比为2:5;
(2)取聚N-异丙基丙烯酰胺PNIPAAm,将其溶解在溶剂中,其中聚N-异丙基丙烯酰胺的分子量为20000;
(3)将步骤(1)和步骤(2)混合,得到混合溶液,并加入适量的聚乙烯吡咯烷酮PVP;
(4)溶液喷射纺丝:将步骤(3)得到的纺丝溶液装入纺丝液腔体中,并通过计量泵,将纺丝液经喷丝孔挤出,在环形高速气流的作用下,形成纳米纤维,并收集于接收板上,形成纳米纤维膜层。
所述步骤(4)中环形高速气流的风压为0.15MPa。
述接收板与喷丝孔之间的距离为30cm。
其中壳聚糖、聚乙烯醇、聚N-异丙基丙烯酰胺、聚乙烯吡咯烷酮的质量比为0.1:1:12:2。
纤维膜中纤维的直径为700nm。
将纤维膜用于医用抗菌领域,对其抗菌性能进行测试,数据如表1所示。
实施例4:
一种制备抗菌亲水纤维纳米膜的制备方法,包括如下步骤:
(1)取一定质量浓度的聚乙烯醇溶液,往其中加入壳聚糖溶液,经搅拌得到聚乙烯醇的壳聚糖溶液;其中聚乙烯醇溶液和壳聚糖溶液的质量比为1:1;
(2)取聚N-异丙基丙烯酰胺PNIPAAm,将其溶解在溶剂中,其中聚N-异丙基丙烯酰胺的分子量为15000;
(3)将步骤(1)和步骤(2)混合,得到混合溶液,并加入适量的聚乙烯吡咯烷酮PVP;
(4)溶液喷射纺丝:将步骤(3)得到的纺丝溶液装入纺丝液腔体中,并通过计量泵,将纺丝液经喷丝孔挤出,在环形高速气流的作用下,形成纳米纤维,并收集于接收板上,形成纳米纤维膜层。
所述步骤(4)中环形高速气流的风压为0.18MPa。
述接收板与喷丝孔之间的距离为50cm。
其中壳聚糖、聚乙烯醇、聚N-异丙基丙烯酰胺、聚乙烯吡咯烷酮的质量比为1:2:18:5。
纤维膜中纤维的直径为600nm。
对抗菌亲水纳米纤维膜进行抑菌圈评价:
表1抗菌亲水纳米纤维膜的抑菌圈评价
大肠杆菌8099 | 金黄色葡萄球菌ATCC6538 | |
实施例1 | >1mm | >1mm |
实施例2 | >1mm | >1mm |
实施例3 | >1mm | >1mm |
实施例4 | >1mm | >1mm |
通过抑菌圈的数据分析,表明该纤维具有较好的抗菌消炎效果。
以上所述仅为本发明的实施例,并非因此限制本发明的专利范围,凡是利用本发明说明书内容所作的等效结构或等效流程变换,或直接或间接运用在其他相关的技术领域,均同理包括在本发明的专利保护范围内。
Claims (1)
1.一种基于溶液喷射纺丝方法溶喷壳聚糖-聚乙烯醇-聚N-异丙基丙烯酰胺-聚乙烯吡咯烷酮四元体系而得到的抗菌亲水纳米纤维膜,其特征在于,所述纤维膜中的壳聚糖、聚乙烯醇、聚N-异丙基丙烯酰胺、聚乙烯吡咯烷酮的质量比为0.4-0.8:2-3:12-18:4-5,纤维膜中纤维的直径为400-600nm,所述的抗菌亲水纤维纳米膜的制备方法,包括如下步骤:
(1)取一定质量浓度的聚乙烯醇溶液,往其中加入壳聚糖溶液,经搅拌得到聚乙烯醇的壳聚糖溶液;其中聚乙烯醇溶液和壳聚糖溶液的质量比为1-3:3-7;
(2)取聚N-异丙基丙烯酰胺PNIPAAm,将其溶解在溶剂中,其中聚N-异丙基丙烯酰胺的分子量为5000-30000;
(3)将步骤(1)和步骤(2)混合,得到混合溶液,并加入适量的聚乙烯吡咯烷酮PVP;
(4)溶液喷射纺丝:将步骤(3)得到的纺丝溶液装入纺丝液腔体中,并通过计量泵,将纺丝液经喷丝孔挤出,在环形高速气流的作用下,形成纳米纤维,并收集于接收板上,形成纳米纤维膜,所述步骤(4)中环形高速气流的风压为0.1-0.2MPa,聚N-异丙基丙烯酰胺的分子量为10000-20000,所述接收板与喷丝孔之间的距离为20-50cm。
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