CN108939142A - 一种含复合抗菌微球的敷料 - Google Patents
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Abstract
本发明公开了一种含复合抗菌微球的敷料,具有安全、广谱抗菌、长效抗菌、消炎消肿的优点,同时,杀菌速度快,避免伤口再次感染;利用多孔二氧化硅作为载体,在其表面原位合成纳米银粒子,并且吸附抗菌消炎提取液,形成复合抗菌微球,不仅分散均匀、稳定性好,各组分协同增效,具有良好的抗菌消炎效果,同时,该复合微球的多孔结构充分与水凝胶敷料连接,增强了敷料的力学性能和稳定性;加入的胶原蛋白具有淡化疤痕,促进伤口愈合的作用;通过将兰香草、山豆根、蒲公英、草木灰进行合理配伍,达到了良好的抗菌消炎的作用,与纳米银粒子协同发挥优势,使所得敷料抗菌消炎效果显著,可用于临床上因各种原因造成的皮肤缺损感染的治疗。
Description
技术领域
本发明属于敷料技术领域,具体涉及一种含复合抗菌微球的敷料。
背景技术
皮肤作为人体最大的器官,对于维持并延续人的生命有着重要作用。皮肤具有保护人体免受物理、化学伤害的作用,同时防止细菌等微生物的入侵并维持体液和电解质的平衡。生活中的烧伤、创伤等多种致伤因素均可导致皮肤结构和功能的破坏,形成创面,创面的正确处理是该类疾病治疗的关键。积极的伤口处理,可有效促进创面愈合,改善预后,减少伤残。由天然高分子制成的伤口敷料能够在伤口表面形成凝胶保护膜,具有生物相容性、降解性好,高吸湿性、易去除,迅速止血,加速伤口愈合的优势。
目前,纳米银粒子水凝胶敷料还存在着纳米银分布不均匀,水凝胶敷料力学性能欠缺,抗菌效果有待提高的问题。
发明内容
针对上述问题,本发明旨在提供一种具有良好的力学性能,同时抗菌消炎效果显著的含复合抗菌微球的敷料。
本发明通过以下技术方案实现:
一种含复合抗菌微球的敷料,包括以下重量份的原料制成:
抗菌消炎提取液10-20,多孔二氧化硅5-10,冰醋酸溶液30-50,硝酸银溶液10-20,聚乙二醇1-2,壳聚糖40-60,胶原蛋白2-3,过硫酸铵1-2,N,N'-亚甲基双丙烯酰胺10-15;
所述冰醋酸溶液质量浓度为3-6%;所述硝酸银溶液质量浓度为2-5%;
进一步的,所述抗菌消炎提取液的制备方法如下:
将以重量份计的10-15份兰香草、3-5份山豆根、10-15份蒲公英用60-70℃的温热水清洗干净后,冷冻干燥,然后在低温超微粉碎机中1-3℃下进行低温粉碎处理,得到细度为100-200目的中药粉,将所得中药粉加入到其体积20-25倍的无水乙醇中,升温至50-55℃超声5-10min后,加入草木灰,继续超声处理35-45min,然后在75-85℃下回流5-10h,冷却后过滤,将滤液在旋转蒸发仪上蒸发至体积缩小为原来的1/5-1/6,得到抗菌消炎提取液;
进一步的,所述多孔二氧化硅粒径为10-100μm,孔径大小为100-500nm。
进一步的,其制备方法包括以下步骤:
(1)将多孔二氧化硅放入冰醋酸溶液中浸泡2-4h,然后过滤,蒸馏水冲洗3-4次,于100-110℃下烘干,再放入管式炉中,在230-250℃下焙烧2-3h,以2-3℃/min的速率降至室温;
(2)将步骤(1)所得多孔二氧化硅、聚乙二醇加入到其体积20-30倍的去离子水中,300-400rpm下搅拌1-2h,然后向其中加入硝酸银溶液,200-300rpm下混合10-20min后,利用光激发,反应5-10h,过滤,将所得物在-35~-40℃冷冻干燥;
(3)将步骤(3)所得物加入到抗菌消炎提取液中,600-800W下超声处理20-30min后置于反应釜中,调真空度为-0.08~-0.1MPa,温度为120-130℃,反应5-10h,然后冷却,旋蒸除去大部分溶剂后,冷冻干燥除去溶剂;
(4)将壳聚糖溶于冰醋酸溶液中,制成质量浓度为2-3%的壳聚糖溶液,然后加入步骤(4)所得物、胶原蛋白,在55-65℃,150-250rpm下搅拌溶解20-30min,然后加入过硫酸铵,搅拌20-25min后,加入N,N'-亚甲基双丙烯酰胺,继续搅拌30-50min,然后静置1-2h,然后升温至70-75℃,静置15-24h,即可。
进一步的,所述冷冻干燥的温度为-40~-45℃。
进一步的,所述草木灰可由稻秆、玉米杆、果壳皮、蛋壳制备。
进一步的,所述光激发为紫外光激发。
本发明的有益效果:本发明制备的含复合抗菌微球的敷料具有安全、广谱抗菌、长效抗菌、消炎消肿的优点,同时,杀菌速度快,避免伤口再次感染,淡化疤痕;利用多孔二氧化硅作为载体,在其表面原位合成纳米银粒子,并且吸附抗菌消炎提取液,形成复合抗菌微球,不仅分散均匀、稳定性好,各组分协同增效,具有良好的抗菌消炎效果,同时,该复合微球的多孔结构充分与水凝胶敷料连接,增强了敷料的力学性能和稳定性;加入的胶原蛋白具有淡化疤痕,促进伤口愈合的作用;通过将兰香草、山豆根、蒲公英、草木灰进行合理配伍,达到了良好的抗菌消炎的作用,与纳米银粒子协同发挥优势,使所得敷料抗菌消炎效果显著,可用于临床上因各种原因造成的皮肤缺损感染的治疗。
具体实施方式
下面用具体实施例说明本发明,但并不是对本发明的限制。
实施例1
一种含复合抗菌微球的敷料,包括以下重量份的原料制成:
抗菌消炎提取液10,多孔二氧化硅5,冰醋酸溶液30,硝酸银溶液10,聚乙二醇1,壳聚糖40,胶原蛋白2,过硫酸铵1,N,N'-亚甲基双丙烯酰胺10;
所述冰醋酸溶液质量浓度为3%;所述硝酸银溶液质量浓度为2%;
进一步的,所述抗菌消炎提取液的制备方法如下:
将以重量份计的10份兰香草、3份山豆根、10份蒲公英用60℃的温热水清洗干净后,冷冻干燥,然后在低温超微粉碎机中1℃下进行低温粉碎处理,得到细度为100目的中药粉,将所得中药粉加入到其体积20倍的无水乙醇中,升温至50℃超声5min后,加入草木灰,继续超声处理35min,然后在75-85℃下回流5h,冷却后过滤,将滤液在旋转蒸发仪上蒸发至体积缩小为原来的1/5,得到抗菌消炎提取液;
进一步的,所述多孔二氧化硅粒径为10μm,孔径大小为100nm。
进一步的,其制备方法包括以下步骤:
(1)将多孔二氧化硅放入冰醋酸溶液中浸泡2h,然后过滤,蒸馏水冲洗3次,于100℃下烘干,再放入管式炉中,在230℃下焙烧2h,以2℃/min的速率降至室温;
(2)将步骤(1)所得多孔二氧化硅、聚乙二醇加入到其体积20倍的去离子水中, 300rpm下搅拌1h,然后向其中加入硝酸银溶液,200rpm下混合10min后,利用光激发,反应5h,过滤,将所得物在-35℃冷冻干燥;
(3)将步骤(3)所得物加入到抗菌消炎提取液中,600W下超声处理20min后置于反应釜中,调真空度为-0.08MPa,温度为120℃,反应5h,然后冷却,旋蒸除去大部分溶剂后,冷冻干燥除去溶剂;
(4)将壳聚糖溶于冰醋酸溶液中,制成质量浓度为2%的壳聚糖溶液,然后加入步骤(4)所得物、胶原蛋白,在55℃,150rpm下搅拌溶解20min,然后加入过硫酸铵,搅拌20min后,加入N,N'-亚甲基双丙烯酰胺,继续搅拌30min,然后静置1h,然后升温至70℃,静置15h,即可。
进一步的,所述冷冻干燥的温度为-40℃。
进一步的,所述草木灰可由稻秆、玉米杆、果壳皮、蛋壳制备。
进一步的,所述光激发为紫外光激发。
实施例2
一种含复合抗菌微球的敷料,包括以下重量份的原料制成:
抗菌消炎提取液15,多孔二氧化硅8,冰醋酸溶液40,硝酸银溶液15,聚乙二醇2,壳聚糖50,胶原蛋白3,过硫酸铵2,N,N'-亚甲基双丙烯酰胺12;
所述冰醋酸溶液质量浓度为4%;所述硝酸银溶液质量浓度为3%;
进一步的,所述抗菌消炎提取液的制备方法如下:
将以重量份计的12份兰香草、1份山豆根、12份蒲公英用65℃的温热水清洗干净后,冷冻干燥,然后在低温超微粉碎机中2℃下进行低温粉碎处理,得到细度为150目的中药粉,将所得中药粉加入到其体积22倍的无水乙醇中,升温至53℃超声7min后,加入草木灰,继续超声处理40min,然后在80℃下回流7h,冷却后过滤,将滤液在旋转蒸发仪上蒸发至体积缩小为原来的1/6,得到抗菌消炎提取液;
进一步的,所述多孔二氧化硅粒径为50μm,孔径大小为200nm。
进一步的,其制备方法包括以下步骤:
(1)将多孔二氧化硅放入冰醋酸溶液中浸泡3h,然后过滤,蒸馏水冲洗4次,于105℃下烘干,再放入管式炉中,在240℃下焙烧3h,以3℃/min的速率降至室温;
(2)将步骤(1)所得多孔二氧化硅、聚乙二醇加入到其体积25倍的去离子水中, 350rpm下搅拌2h,然后向其中加入硝酸银溶液,250rpm下混合15min后,利用光激发,反应7h,过滤,将所得物在-38℃冷冻干燥;
(3)将步骤(3)所得物加入到抗菌消炎提取液中,700W下超声处理25min后置于反应釜中,调真空度为-0.09MPa,温度为125℃,反应7h,然后冷却,旋蒸除去大部分溶剂后,冷冻干燥除去溶剂;
(4)将壳聚糖溶于冰醋酸溶液中,制成质量浓度为3%的壳聚糖溶液,然后加入步骤(4)所得物、胶原蛋白,在60℃,200rpm下搅拌溶解25min,然后加入过硫酸铵,搅拌22min后,加入N,N'-亚甲基双丙烯酰胺,继续搅拌40min,然后静置2h,然后升温至73℃,静置15-24h,即可。
进一步的,所述冷冻干燥的温度为-42℃。
进一步的,所述草木灰可由稻秆、玉米杆、果壳皮、蛋壳制备。
进一步的,所述光激发为紫外光激发。
对比实施例1
本对比实施例相比于实施例1,省略了多孔二氧化硅的加入,除此之外的方法步骤均相同。
对比实施例2
本对比实施例相比于实施例1,省略了硝酸银的加入,除此之外的方法步骤均相同。
对比实施例3
本对比实施例相比于实施例1,省略了抗菌消炎提取液的加入,除此之外的方法步骤均相同。
对比实施例4
本对比实施例相比于实施例1,省略了胶原蛋白的加入,除此之外的方法步骤均相同。
实验:
抗菌性能测试:选取大肠杆菌和金黄色葡萄球菌为实验菌种,采用改良的 K-B 技术和LB 培养法,考察各组样品的抗菌性。实验前在 LB 培养基中进行菌种活化,37℃,90 r /min下振荡过夜。在营养琼脂培养基平皿表面滴加150μL已活化的细菌菌液,均匀涂抹,晾干后,将各组样品裁成直径为6mm的圆形,然后将其固定于琼脂表面,于37℃恒温培养16 h,每组5个平行试验,取平均值。测试数据如表1所示:
表1
由表1可以看出,本发明中纳米银粒子和抗菌消炎提取液协同增效,使所得敷料具有显著的抗菌效果。
拉伸性能测试:参照GB/T1040-2006进行测试,将各组样品制成直径为6mm,长度为60mm的圆柱形样条,标距为15mm,拉伸速率为100mm/min。测试结果如表2所示:
表2
由表2可以看出,本发明制备的敷料力学性能良好,因复合微球的多孔结构充分与水凝胶敷料连接,增强了敷料的力学性能。
Claims (7)
1.一种含复合抗菌微球的敷料,其特征在于,包括以下重量份的原料制成:
抗菌消炎提取液10-20,多孔二氧化硅5-10,冰醋酸溶液30-50,硝酸银溶液10-20,聚乙二醇1-2,壳聚糖40-60,胶原蛋白2-3,过硫酸铵1-2,N,N'-亚甲基双丙烯酰胺10-15;
所述冰醋酸溶液质量浓度为3-6%;所述硝酸银溶液质量浓度为2-5%。
2.根据权利要求1所述的一种含复合抗菌微球的敷料,其特征在于,所述抗菌消炎提取液的制备方法如下:
将以重量份计的10-15份兰香草、3-5份山豆根、10-15份蒲公英用60-70℃的温热水清洗干净后,冷冻干燥,然后在低温超微粉碎机中1-3℃下进行低温粉碎处理,得到细度为100-200目的中药粉,将所得中药粉加入到其体积20-25倍的无水乙醇中,升温至50-55℃超声5-10min后,加入草木灰,继续超声处理35-45min,然后在75-85℃下回流5-10h,冷却后过滤,将滤液在旋转蒸发仪上蒸发至体积缩小为原来的1/5-1/6,得到抗菌消炎提取液。
3.根据权利要求1所述的一种含复合抗菌微球的敷料,其特征在于,所述多孔二氧化硅粒径为10-100μm,孔径大小为100-500nm。
4.根据权利要求1所述的一种含复合抗菌微球的敷料,其特征在于,其制备方法包括以下步骤:
(1)将多孔二氧化硅放入冰醋酸溶液中浸泡2-4h,然后过滤,蒸馏水冲洗3-4次,于100-110℃下烘干,再放入管式炉中,在230-250℃下焙烧2-3h,以2-3℃/min的速率降至室温;
(2)将步骤(1)所得多孔二氧化硅、聚乙二醇加入到其体积20-30倍的去离子水中,300-400rpm下搅拌1-2h,然后向其中加入硝酸银溶液,200-300rpm下混合10-20min后,利用光激发,反应5-10h,过滤,将所得物在-35~-40℃冷冻干燥;
(3)将步骤(3)所得物加入到抗菌消炎提取液中,600-800W下超声处理20-30min后置于反应釜中,调真空度为-0.08~-0.1MPa,温度为120-130℃,反应5-10h,然后冷却,旋蒸除去大部分溶剂后,冷冻干燥除去溶剂;
(4)将壳聚糖溶于冰醋酸溶液中,制成质量浓度为2-3%的壳聚糖溶液,然后加入步骤(4)所得物、胶原蛋白,在55-65℃,150-250rpm下搅拌溶解20-30min,然后加入过硫酸铵,搅拌20-25min后,加入N,N'-亚甲基双丙烯酰胺,继续搅拌30-50min,然后静置1-2h,然后升温至70-75℃,静置15-24h,即可。
5.根据权利要求2所述的抗菌消炎提取液的制备方法,其特征在于,所述冷冻干燥的温度为-40~-45℃。
6.根据权利要求2所述的抗菌消炎提取液的制备方法,其特征在于,所述草木灰可由稻秆、玉米杆、果壳皮、蛋壳制备。
7.根据权利要求4所述的一种含复合抗菌微球的敷料的制备方法,其特征在于,所述光激发为紫外光激发。
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