CN117431697A - 一种熔喷无纺布的组成物、熔喷无纺布及其形成方法 - Google Patents
一种熔喷无纺布的组成物、熔喷无纺布及其形成方法 Download PDFInfo
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Abstract
本申请涉及熔喷无纺布的技术领域,具体公开了一种熔喷无纺布的组成物、熔喷无纺布及其形成方法。熔喷无纺布包括以下重量份的原料:聚丙烯纤维50‑65份、涤纶纤维15‑20份、抑菌纤维8‑12份、氧化锌5‑9份、甘露醇2‑6份、硬脂酸锌3‑5份;其形成方法为:将氧化锌、甘露醇、硬脂酸锌挤出造粒,熔融纺丝,得到复合纤维,将聚丙烯纤维、涤纶纤维、抑菌纤维、复合纤维分别进行开松、梳理,然后交叉铺网,对铺好的纤维网进行水刺加固,烘干,得到坯布;将坯布放在抑菌液中浸泡,取出,烘干,制得熔喷无纺布。本申请的熔喷无纺布,通过各原料之间的协同作用,具有提高熔喷无纺布抑菌性的优点。
Description
技术领域
本申请涉及熔喷无纺布技术领域,尤其是涉及一种熔喷无纺布的组成物、熔喷无纺布及其形成方法。
背景技术
熔喷无纺布是一种由热塑性聚合物纤维制成的非织造材料,它是通过将聚合物熔化并通过小喷嘴挤出以形成非常细的纤维网而生产的,然后将这些纤维以随机图案铺设,并通过热、压力或化学处理并结合在一起,所得的材料具有高度的过滤效果,使其应用比较广泛,例如空气和液体过滤、医用口罩和防护服、工业擦拭布和绝缘材料等。
随着经济的发展和人民生活水平的提高,人们的保健意识也逐渐增强,对卫生健康环境等方面的要求也越来越高,目前,有一些无纺布在天气变热或者受潮后容易产生污染,滋生细菌,容易对人体的健康产生危害,因此,如何提高无纺布的抑菌性是急需解决的一大问题。
发明内容
为了提高无纺布的抑菌性,本申请提供一种熔喷无纺布的组成物、熔喷无纺布及其形成方法。
第一方面,本申请提供一种熔喷无纺布的组成物、熔喷无纺布,采用如下技术方案:
一种熔喷无纺布,其包括以下重量份的原料:聚丙烯纤维50-65份、涤纶纤维15-20份、抑菌纤维8-12份,氧化锌5-9份、甘露醇2-6份、硬脂酸锌3-5份、所述抑菌纤维为载银枇杷果渣与PET切片熔融纺丝制得;
所述抑菌纤维采用以下方法制备:将载银枇杷果渣与PET切片混合均匀,熔融纺丝,制得抑菌纤维;
所述载银枇杷果渣和PET切片的重量配比为(0.4-0.6):1;
所述载银枇杷果渣采用以下方法制备:
A1:将枇杷果渣放入乙醇溶液中,浸提,重复提取,合并滤液,回收溶剂,得到浸膏,将浸膏萃取,得到枇杷果渣提取物;
A2:将枇杷果渣提取物、硝酸银放入水中,混合均匀,加热升温,直至出现棕黄色,停止加热,离心,过滤,得到载银枇杷果渣;
所述枇杷果渣提取物和硝酸银的重量配比为1:(0.8-1.2);
进一步的,所述载银枇杷果渣采用以下方法制备:
A1:将枇杷果渣放入乙醇溶液中,浸提,重复提取3-5次,合并滤液,回收溶剂,得到浸膏,利用乙酸乙酯将浸膏萃取,得到枇杷果渣提取物;
A2:将枇杷果渣提取物、硝酸银放入水中,混合均匀,加热至70-90℃,直至出现棕黄色,停止加热,离心,过滤,得到载银枇杷果渣;
其中,乙醇溶液的质量分数为95%,每1g枇杷果渣中乙醇溶液的添加量为3-5mL,枇杷果渣和乙酸乙酯的重量配比为1:(2-4)。
通过采用上述技术方案,本申请的熔喷无纺布,通过各原料之间的协同作用,提高了无纺布对大肠杆菌、金黄色葡萄球菌、白色链球菌的抑菌率,其中,大肠杆菌的抑菌率为97.6-99.8%,金黄色葡萄球菌的抑菌率为96.9-99.5%,白色链球菌的抑菌率为87.0-89.6%。
聚丙烯纤维和涤纶纤维为无纺布的主要原料,能够使无纺布保持良好的机械性能。抑菌纤维为载银枇杷果渣与PET切片共混纺丝制得,其中,载银枇杷果渣中含有银离子,银离子带有正电荷,能够依靠库仑引力吸附在细菌上,并穿透细胞壁进入细胞膜,与细胞接触反应,损伤细菌的细胞膜,细胞膜是细菌生命活动重要的组成部分,细胞膜的损坏会造成细菌固有成分被破坏,产生功能性障碍,导致细菌死亡,从而达到抑菌的目的。利用枇杷果渣负载银离子,不仅能够实现废物利用,节约生产成本,而且枇杷果渣中含有大量黄酮类成分,黄酮类成分能够破坏细菌细胞壁和细胞膜,导致胞内成分释放而引起膜的电子传递、营养吸收、核苷酸合成及ATP活性等功能障碍,从而导致细胞死亡。通过银离子和枇杷果渣之间的协同作用,更能够提高抑菌性,从而提高无纺布的抑菌性。氧化锌也具有抑菌的作用,通过甘露醇和硬脂酸锌进行配合,能够有效降低无纺布的脆化温度,能显著延长无纺布的使用寿命。
首先制备枇杷果渣提取物,然后利用枇杷果渣和硝酸银制备载银枇杷果渣,能够使枇杷果渣更好的负载银离子,能够通过银离子和枇杷果渣的协同作用,提高无纺布的抑菌性。且,对载银枇杷果渣和PET切片的重量配比进行限定,当载银枇杷果渣的添加量过少,不能较优的提高无纺布的抑菌性;当载银枇杷果渣的添加量过多,会对无纺布的机械性能造成影响。另外,还对硝酸银和枇杷果渣提取物的添加量进行限定,当硝酸银的添加量较少时,不能够较优的发挥作用,不能较优的提高无纺布的抑菌性;当硝酸银的添加量较多时,即银离子较多,会导致无纺布容易老化,进而影响无纺布的机械性能。当载银枇杷果渣和PET切片的重量配比、硝酸银和枇杷果渣提取物的添加量在上述范围内时,不仅能够使无纺布保持良好的机械性能,还能够使无纺布具有较优的抑菌性。
第二方面,本申请提供一种熔喷无纺布的形成方法,采用如下技术方案:
一种熔喷无纺布的形成方法,包括如下步骤:
S1:将氧化锌、甘露醇、硬脂酸锌挤出造粒,熔融纺丝,得到复合纤维,将聚丙烯纤维、涤纶纤维、抑菌纤维、复合纤维分别进行开松、梳理,然后交叉铺网,对铺好的纤维网进行水刺加固,烘干,得到坯布;
S2:将坯布放在抑菌液中浸泡,取出,烘干,制得熔喷无纺布。
进一步的,一种熔喷无纺布的形成方法,包括如下步骤:
S1:将氧化锌、甘露醇、硬脂酸锌挤出造粒,熔融纺丝,得到复合纤维,将聚丙烯纤维、涤纶纤维、抑菌纤维、复合纤维分别进行开松、梳理,然后交叉铺网,对铺好的纤维网进行水刺加固,烘干,得到坯布;
S2:将坯布放在抑菌液中浸泡1-3h,取出,烘干,制得熔喷无纺布。
通过采用上述技术方案,利用上述制备方法对熔喷无纺布进行制备,首先抑菌纤维能够提高无纺布的抑菌性,抑菌液又再进一步提高了无纺布的抑菌性,不仅使无纺布坯布自身具有抑菌的作用,还使无纺布的表层具有抑菌的作用,达到双重抑菌的作用,抑菌效果更优。
作为优选:所述抑菌液采用以下方法制备:将氧化锌放入芦荟提取液中,混合均匀,静置一段时间,得到抑菌液。
进一步的,所述抑菌液采用以下方法制备:将氧化锌放入芦荟提取液中,混合均匀,静置10-14h,得到抑菌液。
作为优选:每1mL芦荟提取液中氧化锌的添加量为0.5-1.5g。
通过采用上述技术方案,抑菌液中的氧化锌能够释放锌离子,锌离子具有氧化还原性,当与细胞膜接触时,能够发生反应,破坏细胞膜的结构,使其失去活性,从达到杀菌的目的。芦荟提取液中有细胞分裂素,具有较强的生化活性,可直接杀灭细菌。利用氧化锌和芦荟提取液的协同作用,能够进一步提高无纺布的抑菌性。
作为优选:所述芦荟提取液采用以下方法制备:将芦荟洗净,烘干,粉碎,过筛,加入到乙醇溶液中,加热升温,浸提一段时间,过滤,收集滤液,得到芦荟提取液。
进一步的,所述芦荟提取液采用以下方法制备:将芦荟洗净,烘干,粉碎,过100目筛,加入到乙醇溶液中,加热至40-60℃,浸提1-3h,过滤,收集滤液,得到芦荟提取液;
其中,乙醇溶液的质量分数为80%,每1g芦荟中乙醇溶液的添加量为8-12mL。
通过采用上述技术方案,利用上述制备方法对芦荟提取液进行制备,能够使芦荟提取液更好的发挥作用,从而进一步提高无纺布的抑菌性。
作为优选:所述坯布在放入抑菌液前经盐酸多巴胺溶液预处理。
进一步的,所述坯布在放入抑菌液前经盐酸多巴胺溶液预处理的具体步骤如下:将盐酸多巴胺溶液放入三羟甲基氨基甲烷溶液中,混合均匀,用盐酸溶液调pH值至8.5-8.8,将无纺布浸入,浸泡20-24h,取出,用水洗净,烘干,得到预处理的坯布;
其中,盐酸多巴胺溶液的浓度为0.02mol/L,三羟甲基氨基甲烷溶液的浓度为10mmol/L,盐酸溶液的质量分数为30%,盐酸多巴胺溶液和三羟甲基氨基甲烷溶液的体积比为1:1。
通过采用上述技术方案,坯布经过预处理后,能够使坯布表面残留许多多巴胺颗粒,多巴胺颗粒具有较强的黏附性,待坯布浸入抑菌液时,能够牢牢的粘附住芦荟提取液中的黄酮类成分和锌离子,从而能够进一步提高无纺布的抑菌性。
综上所述,本申请包括以下至少一种有益技术效果:
1、由于本申请中采用载银枇杷果渣与PET切片共混纺丝制得抑菌纤维,通过银离子和枇杷果渣二者之间的协同作用,能够更好的提高无纺布的抑菌性,可使大肠杆菌的抑菌率达到99.8%,金黄色葡萄球菌的抑菌率达到99.5%,白色链球菌的抑菌率达到89.6%;
2、本申请中优选制成坯布后采用盐酸多巴胺溶液进行预处理,能够使无纺布更好的粘附上芦荟提取液中的黄酮类成分和锌离子,从而进一步提高无纺布的抑菌性。
具体实施方式
以下结合具体内容对本申请作进一步详细说明。
原料
本申请各原料均可通过市售获得。
PET切片熔点265-280℃。
制备例
制备例1
一种载银枇杷果渣,其采用以下方法制备:
A1:将5kg枇杷果渣放入20L质量分数为95%的乙醇溶液中,浸提,重复提取5次,合并滤液,回收溶剂,得到浸膏,利用15kg乙酸乙酯将浸膏萃取,得到枇杷果渣提取物;
A2:将2kg枇杷果渣提取物、1.6kg硝酸银放入水中,混合均匀,加热至80℃,直至出现棕黄色,停止加热,离心,过滤,得到载银枇杷果渣。
制备例2
一种载银枇杷果渣,其和制备例1的区别之处在于,硝酸银的添加量不同,制备例2中硝酸银的添加量为2kg。
制备例3
一种载银枇杷果渣,其和制备例1的区别之处在于,硝酸银的添加量不同,制备例3中硝酸银的添加量为2.4kg。
制备例4
一种抑菌纤维,其采用以下方法制备:
将0.8kg采用制备例1制备得到的载银枇杷果渣和2kgPET切片混合均匀,熔融纺丝,得到抑菌纤维。
制备例5
一种抑菌纤维,其和制备例4的区别之处在于,载银枇杷果渣的来源不同,制备例5中的载银枇杷果渣采用制备例2制备得到。
制备例6
一种抑菌纤维,其和制备例4的区别之处在于,载银枇杷果渣的来源不同,制备例6中的载银枇杷果渣采用制备例3制备得到。
制备例7
一种抑菌纤维,其和制备例5的区别之处在于,载银枇杷果渣的添加量不同,制备例7中的载银枇杷果渣的添加量为1kg。
制备例8
一种抑菌纤维,其和制备例5的区别之处在于,载银枇杷果渣的添加量不同,制备例8中的载银枇杷果渣的添加量为1.2kg。
制备例9
一种芦荟提取液,其采用以下方法制备:
将5kg芦荟洗净,烘干,粉碎,过100目筛,加入50L到质量分数为80%的乙醇溶液中,加热至50℃,浸提2h,过滤,收集滤液,得到芦荟提取液。
制备例10
一种抑菌液,其采用以下方法制备:
将2kg氧化锌放入2L采用制备例9制备得到的芦荟提取液中,混合均匀,静置12h,得到抑菌液。
实施例
实施例1
一种熔喷无纺布,其原料配比见表1所示;
一种熔喷无纺布的形成方法,包括如下步骤:
S1:将氧化锌、甘露醇、硬脂酸锌挤出造粒,熔融纺丝,得到复合纤维,将聚丙烯纤维、涤纶纤维、采用制备例4制备得到的抑菌纤维、复合纤维分别进行开松、梳理,然后交叉铺网,对铺好的纤维网进行水刺加固,烘干,得到坯布;
S2:将坯布放在采用制备例10制备得到的抑菌液中浸泡2h,取出,烘干,制得熔喷无纺布。
实施例2-5
一种熔喷无纺布,其和实施例1的区别之处在于,熔喷无纺布的原料配比不同,其原料配比见表1所示。
实施例6
一种熔喷无纺布,其和实施例4的区别之处在于,抑菌纤维的来源不同,实施例6中的抑菌纤维采用制备例5制备得到。
实施例7
一种熔喷无纺布,其和实施例4的区别之处在于,抑菌纤维的来源不同,实施例7中的抑菌纤维采用制备例6制备得到。
实施例8
一种熔喷无纺布,其和实施例4的区别之处在于,抑菌纤维的来源不同,实施例8中的抑菌纤维采用制备例7制备得到。
实施例9
一种熔喷无纺布,其和实施例4的区别之处在于,抑菌纤维的来源不同,实施例9中的抑菌纤维采用制备例8制备得到。
实施例10
一种熔喷无纺布,其和实施例8的区别之处在于,坯布在放入抑菌液前进行以下预处理:将浓度为0.02mol/L的盐酸多巴胺溶液放入浓度为10mmol/L的三羟甲基氨基甲烷溶液中,混合均匀,用质量分数为30%的盐酸溶液调pH值至8.6,将无纺布浸入,浸泡22h,取出,用水洗净,烘干,得到预处理的坯布;其中,盐酸多巴胺溶液和三羟甲基氨基甲烷溶液的体积比为1:1。
对比例
对比例1
一种熔喷无纺布,其和实施例1的区别之处在于,抑菌纤维等量替换为聚丙烯纤维。
对比例2
一种熔喷无纺布,其和实施例1的区别之处在于,载银枇杷果渣等量替换为枇杷果渣。
对比例3
一种熔喷无纺布,其和实施例1的区别之处在于,载银枇杷果渣等量替换为硝酸银。
性能检测试验
对实施例1-10和对比例1-3中的熔喷无纺布进行下述性能检测:
大肠杆菌的抑菌率、金黄色葡萄球菌的抑菌率、白色链球菌的抑菌率:依据GB/T20944.3-2008《纺织品 抑菌性能的评价 第3部分:振荡法》对涤纶混纺织物进行抑菌率的检测,检测结果如表2所示;其中,大肠杆菌的原始菌落总数为1.85×106CFU/g,金黄色葡萄球菌原始菌落总数为1.90×106CFU/g,白色链球菌原始菌落总数为1.85×106CFU/g。
从表2中可以看出,本申请的熔喷无纺布,通过各原料之间的协同作用,提高了无纺布对大肠杆菌、金黄色葡萄球菌、白色链球菌的抑菌率,其中,大肠杆菌的抑菌率为97.6-99.8%,金黄色葡萄球菌的抑菌率为96.9-99.5%,白色链球菌的抑菌率为87.0-89.6%。
结合实施例1和对比例1-3可以看出,实施例1中无纺布的大肠杆菌的抑菌率为97.6%,金黄色葡萄球菌的抑菌率为96.9%,白色链球菌的抑菌率为87.0%,优于对比例1-3,表明无纺布中采用载银枇杷果渣对PET切片进行改性制得的抑菌纤维更为合适,能够提高无纺布对大肠杆菌、金黄色葡萄球菌、白色链球菌的抑菌率。
结合实施例1-5可以看出,实施例4中无纺布的大肠杆菌的抑菌率为98.7%,金黄色葡萄球菌的抑菌率为98.2%,白色链球菌的抑菌率为88.1%,优于其他实施例,表明实施例4中各原料的添加量更为合适,能够较优的提高无纺布的抑菌性。
结合实施例4、实施例6-9可以看出,实施例8中无纺布的大肠杆菌的抑菌率为99.5%,金黄色葡萄球菌的抑菌率为99.2%,白色链球菌的抑菌率为89.3%,优于其他实施例,表明抑菌纤维采用制备例7制备得到更为合适,能够更优的提高无纺布的抑菌性。
结合实施例8和实施例10可以看出,实施例10中无纺布的大肠杆菌的抑菌率为99.8%,金黄色葡萄球菌的抑菌率为99.5%,白色链球菌的抑菌率为89.6%,表明坯布进行预处理更为合适,能够进一步提高无纺布的抑菌性。
上述具体实施方式的=实施例均为本申请的较佳实施例,并非依此限制本申请的保护范围,故:凡依本申请的结构、形状、原理所做的等效变化,均应涵盖于本申请的保护范围之内。
Claims (6)
1.一种熔喷无纺布,其特征在于:其包括以下重量份的原料:聚丙烯纤维50-65份、涤纶纤维15-20份、抑菌纤维8-12份、氧化锌5-9份、甘露醇2-6份、硬脂酸锌3-5份,所述抑菌纤维为载银枇杷果渣与PET切片熔融纺丝制得;
所述抑菌纤维采用以下方法制备:将载银枇杷果渣与PET切片混合均匀,熔融纺丝,制得抑菌纤维;
所述载银枇杷果渣和PET切片的重量配比为(0.4-0.6):1;
所述载银枇杷果渣采用以下方法制备:
A1:将枇杷果渣放入乙醇溶液中,浸提,重复提取,合并滤液,回收溶剂,得到浸膏,将浸膏萃取,得到枇杷果渣提取物;
A2:将枇杷果渣提取物、硝酸银放入水中,混合均匀,加热升温,直至出现棕黄色,停止加热,离心,过滤,得到载银枇杷果渣;
所述枇杷果渣提取物和硝酸银的重量配比为1:(0.8-1.2)。
2.一种如权利要求1所述的熔喷无纺布的形成方法,其特征在于,包括如下步骤:
S1:将氧化锌、甘露醇、硬脂酸锌挤出造粒,熔融纺丝,得到复合纤维,将聚丙烯纤维、涤纶纤维、抑菌纤维、复合纤维分别进行开松、梳理,然后交叉铺网,对铺好的纤维网进行水刺加固,烘干,得到坯布;
S2:将坯布放在抑菌液中浸泡,取出,烘干,制得熔喷无纺布。
3.根据权利要求2所述的一种熔喷无纺布的形成方法,其特征在于:所述抑菌液采用以下方法制备:将氧化锌放入芦荟提取液中,混合均匀,静置一段时间,得到抑菌液。
4.根据权利要求3所述的一种熔喷无纺布的形成备方法,其特征在于:每1mL芦荟提取液中氧化锌的添加量为0.5-1.5g。
5.根据权利要求3所述的一种熔喷无纺布的形成方法,其特征在于:所述芦荟提取液采用以下方法制备:将芦荟洗净,烘干,粉碎,过筛,加入到乙醇溶液中,加热升温,浸提一段时间,过滤,收集滤液,得到芦荟提取液。
6.根据权利要求2所述的一种熔喷无纺布的形成方法,其特征在于:所述坯布在放入抑菌液前经盐酸多巴胺溶液预处理。
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