CN116334948B - 聚吡咯/银/纤维素复合纸基材料及其制备方法与应用 - Google Patents
聚吡咯/银/纤维素复合纸基材料及其制备方法与应用 Download PDFInfo
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Abstract
本发明公开了一种聚吡咯/银/纤维素复合纸基材料,由负载有银颗粒的聚吡咯,在棉质纤维素纤维的表面自组装,填充纤维与纤维之间的空隙,形成导电通路制成。同时公开了该复合纸基材料的制备方法,该复合纸基材料在传感器上的应用。本发明通过合理的材料设计,构建了一种新型复合柔性纸基材料,它由负载有银颗粒的聚吡咯,在纤维素纤维的表面自组装,填充纤维与纤维之间的空隙,形成导电通路;该聚吡咯/银/纤维素复合柔性纸基材料,可实现对pH、水雾、呼吸和指压这四种外界激励的响应。
Description
技术领域
本发明涉及柔性传感材料领域,尤其涉及一种聚吡咯/银/纤维素复合纸基材料及其制备方法与应用。
背景技术
传感器是将温度、湿度、声、光等物理化学刺激按照一定规律转化为电信号输出的一种检测装置。高性能、低成本的柔性电子器件在传感领域具有广泛的应用需求。传统的柔性电子器件多以聚合物材料为基底,合成过程复杂,且废弃器件难以生物降解,不可避免地会带来二次环境污染。
和以聚合物材料为基底的传感材料相比,以天然纤维素为基底的柔性传感材料,逐步受到关注并成为研究热点。纤维素是是地球上存量最丰富的天然高分子材料,具有良好的生物相容性和生物降解性、易于加工成多种形态的材料、还具有独特的表面电荷/化学性质、优异的物理机械性能等综合优点。以天然纤维素为基质的纸张,来源广泛,低成本,可再生利用,可生物降解,以其作为基底,可为柔性传感器的制备和性能提升提供新的发展方向,天然纤维素及其衍生物作为基底构建的柔性纸质基底传感材料,展现出独特的优势,在生物物理传感器、生物化学传感器、环境传感器以及自供电传感器等领域体现出较高的应用潜力。
然而,已报道的以天然纤维素为基底的柔性传感材料的制备方法,往往需要较为复杂的制备工序和较长的制备周期;另一方面,已报道的以天然纤维素为基底的柔性传感材料,往往只能对1~2种外界激励作出响应行为,尚难以对多种外界激励发生响应,这限制了此类材料的应用领域。
因此需要针对性开发新型天然纤维素为基底的柔性传感材料,简化制备方法,提高材料在多种领域的应用潜力。
发明内容
发明目的:针对现有技术的不足与缺陷,本发明提供一种聚吡咯/银/纤维素复合纸基材料及其制备方法与应用,通过合理的材料设计,构建了一种聚吡咯/银/纤维素复合柔性纸基材料,它由负载有银颗粒的聚吡咯,在纤维素纤维的表面自组装,填充纤维与纤维之间的空隙,形成导电通路;该聚吡咯/银/纤维素复合柔性纸基材料,可实现对pH、水雾、呼吸和指压这四种外界激励的响应。
技术方案:本发明的聚吡咯/银/纤维素复合纸基材料,由负载有银颗粒的聚吡咯,在棉质纤维素纤维的表面自组装,填充纤维与纤维之间的空隙,形成导电通路制成。
其中,所述的棉质纤维素纤维为天然棉质纤维素纤维,直径为10μm-30μm。
其中,所述的负载有银颗粒的聚吡咯中,银颗粒与导电聚合物聚吡咯之间形成金属/有机半导体异质结。
其中,所述的聚吡咯的重量百分比为2%-4%,银颗粒的重量百分比为1%-2%,纤维素的重量百分比94%-97%。
其中,所述的表面负载有金属纳米颗粒的长余辉发光材料中,长余辉发光材料的重量百分比为99%-99.9%,表面负载有金属纳米颗粒的重量百分比为0.1%-1%。
本发明的聚吡咯/银/纤维素复合纸基材料的制备方法,包括下述步骤:
1)采用紫外辐照法,将银颗粒负载在聚吡咯上,形成银颗粒与导电聚合物聚吡咯之间的异质结,得到负载有银颗粒的聚吡咯;
2)将负载有银颗粒的聚吡咯分散在有机溶剂中;
3)利用棉质纤维素滤纸自身的毛细管力作为自驱力,促使分散在有机溶剂中的负载有银颗粒的聚吡咯,随着有机溶剂一起被驱入滤纸中,在棉质纤维素纤维的表面自组装,填充纤维与纤维之间的空隙,真空干燥,待有机溶剂自然挥发后,形成导电通路,即得聚吡咯/银/纤维素复合柔性纸基材料。
其中,所述的步骤1)中将醋酸银溶解于N-N二甲基甲酰胺溶液中,向该溶液中加入吡咯,并超声10min-20min,将该溶液置于8W的紫外灯下辐照4h-12h,即得负载有银颗粒的聚吡咯。
其中,所述的N-N二甲基甲酰胺溶液中,醋酸银的浓度为0.36mol/L-0.45mol/L,吡咯的浓度为0.5mol/L-1mol/L;所述的紫外灯的波长为365nm。
其中,所述的步骤3)中,将棉质纤维素滤纸浸入分散了负载有银颗粒的聚吡咯的有机溶剂中1s-5s后取出,即得聚吡咯/银/纤维素复合柔性纸基材料。
本发明的聚吡咯/银/纤维素复合纸基材料在传感器上的应用。
包括下述方面:
1)聚吡咯/银/纤维素复合柔性纸基材料体现出对pH刺激的响应,在不同pH值环境中,聚吡咯/银/纤维素复合柔性纸基材料的颜色发生变化,实现对pH的传感;
2)聚吡咯/银/纤维素复合柔性纸基材料体现出对水雾刺激的响应,当聚吡咯/银/纤维素复合柔性纸基材料接触到水雾时,电导率增大,关闭水雾时,电导率降低,且电导率变化可逆,实现对水雾的传感;
3)聚吡咯/银/纤维素复合柔性纸基材料体现出对呼吸的响应,当聚吡咯/银/纤维素复合柔性纸基材料接触到人呼出的气体时,电导率增大,停止呼气,电导率降低,且电导率变化可逆,实现对呼吸的传感;
4)聚吡咯/银/纤维素复合柔性纸基材料体现出对指压的响应,用手指按压聚吡咯/银/纤维素复合柔性纸基材料,电导率增大,停止按压,电导率降低,且电导率变化可逆,实现对指压的传感。
有益效果:与现有技术相比,本发明具有以下显著优点:本发明构建的聚吡咯/银/纤维素复合柔性纸基材料,成本低廉,具有良好的柔性、可折叠性及便携性。本发明利用聚吡咯与银之间的异质结,在不同pH值环境中,因载流子在聚吡咯与银之间的转移,导致聚吡咯中偶极子的浓度发生变化,聚吡咯/银/纤维素复合柔性纸基材料的颜色随之发生变化,可实现对pH的灵敏传感。
本发明构建的聚吡咯/银/纤维素复合柔性纸基材料,负载有银颗粒的聚吡咯与纤维素纤维之间形成有效连接和协同效应,使该材料对水雾、呼吸和指压具有灵敏、可逆的响应,体现出应用于湿度传感、呼吸传感和指压传感领域的潜力。
本发明聚吡咯/银/纤维素复合柔性纸基材料的制备,是利用棉质纤维素滤纸自身的毛细管力作为自驱力,促使分散在有机溶剂中的负载有银颗粒的聚吡咯,随着有机溶剂一起被驱入滤纸中,在棉质纤维素纤维的表面自组装,填充纤维与纤维之间的空隙,待有机溶剂自然挥发后,形成导电通路;无需特殊设备和苛刻条件,制备方法简单、工艺快速易行,容易实现大面积制备和规模化生产。
附图说明
图1为本发明的复合柔性纸基材料的制备流程图;
图2为本发明实施例1的复合柔性纸基材料的FESEM图;
图3为本发明实施例1的复合柔性纸基材料对pH的响应图及复合柔性纸基材料在pH=7和pH=8条件下的紫外-可见漫反射光谱图;
图4为本发明实施例2的复合柔性纸基材料对水雾的响应图;
图5为本发明实施例2的复合柔性纸基材料对水雾响应的机理图;
图6为本发明实施例3的复合柔性纸基材料对呼吸的响应图;
图7为本发明实施例3的复合柔性纸基材料对呼吸响应的机理图;
图8为本发明实施例3的复合柔性纸基材料对指压的响应图;
图9为本发明实施例3的复合柔性纸基材料对指压响应的机理图。
具体实施方式
下面结合附图及具体实施方式对本发明的技术方案做进一步的描述。
实施例1:
本实施例的聚吡咯/银/纤维素复合柔性纸基材料由负载有银颗粒的聚吡咯,在直径为10μm-30μm的天然棉质纤维素纤维的表面自组装,填充纤维与纤维之间的空隙,形成导电通路制成。具体制备方法如下:
1)将醋酸银溶解于N-N二甲基甲酰胺溶液中,醋酸银的浓度为0.36mol/L;向该溶液中加入吡咯,吡咯的浓度为0.5mol/L,超声10min,将该溶液置于功率为8W、波长为365nm的紫外灯下辐照4h,银离子引发吡咯单体的氧化聚合,银离子被还原为银单质,即得负载有银颗粒的聚吡咯,其中,银颗粒与导电聚合物聚吡咯之间形成金属/半导体异质结。
2)将负载有银颗粒的聚吡咯分散于N-N二甲基甲酰胺溶液中。
3)将棉质纤维素滤纸浸入负载有银颗粒的聚吡咯的N-N二甲基甲酰胺溶液中3s,利用棉质纤维素滤纸自身的毛细管力作为自驱力,促使分散在有机溶剂中的负载有银颗粒的聚吡咯,随着有机溶剂一起被驱入滤纸中,在棉质纤维素纤维的表面自组装,填充纤维与纤维之间的空隙,待有机溶剂自然挥发后,形成导电通路,即得聚吡咯/银/纤维素复合柔性纸基材料。
本实施例获得的聚吡咯/银/纤维素复合柔性纸基材料的形貌和尺寸如附图2所示。附图3是本实施例的聚吡咯/银/纤维素复合柔性纸基材料在不同pH刺激下的响应,以及聚吡咯/银/纤维素复合柔性纸基材料在pH=7和pH=8条件下的紫外-可见漫反射光谱图。
如附图3所示,在不同pH值环境中,聚吡咯/银/纤维素复合柔性纸基材料的颜色发生变化,可实现对pH的传感;从附图3中还可见,当pH从7增加至8,聚吡咯/银/纤维素复合柔性纸基材料上聚吡咯中的偶极子浓度发生变化,偶极子浓度变化主要是由于pH值变化引起的载流子在聚吡咯/银异质结之间的输运引起的,这种效应使聚吡咯/银/纤维素复合柔性纸基材料的颜色发生了显著的变化。
实施例2:
本实施例的聚吡咯/银/纤维素复合柔性纸基材料由负载有银颗粒的聚吡咯,在直径为10μm-30μm的天然棉质纤维素纤维的表面自组装,填充纤维与纤维之间的空隙,形成导电通路制成。具体制备方法如下:
1)将醋酸银溶解于N-N二甲基甲酰胺溶液中,醋酸银的浓度为0.45mol/L;向该溶液中加入吡咯,吡咯的浓度为1mol/L,超声20min,将该溶液置于功率为8W、波长为365nm的紫外灯下辐照12h,银离子引发吡咯单体的氧化聚合,银离子被还原为银单质,即得负载有银颗粒的聚吡咯,其中,银颗粒与导电聚合物聚吡咯之间形成金属/半导体异质结。
2)将负载有银颗粒的聚吡咯分散于N-N二甲基甲酰胺溶液中。
3)将棉质纤维素滤纸浸入负载有银颗粒的聚吡咯的N-N二甲基甲酰胺溶液中4s,利用棉质纤维素滤纸自身的毛细管力作为自驱力,促使分散在有机溶剂中的负载有银颗粒的聚吡咯,随着有机溶剂一起被驱入滤纸中,在棉质纤维素纤维的表面自组装,填充纤维与纤维之间的空隙,待有机溶剂自然挥发后,形成导电通路,即得聚吡咯/银/纤维素复合柔性纸基材料。
附图4是本实施例的聚吡咯/银/纤维素复合柔性纸基材料对水雾刺激的响应图。附图5是本实施例的聚吡咯/银/纤维素复合柔性纸基材料对水雾刺激响应的机理图。
从附图4中可见,聚吡咯/银/纤维素复合柔性纸基材料对水雾激励体现出灵敏的响应和传感行为,在3轮循环实验中体现出稳定的响应行为;当聚吡咯/银/纤维素复合柔性纸基材料接触到水雾时(状态为on),聚吡咯/银/纤维素复合柔性纸基材料电流增大,说明其载流子传递能力增强;移除水雾时(状态为off),聚吡咯/银/纤维素复合柔性纸基材料电流减小,说明其载流子传递能力降低。
如附图5所示,当聚吡咯/银/纤维素复合柔性纸基材料接触到水雾时(状态为on),天然纤维素纤维表面及聚吡咯表面会通过氢键等方式结合水分子,天然纤维素纤维和聚吡咯形成的网络结构会发生形变,形成新的导电通路,这种效应使聚吡咯/银/纤维素复合柔性纸基材料的载流子输运能力增强,电流增大;移除水雾时(状态为off),水分子逐渐从天然纤维素纤维和聚吡咯的表面挥发,天然纤维素纤维和聚吡咯恢复原状,导电通路减少,因而聚吡咯/银/纤维素复合柔性纸基材料的电流降低,载流子传递能力降低恢复到起始状态。
实施例3:
本实施例的聚吡咯/银/纤维素复合柔性纸基材料由负载有银颗粒的聚吡咯,在直径为10μm-30μm的天然棉质纤维素纤维的表面自组装,填充纤维与纤维之间的空隙,形成导电通路制成。具体制备方法如下:
1)将醋酸银溶解于N-N二甲基甲酰胺溶液中,醋酸银的浓度为0.40mol/L;向该溶液中加入吡咯,吡咯的浓度为0.8mol/L,超声20min,将该溶液置于功率为8W、波长为365nm的紫外灯下辐照8h,银离子引发吡咯单体的氧化聚合,银离子被还原为银单质,即得负载有银颗粒的聚吡咯,其中,银颗粒与导电聚合物聚吡咯之间形成金属/半导体异质结。
2)将负载有银颗粒的聚吡咯分散于N-N二甲基甲酰胺溶液中。
3)将棉质纤维素滤纸浸入负载有银颗粒的聚吡咯的N-N二甲基甲酰胺溶液中3s,利用棉质纤维素滤纸自身的毛细管力作为自驱力,促使分散在有机溶剂中的负载有银颗粒的聚吡咯,随着有机溶剂一起被驱入滤纸中,在棉质纤维素纤维的表面自组装,填充纤维与纤维之间的空隙,待有机溶剂自然挥发后,形成导电通路,即得聚吡咯/银/纤维素复合柔性纸基材料。
附图6是本实施例的聚吡咯/银/纤维素复合柔性纸基材料对呼吸的响应图。附图7是本实施例的聚吡咯/银/纤维素复合柔性纸基材料对呼吸响应的机理图。
从附图6中可见,聚吡咯/银/纤维素复合柔性纸基材料对呼吸体现出灵敏的响应和传感行为,在3轮循环实验中体现出稳定的响应行为;外加呼吸激励(状态为on),聚吡咯/银/纤维素复合柔性纸基材料电流增大,说明其载流子传递能力增强;移除呼吸激励(状态为off),聚吡咯/银/纤维素复合柔性纸基材料电流减小,说明其载流子传递能力降低。
如附图7所示,因呼吸中含有水分子和CO2分子,当聚吡咯/银/纤维素复合柔性纸基材料接触到呼吸出的气体时(状态为on),天然纤维素纤维表面及聚吡咯表面会通过氢键等方式结合水分子,天然纤维素纤维和聚吡咯会发生形变,形成新的导电通路;同时,CO2的吸附还会导致其表面pH值发生轻微变化、导致偶极子浓度的变化,这些效应使聚吡咯/银/纤维素复合柔性纸基材料的载流子输运能力增强,电流增大;移除呼吸激励时(状态为off),水分子和CO2逐渐从天然纤维素纤维和聚吡咯的表面挥发,天然纤维素纤维和聚吡咯恢复原状,偶极子浓度回复到起始状态,因而导电通路减少,聚吡咯/银/纤维素复合柔性纸基材料的电流降低,载流子传递能力降低恢复到起始状态。
实施例4:
本实施例的聚吡咯/银/纤维素复合柔性纸基材料由负载有银颗粒的聚吡咯,在直径为10μm-30μm的天然棉质纤维素纤维的表面自组装,填充纤维与纤维之间的空隙,形成导电通路制成。具体制备方法如下:
1)将醋酸银溶解于N-N二甲基甲酰胺溶液中,醋酸银的浓度为0.60mol/L;向该溶液中加入吡咯,吡咯的浓度为0.6mol/L,超声20min,将该溶液置于功率为8W、波长为365nm的紫外灯下辐照6h,银离子引发吡咯单体的氧化聚合,银离子被还原为银单质,即得负载有银颗粒的聚吡咯,其中,银颗粒与导电聚合物聚吡咯之间形成金属/半导体异质结。
2)将负载有银颗粒的聚吡咯分散于N-N二甲基甲酰胺溶液中。
3)将棉质纤维素滤纸浸入负载有银颗粒的聚吡咯的N-N二甲基甲酰胺溶液中5s,利用棉质纤维素滤纸自身的毛细管力作为自驱力,促使分散在有机溶剂中的负载有银颗粒的聚吡咯,随着有机溶剂一起被驱入滤纸中,在棉质纤维素纤维的表面自组装,填充纤维与纤维之间的空隙,待有机溶剂自然挥发后,形成导电通路,即得聚吡咯/银/纤维素复合柔性纸基材料。
附图8是本实施例的聚吡咯/银/纤维素复合柔性纸基材料对手指压力(指压)的响应图。附图9是本实施例的聚吡咯/银/纤维素复合柔性纸基材料对指压响应的机理图。
从附图8中可见,聚吡咯/银/纤维素复合柔性纸基材料对指压体现出灵敏的响应和传感行为,在3轮循环实验中体现出稳定的响应行为;外加指压激励(状态为on),聚吡咯/银/纤维素复合柔性纸基材料电流增大,说明其载流子传递能力增强;移除指压激励(状态为off),聚吡咯/银/纤维素复合柔性纸基材料电流减小,说明其载流子传递能力降低。
如附图9所示,用手指对聚吡咯/银/纤维素复合柔性纸基材料施加压力(状态为on)时,天然纤维素纤维表面及聚吡咯表面会被压缩,天然纤维素纤维和聚吡咯形成的网络结构发生形变,导电通路之间的空隙减小,连接更加紧密,这种效应使聚吡咯/银/纤维素复合柔性纸基材料的载流子输运能力增强,电流增大;停止指压激励时(状态为off),天然纤维素纤维和聚吡咯恢复原状,导电通路恢复原状,因而载流子传递能力降低恢复到起始状态,聚吡咯/银/纤维素复合柔性纸基材料的电流降低。
本发明有益效果分析:
上述实施例中,负载有银颗粒的聚吡咯在棉质纤维素纤维表面与空隙之中的自组装与复合,是利用棉质纤维素滤纸自身的毛细管力作为自驱力,促使分散在有机溶剂中的负载有银颗粒的聚吡咯,随着有机溶剂一起被驱入滤纸中,在棉质纤维素纤维的表面自组装,填充纤维与纤维之间的空隙,待有机溶剂自然挥发后,形成导电通路,无需特殊设备和苛刻条件,制备方法简单、工艺快速易行,容易实现大面积制备和规模化生产。
上述实施例中,负载有银颗粒的聚吡咯及纤维素纤维之间形成协同左右,使聚吡咯/银/纤维素复合柔性纸基材料体现出对pH、水雾、呼吸、指压的这四种外界激励的灵敏响应。该聚吡咯/银/纤维素复合柔性纸基材料,可实现对pH、水雾、呼吸和指压这四种外界激励的响应,包括:利用负载有银颗粒的聚吡咯在不同pH值环境中偶极子浓度的变化,实现对pH的传感;还利用水雾、呼吸和指压这三种外界刺激下,纤维素纤维表面的负载有银颗粒的聚吡咯导电通路的物理应变和化学应变,实现了对湿度、呼吸和指压这三类外界刺激的响应。其中:
1)银颗粒与导电聚合物聚吡咯之间形成金属/半导体异质结,随着pH值的变化,载流子在聚吡咯/银异质结之间发生迁移,使聚吡咯/银/纤维素复合柔性纸基材料上聚吡咯中的偶极子浓度发生变化,使得聚吡咯/银/纤维素复合柔性纸基材料的颜色因而出现显著变化,有效提高了对pH刺激响应的灵敏性。
2)负载有银颗粒的聚吡咯及天然纤维素纤维之间具有协同作用,在吸附和富集水分子的过程中,天然纤维素纤维和聚吡咯形成的网络结构会发生形变,形成新的导电通路,增强了聚吡咯/银/纤维素复合柔性纸基材料的载流子输运能力,使其电流增大,体现出对水雾的灵敏响应。
3)负载有银颗粒的聚吡咯及天然纤维素纤维之间具有协同作用,在呼吸激励下,天然纤维素纤维和聚吡咯形成的网络结构因吸附和富集水分子会发生形变,形成新的导电通路,同时,CO2的吸附还会导致其表面pH值发生轻微变化、导致偶极子浓度的变化,这些效应增强了聚吡咯/银/纤维素复合柔性纸基材料的载流子输运能力,使其体现出对呼吸的灵敏响应。
4)负载有银颗粒的聚吡咯及天然纤维素纤维之间具有协同作用,用手指对聚吡咯/银/纤维素复合柔性纸基材料施加压力,天然纤维素纤维表面及聚吡咯表面会被压缩,天然纤维素纤维和聚吡咯形成的网络结构发生形变,导电通路之间的空隙减小,连接更加紧密,这种效应使聚吡咯/银/纤维素复合柔性纸基材料的载流子输运能力增强,使其体现出对指压的灵敏响应。
Claims (8)
1.聚吡咯/银/纤维素复合纸基材料的制备方法,其特征在于:由负载有银颗粒的聚吡咯,在棉质纤维素纤维的表面自组装,填充纤维与纤维之间的空隙,形成导电通路制成,具体包括下述步骤:
1)采用紫外辐照法,将银颗粒负载在聚吡咯上,形成银颗粒与导电聚合物聚吡咯之间的异质结,得到负载有银颗粒的聚吡咯;
2)将负载有银颗粒的聚吡咯分散在有机溶剂中;
3)利用棉质纤维素滤纸自身的毛细管力作为自驱力,促使分散在有机溶剂中的负载有银颗粒的聚吡咯,随着有机溶剂一起被驱入滤纸中,在棉质纤维素纤维的表面自组装,填充纤维与纤维之间的空隙,真空干燥,待有机溶剂自然挥发后,形成导电通路,即得聚吡咯/银/纤维素复合柔性纸基材料。
2.根据权利要求1所述的聚吡咯/银/纤维素复合纸基材料的制备方法,其特征在于:所述的棉质纤维素纤维为天然棉质纤维素纤维,直径为10μm-30μm。
3.根据权利要求1所述的聚吡咯/银/纤维素复合纸基材料的制备方法,其特征在于:所述的负载有银颗粒的聚吡咯中,银颗粒与导电聚合物聚吡咯之间形成金属/有机半导体异质结。
4.根据权利要求1所述的聚吡咯/银/纤维素复合纸基材料的制备方法,其特征在于:所述的聚吡咯的重量百分比为2%-4%,银颗粒的重量百分比为1%-2%,纤维素的重量百分比94%-97%。
5.根据权利要求1所述的聚吡咯/银/纤维素复合纸基材料的制备方法,其特征在于:所述的步骤1)中将醋酸银溶解于N-N二甲基甲酰胺溶液中,向该溶液中加入吡咯,并超声10min-20min,将该溶液置于8W的紫外灯下辐照4h-12h,即得负载有银颗粒的聚吡咯。
6.根据权利要求5所述的聚吡咯/银/纤维素复合纸基材料的制备方法,其特征在于:所述的N-N二甲基甲酰胺溶液中,醋酸银的浓度为0.36mol/L-0.45mol/L,吡咯的浓度为0.5mol/L-1mol/L;所述的紫外灯的波长为365nm。
7.根据权利要求1所述的聚吡咯/银/纤维素复合纸基材料的制备方法,其特征在于:所述的步骤3)中,将棉质纤维素滤纸浸入分散了负载有银颗粒的聚吡咯的有机溶剂中1s-5s后取出,即得聚吡咯/银/纤维素复合柔性纸基材料。
8.根据权利要求1-7中任一项所述的制备方法制备的聚吡咯/银/纤维素复合纸基材料在传感器上的应用,包括下述方面:
1)聚吡咯/银/纤维素复合柔性纸基材料体现出对pH刺激的响应,在不同pH值环境中,聚吡咯/银/纤维素复合柔性纸基材料的颜色发生变化,实现对pH的传感;
2)聚吡咯/银/纤维素复合柔性纸基材料体现出对水雾刺激的响应,当聚吡咯/银/纤维素复合柔性纸基材料接触到水雾时,电导率增大,关闭水雾时,电导率降低,且电导率变化可逆,实现对水雾的传感;
3)聚吡咯/银/纤维素复合柔性纸基材料体现出对呼吸的响应,当聚吡咯/银/纤维素复合柔性纸基材料接触到人呼出的气体时,电导率增大,停止呼气,电导率降低,且电导率变化可逆,实现对呼吸的传感;
4)聚吡咯/银/纤维素复合柔性纸基材料体现出对指压的响应,用手指按压聚吡咯/银/纤维素复合柔性纸基材料,电导率增大,停止按压,电导率降低,且电导率变化可逆,实现对指压的传感。
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