CN115874445A - Amino modified calcium alginate fiber non-woven fabric and preparation method thereof - Google Patents
Amino modified calcium alginate fiber non-woven fabric and preparation method thereof Download PDFInfo
- Publication number
- CN115874445A CN115874445A CN202211613243.3A CN202211613243A CN115874445A CN 115874445 A CN115874445 A CN 115874445A CN 202211613243 A CN202211613243 A CN 202211613243A CN 115874445 A CN115874445 A CN 115874445A
- Authority
- CN
- China
- Prior art keywords
- calcium alginate
- alginate fiber
- woven fabric
- fiber non
- amino
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 140
- 239000000835 fiber Substances 0.000 title claims abstract description 78
- 238000002360 preparation method Methods 0.000 title claims abstract description 28
- -1 Amino modified calcium alginate Chemical class 0.000 title claims abstract 14
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims abstract description 74
- 239000007864 aqueous solution Substances 0.000 claims abstract description 70
- OKHHGHGGPDJQHR-YMOPUZKJSA-L calcium;(2s,3s,4s,5s,6r)-6-[(2r,3s,4r,5s,6r)-2-carboxy-6-[(2r,3s,4r,5s,6r)-2-carboxylato-4,5,6-trihydroxyoxan-3-yl]oxy-4,5-dihydroxyoxan-3-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylate Chemical compound [Ca+2].O[C@@H]1[C@H](O)[C@H](O)O[C@@H](C([O-])=O)[C@H]1O[C@H]1[C@@H](O)[C@@H](O)[C@H](O[C@H]2[C@H]([C@@H](O)[C@H](O)[C@H](O2)C([O-])=O)O)[C@H](C(O)=O)O1 OKHHGHGGPDJQHR-YMOPUZKJSA-L 0.000 claims abstract description 58
- 239000000648 calcium alginate Substances 0.000 claims abstract description 37
- 235000010410 calcium alginate Nutrition 0.000 claims abstract description 37
- 229960002681 calcium alginate Drugs 0.000 claims abstract description 37
- 239000000243 solution Substances 0.000 claims abstract description 36
- 229920000587 hyperbranched polymer Polymers 0.000 claims abstract description 31
- 238000001035 drying Methods 0.000 claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 238000005406 washing Methods 0.000 claims abstract description 8
- 238000002791 soaking Methods 0.000 claims abstract description 5
- 238000001125 extrusion Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 6
- 230000035484 reaction time Effects 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 34
- RVPVRDXYQKGNMQ-UHFFFAOYSA-N lead(2+) Chemical compound [Pb+2] RVPVRDXYQKGNMQ-UHFFFAOYSA-N 0.000 abstract description 7
- 238000004381 surface treatment Methods 0.000 abstract description 4
- 239000004744 fabric Substances 0.000 abstract description 3
- 239000010865 sewage Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009776 industrial production Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 description 43
- 230000000052 comparative effect Effects 0.000 description 25
- 230000004048 modification Effects 0.000 description 22
- 238000012986 modification Methods 0.000 description 22
- 229910001385 heavy metal Inorganic materials 0.000 description 14
- 125000003277 amino group Chemical group 0.000 description 10
- 238000003825 pressing Methods 0.000 description 8
- 150000002500 ions Chemical class 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000005265 energy consumption Methods 0.000 description 6
- 125000003172 aldehyde group Chemical group 0.000 description 5
- 238000007602 hot air drying Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 239000007795 chemical reaction product Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000007086 side reaction Methods 0.000 description 3
- 241001474374 Blennius Species 0.000 description 2
- 235000010443 alginic acid Nutrition 0.000 description 2
- 229920000615 alginic acid Polymers 0.000 description 2
- 239000012620 biological material Substances 0.000 description 2
- 238000009388 chemical precipitation Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000000909 electrodialysis Methods 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- FHVDTGUDJYJELY-UHFFFAOYSA-N 6-{[2-carboxy-4,5-dihydroxy-6-(phosphanyloxy)oxan-3-yl]oxy}-4,5-dihydroxy-3-phosphanyloxane-2-carboxylic acid Chemical compound O1C(C(O)=O)C(P)C(O)C(O)C1OC1C(C(O)=O)OC(OP)C(O)C1O FHVDTGUDJYJELY-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 229940072056 alginate Drugs 0.000 description 1
- 239000000783 alginic acid Substances 0.000 description 1
- 229960001126 alginic acid Drugs 0.000 description 1
- 150000004781 alginic acids Chemical class 0.000 description 1
- 231100000693 bioaccumulation Toxicity 0.000 description 1
- 238000013406 biomanufacturing process Methods 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 150000002466 imines Chemical class 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000008621 organismal health Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 125000001302 tertiary amino group Chemical group 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
Landscapes
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
Description
技术领域technical field
本发明属于织物表面处理技术领域，尤其涉及一种氨基改性海藻酸钙纤维非织造织物及其制备方法。The invention belongs to the technical field of fabric surface treatment, and in particular relates to an amino-modified calcium alginate fiber nonwoven fabric and a preparation method thereof.
背景技术Background technique
废水中的重金属铅离子毒性大，无法降解，长存于水中，危害着环境和人类的生命健康。重金属铅离子通常是在水中微量存在，通过生物富集作用对生物的健康产生严重影响。目前，去除废水中重金属铅离子的方法主要有化学沉淀法、电化学还原法、离子交换法、膜分离法和吸附法等。其中，化学沉淀法没有选择性，会造成二次污染；电化学还原成本较高、效率低；离子交换法成本高、应用范围有限、对污水要求高；膜分离法主要包括电渗析和反渗透法，电渗析虽然过滤效率高、可回收利用，但处理水量小、费用高，反渗透法去除率高、操作简便，但膜的强度低、寿命短，且易堵塞。吸附法因其制备简单、成本较低、选择性高、吸附剂可重复使用等优点被认为是一种最佳的吸附方法。鉴于此，重金属污水处理领域就要寻找一种优异的有效的低碳的净水方法。The heavy metal lead ions in wastewater are highly toxic, cannot be degraded, and remain in water for a long time, endangering the environment and human life and health. Heavy metal lead ions usually exist in trace amounts in water and have a serious impact on the health of organisms through bioaccumulation. At present, the methods for removing heavy metal lead ions in wastewater mainly include chemical precipitation, electrochemical reduction, ion exchange, membrane separation and adsorption. Among them, the chemical precipitation method has no selectivity and will cause secondary pollution; electrochemical reduction has high cost and low efficiency; ion exchange method has high cost, limited application range, and high requirements for sewage; membrane separation method mainly includes electrodialysis and reverse osmosis Although electrodialysis has high filtration efficiency and can be recycled, the amount of treated water is small and the cost is high. Reverse osmosis has a high removal rate and is easy to operate, but the strength of the membrane is low, the life is short, and it is easy to clog. Adsorption is considered to be the best adsorption method because of its advantages of simple preparation, low cost, high selectivity, and reusable adsorbent. In view of this, in the field of heavy metal sewage treatment, it is necessary to find an excellent and effective low-carbon water purification method.
海藻酸是海藻植物的组成部分，具有天然的生物相容性和生物可降解性，且拥有优良的吸湿、吸附重金属等特性。以海洋生物材料为原料制备的海藻酸盐纤维是生物制造产业的重要组成部分，其环境友好特性对于替代化石资源、发展循环经济、建设资源节约型和环境友好型社会具有重要意义。因此，针对海藻酸钙纤维(CA)增强重金属离子吸附性能的问题，本发明提出了新的表面处理方式。Alginic acid is a component of seaweed plants. It has natural biocompatibility and biodegradability, and has excellent moisture absorption and adsorption of heavy metals. Alginate fibers prepared from marine biological materials are an important part of the biomanufacturing industry, and their environmental friendliness is of great significance for replacing fossil resources, developing a circular economy, and building a resource-saving and environment-friendly society. Therefore, aiming at the problem that the calcium alginate fiber (CA) enhances the adsorption performance of heavy metal ions, the present invention proposes a new surface treatment method.
超支化聚合物(HBP)是一类与线性聚合物不同的高度支化的三维树状大分子材料，其支化点多，分子链不易缠结，且黏度不随着分子量的增加而改变，还具有丰富的末端官能团。端氨基超支化聚合物(HBP-NH2)是一种分子结构既不同于线型高分子聚合物，又不同于一般小分子化合物的准球型结构聚合物，HBP-NH2的分子表面含有极其丰富的氨基、亚胺基和叔胺基，使其成为优异的氨基改性剂。已广泛应用于涂层、纳米技术、添加剂和生物材料等领域。因其具有丰富的氨基官能团，能与多种重金属产生螯合作用去除水体中的重金属离子，也可应用于重金属吸附材料。CN109225174A公开了一种改性海藻酸钙纤维重金属吸附材料及其制备方法，以海藻酸钙纤维为主要原料，采用戊二醛与超支化聚合物，制备改性海藻酸钙纤维重金属吸附材料，改性前与改性后的海藻酸钙纤维的吸附量有很大的提升，但是该制备方法原料用量较大，造成浪费，生产成本较高；另外，采用海藻酸钙纤维，存在不易加工等问题，其改性方法中直接将超支化聚合物滴加入含有戊二醛(GA)的溶液中，使得超支化聚合物直接与溶液中的戊二醛发生反应，降低了在纤维上的有效反应率，同时大量无效反应产物附着于海藻酸钙表面，反而降低了原纤维的吸附性能。Hyperbranched polymers (HBP) are a kind of highly branched three-dimensional dendritic macromolecular materials different from linear polymers. It has abundant terminal functional groups. Amino-terminated hyperbranched polymer (HBP-NH 2 ) is a kind of quasi-spherical polymer whose molecular structure is different from linear polymers and general small molecular compounds. The molecular surface of HBP-NH 2 contains The extremely rich amino, imine and tertiary amino groups make it an excellent amino modifier. It has been widely used in the fields of coatings, nanotechnology, additives and biomaterials. Because of its rich amino functional groups, it can chelate with a variety of heavy metals to remove heavy metal ions in water, and can also be applied to heavy metal adsorption materials. CN109225174A discloses a modified calcium alginate fiber heavy metal adsorption material and its preparation method. The calcium alginate fiber is used as the main raw material, and glutaraldehyde and hyperbranched polymer are used to prepare the modified calcium alginate fiber heavy metal adsorption material. The adsorption capacity of calcium alginate fibers before and after modification has been greatly improved, but the preparation method uses a large amount of raw materials, resulting in waste and high production costs; in addition, the use of calcium alginate fibers has problems such as difficult processing. In the modification method, the hyperbranched polymer is directly added dropwise to a solution containing glutaraldehyde (GA), so that the hyperbranched polymer directly reacts with the glutaraldehyde in the solution, reducing the effective reaction rate on the fiber At the same time, a large number of ineffective reaction products are attached to the surface of calcium alginate, which reduces the adsorption performance of fibrils.
发明内容Contents of the invention
针对现有技术不足，本发明提供了一种氨基改性海藻酸钙纤维非织造织物的制备方法，该制备方法操作简单，稳定性好，成本较低，操作条件要求低，有利于进行大规模工业化生产；本发明另一目的在于提供一种具有优异重金属铅离子吸附能力的氨基改性海藻酸钙纤维非织造织物。Aiming at the deficiencies in the prior art, the present invention provides a method for preparing amino-modified calcium alginate fiber nonwoven fabrics. The preparation method is simple in operation, good in stability, low in cost, low in operating condition requirements, and is conducive to large-scale Industrialized production; Another object of the present invention is to provide an amino-modified calcium alginate fiber nonwoven fabric with excellent heavy metal lead ion adsorption capacity.
为了实现上述目的，本发明采用了如下技术方案：氨基改性海藻酸钙纤维非织造织物的制备方法，包括以下步骤：步骤1、将海藻酸钙纤维非织造织物经水洗后浸泡在戊二醛水溶液中反应，得到戊二醛接枝海藻酸钙纤维非织造织物；步骤2、对步骤1所得的戊二醛接枝海藻酸钙纤维非织造织物进行干燥处理；步骤3、将戊二醛接枝海藻酸钙纤维非织造织物浸泡在端氨基超支化聚合物溶液中反应，得到氨基改性海藻酸钙纤维非织造织物；步骤4、对步骤3所得的氨基改性海藻酸钙纤维非织造织物进行干燥处理。In order to achieve the above object, the present invention adopts the following technical scheme: the preparation method of the amino-modified calcium alginate fiber nonwoven fabric comprises the following steps: Step 1, soaking the calcium alginate fiber nonwoven fabric in glutaraldehyde after washing react in aqueous solution to obtain glutaraldehyde-grafted calcium alginate fiber nonwoven fabric; step 2, dry the glutaraldehyde-grafted calcium alginate fiber nonwoven fabric obtained in step 1; step 3, graft glutaraldehyde branched calcium alginate fiber nonwoven fabric is soaked in the amino-terminated hyperbranched polymer solution and reacted to obtain an amino-modified calcium alginate fiber nonwoven fabric; step 4, the amino-modified calcium alginate fiber nonwoven fabric obtained in step 3 Dry it.
进一步地，所述步骤1中水洗为去离子水超声水洗。Further, the washing in step 1 is ultrasonic washing with deionized water.
进一步地，所述步骤1中戊二醛水溶液浓度为5wt％～10wt％。Further, the concentration of glutaraldehyde aqueous solution in the step 1 is 5wt%-10wt%.
进一步地，所述步骤1中反应温度为50～60℃，反应时间为1小时。Further, in the step 1, the reaction temperature is 50-60° C., and the reaction time is 1 hour.
进一步地，所述步骤1中海藻酸钙纤维非织造织物与戊二醛的质量比为1:1～1:10。Further, in the step 1, the mass ratio of calcium alginate fiber nonwoven fabric to glutaraldehyde is 1:1-1:10.
进一步地，所述步骤3中端氨基超支化聚合物溶液的浓度为0.1～2g/L。Further, the concentration of the amino-terminated hyperbranched polymer solution in step 3 is 0.1-2 g/L.
进一步地，所述步骤3中藻酸钙纤维非织造织物与端氨基超支化聚合物溶液的质量比为1:1～1:40。Further, in the step 3, the mass ratio of the calcium alginate fiber nonwoven fabric to the amino-terminated hyperbranched polymer solution is 1:1-1:40.
进一步地，所述步骤3中反应温度为50～60℃，反应时间为30-60min。Further, in the step 3, the reaction temperature is 50-60° C., and the reaction time is 30-60 min.
进一步地，所述步骤2和步骤4中干燥处理为挤压辊挤压。Further, the drying treatment in step 2 and step 4 is extrusion with extrusion rolls.
上述制备方法得到的一种氨基改性海藻酸钙纤维非织造织物。An amino-modified calcium alginate fiber nonwoven fabric obtained by the above preparation method.
与现有技术相比，本发明具有以下有益效果：Compared with the prior art, the present invention has the following beneficial effects:
(1)本发明所用载体为海藻纤维非织造织物，有效避免了改性后纤维不易加工的情况，同时非织造织物富有强度却不紧实，兼顾了成型，良好的力学性能，对充分反应无影响的效果；(1) The carrier used in the present invention is a seaweed fiber nonwoven fabric, which effectively avoids the situation that the modified fiber is not easy to process. At the same time, the nonwoven fabric is rich in strength but not compact, taking into account molding, good mechanical properties, and no need for sufficient reaction. the effect of the influence;
(2)本发明制备方法低成本、低能耗。反应过程中所需介质皆为水溶液，绿色无毒，低成本，有利于工业生产；反应过程中所需温度范围较低，在50～60℃，降低能耗，降低生产成本；反应时间短，每一步都在30-60min，工艺步骤简单，能耗低；无需热风烘干，只需压辊挤压干燥，既避免了热风高能耗，同时避免了热风烘干造成的非织造织物硬度增加变脆吸附性能下降；(2) The preparation method of the present invention has low cost and low energy consumption. The medium required in the reaction process is all aqueous solution, which is green, non-toxic, and low-cost, and is conducive to industrial production; the temperature range required in the reaction process is relatively low, at 50-60 ° C, which reduces energy consumption and production costs; short reaction time, Each step takes 30-60 minutes, the process steps are simple, and the energy consumption is low; no hot air drying is required, only pressing rollers are needed to squeeze and dry, which not only avoids high energy consumption of hot air, but also avoids the increase in hardness of nonwoven fabrics caused by hot air drying. Decreased brittle adsorption performance;
(3)本发明能够有效提高吸附性能。通过提高接枝反应的针对性，避免加入的端氨基超支化聚合物大部分被溶液中残留的大量戊二醛消耗，节约了物料的同时，避免了大量无效反应产物附着于海藻酸钙表面造成吸附性能降低的问题。与现有技术相比，本发明吸附量提高了20％～40％，并且，现有技术吸附量极限不到800mg/g，而本发明在2500ppm铅溶液浓度下极限吸附量达到1100-1500mg/g。(3) The present invention can effectively improve the adsorption performance. By improving the pertinence of the grafting reaction, it is avoided that most of the added amino-terminated hyperbranched polymer is consumed by a large amount of glutaraldehyde remaining in the solution, saving materials and avoiding a large amount of invalid reaction products attached to the surface of calcium alginate. The problem of reduced adsorption performance. Compared with the prior art, the adsorption capacity of the present invention has been increased by 20% to 40%, and the limit of the adsorption capacity of the prior art is less than 800 mg/g, while the limit adsorption capacity of the present invention reaches 1100-1500 mg/g at a concentration of 2500 ppm lead solution. g.
附图说明Description of drawings
图1为本发明制备流程示意图。Figure 1 is a schematic diagram of the preparation process of the present invention.
具体实施方式Detailed ways
下面结合实施例对本发明作详细说明。The present invention is described in detail below in conjunction with embodiment.
实施例1Example 1
氨基改性海藻酸钙纤维非织造织物，其制备方法的流程示意图如图1所示，包括如下步骤：步骤1、制备浓度为5wt％的GA水溶液，将CA非织造织物浸泡于GA水溶液中，使CA非织造织物表面充分润湿于GA水溶液中并在50℃下持续1小时对其进行表面化学接枝改性处理，实现GA与海藻酸钙纤维表面基团-羟基的化学链接，即得CA-GA非织造织物；步骤2、对CA-GA非织造织物进行压辊挤压干燥处理，除去溶液中多余未反应的GA；步骤3、配制0.8g/L的HBP-NH2水溶液，将CA-GA非织造织物浸泡于HBP-NH2水溶液中，使CA-GA非织造织物表面充分润湿于HBP-NH2水溶液中并在50℃下对其进行表面化学接枝改性处理，实现氨基与CA-GA表面基团-醛基的化学链接，即得CA-GA-HBP-NH2非织造织物；步骤4、对CA-GA-HBP-NH2非织造织物进行压辊挤压干燥处理，除去溶液中多余未反应的HBP-NH2。Amino-modified calcium alginate fiber nonwoven fabric, the schematic flow chart of its preparation method is shown in Figure 1, comprises the following steps: Step 1, preparation concentration is the GA aqueous solution of 5wt%, soaks CA nonwoven fabric in GA aqueous solution, The surface of the CA nonwoven fabric is fully wetted in the GA aqueous solution, and the surface chemical grafting modification is carried out at 50 ° C for 1 hour to realize the chemical link between GA and the hydroxyl group on the surface of the calcium alginate fiber, that is, CA-GA nonwoven fabric; Step 2, carry out pressure roller extrusion drying process to CA-GA nonwoven fabric, remove unnecessary unreacted GA in the solution; Step 3, prepare the HBP- NH of 0.8g/L Aqueous solution, will Soak the CA-GA nonwoven fabric in the HBP-NH 2 aqueous solution, make the surface of the CA-GA nonwoven fabric fully wet in the HBP-NH 2 aqueous solution, and carry out surface chemical grafting modification treatment at 50 ° C to achieve The chemical link of amino group and CA-GA surface group-aldehyde group, promptly obtains CA-GA-HBP-NH 2 nonwoven fabric; Step 4, carries out pressure roller extrusion drying to CA-GA-HBP-NH 2 nonwoven fabric Treatment to remove excess unreacted HBP-NH 2 in the solution.
实施例2Example 2
氨基改性海藻酸钙纤维非织造织物，其制备方法包括如下步骤：步骤1、制备浓度为10wt％的GA水溶液，将CA非织造织物浸泡于GA水溶液中，使CA非织造织物表面充分润湿于GA水溶液中并在50℃下持续1小时对其进行表面化学接枝改性处理，实现GA与海藻酸钙纤维表面基团-羟基的化学链接，即得CA-GA非织造织物；步骤2、对CA-GA非织造织物进行压辊挤压干燥处理，除去溶液中多余未反应的GA；步骤3、配制0.8g/L的HBP-NH2水溶液，将CA-GA非织造织物浸泡于HBP-NH2水溶液中，使CA-GA非织造织物表面充分润湿于HBP-NH2水溶液中并在50℃下对其进行表面化学接枝改性处理，实现氨基与CA-GA表面基团-醛基的化学链接，即得CA-GA-HBP-NH2非织造织物；步骤4、对CA-GA-HBP-NH2非织造织物进行压辊挤压干燥处理，除去溶液中多余未反应的HBP-NH2。Amino-modified calcium alginate fiber nonwoven fabric, its preparation method comprises the following steps: Step 1, prepare the GA aqueous solution that concentration is 10wt%, soak CA nonwoven fabric in GA aqueous solution, make the surface of CA nonwoven fabric fully wet Carry out surface chemical graft modification treatment in GA aqueous solution at 50°C for 1 hour to realize the chemical link between GA and calcium alginate fiber surface group-hydroxyl, and obtain CA-GA nonwoven fabric; step 2 1. The CA-GA non-woven fabric is subjected to pressure roller extrusion drying to remove excess unreacted GA in the solution; step 3, prepare 0.8g/L of HBP-NH 2 aqueous solution, soak the CA-GA non-woven fabric in HBP -in NH 2 aqueous solution, make the surface of CA-GA nonwoven fabric fully wet in HBP-NH 2 aqueous solution and carry out surface chemical grafting modification treatment at 50°C, to realize amino group and CA-GA surface group- The chemical link of aldehyde group promptly gets CA-GA-HBP-NH 2 nonwoven fabrics; Step 4, carry out pressing roller extrusion drying process to CA-GA-HBP-NH 2 nonwoven fabrics, remove excess unreacted in the solution HBP- NH2 .
实施例3Example 3
氨基改性海藻酸钙纤维非织造织物，其制备方法包括如下步骤：步骤1、制备浓度为5wt％的GA水溶液，将CA非织造织物浸泡于GA水溶液中，使CA非织造织物表面充分润湿于GA水溶液中并在60℃下持续1小时对其进行表面化学接枝改性处理，实现GA与海藻酸钙纤维表面基团-羟基的化学链接，即得CA-GA非织造织物；步骤2、对CA-GA非织造织物进行压辊挤压干燥处理，除去溶液中多余未反应的GA；步骤3、配制0.8g/L的HBP-NH2水溶液，将CA-GA非织造织物浸泡于HBP-NH2水溶液中，使CA-GA非织造织物表面充分润湿于HBP-NH2水溶液中并在50℃下对其进行表面化学接枝改性处理，实现氨基与CA-GA表面基团-醛基的化学链接，即得CA-GA-HBP-NH2非织造织物；步骤4、对CA-GA-HBP-NH2非织造织物进行压辊挤压干燥处理，除去溶液中多余未反应的HBP-NH2。Amino-modified calcium alginate fiber nonwoven fabric, its preparation method comprises the following steps: step 1, prepare the GA aqueous solution that concentration is 5wt%, soak CA nonwoven fabric in GA aqueous solution, make the surface of CA nonwoven fabric fully wet Carry out surface chemical graft modification treatment in GA aqueous solution at 60°C for 1 hour to realize the chemical link between GA and calcium alginate fiber surface group-hydroxyl, and obtain CA-GA nonwoven fabric; step 2 1. The CA-GA non-woven fabric is subjected to pressure roller extrusion drying to remove excess unreacted GA in the solution; step 3, prepare 0.8g/L of HBP-NH 2 aqueous solution, soak the CA-GA non-woven fabric in HBP -in NH 2 aqueous solution, make the surface of CA-GA nonwoven fabric fully wet in HBP-NH 2 aqueous solution and carry out surface chemical grafting modification treatment at 50°C, to realize amino group and CA-GA surface group- The chemical link of aldehyde group promptly gets CA-GA-HBP-NH 2 nonwoven fabrics; Step 4, carry out pressing roller extrusion drying process to CA-GA-HBP-NH 2 nonwoven fabrics, remove excess unreacted in the solution HBP- NH2 .
实施例4Example 4
氨基改性海藻酸钙纤维非织造织物，其制备方法包括如下步骤：步骤1、制备浓度为5wt％的GA水溶液，将CA非织造织物浸泡于GA水溶液中，使CA非织造织物表面充分润湿于GA水溶液中并在50℃下持续30min对其进行表面化学接枝改性处理，实现GA与海藻酸钙纤维表面基团-羟基的化学链接，即得CA-GA非织造织物；步骤2、对CA-GA非织造织物进行压辊挤压干燥处理，除去溶液中多余未反应的GA；步骤3、配制0.8g/L的HBP-NH2水溶液，将CA-GA非织造织物浸泡于HBP-NH2水溶液中，使CA-GA非织造织物表面充分润湿于HBP-NH2水溶液中并在50℃下对其进行表面化学接枝改性处理，实现氨基与CA-GA表面基团-醛基的化学链接，即得CA-GA-HBP-NH2非织造织物；步骤4、对CA-GA-HBP-NH2非织造织物进行压辊挤压干燥处理，除去溶液中多余未反应的HBP-NH2。Amino-modified calcium alginate fiber nonwoven fabric, its preparation method comprises the following steps: step 1, prepare the GA aqueous solution that concentration is 5wt%, soak CA nonwoven fabric in GA aqueous solution, make the surface of CA nonwoven fabric fully wet In GA aqueous solution and at 50°C for 30 minutes, carry out surface chemical graft modification treatment to realize the chemical link between GA and calcium alginate fiber surface group-hydroxyl, and obtain CA-GA nonwoven fabric; step 2, The CA-GA nonwoven fabric is subjected to pressure roller extrusion drying to remove excess unreacted GA in the solution; step 3, prepare 0.8g/L of HBP-NH 2 aqueous solution, soak the CA-GA nonwoven fabric in HBP- In NH 2 aqueous solution, make the surface of CA-GA nonwoven fabric fully wet in HBP-NH 2 aqueous solution and carry out surface chemical grafting modification treatment at 50°C to realize the combination of amino group and CA-GA surface group-aldehyde The chemical link of base, obtains CA-GA-HBP-NH 2 nonwoven fabrics; Step 4, carry out pressing roller extrusion drying process to CA-GA-HBP-NH 2 nonwoven fabrics, remove excess unreacted HBP in the solution -NH2 .
实施例5Example 5
氨基改性海藻酸钙纤维非织造织物，其制备方法包括如下步骤：步骤1、制备浓度为5wt％的GA水溶液，将CA非织造织物浸泡于GA水溶液中，使CA非织造织物表面充分润湿于GA水溶液中并在50℃下持续1小时对其进行表面化学接枝改性处理，实现GA与海藻酸钙纤维表面基团-羟基的化学链接，即得CA-GA非织造织物；步骤2、对CA-GA非织造织物进行压辊挤压干燥处理，除去溶液中多余未反应的GA；步骤3、配制0.1g/L的HBP-NH2水溶液，将CA-GA非织造织物浸泡于HBP-NH2水溶液中，使CA-GA非织造织物表面充分润湿于HBP-NH2水溶液中并在50℃下对其进行表面化学接枝改性处理，实现氨基与CA-GA表面基团-醛基的化学链接，即得CA-GA-HBP-NH2非织造织物；步骤4、对CA-GA-HBP-NH2非织造织物进行压辊挤压干燥处理，除去溶液中多余未反应的HBP-NH2。Amino-modified calcium alginate fiber nonwoven fabric, its preparation method comprises the following steps: step 1, prepare the GA aqueous solution that concentration is 5wt%, soak CA nonwoven fabric in GA aqueous solution, make the surface of CA nonwoven fabric fully wet Carry out surface chemical graft modification treatment in GA aqueous solution at 50°C for 1 hour to realize the chemical link between GA and calcium alginate fiber surface group-hydroxyl, and obtain CA-GA nonwoven fabric; step 2 1. The CA-GA non-woven fabric is subjected to pressure roller extrusion drying to remove excess unreacted GA in the solution; Step 3, prepare 0.1g/L of HBP-NH 2 aqueous solution, soak the CA-GA non-woven fabric in HBP -in NH 2 aqueous solution, make the surface of CA-GA nonwoven fabric fully wet in HBP-NH 2 aqueous solution and carry out surface chemical grafting modification treatment at 50°C, to realize amino group and CA-GA surface group- The chemical link of aldehyde group promptly gets CA-GA-HBP-NH 2 nonwoven fabrics; Step 4, carry out pressing roller extrusion drying process to CA-GA-HBP-NH 2 nonwoven fabrics, remove excess unreacted in the solution HBP- NH2 .
实施例6Example 6
氨基改性海藻酸钙纤维非织造织物，其制备方法包括如下步骤：步骤1、制备浓度为5wt％的GA水溶液，将CA非织造织物浸泡于GA水溶液中，使CA非织造织物表面充分润湿于GA水溶液中并在50℃下持续1小时对其进行表面化学接枝改性处理，实现GA与海藻酸钙纤维表面基团-羟基的化学链接，即得CA-GA非织造织物；步骤2、对CA-GA非织造织物进行压辊挤压干燥处理，除去溶液中多余未反应的GA；步骤3、配制0.8g/L的HBP-NH2水溶液，将CA-GA非织造织物浸泡于HBP-NH2水溶液中，使CA-GA非织造织物表面充分润湿于HBP-NH2水溶液中并在60℃其进行表面化学接枝改性处理，实现氨基与CA-GA表面基团-醛基的化学链接，即得CA-GA-HBP-NH2非织造织物；步骤4、对CA-GA-HBP-NH2非织造织物进行压辊挤压干燥处理，除去溶液中多余未反应的HBP-NH2。Amino-modified calcium alginate fiber nonwoven fabric, its preparation method comprises the following steps: step 1, prepare the GA aqueous solution that concentration is 5wt%, soak CA nonwoven fabric in GA aqueous solution, make the surface of CA nonwoven fabric fully wet Carry out surface chemical graft modification treatment in GA aqueous solution at 50°C for 1 hour to realize the chemical link between GA and calcium alginate fiber surface group-hydroxyl, and obtain CA-GA nonwoven fabric; step 2 1. The CA-GA non-woven fabric is subjected to pressure roller extrusion drying to remove excess unreacted GA in the solution; step 3, prepare 0.8g/L of HBP-NH 2 aqueous solution, soak the CA-GA non-woven fabric in HBP -NH 2 aqueous solution, make the surface of CA-GA nonwoven fabric fully wet in HBP-NH 2 aqueous solution and carry out surface chemical grafting modification treatment at 60°C to realize amino group and CA-GA surface group-aldehyde group The chemical link of CA-GA-HBP-NH 2 non-woven fabrics is obtained; step 4, the CA-GA-HBP-NH 2 non-woven fabrics are subjected to pressure roller extrusion drying to remove excess unreacted HBP- NH2 .
对比例1Comparative example 1
海藻酸钙纤维非织造织物去离子水超声水洗。Ultrasonic washing of calcium alginate fiber nonwovens with deionized water.
对比例2Comparative example 2
氨基改性海藻酸钙纤维非织造织物，其制备方法包括如下步骤：步骤1、制备浓度为5wt％的GA水溶液，将CA非织造织物浸泡于GA水溶液中，使CA非织造织物表面充分润湿于GA水溶液中并在50℃下持续1小时对其进行表面化学接枝改性处理，实现GA与海藻酸钙纤维表面基团-羟基的化学链接，即得CA-GA非织造织物；步骤2配制0.8g/L的HBP-NH2水溶液，并滴入步骤1溶液体系中；步骤3、对CA-GA-HBP-NH2非织造织物进行压辊挤压干燥处理，除去溶液中多余未反应的HBP-NH2。Amino-modified calcium alginate fiber nonwoven fabric, its preparation method comprises the following steps: step 1, prepare the GA aqueous solution that concentration is 5wt%, soak CA nonwoven fabric in GA aqueous solution, make the surface of CA nonwoven fabric fully wet Carry out surface chemical graft modification treatment in GA aqueous solution at 50°C for 1 hour to realize the chemical link between GA and calcium alginate fiber surface group-hydroxyl, and obtain CA-GA nonwoven fabric; step 2 Prepare 0.8g/L of HBP- NH2 aqueous solution, and drop it into the solution system of step 1; step 3, carry out pressure roller extrusion drying process to CA-GA-HBP- NH2 nonwoven fabric, remove excess unreacted in the solution HBP-NH 2 .
对比例3Comparative example 3
氨基改性海藻酸钙纤维非织造织物，其制备方法包括如下步骤：步骤1、制备浓度为5wt％的GA水溶液，将CA织造织物浸泡于GA水溶液中，使CA非织造织物表面充分润湿于GA水溶液中并在50℃下持续1小时对其进行表面化学接枝改性处理，实现GA与海藻酸钙纤维表面基团-羟基的化学链接，即得CA-GA非织造织物；步骤2、对CA-GA非织造织物进行热风烘干干燥处理；步骤3、配制0.8g/L的HBP-NH2水溶液，将CA-GA非织造织物浸泡于HBP-NH2水溶液中，使CA-GA非织造织物表面充分润湿于HBP-NH2水溶液中并在50℃下对其进行表面化学接枝改性处理，实现氨基与CA-GA表面基团-醛基的化学链接，即得CA-GA-HBP-NH2非织造织物；步骤4、对CA-GA-HBP-NH2非织造织物进行压辊挤压干燥处理，除去溶液中多余未反应的HBP-NH2。Amino-modified calcium alginate fiber nonwoven fabric, its preparation method comprises the following steps: step 1, prepare the GA aqueous solution that concentration is 5wt%, soak CA woven fabric in GA aqueous solution, make the surface of CA nonwoven fabric fully wet in GA aqueous solution and at 50 ° C for 1 hour to carry out surface chemical grafting modification treatment to realize the chemical link between GA and calcium alginate fiber surface group-hydroxyl, to obtain CA-GA nonwoven fabric; step 2, Carry out hot air drying and drying treatment to CA-GA nonwoven fabric; Step 3, prepare the HBP-NH of 0.8g/ L Aqueous solution, soak CA-GA nonwoven fabric in HBP-NH In aqueous solution, make CA-GA nonwoven The surface of the woven fabric is fully wetted in the HBP-NH 2 aqueous solution, and the surface chemical grafting modification is carried out at 50 ° C to realize the chemical link between the amino group and the surface group of CA-GA - aldehyde group, that is, CA-GA -HBP-NH 2 non-woven fabric; step 4, subjecting the CA-GA-HBP-NH 2 non-woven fabric to pressure roller extrusion drying to remove excess unreacted HBP-NH 2 in the solution.
对比例4Comparative example 4
氨基改性海藻酸钙纤维非织造织物，其制备方法包括如下步骤：步骤1、利用浓度为5wt％的GA水溶液，将CA非织造织物浸泡于GA水溶液中，使CA非织造织物表面充分润湿于GA水溶液中并在50℃下持续1小时对其进行表面化学接枝改性处理，实现GA与海藻酸钙纤维表面基团-羟基的化学链接，即得CA-GA非织造织物；步骤2、对CA-GA非织造织物进行压辊挤压干燥处理，除去溶液中多余未反应的GA；步骤3、配制10g/L的HBP-NH2水溶液，将CA-GA非织造织物浸泡于HBP-NH2水溶液中，使CA-GA非织造织物表面充分润湿于HBP-NH2水溶液中并在50℃下对其进行表面化学接枝改性处理，实现氨基与CA-GA表面基团-醛基的化学链接，即得CA-GA-HBP-NH2非织造织物；步骤4、对CA-GA-HBP-NH2非织造织物进行压辊挤压干燥处理，除去溶液中多余未反应的HBP-NH2。Amino-modified calcium alginate fiber nonwoven fabric, its preparation method comprises the following steps: step 1, utilize the GA aqueous solution that concentration is 5wt%, soak CA nonwoven fabric in GA aqueous solution, make the surface of CA nonwoven fabric fully wet Carry out surface chemical graft modification treatment in GA aqueous solution at 50°C for 1 hour to realize the chemical link between GA and calcium alginate fiber surface group-hydroxyl, and obtain CA-GA nonwoven fabric; step 2 1. The CA-GA nonwoven fabric is subjected to pressure roller extrusion drying to remove excess unreacted GA in the solution; step 3, prepare 10g/L of HBP-NH 2 aqueous solution, soak the CA-GA nonwoven fabric in HBP- In NH 2 aqueous solution, make the surface of CA-GA nonwoven fabric fully wet in HBP-NH 2 aqueous solution and carry out surface chemical grafting modification treatment at 50°C to realize the combination of amino group and CA-GA surface group-aldehyde The chemical link of base, obtains CA-GA-HBP-NH 2 nonwoven fabrics; Step 4, carry out pressing roller extrusion drying process to CA-GA-HBP-NH 2 nonwoven fabrics, remove excess unreacted HBP in the solution -NH2 .
对比例5Comparative example 5
氨基改性海藻酸钙纤维非织造织物，其制备方法包括如下步骤：步骤1、利用浓度为5wt％的GA水溶液，将CA非织造织物浸泡于GA水溶液中，使CA非织造织物表面充分润湿于GA水溶液中并在30℃下持续1小时对其进行表面化学接枝改性处理，实现GA与海藻酸钙纤维表面基团-羟基的化学链接，即得CA-GA非织造织物；步骤2、对CA-GA非织造织物进行压辊挤压干燥处理，除去溶液中多余未反应的GA；步骤3、配制0.8g/L的HBP-NH2水溶液，将CA-GA非织造织物浸泡于HBP-NH2水溶液中，使CA-GA非织造织物表面充分润湿于HBP-NH2水溶液中并在30℃下对其进行表面化学接枝改性处理，实现氨基与CA-GA表面基团-醛基的化学链接，即得CA-GA-HBP-NH2非织造织物；步骤4、对CA-GA-HBP-NH2非织造织物进行压辊挤压干燥处理，除去溶液中多余未反应的HBP-NH2。Amino-modified calcium alginate fiber nonwoven fabric, its preparation method comprises the following steps: step 1, utilize the GA aqueous solution that concentration is 5wt%, soak CA nonwoven fabric in GA aqueous solution, make the surface of CA nonwoven fabric fully wet Carry out surface chemical graft modification treatment in GA aqueous solution at 30°C for 1 hour to realize the chemical link between GA and calcium alginate fiber surface group-hydroxyl, and obtain CA-GA nonwoven fabric; step 2 1. The CA-GA non-woven fabric is subjected to pressure roller extrusion drying to remove excess unreacted GA in the solution; step 3, prepare 0.8g/L of HBP-NH 2 aqueous solution, soak the CA-GA non-woven fabric in HBP -in NH 2 aqueous solution, make the surface of CA-GA nonwoven fabric fully wet in HBP-NH 2 aqueous solution and carry out surface chemical grafting modification treatment on it at 30°C, to realize amino group and CA-GA surface group- The chemical link of aldehyde group promptly gets CA-GA-HBP-NH 2 nonwoven fabrics; Step 4, carry out pressing roller extrusion drying process to CA-GA-HBP-NH 2 nonwoven fabrics, remove excess unreacted in the solution HBP- NH2 .
对比例6Comparative example 6
氨基改性海藻酸钙纤维非织造织物，其制备方法包括如下步骤：步骤1、利用浓度为5wt％的GA水溶液，将CA非织造织物浸泡于GA水溶液中，使CA非织造织物表面充分润湿于GA水溶液中并在70℃下持续1小时对其进行表面化学接枝改性处理，实现GA与海藻酸钙纤维表面基团-羟基的化学链接，即得CA-GA非织造织物；步骤2、对CA-GA非织造织物进行压辊挤压干燥处理，除去溶液中多余未反应的GA；步骤3、配制0.8g/L的HBP-NH2水溶液，将CA-GA非织造织物浸泡于HBP-NH2水溶液中，使CA-GA非织造织物表面充分润湿于HBP-NH2水溶液中并在70℃下对其进行表面化学接枝改性处理，实现氨基与CA-GA表面基团-醛基的化学链接，即得CA-GA-HBP-NH2非织造织物；步骤4、对CA-GA-HBP-NH2非织造织物进行压辊挤压干燥处理，除去溶液中多余未反应的HBP-NH2。Amino-modified calcium alginate fiber nonwoven fabric, its preparation method comprises the following steps: step 1, utilize the GA aqueous solution that concentration is 5wt%, soak CA nonwoven fabric in GA aqueous solution, make the surface of CA nonwoven fabric fully wet Carry out surface chemical grafting modification treatment in GA aqueous solution at 70°C for 1 hour to realize the chemical link between GA and calcium alginate fiber surface group-hydroxyl, and obtain CA-GA nonwoven fabric; step 2 1. The CA-GA non-woven fabric is subjected to pressure roller extrusion drying to remove excess unreacted GA in the solution; step 3, prepare 0.8g/L of HBP-NH 2 aqueous solution, soak the CA-GA non-woven fabric in HBP -in NH 2 aqueous solution, make the surface of CA-GA nonwoven fabric fully wet in HBP-NH 2 aqueous solution and carry out surface chemical grafting modification treatment at 70°C to realize amino group and CA-GA surface group- The chemical link of aldehyde group promptly gets CA-GA-HBP-NH 2 nonwoven fabrics; Step 4, carry out pressing roller extrusion drying process to CA-GA-HBP-NH 2 nonwoven fabrics, remove excess unreacted in the solution HBP- NH2 .
对实施例1-6及对比例1-6进行吸附性能检测，检测方法为具体包括：将待测非织造织物置于三角烧瓶中，加入铅离子溶液1000PPm，在30℃下吸附至吸附平衡，通过紫外分光光度计测试，计算每克材料的铅离子吸附量。实施例1-6及对比例1-6的铅离子吸附量结果如表1所示。Examples 1-6 and Comparative Examples 1-6 were tested for adsorption performance. The detection method specifically included: placing the nonwoven fabric to be tested in a Erlenmeyer flask, adding 1000 ppm of lead ion solution, and adsorbing to adsorption equilibrium at 30°C. Through ultraviolet spectrophotometer test, calculate the amount of lead ion adsorption per gram of material. The lead ion adsorption results of Examples 1-6 and Comparative Examples 1-6 are shown in Table 1.
表1织物铅离子吸附量数值Table 1 Fabric lead ion adsorption value
从表1可知，实施例1-6与对比例1相比，采用本发明对海藻酸钙纤维非织造织物表面处理后，有效提高了其对重金属铅离子的吸附能力。It can be seen from Table 1 that, compared with Comparative Example 1, the surface treatment of calcium alginate fiber nonwoven fabrics in Examples 1-6 by the present invention effectively improved its adsorption capacity for heavy metal lead ions.
实施例1与对比例2相比，实施例1并非直接将端氨基超支化聚合物溶液加入含戊二醛的溶液中，这有效避免了端氨基超支化聚合物直接和溶液中的戊二醛反应，降低了无效反应，提高了端氨基超支化聚合物与海藻酸钙纤维之间的有效选择性反应，提高了端氨基超支化聚合物的有效使用率，降低了物损，降低了生产成本，且有效降低了戊二醛双醛基与端氨基超支化聚合物的副反应，避免了副反应产物大量附着于非织造织物纤维表面进而降低其重金属铅离子吸附性能。对比例2中的吸附量比实施例1降低了24％，可能原因在于戊二醛双醛基与端氨基超支化聚合物的副反应物质大量附着在非织造织物表面。Compared with Comparative Example 2 in Example 1, in Example 1, the amino-terminated hyperbranched polymer solution is not directly added to the glutaraldehyde-containing solution, which effectively avoids the direct contact of the amino-terminated hyperbranched polymer with the glutaraldehyde in the solution. Reaction, reducing ineffective reactions, improving the effective selective reaction between amino-terminated hyperbranched polymers and calcium alginate fibers, improving the effective utilization rate of amino-terminated hyperbranched polymers, reducing material loss, and reducing production costs , and effectively reduce the side reaction between the glutaraldehyde dialdehyde group and the amino-terminated hyperbranched polymer, avoiding a large amount of side reaction products attached to the surface of the nonwoven fabric fiber and reducing its heavy metal lead ion adsorption performance. The adsorption amount in Comparative Example 2 is 24% lower than that in Example 1, which may be due to the fact that a large amount of side-reaction substances of glutaraldehyde dialdehyde groups and amino-terminated hyperbranched polymers are attached to the surface of the nonwoven fabric.
实施例1与对比例3相比，对比例3的吸附量低，原因在于在热风干燥过程中造成纤维硬化脆性，在湿润又烘干的过程中使得纤维形貌结构发生了改变，影响了端氨基超支化聚合物的接枝情况，降低铅离子吸附性能。本发明采用挤压辊挤压干燥，有效避免了在热风干燥过程中造成纤维硬化脆性增加影响下一步反应的情况，同时去除了多余的戊二醛溶液，提高了下一步端氨基超支化聚合物在纤维上接枝的选择性。此外，采用挤压辊挤压干燥，有效降低了能耗，降低了生产成本。Compared with Comparative Example 3 in Example 1, the adsorption amount of Comparative Example 3 is low. The reason is that the fibers are hardened and brittle during the hot air drying process, and the morphology and structure of the fibers are changed during the process of wetting and drying, which affects the ends. The grafting of amino hyperbranched polymers reduces the adsorption performance of lead ions. The invention adopts squeeze rollers to squeeze and dry, which effectively avoids the situation that the increase of fiber hardening and brittleness affects the next step reaction during the hot air drying process, and at the same time removes excess glutaraldehyde solution, improving the efficiency of the next step of the amino-terminated hyperbranched polymer. Selectivity of grafting on fibers. In addition, the use of extrusion rollers to squeeze and dry effectively reduces energy consumption and production costs.
实施例1与对比例4相比，对比例4中的吸附量有所下降，可能原因在于过量的端氨基超支化聚合物大量附着在海藻酸钙非织造织物表面，降低有效吸附从而影响吸附性能，同时，表明本发明制备方法无需过高的浓度，可以节约原料，降低生产成本。Compared with Comparative Example 4 in Example 1, the adsorption amount in Comparative Example 4 has decreased. The possible reason is that a large amount of excessive amino-terminated hyperbranched polymers are attached to the surface of the calcium alginate nonwoven fabric, which reduces the effective adsorption and affects the adsorption performance. , and at the same time, it shows that the preparation method of the present invention does not need an excessively high concentration, can save raw materials and reduce production costs.
实施例1与对比例5相比，对比例5的反应温度较低，吸附量也较低；实施例1和对比例6相比，对比例6的反应温度较高，但是吸附量也较低，表明本发明的制备方法无需过高的反应温度，可以降低能耗，降低生产成本。Compared with Comparative Example 5 in Example 1, the reaction temperature of Comparative Example 5 is lower, and the adsorption capacity is also lower; compared with Example 1 and Comparative Example 6, the reaction temperature of Comparative Example 6 is higher, but the adsorption capacity is also lower , indicating that the preparation method of the present invention does not need excessive reaction temperature, can reduce energy consumption and reduce production cost.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211613243.3A CN115874445A (en) | 2022-12-15 | 2022-12-15 | Amino modified calcium alginate fiber non-woven fabric and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211613243.3A CN115874445A (en) | 2022-12-15 | 2022-12-15 | Amino modified calcium alginate fiber non-woven fabric and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115874445A true CN115874445A (en) | 2023-03-31 |
Family
ID=85767592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211613243.3A Pending CN115874445A (en) | 2022-12-15 | 2022-12-15 | Amino modified calcium alginate fiber non-woven fabric and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115874445A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103554510A (en) * | 2013-11-02 | 2014-02-05 | 广西民族大学 | Amino-terminated modified cellulose, and preparation method and application thereof |
| CN109225174A (en) * | 2018-10-23 | 2019-01-18 | 南通大学 | A kind of modified calcium alginate fibre heavy-metal adsorption material and preparation method thereof |
| CN112679628A (en) * | 2020-12-24 | 2021-04-20 | 舟山达康科技有限公司 | Medical dressing based on alginate fibers and preparation method thereof |
-
2022
- 2022-12-15 CN CN202211613243.3A patent/CN115874445A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103554510A (en) * | 2013-11-02 | 2014-02-05 | 广西民族大学 | Amino-terminated modified cellulose, and preparation method and application thereof |
| CN109225174A (en) * | 2018-10-23 | 2019-01-18 | 南通大学 | A kind of modified calcium alginate fibre heavy-metal adsorption material and preparation method thereof |
| CN112679628A (en) * | 2020-12-24 | 2021-04-20 | 舟山达康科技有限公司 | Medical dressing based on alginate fibers and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11731104B2 (en) | Preparation method for biomass-based hyperbranched adsorption material | |
| CN102120179B (en) | Preparation method of modified activated carbon fiber for adsorbing ultra-micro sulfur dioxide | |
| CN105013447A (en) | Preparation method of modified cellulose heavy metal adsorbent | |
| WO2018129859A1 (en) | Preparation method, regeneration method and application for chelating microfiltration membrane | |
| CN111499887A (en) | Antibacterial heavy metal-removing photocatalyst composite hydrogel | |
| CN113304726A (en) | Preparation method of disinfection by-product adsorption type carbon membrane filter element, product obtained by preparation method and application of product | |
| CN103865060A (en) | Preparation method and application of polymer retention filter aid containing phenylboronic acid functional group | |
| CN115055170A (en) | Wood-based modified nano-cellulose water purification material with high adsorption performance and preparation method and application thereof | |
| CN111389215A (en) | Preparation method and application of hyperbranched polyamide modified activated carbon | |
| CN106758520B (en) | The preparation method of glutaraldehyde cross-linking polyethyleneimine paper substrate film | |
| CN102115921B (en) | Glycosylated nanofiber membrane and preparation method and application thereof | |
| CN115874445A (en) | Amino modified calcium alginate fiber non-woven fabric and preparation method thereof | |
| CN104437394B (en) | Dual-layer high-amino density plant fiber-based adsorption material and preparation method and application thereof | |
| CN108273474A (en) | A kind of preparation method of modified activated carbon of the surface rich in phenolic hydroxyl group | |
| CN111686702A (en) | Preparation method of lignosulfonate-based polyphenylamine adsorption material | |
| CN116393104B (en) | Preparation method and application of modified corn stalk composite filter column | |
| CN113318784B (en) | Preparation method and application of nano-osmium composite filter column attached to corn stalk | |
| CN111468080B (en) | Environment-friendly treatment method and treatment agent for industrial wastewater | |
| CN112604674B (en) | A fiber-based adsorption material and its preparation method and the removal of trivalent chromium in water | |
| CN109437377B (en) | Preparation method of sewage treatment flocculant | |
| CN116459807B (en) | Modified keratin-based formaldehyde adsorbent and preparation method thereof | |
| CN113617342A (en) | Preparation method of aminated bagasse/graphene composite aerogel and application of aminated bagasse/graphene composite aerogel in wastewater treatment | |
| CN111545179A (en) | Preparation method of 2-aminopyrazine modified milk fiber biological adsorbent | |
| CN116100916B (en) | A method for preparing a cation exchange membrane for industrial sodium sulfate electrolysis | |
| CN115196780B (en) | Treatment process of pulping and papermaking wastewater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |