CN106422803A - 新型聚酰胺复合正渗透膜的制备方法 - Google Patents

新型聚酰胺复合正渗透膜的制备方法 Download PDF

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CN106422803A
CN106422803A CN201611014945.4A CN201611014945A CN106422803A CN 106422803 A CN106422803 A CN 106422803A CN 201611014945 A CN201611014945 A CN 201611014945A CN 106422803 A CN106422803 A CN 106422803A
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monomer solution
osmosis membrane
forward osmosis
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王耀斌
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Shaanxi Shengmai Petroleum Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/002Forward osmosis or direct osmosis
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D67/00Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002Organic membrane manufacture
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D69/00Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/02Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D69/00Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12Composite membranes; Ultra-thin membranes
    • B01D69/125In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D71/00Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06Organic material
    • B01D71/56Polyamides, e.g. polyester-amides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D71/00Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06Organic material
    • B01D71/66Polymers having sulfur in the main chain, with or without nitrogen, oxygen or carbon only
    • B01D71/68Polysulfones; Polyethersulfones

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Manufacturing & Machinery (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

本发明涉及功能材料技术领域,具体涉及一种新型聚酰胺复合正渗透膜的制备方法。新型聚酰胺复合正渗透膜的制备方法,包括如下步骤:(1)聚砜多孔支撑基膜的制备;(2)m‑XDA 单体溶液配制;(3)TMC单体溶液配制;(4)聚酰胺复合正渗透膜制备。通过本发明提供的方法制备的新型聚酰胺复合正渗透膜,具有良好的耐氯性,耐氯性能在2000ppmh。与传统的聚酰胺反渗透膜相比,耐氯性能有所提高。

Description

新型聚酰胺复合正渗透膜的制备方法
技术领域
本发明涉及功能材料技术领域,具体涉及一种新型聚酰胺复合正渗透膜的制备方法。
背景技术
正渗透(FO)过程是一个浓度驱动过程,是指水自发的从高水化学势区(原料液侧)通过选择性半透膜向低水化学势区(汲取液侧)传递,而溶质分子和离子留在原溶液中的过程。正渗透过程以其低能耗、抗污染、操作简便和常温常压下运行等优点,受到了众多学者的关注。目前正渗透技术在食品加工、药物释放控制、污泥脱水、造纸等领域都有着很好的应用,显示出了极大的优越性。
近年来正渗透过程应用和正渗透膜制备得到快速发展,随着技术的进步,对正渗透膜性能的要求也越来越高。其中,复合正渗透膜因其良好的性能,具有高水通量高截留率等特点得到人们的重视。复合正渗透膜近年来有着许多新的研究:(1)高性能聚酰胺复合正渗透膜的制备,以聚砜超滤膜为基膜,通过间苯二胺 (MPD)与均苯三甲酰氯(TMC)界面聚合制备了平板聚酰胺复合正渗透膜;(2)界面聚合正渗透膜结构参数的调控,利用共混亲水高分子材料调节基膜的亲水性,利用双层刮膜技术调节基膜的孔结构;(3) PVA-CS/PHBV 复合膜制备及其性能研究,采用涂覆法将PVA-CS 混合溶液涂覆在PHBV 静电纺纤维膜表面,考察不同PVA/CS 溶液的配比对PVA-CS/PHBV 复合膜性能的影响;(4)界面聚合中空纤维正渗透膜的制备和表征,以聚砜为原料,通过浸没沉淀法制备中空纤维基膜,然后采用界面聚合法制备出中空纤维正渗透膜;(5)正渗透复合膜的制备及表征,通过在聚砜铸膜液中加入混合添加剂氯化锂和聚乙烯吡咯烷酮(PVP),用相转移法制备出多孔支撑层,然后通过界面聚合制备聚酰胺正渗透复合膜,重点研究了添加剂和聚砜浓度对膜结构和性能的影响。
发明内容
本发明旨在提出一种新型聚酰胺复合正渗透膜的制备方法。
本发明的技术方案在于:
新型聚酰胺复合正渗透膜的制备方法,包括如下步骤:
(1)聚砜多孔支撑基膜的制备
将聚砜在50℃下烘干24h以上,溶解在二甲基乙酰胺中,再加入聚乙烯吡咯烷酮(PVP)作为添加剂,40~50℃温度下加热溶解,静置脱泡后,冷却备用;以聚酯筛网作为支撑材料,在一定的湿度和温度条件下进行刮膜,在空气中挥发后放入水浴中凝胶,得到聚砜多孔支撑基膜;
(2)m-XDA 单体溶液配制
取去离子水,加入三乙胺,用盐酸调节pH值到9.5左右,再取m-XDA 单体溶液加入三乙胺溶液中,取少量十二烷基硫酸钠加入到溶液中,充分搅拌混合,静置备用;
(3)TMC单体溶液配制
称取m-XDA 单体溶液溶于正己烷中,配制成均苯三甲酰氯溶液,置于棕色试剂瓶中保存备用;
(4)聚酰胺复合正渗透膜制备
取聚砜多孔支撑基膜,将其单面浸入适量m-XDA 单体溶液中,除去表面剩余溶液,沥干;再将其浸入TMC单体溶液中,进行界面聚合反应,反应结束,沥干TMC单体溶液,置于烘箱中进行热处理;最后,用去离子水清洗,保存备用,制成聚酰胺复合正渗透膜。
本发明的技术效果在于:
通过本发明提供的方法制备的新型聚酰胺复合正渗透膜,具有良好的耐氯性,耐氯性能在2000ppmh。与传统的聚酰胺反渗透膜相比,耐氯性能有所提高。
具体实施方式
新型聚酰胺复合正渗透膜的制备方法,包括如下步骤:
(1)聚砜多孔支撑基膜的制备
将聚砜在50℃下烘干24h以上,溶解在二甲基乙酰胺中,再加入聚乙烯吡咯烷酮(PVP)作为添加剂,40~50℃温度下加热溶解,静置脱泡后,冷却备用;以聚酯筛网作为支撑材料,在一定的湿度和温度条件下进行刮膜,在空气中挥发后放入水浴中凝胶,得到聚砜多孔支撑基膜;
(2)m-XDA 单体溶液配制
取去离子水,加入三乙胺,用盐酸调节pH值到9.5左右,再取m-XDA 单体溶液加入三乙胺溶液中,取少量十二烷基硫酸钠加入到溶液中,充分搅拌混合,静置备用;
(3)TMC单体溶液配制
称取m-XDA 单体溶液溶于正己烷中,配制成均苯三甲酰氯溶液,置于棕色试剂瓶中保存备用;
(4)聚酰胺复合正渗透膜制备
取聚砜多孔支撑基膜,将其单面浸入适量m-XDA 单体溶液中,除去表面剩余溶液,沥干;再将其浸入TMC单体溶液中,进行界面聚合反应,反应结束,沥干TMC单体溶液,置于烘箱中进行热处理;最后,用去离子水清洗,保存备用,制成聚酰胺复合正渗透膜。

Claims (1)

1.新型聚酰胺复合正渗透膜的制备方法,其特征在于:包括如下步骤:
(1)聚砜多孔支撑基膜的制备
将聚砜在50℃下烘干24h以上,溶解在二甲基乙酰胺中,再加入聚乙烯吡咯烷酮(PVP)作为添加剂,40~50℃温度下加热溶解,静置脱泡后,冷却备用;以聚酯筛网作为支撑材料,在一定的湿度和温度条件下进行刮膜,在空气中挥发后放入水浴中凝胶,得到聚砜多孔支撑基膜;
(2)m-XDA 单体溶液配制
取去离子水,加入三乙胺,用盐酸调节pH值到9.5,再取m-XDA 单体溶液加入三乙胺溶液中,取少量十二烷基硫酸钠加入到溶液中,充分搅拌混合,静置备用;
(3)TMC单体溶液配制
称取m-XDA 单体溶液溶于正己烷中,配制成均苯三甲酰氯溶液,置于棕色试剂瓶中保存备用;
(4)聚酰胺复合正渗透膜制备
取聚砜多孔支撑基膜,将其单面浸入适量m-XDA 单体溶液中,除去表面剩余溶液,沥干;再将其浸入TMC单体溶液中,进行界面聚合反应,反应结束,沥干TMC单体溶液,置于烘箱中进行热处理;最后,用去离子水清洗,保存备用,制成聚酰胺复合正渗透膜。
CN201611014945.4A 2016-11-18 2016-11-18 新型聚酰胺复合正渗透膜的制备方法 Pending CN106422803A (zh)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107789994A (zh) * 2017-11-16 2018-03-13 清华大学 正渗透分离膜及其制备方法
CN108905622A (zh) * 2017-12-15 2018-11-30 浙江工业大学 一种新型正渗透膜及其制备方法
CN110465198A (zh) * 2019-08-21 2019-11-19 安徽智泓净化科技股份有限公司 一种膜组件的超声波正渗透在线清洗方法及装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107789994A (zh) * 2017-11-16 2018-03-13 清华大学 正渗透分离膜及其制备方法
CN108905622A (zh) * 2017-12-15 2018-11-30 浙江工业大学 一种新型正渗透膜及其制备方法
CN110465198A (zh) * 2019-08-21 2019-11-19 安徽智泓净化科技股份有限公司 一种膜组件的超声波正渗透在线清洗方法及装置

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