CN110756066B - 一种磺化柠檬酸壳聚糖改性聚砜血液透析膜及其制备方法 - Google Patents
一种磺化柠檬酸壳聚糖改性聚砜血液透析膜及其制备方法 Download PDFInfo
- Publication number
- CN110756066B CN110756066B CN201911165257.1A CN201911165257A CN110756066B CN 110756066 B CN110756066 B CN 110756066B CN 201911165257 A CN201911165257 A CN 201911165257A CN 110756066 B CN110756066 B CN 110756066B
- Authority
- CN
- China
- Prior art keywords
- membrane
- sulfonated
- citric acid
- modified polysulfone
- acid chitosan
- 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.)
- Expired - Fee Related
Links
- 229920002492 poly(sulfone) Polymers 0.000 title claims abstract description 99
- 239000012528 membrane Substances 0.000 title claims abstract description 97
- 229920001661 Chitosan Polymers 0.000 title claims abstract description 49
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical class OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 238000001631 haemodialysis Methods 0.000 title claims abstract description 30
- 230000000322 hemodialysis Effects 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 14
- 108010088751 Albumins Proteins 0.000 claims abstract description 10
- 102000009027 Albumins Human genes 0.000 claims abstract description 10
- 241000588724 Escherichia coli Species 0.000 claims abstract description 10
- 241000191967 Staphylococcus aureus Species 0.000 claims abstract description 10
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000001775 anti-pathogenic effect Effects 0.000 claims abstract description 10
- 239000004202 carbamide Substances 0.000 claims abstract description 10
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000012510 hollow fiber Substances 0.000 claims abstract description 7
- 239000002904 solvent Substances 0.000 claims abstract description 7
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
- 239000002994 raw material Substances 0.000 claims description 14
- 238000004804 winding Methods 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 11
- 230000015271 coagulation Effects 0.000 claims description 10
- 238000005345 coagulation Methods 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 7
- 238000009987 spinning Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims description 6
- 230000001112 coagulating effect Effects 0.000 claims description 6
- 238000004090 dissolution Methods 0.000 claims description 6
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 4
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims 2
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 claims 1
- 230000000844 anti-bacterial effect Effects 0.000 abstract 1
- 230000002429 anti-coagulating effect Effects 0.000 abstract 1
- 238000001891 gel spinning Methods 0.000 abstract 1
- 230000035699 permeability Effects 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 description 8
- 229920001499 Heparinoid Polymers 0.000 description 7
- 230000010100 anticoagulation Effects 0.000 description 7
- 239000002554 heparinoid Substances 0.000 description 7
- 230000004048 modification Effects 0.000 description 7
- 238000012986 modification Methods 0.000 description 7
- 210000004369 blood Anatomy 0.000 description 6
- 239000008280 blood Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000000576 coating method Methods 0.000 description 4
- 238000000502 dialysis Methods 0.000 description 4
- 229940025770 heparinoids Drugs 0.000 description 4
- 238000002715 modification method Methods 0.000 description 3
- 108091003079 Bovine Serum Albumin Proteins 0.000 description 2
- HTTJABKRGRZYRN-UHFFFAOYSA-N Heparin Chemical compound OC1C(NC(=O)C)C(O)OC(COS(O)(=O)=O)C1OC1C(OS(O)(=O)=O)C(O)C(OC2C(C(OS(O)(=O)=O)C(OC3C(C(O)C(O)C(O3)C(O)=O)OS(O)(=O)=O)C(CO)O2)NS(O)(=O)=O)C(C(O)=O)O1 HTTJABKRGRZYRN-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- 208000007536 Thrombosis Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 229940098773 bovine serum albumin Drugs 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229940054190 hydroxypropyl chitosan Drugs 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 125000001174 sulfone group Chemical group 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- PSBDWGZCVUAZQS-UHFFFAOYSA-N (dimethylsulfonio)acetate Chemical compound C[S+](C)CC([O-])=O PSBDWGZCVUAZQS-UHFFFAOYSA-N 0.000 description 1
- 206010067484 Adverse reaction Diseases 0.000 description 1
- 102000015081 Blood Coagulation Factors Human genes 0.000 description 1
- 108010039209 Blood Coagulation Factors Proteins 0.000 description 1
- 102000009123 Fibrin Human genes 0.000 description 1
- 108010073385 Fibrin Proteins 0.000 description 1
- BWGVNKXGVNDBDI-UHFFFAOYSA-N Fibrin monomer Chemical compound CNC(=O)CNC(=O)CN BWGVNKXGVNDBDI-UHFFFAOYSA-N 0.000 description 1
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 description 1
- 206010018910 Haemolysis Diseases 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000006838 adverse reaction Effects 0.000 description 1
- 238000005576 amination reaction Methods 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003114 blood coagulation factor Substances 0.000 description 1
- 229940019700 blood coagulation factors Drugs 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000003759 clinical diagnosis Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 230000021615 conjugation Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Chemical group CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 125000001033 ether group Chemical group 0.000 description 1
- 229950003499 fibrin Drugs 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 230000008588 hemolysis Effects 0.000 description 1
- 229920000669 heparin Polymers 0.000 description 1
- 229960002897 heparin Drugs 0.000 description 1
- 239000002628 heparin derivative Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 229940117986 sulfobetaine Drugs 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- B01D61/24—Dialysis ; Membrane extraction
- B01D61/243—Dialysis
-
- 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
- B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
- B01D67/0011—Casting solutions therefor
-
- 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
- B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
- B01D67/0016—Coagulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/08—Hollow fibre membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/02—Details relating to pores or porosity of the membranes
- B01D2325/022—Asymmetric membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/24—Mechanical properties, e.g. strength
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/36—Hydrophilic membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/48—Antimicrobial properties
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Urology & Nephrology (AREA)
- Water Supply & Treatment (AREA)
- External Artificial Organs (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
一种磺化柠檬酸壳聚糖改性聚砜血液透析膜及其制备方法,以磺化柠檬酸壳聚糖改性聚砜(SCACS‑PSF)为膜材,膜液中质量百分含量为15%~25%,溶剂为75%~85%,通过干‑湿纺丝法制备生物相容性良好的磺化柠檬酸壳聚糖改性聚砜血液透析膜。本发明制备的非对称血液透析膜具有中空纤维结构,内外表面为致密的皮层,中间支撑层呈现多孔状,内径为130~260μm,壁厚20~60μm,超滤系数为5~55mL/m2.h.mmHg,是一种具有高渗透性和高分离性的膜组件,其具有良好的抗凝血性和抗菌性,尿素、β‑微球蛋白、白蛋白清除率分别为58%~85%,50%~62%,3.0%~9.8%,抗致病大肠杆菌清除率为99%,金黄色葡萄杆菌清除率为99.5~100%。
Description
技术领域
本发明属于生物医用材料领域,特别涉及一种磺化柠檬酸壳聚糖改性聚砜血液透析膜及其制备方法。
背景技术
聚砜主链由多个砜基、苯基与醚键重复构成,砜基的共轭效应、醚链及苯环的共同作用,使其具有优异的抗氧化性、热稳定性、柔韧可加工性及优良的机械性能,因而,聚砜是一种极具潜力的热塑性高分子弹性体材料。同时,聚砜成膜后耐清洗可重复使用,且具有较好的传输性能,相比于纤维素类中空纤维膜,聚砜中空纤维膜对中分子溶质的清除率较高,因此,其被广泛应用于生物医药领域。但在临床诊疗中,聚砜膜长期植入体内接触血液时,在生物环境中因亲水性较差易形成小的血栓,抗凝血过程易引发感染、炎症等不良反应等原因,这些缺陷在一定程度上限制了聚砜膜在生物医药领域的应用。本发明旨在解决聚砜亲水性差和抗凝血过程中引起并发症的问题,提供了一种磺化柠檬酸壳聚糖改性聚砜血液透析膜及其制备方法。
目前,为提高聚砜膜血液相容性的技术主要是基于聚砜较强的机械、力学性能而进行的共混改性、表面涂覆改性和表面化学接枝改性。郑红等(膜科学与技术,2015,35(6):1-7.)将天然高分子α-纤维素加入聚砜铸膜液中,采用浸没沉淀法制备出新型共混超滤膜,改性后的聚砜膜亲水性和牛血清蛋白通量明显提升,抗污性能也得到了提高。但因结合力不稳固,膜性能可能随使用时间延长而下降。表面涂覆法是通过物理吸附力、交联等作用在原始膜表面沉积活性物质,以实现功能化的改性方法,但其涂覆层厚度会影响膜的性能,在应用过程中也极易出现涂层脱落而致性能恶化。表面化学接枝因改性后膜稳定性良好,且反应活性位点可控而成为目前研究最为广泛的一种聚砜膜改性方法。Changsheng Zhao等(Journal of Membrane Science,2013(446):79.)在聚砜膜表面接枝了磺基甜菜碱丙烯酸甲酯后,得到了接枝率较高的改性材料,其亲水性显著提高,蛋白吸附、血小板吸附等血液相容性指标也明显得到了提升。但此改性方法仅改善了聚砜的疏水性,对于外源性凝血途径并未得到抑制。肝素及类肝素物质作为现代血液相容性材料改性的常用物质,在医用领域应用发展迅速。肝素因其价格昂贵,易溶于水而在改性过程中稳定性差,且易引发多种并发症等缺点,逐渐被类肝素物质所替代。Tianming Liu等(Materials Science&Engineering C Materials for Biological Applications,2017,528:570.)先将聚砜膜氯甲基化与氨基化,再利用戊二醛作为连桥将磺化羟丙基壳聚糖固定在聚砜膜表面,在聚砜结构中引入了类肝素物质磺化羟丙基壳聚糖,明显改善了聚砜的亲水性,显著提升了聚砜的抗凝血性和抗蛋白吸附性。
上述对聚砜血液透析膜材料进行改性的共混法与涂覆法均是通过物理方法来实现聚砜性能的提升,其化学稳定性较差,在血液透析过程中易出血液污染现象;上述的化学表面改性大多是通过在聚砜表面直接引入亲水基团或接枝含有羟基的类肝素物质来实现聚砜抗凝血的提升。对聚砜采用稳定的化学表面改性,在聚砜结构中引入含多羧基柠檬酸结构和磺酸基的类肝素物质,可利用这些亲水基团间的协同作用,从而进一步提升亲水性与抗凝血性。
因此,本发明用磺化柠檬酸壳聚糖改性聚砜为膜材,制备出机械性能与生物相容性均良好的血液透析膜。磺化柠檬酸壳聚糖改性聚砜的骨架为主链聚砜骨架,侧链共价接枝含多羧基的壳聚糖结构和磺酸基的类肝素物质,通过多羧基柠檬酸结构与磺酸基的协同作用,进一步改善其亲水性与血液相容性。
发明内容
本发明的目的是设计一种磺化柠檬酸壳聚糖改性聚砜血液透析膜,以生物相容性良好的磺化柠檬酸壳聚糖改性聚砜作为膜材料,改性后聚砜主链是聚砜长链,侧链通过共价键合的方式接枝磺化柠檬酸改性壳聚糖,其化学结构式为:
结构中n=30~200;SCACS表示磺化柠檬酸改性壳聚糖,其化学结构式为:
结构中m=300~500。
本发明所述的磺化柠檬酸壳聚糖改性聚砜血液透析膜的制备方法,其制备流程包括以下步骤:
(1)改性聚砜膜液的配制
将磺化柠檬酸壳聚糖改性聚砜15%~25%(质量分数,下同),溶剂75%~85%,加入原料罐中,在20~40℃下搅拌10~25h,待充分溶解后,在常温下静置脱泡10~25h,即得到均匀的改性聚砜膜液;所述的溶剂为N,N-二甲基甲酰胺、N,N-二甲基乙酰胺、N-甲基吡咯烷酮、二甲基亚砜中的任一种或两种的混合物;
(2)磺化柠檬酸壳聚糖改性聚砜血液透析膜的制备
打开氮气阀门,维持原料罐压力0.05~0.20MPa,改性聚砜膜液经过滤,通过计量泵压入纺丝头,控制膜液流量为0.5~2.0mL/min,同时通入芯液,其流量为1.0~2.0mL/min;初生态膜经过10~25cm的空气间距后,在卷丝机的牵引下进入凝固浴和漂洗浴,然后缠绕于转筒上;其中,卷丝速度为20~50m/min,凝固浴温度为5~30℃,漂洗浴温度为10~30℃;得到磺化柠檬酸壳聚糖改性聚砜血液透析膜,其内径为130~260μm,壁厚20~60μm,超滤系数为5~55mL/m2.h.mmHg,尿素、β-微球蛋白、白蛋白的清除率分别为58%~85%,50%~62%,3.0%~9.8%,抗致病大肠杆菌清除率为99%,金黄色葡萄杆菌清除率为99.5%。
本发明制备的磺化柠檬酸壳聚糖改性聚砜血液透析膜是具有中空纤维结构的非对称透析膜,其内径为130~260μm,壁厚20~60μm,超滤系数为5~55mL/m2.h.mmHg。与未改性聚砜血液透析膜相比,改性聚砜膜孔隙率较大,拉升强度与拉伸率均有所下降,但机械性能依然良好,拉伸强度由5.45MPa下降到4.90MPa,拉伸率由9.8%下降到6.6%。改性聚砜中空纤维膜具有较为优异的亲水性,抗蛋白吸附性和抗凝血性得到明显改善,牛血清蛋白吸附量由393μg/cm2下降到54μg/cm2,尿素的清除率为58%~85%,β-微球蛋白的清除率为50%~62%,白蛋白的清除率为3.0%~9.8%,溶血率从2.7%降到1.1%,血小板吸附量与形变量均显著降低,血栓现象未见发生;纤维蛋白吸附量低于0.01μg/cm2,抗致病大肠杆菌清除率为99%,金黄色葡萄杆菌清除率为99.5%。以上结果均表明磺化柠檬酸壳聚糖改性聚砜血液透析膜具有良好的机械性能和生物相容性。
本发明具有以下优点:
(1)以磺化柠檬酸壳聚糖改性聚砜为膜材,其结构中含有多个亲水的羧基和可与凝血因子相互作用的磺酸基,改善了聚砜的水合能力,提升了聚砜的亲水性、抗凝血性和抗蛋白吸附性。
(2)膜材料是磺化柠檬酸壳聚糖改性聚砜膜,改性聚砜以聚砜骨架长链为主链,侧链以稳定的共价键与类肝素物质磺化柠檬酸改性壳聚糖相连接,因而具有良好的化学稳定性。
(3)制备工艺简便,工艺操作条件温和可控;所制备的血液透析膜稳定性好。
具体实施方式
实施例1
将磺化柠檬酸壳聚糖改性聚砜18%(质量分数,下同),N,N-二甲基甲酰胺42%,N,N-二甲基乙酰胺40%,加入原料罐中,在25℃下搅拌15h,待充分溶解后,在常温下静置脱泡18h,即得到均匀的膜液;
打开氮气阀门,维持原料罐压力0.20MPa,改性聚砜膜液经过滤,通过计量泵压入纺丝头,控制膜液流量为1.15mL/min,同时通入芯液,其流量为1.09mL/min;初生态膜经过10cm的空气间距后,在卷丝机的牵引下进入凝固浴和漂洗浴,然后缠绕于转筒上;其中,卷丝速度为45m/min,凝固浴温度为28℃,漂洗浴温度为30℃;得到磺化柠檬酸壳聚糖改性聚砜血液透析膜,其内径为172μm,壁厚36μm,超滤系数为41.8mL/m2.h.mmHg,尿素、β-微球蛋白、白蛋白的清除率分别为71.8%,53.2%,7.3%,抗致病大肠杆菌清除率为99%,金黄色葡萄杆菌清除率为99.9%。
实施例2
将磺化柠檬酸壳聚糖改性聚砜20%(质量分数,下同),N,N-二甲基乙酰胺80%,加入原料罐中,在25℃下搅拌12h,待充分溶解后,在常温下静置脱泡18h,即得到均匀的膜液;
打开氮气阀门,维持原料罐压力0.10MPa,改性聚砜膜液经过滤,通过计量泵压入纺丝头,控制膜液流量为1.03mL/min,同时通入芯液,其流量为1.01mL/min;初生态膜经过15cm的空气间距后,在卷丝机的牵引下进入凝固浴和漂洗浴,然后缠绕于转筒上;其中,卷丝速度为36m/min,凝固浴温度为20℃,漂洗浴温度为15℃;得到磺化柠檬酸壳聚糖改性聚砜血液透析膜,其内径为185μm,壁厚38μm,超滤系数为36.5mL/m2.h.mmHg,尿素、β-微球蛋白、白蛋白的清除率分别为70.3%,52.0%,6.4%,抗致病大肠杆菌清除率为99%,金黄色葡萄杆菌清除率为99.5%。
实施例3
将磺化柠檬酸壳聚糖改性聚砜15%(质量分数,下同),N-甲基吡咯烷酮42%,N,N-二甲基乙酰胺43%,加入原料罐中,在25℃下搅拌15h,待充分溶解后,在常温下静置脱泡18h,即得到均匀的膜液;
打开氮气阀门,维持原料罐压力0.18MPa,改性聚砜膜液经过滤,通过计量泵压入纺丝头,控制膜液流量为1.11mL/min,同时通入芯液,其流量为1.08mL/min;初生态膜经过18cm的空气间距后,在卷丝机的牵引下进入凝固浴和漂洗浴,然后缠绕于转筒上;其中,卷丝速度为50m/min,凝固浴温度为30℃,漂洗浴温度为30℃;得到磺化柠檬酸壳聚糖改性聚砜血液透析膜,其内径为163μm,壁厚33μm,超滤系数为54.2mL/m2.h.mmHg,尿素、β-微球蛋白、白蛋白的清除率分别为76.9%,55.3.%,8.1%,抗致病大肠杆菌清除率为99%,金黄色葡萄杆菌清除率为100%。
实施例4
将磺化柠檬酸壳聚糖改性聚砜16%(质量分数,下同),N,N-二甲基甲酰胺20%,N,N-二甲基乙酰胺64%,加入原料罐中,在25℃下搅拌20h,待充分溶解后,在常温下静置脱泡18h,即得到均匀的膜液;
打开氮气阀门,维持原料罐压力0.15MPa,改性聚砜膜液经过滤,通过计量泵压入纺丝头,控制膜液流量为1.23mL/min,同时通入芯液,其流量为1.18mL/min;初生态膜经过25cm的空气间距后,在卷丝机的牵引下进入凝固浴和漂洗浴,然后缠绕于转筒上;其中,卷丝速度为40m/min,凝固浴温度为20℃,漂洗浴温度为20℃;得到磺化柠檬酸壳聚糖改性聚砜血液透析膜,其内径为173μm,壁厚37μm,超滤系数为53.3mL/m2.h.mmHg,尿素、β-微球蛋白、白蛋白的清除率分别为76.2%,54.8%,7.9%,抗致病大肠杆菌清除率为99%,金黄色葡萄杆菌清除率为99.9%。
实施例5
将磺化柠檬酸壳聚糖改性聚砜22%(质量分数,下同),N,N-二甲基甲酰胺20%,N-甲基吡咯烷酮58%,加入原料罐中,在25℃下搅拌15h,待充分溶解后,在常温下静置脱泡18h,即得到均匀的膜液;
打开氮气阀门,维持原料罐压力0.10MPa,改性聚砜膜液经过滤,通过计量泵压入纺丝头,控制膜液流量为0.91mL/min,同时通入芯液,其流量为1.18mL/min;初生态膜经过19cm的空气间距后,在卷丝机的牵引下进入凝固浴和漂洗浴,然后缠绕于转筒上;其中,卷丝速度为26m/min,凝固浴温度为20℃,漂洗浴温度为25℃;得到磺化柠檬酸壳聚糖改性聚砜血液透析膜,其内径为235μm,壁厚40μm,超滤系数为21.4mL/m2.h.mmHg,尿素、β-微球蛋白、白蛋白的清除率分别为65.8%,50.2%,5.4%,抗致病大肠杆菌清除率为99%,金黄色葡萄杆菌清除率为99.5%。
Claims (5)
2.如权利要求1所述的磺化柠檬酸壳聚糖改性聚砜血液透析膜,其特征为:具有中空纤维结构,内外表面为致密的皮层,中间支撑层呈现多孔状,其内径为130~260μm,膜壁厚20~60μm,超滤系数为5~55 mL/m2·h· mmHg,尿素、ß-微球蛋白、白蛋白清除率分别为58%~85%,50%~62%,3.0%~9.5%,抗致病大肠杆菌清除率为99%,金黄色葡萄杆菌清除率为99.5~100%。
3.如权利要求1所述的一种磺化柠檬酸壳聚糖改性聚砜血液透析膜的制备方法,其特征在于包括以下步骤:
(1)改性聚砜膜液的配制
将质量分数为15%~25%的磺化柠檬酸壳聚糖改性聚砜,75%~85%的溶剂,加入原料罐中,在20~40℃下搅拌10~25 h,待充分溶解后,在常温下静置脱泡10~24 h,得到均匀的改性聚砜膜液;所述的溶剂为N,N-二甲基甲酰胺、N,N-二甲基乙酰胺、N-甲基吡咯烷酮、二甲基亚砜中的任一种或两种的混合物;
(2)磺化柠檬酸壳聚糖改性聚砜血液透析膜的制备
打开氮气阀门,维持原料罐压力0.05~0.20 MPa,改性聚砜膜液经过滤,通过计量泵压入纺丝头,控制膜液流量为0.5~2.0 mL/min,同时通入芯液,其流量为1.0~2.0 mL/min;初生态膜经过10~25 cm的空气间距后,在卷丝机的牵引下进入凝固浴和漂洗浴,然后缠绕于转筒上;其中,卷丝速度为20~50 m/min,凝固浴温度为5~30℃,漂洗浴温度为10~30℃;得到磺化柠檬酸壳聚糖改性聚砜血液透析膜,其内径为130~260 μm,壁厚20~60 μm,超滤系数为5~55 mL/m2·h·mmHg,尿素、ß-微球蛋白、白蛋白的清除率分别为58%~85%,50%~62%,3.0%~9.8%,抗致病大肠杆菌清除率为99%,金黄色葡萄杆菌清除率为99.5%~100%。
4.根据权利要求3所述的一种磺化柠檬酸壳聚糖改性聚砜血液透析膜的制备方法,其特征在于:步骤(2)所述的凝固浴为水或步骤(1)所述溶剂的水溶液。
5.根据权利要求3所述的一种磺化柠檬酸壳聚糖改性聚砜血液透析膜的制备方法,其特征在于:步骤(2)所述的芯液为水或步骤(1)所述的溶剂的水溶液。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201911165257.1A CN110756066B (zh) | 2019-11-25 | 2019-11-25 | 一种磺化柠檬酸壳聚糖改性聚砜血液透析膜及其制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201911165257.1A CN110756066B (zh) | 2019-11-25 | 2019-11-25 | 一种磺化柠檬酸壳聚糖改性聚砜血液透析膜及其制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN110756066A CN110756066A (zh) | 2020-02-07 |
CN110756066B true CN110756066B (zh) | 2021-09-21 |
Family
ID=69339347
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201911165257.1A Expired - Fee Related CN110756066B (zh) | 2019-11-25 | 2019-11-25 | 一种磺化柠檬酸壳聚糖改性聚砜血液透析膜及其制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN110756066B (zh) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113171693B (zh) * | 2021-04-30 | 2022-12-06 | 中煤(北京)环保工程有限公司 | 一种基于聚砜复合微滤膜的化工污水处理方法 |
CN113368700B (zh) * | 2021-06-08 | 2022-04-12 | 中南大学湘雅医院 | 一种血液净化改性膜及其制备方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101804307A (zh) * | 2010-04-29 | 2010-08-18 | 江苏朗生生命科技有限公司 | 抗凝血复合超滤膜及其制备方法 |
CN104841285A (zh) * | 2015-05-12 | 2015-08-19 | 中南大学 | 一种柠檬酸和壳聚糖改性的抗凝血聚氨酯血液透析膜及其制备方法 |
CN106943901A (zh) * | 2017-05-12 | 2017-07-14 | 中南大学 | 磺化羟丙基壳聚糖改性的生物相容性聚砜膜及其制备方法 |
CN108579473A (zh) * | 2018-04-28 | 2018-09-28 | 广州康盛生物科技有限公司 | 一种改性中空纤维膜及其制备方法 |
CN109316982A (zh) * | 2018-11-07 | 2019-02-12 | 中南大学 | 一种类肝素改性聚氨酯/聚醚砜共混中空纤维膜及其制备方法 |
CN109603591A (zh) * | 2019-01-18 | 2019-04-12 | 苏州君康医疗科技有限公司 | 抗凝血复合中空纤维膜及制备方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2542291A1 (en) * | 2004-02-03 | 2005-08-18 | Kurume University | Method for separating/refining cationic protein |
CN1704152A (zh) * | 2004-06-04 | 2005-12-07 | 杨虎 | 亲水聚偏氟乙烯微孔膜的制备 |
US20130175218A1 (en) * | 2011-12-16 | 2013-07-11 | The Research Foundation Of State University Of New York | Polymeric nanofibrous composite membranes for energy efficient ethanol dehydration |
CN110280152A (zh) * | 2019-06-25 | 2019-09-27 | 江苏立生血液净化科技有限公司 | 抗凝血血液透析膜及其制备方法 |
-
2019
- 2019-11-25 CN CN201911165257.1A patent/CN110756066B/zh not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101804307A (zh) * | 2010-04-29 | 2010-08-18 | 江苏朗生生命科技有限公司 | 抗凝血复合超滤膜及其制备方法 |
CN104841285A (zh) * | 2015-05-12 | 2015-08-19 | 中南大学 | 一种柠檬酸和壳聚糖改性的抗凝血聚氨酯血液透析膜及其制备方法 |
CN106943901A (zh) * | 2017-05-12 | 2017-07-14 | 中南大学 | 磺化羟丙基壳聚糖改性的生物相容性聚砜膜及其制备方法 |
CN108579473A (zh) * | 2018-04-28 | 2018-09-28 | 广州康盛生物科技有限公司 | 一种改性中空纤维膜及其制备方法 |
CN109316982A (zh) * | 2018-11-07 | 2019-02-12 | 中南大学 | 一种类肝素改性聚氨酯/聚醚砜共混中空纤维膜及其制备方法 |
CN109603591A (zh) * | 2019-01-18 | 2019-04-12 | 苏州君康医疗科技有限公司 | 抗凝血复合中空纤维膜及制备方法 |
Non-Patent Citations (4)
Title |
---|
壳聚糖的改性及其抗凝血活性研究;张虹;《中国优秀硕士学位论文全文数据库医药卫生科技辑》;20150515(第5期);全文 * |
壳聚糖的改性研究进展及其应用;袁玥,钱本祥,凌新龙;《纺织科学与工程学报》;20190731;第36卷(第3期);81-88 * |
改性壳聚糖类肝素化合物血液相容性研究;屠美;《中国医学物理学杂质》;20031031;第20卷(第4期);297-298 * |
柠檬酸改性壳聚糖膜材料的构建及其性能研究;刘杨,沈欣,任彦等;《常州大学学报(自然科学版)》;20170531;第29卷(第3期);76-82 * |
Also Published As
Publication number | Publication date |
---|---|
CN110756066A (zh) | 2020-02-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5694298B2 (ja) | 改良された性能を有する膜の調製方法 | |
US9776143B2 (en) | Low cut-off ultrafiltration membranes | |
JP5619878B2 (ja) | 改良された性能を有する膜 | |
JP5129962B2 (ja) | 一体型非対称膜、その製造方法およびその使用 | |
CN110756066B (zh) | 一种磺化柠檬酸壳聚糖改性聚砜血液透析膜及其制备方法 | |
Liu et al. | Heparin reduced dialysis through a facile anti-coagulant coating on flat and hollow fiber membranes | |
Su et al. | Polyethersulfone hollow fiber membranes for hemodialysis | |
US6355730B1 (en) | Permselective membranes and methods for their production | |
KR100424995B1 (ko) | 선택투과성 막 및 그의 제조방법 | |
CN105521715B (zh) | 一种共混聚偏氟乙烯中空纤维膜及其制备方法 | |
CN109603591A (zh) | 抗凝血复合中空纤维膜及制备方法 | |
CN109316982B (zh) | 一种类肝素改性聚氨酯/聚醚砜共混中空纤维膜及其制备方法 | |
Ismail et al. | Hemodialysis membrane for blood purification process | |
WO2005046763A1 (ja) | 血液浄化用中空糸膜及びこれを用いた血液浄化器 | |
CN105013355B (zh) | 类肝素化聚醚砜中空纤维膜及其制备方法与用途 | |
Raharjo et al. | Effect of polymer loading on membrane properties and uremic toxins removal for hemodialysis application | |
CN112044289B (zh) | 一种高效能血液透析仪器用透析膜及制备方法 | |
KR20230087526A (ko) | 고정된 항응고제를 갖는 막 및 이의 제조 방법 | |
CN109316985B (zh) | 一种磺化二羟丙基壳聚糖改性聚氨酯血液透析膜及其制备方法 | |
JPH07289866A (ja) | ポリスルホン系選択透過膜 | |
CN114232129B (zh) | 聚醚砜纤维及其制备方法和用途 | |
CN117358074A (zh) | 抗凝血血液透析膜及其制备方法 | |
Zaman et al. | Dialysis treatment, in vitro, and anticoagulation activity of polysulfone-polyacrylamide based-blend membranes: an experimental study | |
CN117414709A (zh) | 聚醚砜双o-乙酰化甲壳素共混中空纤维膜及其制备方法 | |
CN117679978A (zh) | 用于血液净化的抗凝血生物材料及其制备方法和应用 |
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 | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210921 |
|
CF01 | Termination of patent right due to non-payment of annual fee |