CN107737533A - 一种β‑环糊精反渗透膜的制备方法 - Google Patents

一种β‑环糊精反渗透膜的制备方法 Download PDF

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CN107737533A
CN107737533A CN201711007775.1A CN201711007775A CN107737533A CN 107737533 A CN107737533 A CN 107737533A CN 201711007775 A CN201711007775 A CN 201711007775A CN 107737533 A CN107737533 A CN 107737533A
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solution
reverse osmosis
osmosis membrane
dissolved
film
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周勇
赵艳艳
高从堦
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Zhejiang University of Technology ZJUT
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Zhejiang University of Technology ZJUT
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/08—Polysaccharides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/025—Reverse osmosis; Hyperfiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0006—Organic membrane manufacture by chemical reactions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/66—Polymers having sulfur in the main chain, with or without nitrogen, oxygen or carbon only
    • B01D71/68—Polysulfones; Polyethersulfones

Abstract

本发明公开了β‑环糊精反渗透膜的制备方法。将间苯二胺溶于纯水配成质量浓度2%的溶液，并加入1%的樟脑磺酸作为pH调节剂，加入0.5%三乙胺作为酸接受剂，将β‑环糊精溶于此溶液中，混合均匀并超声震荡作为水相备用；将均苯三甲酰氯溶于正己烷中作为油相，浓度为0.1%；将水相溶液倒在聚砜底膜上，静置两分钟倒掉多余溶液，待膜表面无水滴后浸入油相，反应30 S，放置至膜表面干燥，放入烘箱中烘干10mins成膜。本发明得到反渗透膜具有简单易得、高通量、高脱盐率的特点。

Description

一种β-环糊精反渗透膜的制备方法
技术领域
本发明属于膜化学技术领域，特别是涉及一种β-环糊精反渗透膜的制备方法。
背景技术
环糊精(Cyclodextrins，CDs)是由嗜碱性芽胞杆菌(Bacillus属杆菌)经培养得到的环糊精糖基转移酶(CGTase)作用于淀粉生成的一类环状低聚糖，呈结晶状、均质，不具有吸湿性。β-环糊精为环糊精的其中一种，其价廉易得，具有合适的尺寸和特殊的功能被广泛用于膜性能的改善。其分子结构呈中空圆锥台型，具有最显著的特征是其环外亲水、环内疏水。将其引入到膜表面可在提高膜通量的同时提高膜的抗污染性。反渗透膜本身截留率已经较高，在保持其高截留率的前提下，提高其通量是提升膜性能的主要研究方向。
人们开展了大量β-环糊精复合膜改性的研究，如在不改变β-环糊精基本性能的前提下，接入功能性分子，这些方法虽然取得一定的效果，但其工艺繁琐，经济成本较高，并不适合实际生产应用。
发明内容
本发明的目的是提供一种低成本、高通量的β-环糊精反渗透膜的制备方法。
为此，本发明采用的技术方案是这样的：一种β-环糊精反渗透膜的制备方法，包括以下步骤：
将间苯二胺溶于纯水配成质量浓度2％的溶液，并加入1％的樟脑磺酸作为PH调节剂，加入0.5％三乙胺作为酸接受剂，将β-环糊精溶于此溶液中，混合均匀并超声震荡作为水相备用；将均苯三甲酰氯溶于正己烷中作为油相，浓度为0.1％；将水相溶液倒在聚砜底膜上，静置两分钟倒掉多余溶液，待膜表面无水滴后浸入油相，反应30S，放置至膜表面干燥，放入烘箱中烘干10mins成膜。
作为优选的技术方案，β-环糊精的用量为：β-环糊精溶液的质量分数为0.5-2％。
本发明通过在在水相中加入β-环糊精，通过原位界面聚合法将β-环糊精引入膜表面，带有亲水性基团的β-环糊精有助于提高膜水通量和抗污染性能，所制备的β-环糊精改性反渗透膜具有较高的渗透性和耐污染性，制膜方法简单易行，所用改性剂简单易得，具有良好的工业化应用前景。
具体实施方式
实施例1
将间苯二胺溶于纯水配成2％溶液，并加入1％的樟脑磺酸作为PH调节剂，加入0.5％三乙胺作为酸接受剂，将β-环糊精溶此水溶液中，混合均匀并超声震荡作为水相备用；将均苯三甲酰氯溶于正己烷中作为油相，浓度为0.1％；将水相溶液倒在聚砜底膜上，静置两分钟倒掉多余溶液，待膜表面沥干后倒入油相，反应30S，放置至膜表面干燥后放入烘箱60℃烘干10mins成膜。
在1.5Mpa测试，结果如下：
β-环糊精浓度(wt％) 纯水通量(L/m2·h) NaCl截留率(％)
0 33.17 96.66
0.5 36.6 97.23
1 41.9 97.29
1.5 50.54 97.39
2 47.93 97.30
实施例2
将实例1所制得的膜做静态水滴接触角测试结果如下：
β-环糊精质量分数(wt％) 接触角(°)
0 66.5
0.5 58.8
1 56.5
1.5 48.3
2 58.1
实施例3
改变水相在聚砜膜表面的浸泡时间，β-环糊精质量分数为1％，其他步骤与实施例1相同的操作方法，测试结果如下：
浸泡时间t/mins 纯水通量(L/m2·h) NaCl截留率(％)
1 34.37 97.03
2 38.42 97.96
5 35.48 98.21
8 34.57 98.64
10 33.5 98.72
实施例4
改变膜在烘箱中的后处理温度，β-环糊精质量分数为1％，其他步骤与实施例1相同的操作方法,实验测试结果如下：
实施例5
XPS元素分析结果如下
从以上实施例可以看出，本实施例所得到的反渗透膜，具有高脱盐率、高水通量的特点，能够实现发明目的。

Claims (2)

1.一种新型β-环糊精反渗透膜的制备方法，其特征包括以下步骤：将间苯二胺溶于纯水配成质量浓度2％的溶液，并加入1％的樟脑磺酸作为PH调节剂，加入0.5％三乙胺作为酸接受剂，将β-环糊精溶于此溶液中，混合均匀并超声震荡作为水相备用；将均苯三甲酰氯溶于正己烷中作为油相，浓度为0.1％；将水相溶液倒在聚砜底膜上，静置两分钟倒掉多余溶液，待膜表面无水滴后浸入油相，反应30S，放置至膜表面干燥，放入烘箱中烘干10mins成膜。
2.根据权利要求1所述的一种新型β-环糊精反渗透膜的制备方法，其特征在于：β-环糊精溶液的质量分数为0.5-2％。
CN201711007775.1A 2017-10-25 2017-10-25 一种β‑环糊精反渗透膜的制备方法 Pending CN107737533A (zh)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108479427A (zh) * 2018-05-25 2018-09-04 南京佳乐净膜科技有限公司 抗菌除重金属共混改性的聚合物膜及其制备方法
CN108744974A (zh) * 2018-06-26 2018-11-06 郑州大学 一种环糊精接枝纳米材料改性有机溶剂纳滤膜及其制备方法
CN111068526A (zh) * 2019-12-19 2020-04-28 中化(宁波)润沃膜科技有限公司 一种脱盐复合膜及其制备方法

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CN102327746A (zh) * 2011-08-23 2012-01-25 复旦大学 一种抗污染环糊精-聚合物复合纳滤膜及其制备方法
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CN104923086A (zh) * 2015-06-09 2015-09-23 国家海洋局天津海水淡化与综合利用研究所 一种半芳香聚酰胺复合反渗透膜及其制备方法

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108479427A (zh) * 2018-05-25 2018-09-04 南京佳乐净膜科技有限公司 抗菌除重金属共混改性的聚合物膜及其制备方法
CN108744974A (zh) * 2018-06-26 2018-11-06 郑州大学 一种环糊精接枝纳米材料改性有机溶剂纳滤膜及其制备方法
CN111068526A (zh) * 2019-12-19 2020-04-28 中化(宁波)润沃膜科技有限公司 一种脱盐复合膜及其制备方法

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