CN114698641A - 与聚乙烯亚胺接枝的胍类聚合物的用途 - Google Patents
与聚乙烯亚胺接枝的胍类聚合物的用途 Download PDFInfo
- Publication number
- CN114698641A CN114698641A CN202210306458.4A CN202210306458A CN114698641A CN 114698641 A CN114698641 A CN 114698641A CN 202210306458 A CN202210306458 A CN 202210306458A CN 114698641 A CN114698641 A CN 114698641A
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- China
- Prior art keywords
- ghpei
- guanidine
- guanidine polymer
- polymer
- polyethyleneimine
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- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 title claims abstract description 162
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 title claims abstract description 79
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 229920000642 polymer Polymers 0.000 title claims abstract description 71
- 229920002873 Polyethylenimine Polymers 0.000 title claims abstract description 41
- 229960004198 guanidine Drugs 0.000 claims abstract description 78
- 239000012528 membrane Substances 0.000 claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 29
- 239000000645 desinfectant Substances 0.000 claims abstract description 28
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 27
- 150000001875 compounds Chemical class 0.000 claims abstract description 25
- -1 polyhexamethylene guanidine hydrochloride Polymers 0.000 claims abstract description 23
- 230000000694 effects Effects 0.000 claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 19
- 230000004048 modification Effects 0.000 claims abstract description 15
- 238000012986 modification Methods 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 62
- 239000000047 product Substances 0.000 claims description 42
- 239000000243 solution Substances 0.000 claims description 34
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 claims description 32
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 28
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 27
- 230000000844 anti-bacterial effect Effects 0.000 claims description 27
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 25
- 238000006243 chemical reaction Methods 0.000 claims description 24
- VYFYYTLLBUKUHU-UHFFFAOYSA-N dopamine Chemical compound NCCC1=CC=C(O)C(O)=C1 VYFYYTLLBUKUHU-UHFFFAOYSA-N 0.000 claims description 23
- 235000019441 ethanol Nutrition 0.000 claims description 21
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 14
- 238000001728 nano-filtration Methods 0.000 claims description 14
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 claims description 13
- 229920002492 poly(sulfone) Polymers 0.000 claims description 13
- 229960004889 salicylic acid Drugs 0.000 claims description 13
- 239000002904 solvent Substances 0.000 claims description 13
- 229960003638 dopamine Drugs 0.000 claims description 11
- 229920001661 Chitosan Polymers 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 150000002357 guanidines Chemical class 0.000 claims description 9
- 239000007853 buffer solution Substances 0.000 claims description 8
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- 150000003585 thioureas Chemical class 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
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- 238000005303 weighing Methods 0.000 claims description 6
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 238000002390 rotary evaporation Methods 0.000 claims description 5
- 239000006228 supernatant Substances 0.000 claims description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 4
- 229910002651 NO3 Inorganic materials 0.000 claims description 4
- 239000013067 intermediate product Substances 0.000 claims description 4
- 239000012263 liquid product Substances 0.000 claims description 4
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 4
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 3
- 229960005070 ascorbic acid Drugs 0.000 claims description 3
- 235000010323 ascorbic acid Nutrition 0.000 claims description 3
- 239000011668 ascorbic acid Substances 0.000 claims description 3
- 239000012298 atmosphere Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 claims description 3
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- 238000006482 condensation reaction Methods 0.000 claims description 2
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 2
- 230000002070 germicidal effect Effects 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims description 2
- 229910017604 nitric acid Inorganic materials 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 239000011541 reaction mixture Substances 0.000 claims description 2
- QKNYBSVHEMOAJP-UHFFFAOYSA-N 2-amino-2-(hydroxymethyl)propane-1,3-diol;hydron;chloride Chemical compound Cl.OCC(N)(CO)CO QKNYBSVHEMOAJP-UHFFFAOYSA-N 0.000 claims 2
- 230000003385 bacteriostatic effect Effects 0.000 abstract description 6
- 230000000813 microbial effect Effects 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 3
- 210000000170 cell membrane Anatomy 0.000 abstract description 2
- 238000009826 distribution Methods 0.000 abstract description 2
- 241000894006 Bacteria Species 0.000 description 27
- 238000001514 detection method Methods 0.000 description 15
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
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- 238000000576 coating method Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 239000002504 physiological saline solution Substances 0.000 description 5
- 241000588724 Escherichia coli Species 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 238000010790 dilution Methods 0.000 description 4
- 239000012895 dilution Substances 0.000 description 4
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 4
- CWGFSQJQIHRAAE-UHFFFAOYSA-N 2-amino-2-(hydroxymethyl)propane-1,3-diol tetrahydrochloride Chemical compound Cl.Cl.Cl.Cl.OCC(N)(CO)CO CWGFSQJQIHRAAE-UHFFFAOYSA-N 0.000 description 3
- 125000003277 amino group Chemical group 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000000845 anti-microbial effect Effects 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 238000012258 culturing Methods 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 229960000789 guanidine hydrochloride Drugs 0.000 description 2
- PJJJBBJSCAKJQF-UHFFFAOYSA-N guanidinium chloride Chemical compound [Cl-].NC(N)=[NH2+] PJJJBBJSCAKJQF-UHFFFAOYSA-N 0.000 description 2
- 125000002795 guanidino group Chemical group C(N)(=N)N* 0.000 description 2
- 125000001165 hydrophobic group Chemical group 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229920000768 polyamine Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 150000003384 small molecules Chemical class 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- ATHGHQPFGPMSJY-UHFFFAOYSA-N spermidine Chemical compound NCCCCNCCCN ATHGHQPFGPMSJY-UHFFFAOYSA-N 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- OJUDFURAIYFYBP-UHFFFAOYSA-N (dihydrazinylmethylideneamino)azanium;chloride Chemical compound Cl.NNC(NN)=NN OJUDFURAIYFYBP-UHFFFAOYSA-N 0.000 description 1
- PWGJDPKCLMLPJW-UHFFFAOYSA-N 1,8-diaminooctane Chemical compound NCCCCCCCCN PWGJDPKCLMLPJW-UHFFFAOYSA-N 0.000 description 1
- FKPUYTAEIPNGRM-UHFFFAOYSA-N 1-(diaminomethylidene)guanidine;hydron;chloride Chemical compound [Cl-].N\C([NH3+])=N/C(N)=N FKPUYTAEIPNGRM-UHFFFAOYSA-N 0.000 description 1
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 description 1
- UBDZFAGVPPMTIT-UHFFFAOYSA-N 2-aminoguanidine;hydron;chloride Chemical compound [Cl-].NC(N)=N[NH3+] UBDZFAGVPPMTIT-UHFFFAOYSA-N 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000012733 comparative method Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
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- 239000012153 distilled water Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
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- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
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- 229920000578 graft copolymer Polymers 0.000 description 1
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- NDEMNVPZDAFUKN-UHFFFAOYSA-N guanidine;nitric acid Chemical compound NC(N)=N.O[N+]([O-])=O.O[N+]([O-])=O NDEMNVPZDAFUKN-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
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- ZETYUTMSJWMKNQ-UHFFFAOYSA-N n,n',n'-trimethylhexane-1,6-diamine Chemical compound CNCCCCCCN(C)C ZETYUTMSJWMKNQ-UHFFFAOYSA-N 0.000 description 1
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- 150000003904 phospholipids Chemical class 0.000 description 1
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- 150000003141 primary amines Chemical class 0.000 description 1
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- 229940063673 spermidine Drugs 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 description 1
- 229960001124 trientine Drugs 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
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- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
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- A01N47/40—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having a double or triple bond to nitrogen, e.g. cyanates, cyanamides
- A01N47/42—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having a double or triple bond to nitrogen, e.g. cyanates, cyanamides containing —N=CX2 groups, e.g. isothiourea
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- A01N37/36—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids
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- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
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Abstract
本发明涉及与聚乙烯亚胺接枝的胍类聚合物的用途,其包括:将聚六亚甲基胍盐酸盐与分枝状聚乙烯亚胺或乙二胺封端的聚乙烯亚胺以形成胍类聚合物,利用该胍类聚合物为接枝剂,对其他杀菌消毒化合物、消毒剂或水处理滤膜进行接枝修饰,以增强或赋予其他消毒化合物、消毒剂或滤膜的抑菌消毒作用和延长杀菌消毒作用时长。本发明拓宽了胍类消毒剂的使用范围,从胍基在目标化合物/产品上的有效结合性、在微生物细胞膜表面的吸附性、胍基的分布密度、胍基克服空间位阻而裸露在分子外部等几个方面,大大增加了胍类消毒剂的杀菌消毒效能和作用时间。
Description
技术领域
本发明涉及消毒剂产品技术领域,尤其涉及与聚乙烯亚胺接枝的胍类聚合物的用途。
背景技术
近年来,胍类聚合物(PHGH)被作为消毒剂在生活中广泛使用,其具有高效杀菌效果。但是,在实际应用中,由于其官能团相对较少,故体现出的附着性和吸附性并不高,在用于产品接枝时,随着产品使用时间边长,产品的消毒效果即会大幅下降,因此限制了胍类消毒剂在不同生产领域及产品中的应用。
发明内容
(一)要解决的技术问题
鉴于现有技术的上述缺点、不足,本发明提供与聚乙烯亚胺接枝的胍类聚合物的用途,其主要是将胍盐与分枝状聚乙烯亚胺接枝以形成胍类聚合物GHPEI,然后利用该胍类聚合物GHPEI为接枝剂进行接枝改性马来酸酐、季铵盐、壳聚糖、硫脲、水杨酸、聚酯纤维、聚砜滤膜等,由此得到杀菌消毒性能显著增强的各类消毒剂产品或滤膜产品。
(二)技术方案
为了达到上述目的,本发明采用的主要技术方案包括:
一方面,本发明提供与聚乙烯亚胺接枝的胍类聚合物的用途,其包括:将聚六亚甲基胍盐酸盐与分枝状聚乙烯亚胺或乙二胺封端的聚乙烯亚胺以形成胍类聚合物GHPEI,利用该胍类聚合物GHPEI为接枝剂,对其他杀菌消毒化合物、消毒剂或水处理滤膜进行接枝修饰,以增强或赋予其他消毒化合物、消毒剂或滤膜的抑菌消毒作用和延长杀菌消毒作用时长。
根据本发明的较佳实施例,胍类聚合物GHPEI的制备方法为:
(1)按照摩尔比,将分枝状聚乙烯亚胺或乙二胺封端的聚乙烯亚胺:聚六亚甲基胍盐酸盐=1:23-27(优选为1:25)放入反应釜中混合均匀,在氮气保护下,升温至110-140℃搅拌回流,进行预聚反应并持续1-1.5h;(2)逐渐升温至150-170℃,反应时间为4-5h;(3)再次升温至175-185℃,反应3.5-5h;(4)将产物转移到密封袋中,得到胍类聚合物GHPEI。
优选地,所述反应釜中还加入一定量的小分子多胺化合物,具体可选择为1,6-己二胺、三甲基己二胺、亚精胺、二乙烯三胺、三乙烯四胺、四乙烯五胺或1,8-辛二胺中的任一种。其中,小分子多胺化合物与胍盐质量比为1:4-2:1。
反应过程为:胍盐分子中碳氮双键吸电子效应较强,在高温熔融状态下,盐酸胍分子中的碳氮单键容易断裂,与己二胺或聚乙烯亚胺PEI中的NH2/NH-发生取代反应,脱去氨分子NH3,逐步形成树枝状的缩聚物,由于分枝状或乙二胺封端的聚乙烯亚胺具有很多端部的NH2-,缩聚后胍基位于端部,由于发挥胍基的抑菌作用。
根据本发明的较佳实施例,所述其他杀菌消毒化合物或消毒剂包括但不限于马来酸酐、季铵盐、壳聚糖、硫脲及其衍生物、水杨酸;所述水处理滤膜包括但不限于聚酯纤维滤膜及聚砜纳滤膜等。
根据本发明的较佳实施例,以所述胍类聚合物GHPEI为接枝剂对马来酸酐(MA)接枝改性的方法,包括如下步骤:
(1)称取胍类聚合物GHPEI加到反应器中,加入水和乙醇1:2体积比的混合溶液将GHPEI完全溶解,按照摩尔比GHPEI:MA=1:1.1-1.2加入马来酸酐,恒温40-50℃反应8-20h;
(2)反应结束后加入丙酮、搅拌、静置、移出上清液以除去大量的溶剂和未反应的马来酸酐;
(3)加入适量的甲醇溶解后,再加入丙酮搅拌、静置、移出上清液,重复2-4次,将所得产物常温下真空干燥,得到胍类聚合物GHPEI接枝改性的马来酸酐。
根据本发明的较佳实施例,以所述胍类聚合物GHPEI为接枝剂对硫脲接枝改性的方法,包括如下步骤:
(1)称取胍类聚合物GHPEI加到反应器中,加入水和乙醇1:2体积比的混合溶液将GHPEI完全溶解,向反应器中加入硫脲,使硫脲在反应混合物中质量占比6-9%;
(2)在油浴锅中恒温100℃回流冷凝反应1.5-2h;
(3)反应结束后,将所得淡黄色液体产物在45-50℃旋蒸15-30min,以除去大部分溶剂,最后于室温下真空干燥,得到黄色粘稠液体,即为胍类聚合物GHPEI接枝改性的硫脲。
根据本发明的较佳实施例,以所述胍类聚合物GHPEI为接枝剂对壳聚糖接枝改性的方法,包括如下步骤:
(1)将胍类聚合物GHPEI溶于乙醇:丙酮:水=2:1:1的溶液,加入与GHPEI相同摩尔量的甲基丙烯酸缩水甘油酯(GMA),在温度为40-45℃下的氮气气氛中进行反应5-8h,旋转蒸发得到中间产物;
(2)将一定量的壳聚糖溶于1%的醋酸溶液中,加入到反应器中并向反应器中输入氮气保护气氛,充分搅拌后,将步骤(1)得到的中间产物与硝酸铈铵(CAN)加入到反应器中,再用0.2mol/L的HNO3调节悬反应体系pH值=5-6,氮气氛围下将反应器置于50-55℃水浴中反应150-200min;硝酸铈铵的用量为每0.7g加入0.015gCAN(作为氧化剂);
(3)用丙酮沉降,过滤得到粗接枝产物;用乙醇抽提后,真空干燥,研磨得到纯化的胍类聚合物GHPEI接枝改性的壳聚糖。
根据本发明的较佳实施例,以所述胍类聚合物GHPEI为接枝剂对水杨酸接枝改性的方法,包括如下步骤:
(1)称取胍类聚合物GHPEI用适量水溶解,置于反应器中,加入抗坏血酸和过氧化氢,充分搅拌;
(2)将水杨酸用无水乙醇溶解,逐步滴加到反应器中,使反应器在≤25℃进行恒温反应20-28h;
(3)反应结束后,加入氢氧化钠溶液调节pH到9.5-10.5,静置沉淀,将沉淀烘干,得到接枝胍类聚合物GHPEI接枝改性的水杨酸。
根据本发明的较佳实施例,以所述胍类聚合物GHPEI为接枝剂对聚砜纳滤膜的改性方法,包括如下步骤:
(1)以三(羟甲基)氨基甲烷-盐酸(Tris-HCl)缓冲溶液(pH=8-9)为溶剂,配制1.5-2.2/L多巴胺溶液;以三(羟甲基)氨基甲烷-盐酸(Tris-HCl)缓冲溶液(pH=8-9)为溶剂,配制GHPEI溶液;
(2)将聚砜超滤膜浸渍于所述多巴胺溶液中,室温反应20-26h后,将膜取出,用去离子水和乙醇充分清洗,得到表面附着有多巴胺的改性膜;
(3)将改性膜置于GHPEI溶液中,室温反应20-26h后,将膜用去离子水和乙醇充分振荡清洗以除去物理吸附的GHPEI,制得抗菌聚砜纳滤复合膜。
另一方面,本发明还涉及一种将胍基接枝到目标化合物或目标产品上的方法,其包括:先将胍盐与分枝状聚乙烯亚胺或乙二胺封端的聚乙烯亚胺以形成胍类聚合物,利用该胍类聚合物为接枝剂,对目标化合物或产品进行接枝修饰,以增强目标化合物或产品的杀菌消毒功效和延长杀菌消毒作用时长。
优选地,所述胍盐为盐酸胍盐、硝酸胍盐、氨基胍盐酸盐、三氨基胍盐酸盐、缩二胍盐酸盐或聚六亚甲基胍盐酸盐。
根据本发明的较佳实施例,所述目标化合物包括但不限于马来酸酐、季铵盐、壳聚糖、硫脲及其衍生物、水杨酸;所述目标产品为水处理滤膜。优选地,所述水处理滤膜包括聚酯纤维滤膜及聚砜纳滤膜等。
(三)有益效果
本发明将胍盐与分枝状聚乙烯亚胺/乙二胺封端的聚乙烯亚胺接枝反应得到胍类聚合物,以该胍类聚合物该接枝剂再对其他抑菌化合物、消毒剂产品、滤膜等进行接枝改性,以将胍基连接到其他抑菌化合物、消毒剂产品或滤膜上,从而增加其他抑菌化合物、消毒剂产品、滤膜的抗菌消毒性能,并延长抑菌消毒的作用时长。
本发明的原理在于:聚乙烯亚胺是一种水溶性高分子聚合物,官能团较多,能与胍盐更完全地反应,与不同的化合物基团之间具有很好的附着性和结合性;相较于直接将胍类聚合物(PHGH)接枝到目标产品上存在的“附着性差和吸附性低”的问题,本发明的方案能很好地解决该问题。
分枝状聚乙烯亚胺或乙二胺封端的聚乙烯亚胺具有反应性很强的伯胺和仲胺,能够很容易地与环氧、醛反应,其胺基能与羟基反应生成氢键,与羧基反应生成离子键,也能与碳酰基反应生成共价键;聚乙烯亚胺同时具备极性基团(氨基)和疏水基团(乙烯基),故其能够与不同的物质表面的基团相结合,给接枝改性其他抑菌化合物、消毒剂或产品提供了前提条件。同时,由于聚乙烯亚胺的这种特性,也为接枝改性后的产物在微生物细胞表面的停留提供了便利条件。聚乙烯亚胺的多官能团和同时具备极性基团(氨基)和疏水基,有利于多个胍基协同作用,提高聚合物在溶液中的正电性,更好地实现聚合物对微生物细胞表面磷脂中磷酸根的抓取,从而增强杀菌能力。
由此可见,将胍盐与聚乙烯亚胺接枝后,可以提高胍基消毒剂的反应性、增强对改性目标化合物或产品的附着性和在有害微生物/细菌表面的吸附性。
进一步地,相比线型结构的PHGH聚胍类消毒剂(聚六亚甲基胍盐酸盐),本发明胍类聚合物GHPEI上所含的胍基密度明显得到提高,胍基协同作用增强;线型结构的PHGH分子内部或分子间容易发生缠绕、折叠,由于空间位阻的影响,胍基被隐藏而难以发挥其杀菌效果,而本发明胍类聚合物GHPEI延续了分枝状聚乙烯亚胺或乙二胺封端的聚乙烯亚胺的树形结构,使得GHPEI上大量的胍基均匀分布在链端,裸露在外部发挥其抑菌作用,故而进一步发挥GHPEI接枝改性产品得到抑菌性能。
利用本发明方法,拓宽了胍类消毒剂的使用范围,从胍基在目标化合物/产品上的有效结合性、在微生物细胞膜表面的吸附性、胍基的分布密度、胍基克服空间位阻而裸露在分子外部等几个方面,大大增加了胍类消毒剂的杀菌消毒效能和作用时间。
附图说明
图1为聚六亚甲基胍盐酸盐和不同浓度的胍类聚合物GHPEI的抗菌性能对比。
图2为测试对比10ppm、30ppm、100ppm三个浓度的聚六亚甲基胍盐酸盐与马来酸酐按照1:1.2摩尔比接枝改性(a)和GHPEI接枝改性马来酸酐(b)的抗菌性能;左侧为空白对照。
图3为测试对比10ppm、30ppm、100ppm三个浓度的聚六亚甲基胍盐酸盐与硫脲接枝改性(a)和GHPEI接枝改性硫脲(b)的抗菌性能;左侧为空白对照。
图4为测试对比10ppm、30ppm、100ppm三个浓度的聚六亚甲基胍盐酸盐与水杨酸接枝改性(b)和GHPEI接枝改性水杨酸(a)的抗菌性能;左侧为空白对照。
图5为测试对比聚六亚甲基胍盐酸盐改性PSF/PDA膜(a)和经GHPEI溶液改性抗菌聚砜纳滤复合膜(b)的抗菌效果;左侧为空白对照。
具体实施方式
为了更好的解释本发明,以便于理解,下面结合附图,通过具体实施方式,对本发明作详细描述。
实施例1
在一个安装有搅拌桨、尾气处理装置、三通、温度计、油浴锅的100mL四口瓶中,按照摩尔比乙二胺封端的聚乙烯亚胺:聚六亚甲基胍盐酸盐=1:25加入,在氮气保护下加热搅拌升温到120℃,开始进行预聚反应并持续1h,继续缓慢升温到160℃,进行保温反应5h,继而再次升温至180℃,保温4h,取出产品,封入密封袋,得到与聚乙烯亚胺接枝的胍类聚合物GHPEI。
测试同等浓度的聚六亚甲基胍盐酸盐和10ppm、30ppm、100ppm的胍类聚合物GHPEI的抗菌性能。对比方法为:以大肠杆菌为实验对象,采用稀释涂布平板法比较抑菌性能。
稀释涂布平板法过程如下:
(1)实验准备:
提前半小时把无菌台整理干净,打开紫外半小时。将菌悬液(大肠杆菌)在摇床上摇半小时。配置质量分数为0.9%的生理盐水,将生理盐水用移液管移取9mL于试管中(所需生理盐水量根据实验而定),用塞子塞好。配置对应菌的固体培养基(用封口膜包)以及实验所需平板、装了生理盐水的试管(均要用报纸包裹)于高压灭菌锅内灭菌(121℃、20min)。将消毒剂与水以0.1g:100mL稀释成1000ppm的溶液。在无菌台上将固体培养基趁热到入平板中(小板约倒25mL、大板约倒30mL)并晾凉待用。
(2)实验过程:
①菌的稀释
a.菌浓度为10^-1:用移液枪取1mL(1000μL)菌悬液于9mL的生理盐水中,用旋涡混合器摇匀。
b.菌浓度为10^-2:用移液枪从a中取1mL于9mL的生理盐水中,用旋涡混合器摇匀。
c.菌浓度为10^-3用移液枪从b中取1mL于9mL的生理盐水中,用旋涡混合器摇匀。
d.菌浓度为10^-4用移液枪从c中取1mL于9mL的生理盐水中,用旋涡混合器摇匀。
e.菌浓度为10^-5用移液枪从d中取1mL于9mL的生理盐水中,用旋涡混合器摇匀。
根据菌种不同,将菌稀释到合适浓度。
②消毒剂选取
根据实验所需消毒剂浓度取(1)中配置的消毒剂合适的体积于稀释好的含菌试管内,摇匀。
③涂板
提前将涂布棒用酒精灯烧一下,凉了以后,用酒精棉擦拭,重复两次。(每涂一次板,均重复此操作。)
取配置好的试管中的溶液100μL于平板内,用涂布棒均匀涂抹。
④培养
将涂好的平板倒扣放于恒温培养箱内,根据所用菌种,调至在37℃恒温培养18h观察长菌结果。
由如图1所示,聚乙烯亚胺接枝的胍类聚合物GHPEI在10ppm表现出很好的抑菌性能,但10ppm的聚六亚甲基胍盐酸盐抑菌效果相对较差。聚乙烯亚胺接枝的聚合物GHPEI在多次检测结果中均呈现出了良好的抑菌性能,在10ppm的浓度检测下基本达到无菌效果;而聚六亚甲基胍盐酸盐在10ppm的浓度检测下仍含有少量菌,大都在5-10个菌左右。
实施例2
本实施例将按实施例1的方法制备的胍类聚合物GHPEI接枝改性马来酸酐,得到新型消毒产物,方法如下:
称取4.8g的GHPEI加入到100mL的烧杯中,向三口烧瓶中加入15mL水与乙醇的混合溶液(水:乙醇=1:2),将消毒剂溶解,再向三口烧瓶中加入MA(摩尔比,GHPEI:MA=1:1.2)将烧瓶一口插上温度计,温度计没入溶液中,并置于油浴锅中,以温度计显示温度45℃反应20h。反应结束后,将所得淡黄色较稀液体产物在40℃下进行旋蒸20min,以除去大部分溶剂。再将产物丙酮沉降,过滤上清液,重复3次,得乳白色较黏稠液体,室温下真空干燥12h,得淡黄褐色黏稠液体,即GHPEI接枝改性马来酸酐。
作为对照,将聚六亚甲基胍盐酸盐与马来酸酐按照1:1.2摩尔比制备聚六亚甲基胍盐酸盐接枝改性马来酸酐,测试在10ppm、30ppm、100ppm三个相同浓度的GHPEI接枝改性马来酸酐的抗菌性能,对比方法参见实施例1。仍以大肠杆菌为实验对象,采用稀释涂布平板法,37℃恒温培养18h观察长菌结果。实验结果如图2所示:使用聚乙烯亚胺接枝的聚合物GHPEI接枝改性马来酸酐的产品,在多次检测结果中均呈现出了较好的抑菌性能,在10ppm的浓度检测下基本达到无菌效果;而聚六亚甲基胍盐酸盐接枝改性马来酸酐产品在10ppm的浓度检测下仍含有较少量菌,大都在2-10个菌左右。
实施例3
本实施例将按实施例1的方法制备的胍类聚合物GHPEI接枝改性硫脲,得到新型消毒产物,方法如下:
称取3g的按实施例1的方法制备的GHPEI加入到100mL三口烧瓶中,向三口烧瓶中加入15mL水与乙醇的混合溶液(水:乙醇=1:2),将消毒剂溶解。再向三口烧瓶中加入硫脲(硫脲用量为8%)。将烧瓶一口插上温度计,温度计没入溶液中,并加上球形冷凝回流装置,置于油浴锅中,以温度计显示温度100℃时开始反应1.5h。反应结束后,将所得淡黄色较稀液体产物在45℃下进行旋蒸20min,以除去大部分溶剂,待反应结束后,将产物室温下真空干燥12h,得黄褐色黏稠液体,即为GHPEI接枝改性硫脲。
作为对照,将聚六亚甲基胍盐酸盐与硫脲(按照相等摩尔比)制备聚六亚甲基胍盐酸盐接枝改性硫脲,测试在10ppm、30ppm、100ppm三个相同浓度的GHPEI接枝改性硫脲的抗菌性能,实验方法参见实施例1。实验结果如图3所示:使用GHPEI接枝改性硫脲的产品在多次检测结果中均呈现出了较好的抑菌性能,在10ppm的浓度检测下含有较少量菌,菌数在5-10左右;而聚六亚甲基胍盐酸盐接枝改性硫脲产品在10ppm的浓度检测下仍含有较多菌数,大多菌数在30个以上。
实施例4
本实施例将按实施例1的方法制备的胍类聚合物GHPEI接枝水杨酸,得到新型消毒产物,方法如下:
称4g按实施例1的方法制备的GHPEI加入到100mL烧瓶中,加入25mL蒸馏水(适量)使其溶解。加入0.4g抗坏血酸和1.2mL过氧化氢,搅拌30min。用20mL无水乙醇溶解4g水杨酸,滴加入反应烧瓶中。将烧瓶置于油浴锅中,在25℃条件下反应24h,反应结束后,加入6mol/LNaOH溶液调至pH为10,静置使其沉淀。将沉淀烘干,得到产物,即GHPEI接枝水杨酸。
作为对照,将聚六亚甲基胍盐酸盐与水杨酸按照4g:4g制备聚六亚甲基胍盐酸盐接枝改性水杨酸,测试在10ppm、30ppm、100ppm三个相同浓度的GHPEI接枝改性水杨酸的抗菌性能,实验方法参见实施例1。实验结果如图4所示:采用GHPEI接枝改性水杨酸的产品在多次检测结果中均呈现出了较好的抑菌性能,在10ppm的浓度检测下达到了少菌效果,基本达到了无菌效果,而聚六亚甲基胍盐酸盐接枝改性水杨酸产品在10ppm的浓度检测下仍含有较多菌,大都在10-15个菌左右。
实施例5
本实施例将按实施例1的方法制备的胍类聚合物GHPEI接枝聚砜纳滤膜,其方法如下:
称量6.057g的Tris,取400mL纯水进行溶解,用0.5mol/L的HCL调节pH到8.5,定容到500mL,得到三(羟甲基)氨基甲烷-盐酸(Tris-HCl)缓冲溶液。以Tris-HCl缓冲溶液(pH=8.5)为溶剂,取0.2g多巴胺,配制2g/L多巴胺溶液。将PSF聚砜超滤膜浸泡前述多巴胺缓冲溶液中,在20℃的水浴锅中反应24h后,将膜取出,用去离子水和乙醇充分振荡清洗,得到表面多巴胺改性的PSF/PDA膜。
对照组:以Tris-HCl缓冲溶液(pH=8.5)为溶剂,分别配制质量浓度2%、5%、8%、10%的聚六亚甲基胍盐酸盐溶液,将多巴胺改性膜置于聚六亚甲基胍盐酸盐溶液中,在20℃的水浴锅中反应24h后,用去离子水和乙醇充分振荡清洗以除去物理吸附在膜上的聚六亚甲基胍盐酸盐,制得聚六亚甲基胍盐酸盐接枝改性的PSF/PDA复合纳滤膜。
实验组:以Tris-HCl缓冲溶液(pH=8.5)为溶剂,分别配制质量浓度2%、5%、8%、10%的GHPEI溶液,将多巴胺改性的膜置于GHPEI溶液中,在20℃的水浴锅中反应24h后,用去离子水和乙醇充分振荡清洗以除去物理吸附在膜上的GHPEI,制得PSF/PDA-GHPEI复合纳滤膜。
测试两种改性复合纳滤膜的抗菌性能,测试方法:采用大肠杆菌为测试对象,测试方法为“吸收法”(按照国标法GB/T20944.2-2007);在37℃恒温培养18h观察长菌结果。
实验结果如图5所示:改性后的PSF/PDA-GHPEI复合纳滤膜在多次检测结果中均呈现出了较好的抑菌性能,在10ppm的浓度检测下基本达到无菌效果;而聚六亚甲基胍盐酸盐接枝改性的PSF/PDA复合纳滤膜在10ppm的浓度检测下仍含有较少量菌,大都在5-10个菌左右。
除上述举出的实施例外,还可以将胍类聚合物GHPEI接枝到聚酯纤维上,使其具有抗菌性,该聚酯纤维可以用于制作滤膜等或织物。
最后应说明的是:以上各实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述各实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分或者全部技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。
Claims (9)
1.与聚乙烯亚胺接枝的胍类聚合物的用途,其包括:将聚六亚甲基胍盐酸盐与分枝状聚乙烯亚胺或乙二胺封端的聚乙烯亚胺以形成胍类聚合物,利用该胍类聚合物为接枝剂,对其他杀菌消毒化合物、消毒剂或水处理滤膜进行接枝修饰,以增强或赋予其他消毒化合物、消毒剂或滤膜的抑菌消毒作用和延长杀菌消毒作用时长。
2.根据权利要求1所述的用途,其特征在于,所述胍类聚合物的制备方法为:
(1)按照摩尔比,将分枝状聚乙烯亚胺或乙二胺封端的聚乙烯亚胺:聚六亚甲基胍盐酸盐按1:23-27放入反应釜中混合均匀,在氮气保护下,升温至110-140℃搅拌回流,进行预聚反应并持续1-1.5h;
(2)逐渐升温至150-170℃,反应时间为4-5h;
(3)再次升温至175-185℃,反应3.5-5h;
(4)将产物转移到密封袋中,得到胍类聚合物GHPEI。
3.根据权利要求2所述的用途,其特征在于,所述其他杀菌消毒化合物或消毒剂包括但不限于马来酸酐、季铵盐、壳聚糖、硫脲及其衍生物、水杨酸;所述水处理滤膜包括但不限于聚酯纤维滤膜及聚砜纳滤膜等。
4.根据权利要求3所述的用途,其特征在于,以所述胍类聚合物GHPEI为接枝剂对马来酸酐MA接枝改性的方法,包括如下步骤:
(1)称取胍类聚合物GHPEI加到反应器中,加入水和乙醇1:2体积比的混合溶液将GHPEI完全溶解,按照摩尔比GHPEI:MA=1:1.1-1.2加入马来酸酐,恒温40-50℃反应8-20h;
(2)反应结束后加入丙酮、搅拌、静置、移出上清液以除去大量的溶剂和未反应的马来酸酐;
(3)加入适量的甲醇溶解后,再加入丙酮搅拌、静置、移出上清液,重复2-4次,将所得产物常温下真空干燥,得到胍类聚合物GHPEI接枝改性的马来酸酐。
5.根据权利要求3所述的用途,其特征在于,以所述胍类聚合物GHPEI为接枝剂对硫脲接枝改性的方法,包括如下步骤:
(1)称取胍类聚合物GHPEI加到反应器中,加入水和乙醇1:2体积比的混合溶液将GHPEI完全溶解,向反应器中加入硫脲,使硫脲在反应混合物中质量占比6-9%;
(2)在油浴锅中恒温100℃回流冷凝反应1.5-2h;
(3)反应结束后,将所得淡黄色液体产物在45-50℃旋蒸15-30min,以除去大部分溶剂,最后于室温下真空干燥,得到黄色粘稠液体,即为胍类聚合物GHPEI接枝改性的硫脲。
6.根据权利要求3所述的用途,其特征在于,以所述胍类聚合物GHPEI为接枝剂对壳聚糖接枝改性的方法,包括如下步骤:
(1)将胍类聚合物GHPEI溶于乙醇:丙酮:水=2:1:1的溶液,加入与GHPEI相同摩尔量的甲基丙烯酸缩水甘油酯GMA,在温度为40-45℃下的氮气气氛中进行反应5-8h,旋转蒸发得到中间产物;
(2)将一定量的壳聚糖溶于1%的醋酸溶液中,加入到反应器中并向反应器中输入氮气保护气氛,充分搅拌后,将步骤(1)得到的中间产物与硝酸铈铵加入到反应器中,再用0.2mol/L的HNO3调节悬反应体系pH值=5-6,氮气氛围下将反应器置于50-55℃水浴中反应150-200min;硝酸铈铵的用量为每0.7g加入0.015g CAN;
(3)用丙酮沉降,过滤得到粗接枝产物;用乙醇抽提后,真空干燥,研磨得到纯化的胍类聚合物GHPEI接枝改性的壳聚糖。
7.根据权利要求3所述的用途,其特征在于,以所述胍类聚合物GHPEI为接枝剂对水杨酸接枝改性的方法,包括如下步骤:
(1)称取胍类聚合物GHPEI用适量水溶解,置于反应器中,加入抗坏血酸和过氧化氢,充分搅拌;
(2)将水杨酸用无水乙醇溶解,逐步滴加到反应器中,使反应器在≤25℃进行恒温反应20-28h;
(3)反应结束后,加入氢氧化钠溶液调节pH到9.5-10.5,静置沉淀,将沉淀烘干,得到接枝胍类聚合物GHPEI接枝改性的水杨酸。
8.根据权利要求3所述的用途,其特征在于,以所述胍类聚合物GHPEI为接枝剂对聚砜纳滤膜的改性方法,包括如下步骤:
(1)以三(羟甲基)氨基甲烷-盐酸缓冲溶液为溶剂,配制1.5-2.2/L多巴胺溶液;以三(羟甲基)氨基甲烷-盐酸缓冲溶液为溶剂,配制GHPEI溶液;
(2)将聚砜超滤膜浸渍于所述多巴胺溶液中,室温反应20-26h后,将膜取出,用去离子水和乙醇充分清洗,得到表面附着有多巴胺的改性膜;
(3)将改性膜置于GHPEI溶液中,室温反应20-26h后,将膜用去离子水和乙醇充分振荡清洗以除去物理吸附的GHPEI,制得抗菌聚砜纳滤复合膜。
9.一种将胍基接枝到目标化合物或目标产品上的方法,其特征在于,先将胍盐与分枝状聚乙烯亚胺或乙二胺封端的聚乙烯亚胺以形成胍类聚合物,利用该胍类聚合物为接枝剂,对目标化合物或产品进行接枝修饰,以增强目标化合物或产品的杀菌消毒功效和延长杀菌消毒作用时长。
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