CN116356569B - 一种抗菌织物及其制备方法 - Google Patents
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Abstract
本发明公开一种抗菌织物及其制备方法,涉及新材料技术领域。本发明公开的抗菌织物的制备方法为:将0.1~30份聚乳酸添加到100份溶剂中,在室温~100℃下,以200~1000rpm的转速搅拌溶解0.5~5h,得到质量浓度为0.1~30%的聚乳酸溶液;将0.01~20份抗菌纳米粒子添加到上述聚乳酸溶液中,搅拌,得到混合溶液;将织物浸泡到上述混合溶液中,静置或以低于2000rpm的转速搅拌0.01~12h,将织物取出晾干,得到抗菌织物。本发明提供抗菌织物制备方法效率高,成本低,工艺简单,制备的抗菌织物具有良好的抗菌性能,适合批量化生产。
Description
技术领域
本发明涉及新材料技术领域,尤其是涉及一种抗菌织物及其制备方法。
背景技术
佩戴个人防护装备已被证明是阻止病原体传播的有效方法之一,然而现有医用防护纤维材料只能通过阻隔病原微生物达到防护效果,不能实现主动灭活病原微生物功能。如果佩戴者的手或其他身体部位接触到受污染的个人防护装备,或者废弃后处理不当,很容易发生继发感染。通过抗菌纳米材料的引入,可实现纤维材料的主动防护性。
目前研发抗菌医用防护纤维材料的主流策略是将抗菌纳米材料通过气相沉积、蒸发、溅射和喷涂等方式负载到纤维材料上,如专利CN111549521A、CN103015166B等。但抗菌涂层的粘附性低、机械强度弱、粘接能力有限(如弱静电相互作用)等缺陷,限制了医用防护纤维材料的耐久使用性。因此,亟需开发具有良好抗菌性能和高稳定性的抗菌织物来扩展其应用范围。
发明内容
本发明的目的在于提供一种具有良好抗菌性能的抗菌织物,该抗菌织物的制备工艺简单,制备效率高,成本低,适合批量化生产。
为了实现本发明的目的,本发明提供的抗菌织物的制备方法,按重量份数计,具体包括以下步骤:
(1)聚乳酸溶液配制:将0.1~30份聚乳酸添加到100份溶剂中,在室温~100℃下,以200~1000rpm的转速搅拌溶解0.5~5h,得到质量浓度为0.1~30%的聚乳酸溶液。
(2)混合溶液配制:将0.01~20份抗菌纳米粒子添加到上述聚乳酸溶液中,搅拌0.1~12h,得到混合溶液。
(3)抗菌织物制备:将织物浸泡到上述混合溶液中,一段时间后,将织物取出晾干,得到抗菌织物。
进一步的,所述步骤(1)中,所述聚乳酸为左旋聚乳酸和右旋聚乳酸共混物,其中,所述右旋聚乳酸占聚乳酸总质量的10~50%。
进一步的,所述步骤(1)中,所述溶剂为碳酸二甲酯、二氯甲烷或三氯甲烷中的任意一种或两种及以上的组合物。
进一步的,所述步骤(2)中,所述抗菌纳米粒子为异质结构氧化锌-银纳米粒子、氧化亚铜纳米粒子、氧化铜纳米粒子、三氧化二铁纳米粒子、四氧化三铁纳米粒子、氧化锌纳米粒子、硫化锌纳米粒子、二氧化钛纳米粒子、银纳米粒子或氧化铋纳米粒子中的任意一种或两种及以上的组合物。
进一步的,所述步骤(3)中,所述织物为绵纶织物、维纶织物、涤纶织物、丙纶织物、氨纶织物、聚乙烯纤维织物、棉纤维织物中的任意一种或两种及以上的组合。
进一步的,所述步骤(3)中,所述浸泡方法为静置或以低于2000rpm的转速搅拌0.01~12h。
本发明还提供了采用上述抗菌织物的制备方法制得的抗菌织物。
本发明取得了以下有益效果:
1、本发明借助适当比例左旋聚乳酸和右旋聚乳酸形成的立构复合交联网络,可将纳米粒子稳定且均匀分散在织物表面上,并且立构交联网络能增强抗菌纳米粒子与纤维织物表面的结合力。
2、本发明制备的抗菌织物具有显著高抗菌性能,在医疗器械、军工、家纺、医用防护等领域有着广阔的应用前景。
3、本发明制备的抗菌织物所用聚乳酸/抗菌纳米粒子混合溶液体系适用于大部分织物的浸泡,如绵纶织物、维纶织物、涤纶织物、丙纶织物、氨纶织物、聚乙烯纤维织物、棉纤维织物。
4、本发明的抗菌织物是将纤维织物浸泡于由左旋聚乳酸、右旋聚乳酸和抗菌纳米粒子组成的混合溶液中制备得到的,原料来源广泛、制备工艺简单、成本低、效率高,具有良好的工业化应用前景。
附图说明
图1为本发明一实施例的抗菌聚乙烯纤维织物的实物图;
图2为本发明一实施例的抗菌涤纶织物的实物图;
图3为本发明一实施例的抗菌棉纤维织物的实物图;
图4为本发明一实施例的抗菌聚乙烯纤维织物对大肠杆菌抗菌性能展示图;
图5为本发明一实施例的抗菌涤纶织物对大肠杆菌抗菌性能展示图;
图6为本发明一实施例的抗菌棉纤维织物对大肠杆菌抗菌性能展示图;
图7为本发明制备的带有立构交联网络抗菌聚乙烯纤维织物与未带有立构交联网络的抗菌聚乙烯纤维织物的实物对比图。
具体实施方式
下面对本发明的具体实施方式进行详细地描述。本说明书中公开的所有特征,或公开的所有方法或过程中的步骤,除了互相排斥的特征和/或步骤以外,均可以以任何方式组合。
实施例1
本实施例的抗菌织物的制备方法为:
(1)聚乳酸溶液配制:将0.5g聚乳酸(其中,左旋聚乳酸与右旋聚乳酸的质量比为1:1)添加到10g二氯甲烷中,在25℃下以600rpm的转速搅拌溶解3h,得到质量浓度为5%的聚乳酸溶液。
(2)聚乳酸混合溶液配制:将0.02g异质结构氧化锌-银纳米粒子添加到上述聚乳酸溶液中,搅拌8h,得到聚乳酸混合溶液。
(3)抗菌织物制备:将聚乙烯纤维织物浸泡到上述混合溶液中,以1000rpm的转速搅拌12h,将聚乙烯纤维织物取出晾干,得到抗菌聚乙烯纤维织物,如图1所示。
将上述所得产品经菌落计数器检测,对大肠杆菌的抗菌率为99.99%,如图4所示。
对比例1
本对比例1的抗菌织物的制备方法为:
(1)聚乳酸溶液配制:将0.5g左旋聚乳酸添加到10g二氯甲烷中,在25℃下以600rpm的转速搅拌溶解3h,得到质量浓度为5%的聚乳酸溶液。
(2)聚乳酸混合溶液配制:将0.02g异质结构氧化锌-银纳米粒子添加到上述聚乳酸溶液中,搅拌8h,得到聚乳酸混合溶液。
(3)抗菌织物制备:将聚乙烯纤维织物浸泡到上述混合溶液中,以1000rpm的转速搅拌12h,将聚乙烯纤维织物取出晾干,得到抗菌聚乙烯纤维织物。
将上述所得的产品经菌落计数器检测,对大肠杆菌的抗菌率为98.58%。但从抗菌聚乙烯纤维织物上可以看出,未带有立构交联网络的聚乳酸薄膜与聚乙烯纤维织物的界面结合强度很低,很容易剥落,如图7所示。
如图7所示,为经过具体实施方式中的步骤(3)制备的抗菌聚乙烯纤维织物,即为带有立构交联网络的抗菌聚乙烯纤维织物(实施例1,如图7的左图)与未含有立构交联网络的抗菌聚乙烯纤维织物(对比例1,如图7的右图)实物对比图。带有立构交联网络的抗菌聚乙烯纤维织物与聚乳酸/纳米粒子薄膜的界面结合强度要明显优于未含有立构交联网络的抗菌聚乙烯纤维织物与聚乳酸/纳米粒子薄膜的界面结合强度。
实施例2
本实施例的抗菌织物的制备方法为:
(1)聚乳酸溶液配制:将0.2g聚乳酸(其中,左旋聚乳酸与右旋聚乳酸的质量比为1:1)添加到10g二氯甲烷中,在60℃下以900rpm的转速搅拌溶解1h,得到质量浓度为2%的聚乳酸溶液。
(2)聚乳酸混合溶液配制:将0.005g异质结构氧化锌-银纳米粒子添加到上述聚乳酸溶液中,搅拌2h,得到聚乳酸混合溶液。
(3)抗菌织物制备:将涤纶纤维织物浸泡到上述混合溶液中,以1200rpm的转速搅拌10h,将涤纶纤维织物取出晾干,得到抗菌涤纶织物,如图2所示。
将上述所得产品经菌落计数器检测,对大肠杆菌的抗菌率为99.91%,如图5所示。
实施例3
本实施例的抗菌织物的制备方法为:
(1)聚乳酸溶液配制:将0.5g聚乳酸(其中左旋聚乳酸与右旋聚乳酸的质量比为1:1)添加到10g二氯甲烷中,在40℃下以800rpm的转速搅拌溶解2h,得到质量浓度为5%的聚乳酸溶液。
(2)聚乳酸混合溶液配制:将0.01g异质结构氧化锌-银纳米粒子添加到上述聚乳酸溶液中,搅拌5h,得到聚乳酸混合溶液。
(3)抗菌织物制备:将棉纤维织物浸泡到上述混合溶液中,以900rpm的转速搅拌5h,将棉纤维织物取出晾干,得到抗菌棉纤维织物,如图3所示。
将上述所得产品经菌落计数器检测,对大肠杆菌的抗菌率为99.99%,如图6所示。
以上所述实施例仅表达了本发明的具体实施方式,其描述较为具体和详细,但并不能因此而理解为对本发明专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明保护范围。
Claims (6)
1.一种抗菌织物的制备方法,其特征在于,按重量份数计,具体包括以下步骤:
(1)聚乳酸溶液配制:将0.1~30份聚乳酸添加到100份溶剂中,在室温~100℃下,以200~1000rpm的转速搅拌溶解0.5~5h,得到质量浓度为0.1~30%的聚乳酸溶液;
(2)混合溶液配制:将0.01~20份抗菌纳米粒子添加到上述聚乳酸溶液中,搅拌0.1~12h,得到混合溶液;
(3)抗菌织物制备:将织物浸泡到上述混合溶液中,一段时间后,将织物取出晾干,得到抗菌织物;
在所述步骤(1)中,所述聚乳酸为左旋聚乳酸和右旋聚乳酸共混物,其中,所述右旋聚乳酸占聚乳酸总质量的10~50%。
2.根据权利要求1所述的抗菌织物的制备方法,其特征在于,所述步骤(1)中,所述溶剂为碳酸二甲酯、二氯甲烷或三氯甲烷中的任意一种或两种及以上的组合物。
3.根据权利要求1所述的抗菌织物的制备方法,其特征在于,所述步骤(2)中,所述抗菌纳米粒子为异质结构氧化锌-银纳米粒子、氧化亚铜纳米粒子、氧化铜纳米粒子、三氧化二铁纳米粒子、四氧化三铁纳米粒子、氧化锌纳米粒子、硫化锌纳米粒子、二氧化钛纳米粒子、银纳米粒子或氧化铋纳米粒子中的任意一种或两种及以上的组合物。
4.根据权利要求1所述的抗菌织物的制备方法,其特征在于,所述步骤(3)中,所述织物为锦纶织物、维纶织物、涤纶织物、丙纶织物、氨纶织物、聚乙烯纤维织物、棉纤维织物中的任意一种或两种及以上的组合。
5.根据权利要求1所述的抗菌织物的制备方法,其特征在于,所述步骤(3)中,所述浸泡方法为静置或以低于2000rpm的转速搅拌0.01~12h。
6.一种如权利要求1-5任一项所述的抗菌织物的制备方法制得的抗菌织物。
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