CN106280157A - 一种AgNO3/PVA复合膜的制备方法 - Google Patents

一种AgNO3/PVA复合膜的制备方法 Download PDF

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CN106280157A
CN106280157A CN201610655623.1A CN201610655623A CN106280157A CN 106280157 A CN106280157 A CN 106280157A CN 201610655623 A CN201610655623 A CN 201610655623A CN 106280157 A CN106280157 A CN 106280157A
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潘忠宁
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08J2329/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
    • C08J2329/02—Homopolymers or copolymers of unsaturated alcohols
    • C08J2329/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract

一种AgNO3/PVA复合膜的制备方法，包括如下步骤：将32份（重量份数，下同）PVA溶解于368份蒸馏水，形成8%的均相溶液；称量3份硝酸银溶解于5份蒸馏水中，完全溶解后加入到125份的8%的PVA水溶液中，保持搅拌1.5‑2h；将混合溶液涂覆在玻璃板上，室温下干燥36‑48h，揭膜然后将薄膜置于30‑35℃、恒湿(ＲH=60%)干燥36‑48h。本发明的有益效果是：具有操作简单，还原程度可控，所得到的聚合物薄膜具有导电性。

Description

一种AgNO3/PVA复合膜的制备方法
技术领域
本发明设计AgNO3/PVA复合膜，具体的是一种AgNO3/PVA复合膜的制备方法。
背景技术
金属-聚合物杂化纳米复合材料由于潜在具有金属和聚合物的优良特性备受关注。银-聚合物纳米复合材料属于金属聚合物杂化材料的一种，由于纳米银具有很稳定的物理化学性能，在电学、光学和催化等众多方面具有十分优异的性能。制备银聚合物复合材料的方法可以将制备好的纳米银粒子通过物理共混方法分散在聚合物基体中，其中纳米银粒子的制备方法有物理法和化学法，物理方法原理简单，缺点是对仪器设备要求高，生产成本高。化学法有溶胶凝胶法、电化学还原法、液相化学还原法、热处理法和光化学还原法等。化学法制备的银颗粒最小可达几纳米，得到的银颗粒不易转移和分散。最理想的制备银聚合物复合材料的方法是聚合物和银化合物在均相的状态下混合均匀，然后通过一定的处理方式实现银粒子的还原，从而获得掺杂均匀的复合材料。
发明内容
本发明所要解决的技术问题在于提供一种AgNO3/PVA复合膜的制备方法，解决现有物理化学方法所存在的问题。
本发明采用的制备方法，包括如下步骤：
a、将32份（重量份数，下同）PVA溶解于368份蒸馏水，形成8%的均相溶液；
b、称量3份硝酸银溶解于5份蒸馏水中，完全溶解后加入到125份的8%的PVA水溶液中，保持搅拌1.5-2h；
c、将混合溶液涂覆在玻璃板上，室温下干燥36-48h，揭膜然后将薄膜置于30-35℃、 恒湿(ＲH=60%)干燥36-48h。
本发明的有益效果是：具有操作简单，还原程度可控，所得到的聚合物薄膜具有导电性。
具体实施方式
以下结合实例进一步说明本发明的内容，由技术常识可知，本发明也可通过其它的不脱离本发明技术特征的方案来描述，因此所有在本发明范围内或等同本发明范围内的改变均被本发明包含。
实施例1：将32g PVA0588溶解于368g蒸馏水，形成8%的均相溶液；称量3g硝酸银溶解于5g蒸馏水中，完全溶解后加入到125g的8%的PVA水溶液中，保持搅拌1.5h；将混合溶液涂覆在玻璃板上，室温下干燥36h，揭膜然后将薄膜置于30℃、恒湿(ＲH=60%)干燥36h。
实施例2：将32g PVA0588溶解于368g蒸馏水，形成8%的均相溶液；称量3g硝酸银溶解于5g蒸馏水中，完全溶解后加入到125g的8%的PVA水溶液中，保持搅拌2h；将混合溶液涂覆在玻璃板上，室温下干燥48h，揭膜然后将薄膜置于35℃、恒湿(ＲH = 60%)干燥48h。
所得的AgNO3/PVA膜厚度约为60～70μm，硝酸银相当于聚乙烯醇的质量分数为30%(30wt%)。
硝酸银的加入显著改变了PVA的热性能，根据实验DSC曲线在180℃出现一个明显的放热峰， PVA的熔融峰消失。TG分析表明150～210℃，质量损失约为16%，最大失重率在180℃。XＲD和SEM表明单质银的生成和在薄膜表面富集。随着热处理温度的增加，银纳米粒子尺寸也增大，纳米粒子相互靠近并聚集。随着温度的增加，表面导电率缓慢增加。当温度从150℃升至180℃，薄膜表面电导率从3.16×10－9S·cm－1增加至2.05×10－3S·cm－1，增加了6个数量级。这种温度敏感性的材料在温度触发传感器和温度报警领域有潜在的运用。

Claims (1)

1.一种AgNO3/PVA复合膜的制备方法，包括如下步骤：
a、将32份（重量份数，下同）PVA溶解于368份蒸馏水，形成8%的均相溶液；
b、称量3份硝酸银溶解于5份蒸馏水中，完全溶解后加入到125份的8%的PVA水溶液中，保持搅拌1.5-2h；
c、将混合溶液涂覆在玻璃板上，室温下干燥36-48h，揭膜然后将薄膜置于30-35℃、 恒湿(ＲH=60%)干燥36-48h。
CN201610655623.1A 2016-08-11 2016-08-11 一种AgNO3/PVA复合膜的制备方法 Pending CN106280157A (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101344484A (zh) * 2008-09-01 2009-01-14 楚雄师范学院 高效检测生物大分子和微生物纳米银膜制备方法
CN101717522A (zh) * 2009-12-01 2010-06-02 西安交通大学 具有电阻突变性的复合高分子薄膜材料的制备方法
CN101759374A (zh) * 2008-12-25 2010-06-30 西北工业大学 一种基于三维纳米银树枝状结构的可见光频段左手超材料的制备方法
CN103614863A (zh) * 2013-12-19 2014-03-05 哈尔滨工业大学 Pva/金属纳米粒子复合纳米纤维膜的制备方法
CN104558993A (zh) * 2014-12-24 2015-04-29 武汉工程大学 一种改性聚乙烯醇薄膜及其制备方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101344484A (zh) * 2008-09-01 2009-01-14 楚雄师范学院 高效检测生物大分子和微生物纳米银膜制备方法
CN101759374A (zh) * 2008-12-25 2010-06-30 西北工业大学 一种基于三维纳米银树枝状结构的可见光频段左手超材料的制备方法
CN101717522A (zh) * 2009-12-01 2010-06-02 西安交通大学 具有电阻突变性的复合高分子薄膜材料的制备方法
CN103614863A (zh) * 2013-12-19 2014-03-05 哈尔滨工业大学 Pva/金属纳米粒子复合纳米纤维膜的制备方法
CN104558993A (zh) * 2014-12-24 2015-04-29 武汉工程大学 一种改性聚乙烯醇薄膜及其制备方法

Non-Patent Citations (1)

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Title
张杰等: "聚乙烯醇基热致导电复合膜的制备", 《化学研究与应用》 *

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