聚丙烯酰胺—制香业的应用

聚丙烯酰胺—制香业的应用

Polyacrylamide - Incense industry

阴离子聚丙烯酰胺具有溶解性好、粘度高、易燃物少烟、燃烧无异味、无毒等特点。用阴离子聚丙烯酰胺做粘结剂制成的香制品外表光洁平整、不易破碎、抗折力强、可燃性好。

Anionic polyacrylamide has good solubility, high viscosity, non odour producing when burned,non-toxic, etc. Incense products were made by combining anionic polyacrylamide ,appearance is bright and

clean ,nonbreakable, bending strength is strong, good combustibility.

阳离子聚丙烯酰胺 Cationic Polyacrylamide

产品特性 Product Features

该产品是由阳离子单体（DM、DMC、CPF、DMDAAC、DMAEMA等），和丙烯酰胺共聚，经造粒、干燥、粉碎而成。按照形态的不同可以分为固体颗粒及乳液两种形态。目前市场上应用最广泛的是固体颗粒状，呈白色。分子量比阴离子或非离子的聚合物低，澄清性能主要通过电荷中和作用获得。功能主要是絮凝带负电荷的胶体，具除浊、脱色功能。适用于有机胶体含量高的水处理。

The cationic monomer (DM, DMC, CPF, DMDAAC and DMAEMA, etc.) copoly with acryl amide. After granulation, drying and crushing, the product is formed. According to the different forms it can be pided into two forms: solid particles and the emulsion. On the market the most widely used product at present is solid granule which appears white. Molecular weight is lower than anionic or non-ionic polymer; clarify performance mainly realized by charge neutralization. The mainly function are flocculating negatively charged colloid, removing the turbidity, decolorizing. It is also applicable to the high content of organic colloid in water treatment.

为什么聚丙烯酰胺能在碱性条件下发生水解

摘要：为什么聚丙烯酰胺能在碱性条件下发生水解，聚丙烯酰胺碱性水解的一个显著特点是阴离子羧基的邻基效应导致水解反应呈现自阻滞效应，与聚丙烯酰胺酸性水解的邻基正催化作用相反...

为什么聚丙烯酰胺能在碱性条件下发生水解

聚丙烯酰胺碱性水解的一个显著特点是阴离子羧基的邻基效应导致水解反应呈现自阻滞效应，与聚丙烯酰胺酸性水解的邻基正催化作用相反，即随水解度的增加水解速率显著变慢。这是因为主链上引入的阴离子羧酸根基团一COO-对亲核基团OH-的静电排斥降低了酰氨基周围局部微环境中OH-的有效浓度这种邻基效应使聚丙烯酰胺碱性水解，在水解度小于30%时水解速率很快；在水解度达到40%以上时速率明显变慢；在较强的条件下(高浓度的碱和较高温度下水解度也只能达到70%；当残余酰氨基剩下30%时，水解速率极其缓慢，几乎不再进行。因此在碱性条件下水解聚丙烯酰胺，其水解度通常只能达到70%。