CN116114705A - 一种高效抗菌新材料的制备方法 - Google Patents

一种高效抗菌新材料的制备方法 Download PDF

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CN116114705A
CN116114705A CN202211436989.1A CN202211436989A CN116114705A CN 116114705 A CN116114705 A CN 116114705A CN 202211436989 A CN202211436989 A CN 202211436989A CN 116114705 A CN116114705 A CN 116114705A
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房轶群
张军华
徐建洪
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Jiangsu Ousheng New Material Co ltd
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Abstract

本发明属于新型材料领域,具体公开了一种高效抗菌新材料的制备方法,通过选择壳聚糖、乙酸水溶液、Cu(NO3)­­2溶液、去离子水、硼氢化钠、硅烷改性后钛白粉作为主要材料,进行壳聚糖表面固定铜离子、原位还原、低温水热处理及掺杂二氧化钛顺序制备,本发明的有益效果:本发明中的高效抗菌新材料壳聚糖表面固定铜离子、原位还原、低温水热处理及掺杂二氧化钛顺序制备,其中使用到的原材料都是相对常见而且价格便宜的,降低了有机无机复合抗菌剂的制备成本,且对人体更加友好,将其用于地板、木板中更加适合居住与办公。

Description

一种高效抗菌新材料的制备方法
技术领域
本发明属于新型材料领域,具体涉及一种高效抗菌新材料的制备方法。
背景技术
常用的抗菌剂根据其组成和结构不同,可以分为有机抗菌剂、无机抗菌剂及复合抗菌剂。有机抗菌剂包括天然有机抗菌剂和合成有机抗菌剂。天然抗菌剂如壳聚糖等,来源于改性处理的天然提取物;其生物相容性好、安全无毒;但是加工困难、耐热性差。合成有机抗菌剂如季铵盐类等;杀菌速度快、抗菌广谱性好、分散性好方便配制;但化学稳定性差、遇高温高压易分解出有毒产物、抗菌性能不长久且容易产生耐药菌;无机抗菌剂是应用最广泛的一类抗菌剂,主要为一些金属及其化合物,其耐热性好、抗菌谱广、可长效抗菌、毒性低、且不产生耐药性等优点,但其价格较贵,具有较强的光敏效应,如银系抗菌剂,或者需要紫外光激活才能发挥作用,如光催化类抗菌剂等。
针对上述的问题,复合型抗菌剂为了解决单一抗菌剂使用时带来的限制问题,克服他们相应的缺点而逐渐发展起来的一类新型抗菌剂。其具有高抗菌性能,可减少溶出,或者控制释放,毒性低,更加稳定,良好的改善了材料的抗菌效果和抗菌时长。同时,其对人和环境的损害也能得到明显的降低,既能符合绿色化学理念的标准,又能维护人类的健康,成为了最近抗菌剂的研究热点。
发明内容
复合抗菌剂作为新的研究热点,其需要改进的地方很多,针对一直居高不下的生产成本,本发明公开了一种高效抗菌新材料的制备方法,具体技术方案如下:
一种高效抗菌新材料的制备方法,具体步骤如下:
步骤一:选择壳聚糖、铜离子与二氧化钛作为基体抗菌材料;
步骤二:使用的溶剂与试剂为乙酸水溶液、Cu(NO3)2溶液、去离子水、硼氢化钠、硅烷改性后钛白粉;
步骤三:将步骤一中的壳聚糖,与步骤二中的乙酸水溶液混合,在搅拌器中搅拌均匀;
步骤四:待步骤三中壳聚糖完全溶解后加入Cu(NO3)2溶液和去离子水,继续搅拌使得铜离子与壳聚糖充分反应;
步骤五:向步骤四中的反应液中加入硼氢化钠溶液和硅烷改性后钛白粉,在50-70℃水浴中,搅拌,自然冷却至室温;
步骤六:将步骤五得到的物质过滤烘干,研磨后得到壳聚糖/铜离子/二氧化钛复合抗菌剂。
本发明中,采用壳聚糖作为抗菌材料的模板,具有绿色、环保的效果,其中有大量的活性氨基可以络合大部分金属金属,使得其络合铜和钛离子,固定在壳聚糖的表面,然后加入剩余试剂使其还原,仔进行过滤烘干研磨等步骤得到一类壳聚糖/铜离子/二氧化钛纳米颗粒复合抗菌剂。
传统采用银离子,但是银的成本高,其次大量使用对人的身体有害处,而铜离子的价格更低,成本也低,针对其耐热性略差的特性,经过大量研究,掺杂二氧化钛可以提高其耐热性,锐钛型二氧化钛属于光催化型抗菌剂,在紫外光照射下,价带中的电子跃迁形成光生电子而产生的空穴,产生大量具有强化学活性的羟基自由基和超氧化物阴离子自由基,细菌接触这些时,体内的有机物被氧化成水和二氧化碳,从而快速杀菌,具有非常优良的杀菌效果。
作为进一步的改进,其特征在于:所述乙酸水溶液浓度为2%。
作为进一步的改进,其特征在于:所述步骤五中的搅拌方法为超声分散法,温度为60℃。
超声分散法,具有很好的搅拌效果,能加快反应进程。
作为进一步的改进,其特征在于:所述步骤五中搅拌至混合溶液颜色稳定后自然冷却。
作为进一步的改进,其特征在于:所述Cu(NO3)2溶液浓度为40-60mmol/L,一般选50 mmol/L。
作为进一步的改进,其特征在于:所述硼氢化钠溶液的浓度为0.08-0.12mol/L,一般选0.1 mol/L。
本发明的有益效果:本发明中的高效抗菌新材料壳聚糖表面固定铜离子、原位还原、低温水热处理及掺杂二氧化钛顺序制备,其中使用到的原材料都是相对常见而且价格便宜的,降低了有机无机复合抗菌剂的制备成本,且对人体更加友好,将其用于地板、木板中更加适合居住与办公。
具体实施方式
为了加深对本发明的理解,下面将结合实施例对本发明做进一步详细描述,该实施例仅用于解释本发明,并不对保护范围构成限定。
一种高效抗菌新材料的制备方法,具体步骤如下:
步骤一:选择壳聚糖、铜离子与二氧化钛作为基体抗菌材料;
步骤二:使用的溶剂与试剂为乙酸水溶液、Cu(NO3)2溶液、去离子水、硼氢化钠、硅烷改性后钛白粉;其中铜离子的来源为Cu(NO3)2溶液,二氧化钛来源为硅烷改性后钛白粉;
步骤三:称取壳聚糖2g,与100ml质量分数为2%的乙酸水溶液混合,在搅拌器中搅拌均匀;
步骤四:待步骤三中壳聚糖完全溶解后加入Cu(NO3)2溶液和去离子水,继续搅拌使得铜离子与壳聚糖充分反应;
步骤五:向步骤四中的反应液中加入5ml0.1mol/L的硼氢化钠溶液和0.2g硅烷改性后钛白粉,在60℃水浴中,超声搅拌,混合溶液颜色稳定后自然冷却至室温;
步骤六:将步骤五得到的物质过滤烘干,研磨后得到壳聚糖/铜离子/二氧化钛复合抗菌剂。
本实施例中用到的材料均是易得且廉价的,壳聚糖本身来源广泛,并且天然无毒,本身也可以降解再生,其单独作为抗菌剂使用时,具有较差的抗菌能力,这实施例中通过螯合作用加入铜离子和钛离子,其对身体和环境更友好,其中锐钛型二氧化钛属于光催化型抗菌剂,具有很强额度耐热性,这样得到的壳聚糖/铜离子/二氧化钛复合抗菌剂具有很良好的耐热性,通过紫外光照射,价带中的电子跃迁形成光生电子而产生的空穴,产生大量且具有强化学活性的羟基自由基和超氧化物阴离子自由基,细菌接触这些自由基时,体内有机物被氧化成水和二氧化碳从而实现快速杀菌。

Claims (6)

1.一种高效抗菌新材料的制备方法,具体步骤如下:
步骤一:选择壳聚糖、铜离子与二氧化钛作为基体抗菌材料;
步骤二:使用的溶剂与试剂为乙酸水溶液、Cu(NO3)2溶液、去离子水、硼氢化钠、硅烷改性后钛白粉;
步骤三:将步骤一中的壳聚糖,与步骤二中的乙酸水溶液混合,在搅拌器中搅拌均匀;
步骤四:待步骤三中壳聚糖完全溶解后加入Cu(NO32溶液和去离子水,继续搅拌使得铜离子与壳聚糖充分反应;
步骤五:向步骤四中的反应液中加入硼氢化钠溶液和硅烷改性后钛白粉,在50-70℃水浴中,搅拌,自然冷却至室温;
步骤六:将步骤五得到的物质过滤烘干,研磨后得到壳聚糖/铜离子/二氧化钛复合抗菌剂。
2.根据权利要求1所述的一种高效抗菌新材料的制备方法,其特征在于:所述乙酸水溶液浓度为2%。
3.根据权利要求1所述的一种高效抗菌新材料的制备方法,其特征在于:所述步骤五中的搅拌方法为超声分散法,温度为60℃。
4.根据权利要求1所述的一种高效抗菌新材料的制备方法,其特征在于:所述步骤五中搅拌至混合溶液颜色稳定后自然冷却。
5.根据权利要求1所述的一种高效抗菌新材料的制备方法,其特征在于:所述Cu(NO32溶液浓度为40-60mmol/L。
6.根据权利要求1所述的一种高效抗菌新材料的制备方法,其特征在于:所述硼氢化钠溶液的浓度为0.08-0.12mol/L。
CN202211436989.1A 2022-11-16 2022-11-16 一种高效抗菌新材料的制备方法 Pending CN116114705A (zh)

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