CN113788960A - 一种高力学强度聚乙烯醇-丙烯酰胺-琼脂糖水凝胶的制备方法 - Google Patents
一种高力学强度聚乙烯醇-丙烯酰胺-琼脂糖水凝胶的制备方法 Download PDFInfo
- Publication number
- CN113788960A CN113788960A CN202110992133.1A CN202110992133A CN113788960A CN 113788960 A CN113788960 A CN 113788960A CN 202110992133 A CN202110992133 A CN 202110992133A CN 113788960 A CN113788960 A CN 113788960A
- Authority
- CN
- China
- Prior art keywords
- hydrogel
- polyvinyl alcohol
- mixed solution
- acrylamide
- agarose
- 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
- 239000000017 hydrogel Substances 0.000 title claims abstract description 88
- 229920000936 Agarose Polymers 0.000 title claims abstract description 32
- 229920002554 vinyl polymer Polymers 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 23
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 23
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000010382 chemical cross-linking Methods 0.000 claims abstract description 5
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 4
- 239000011259 mixed solution Substances 0.000 claims description 35
- 238000007710 freezing Methods 0.000 claims description 20
- 230000008014 freezing Effects 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 15
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical class [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- KWYHDKDOAIKMQN-UHFFFAOYSA-N N,N,N',N'-tetramethylethylenediamine Chemical compound CN(C)CCN(C)C KWYHDKDOAIKMQN-UHFFFAOYSA-N 0.000 claims description 8
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000005457 ice water Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000000243 solution Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 21
- 210000001612 chondrocyte Anatomy 0.000 abstract description 16
- 210000001188 articular cartilage Anatomy 0.000 abstract description 13
- 230000035755 proliferation Effects 0.000 abstract description 8
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 5
- 239000001257 hydrogen Substances 0.000 abstract description 5
- 238000004132 cross linking Methods 0.000 abstract description 3
- 239000011159 matrix material Substances 0.000 abstract description 2
- 238000005057 refrigeration Methods 0.000 abstract description 2
- 125000003158 alcohol group Chemical group 0.000 abstract 1
- 238000010257 thawing Methods 0.000 description 12
- 210000004027 cell Anatomy 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 108010087230 Sincalide Proteins 0.000 description 4
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 4
- 238000010609 cell counting kit-8 assay Methods 0.000 description 4
- IZTQOLKUZKXIRV-YRVFCXMDSA-N sincalide Chemical compound C([C@@H](C(=O)N[C@@H](CCSC)C(=O)NCC(=O)N[C@@H](CC=1C2=CC=CC=C2NC=1)C(=O)N[C@@H](CCSC)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(N)=O)NC(=O)[C@@H](N)CC(O)=O)C1=CC=C(OS(O)(=O)=O)C=C1 IZTQOLKUZKXIRV-YRVFCXMDSA-N 0.000 description 4
- 239000012047 saturated solution Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 206010007710 Cartilage injury Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000012669 compression test Methods 0.000 description 2
- 238000012258 culturing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000004676 glycans Chemical class 0.000 description 2
- 239000001963 growth medium Substances 0.000 description 2
- 229920001282 polysaccharide Polymers 0.000 description 2
- 239000005017 polysaccharide Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 102000008186 Collagen Human genes 0.000 description 1
- 108010035532 Collagen Proteins 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 125000004442 acylamino group Chemical group 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000000975 bioactive effect Effects 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 230000004663 cell proliferation Effects 0.000 description 1
- 229920001436 collagen Polymers 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 239000003102 growth factor Substances 0.000 description 1
- 229920001477 hydrophilic polymer Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000000451 tissue damage Effects 0.000 description 1
- 231100000827 tissue damage Toxicity 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
- C08J3/075—Macromolecular gels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/14—Macromolecular materials
- A61L27/26—Mixtures of macromolecular compounds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
- A61L27/52—Hydrogels or hydrocolloids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F261/00—Macromolecular compounds obtained by polymerising monomers on to polymers of oxygen-containing monomers as defined in group C08F16/00
- C08F261/02—Macromolecular compounds obtained by polymerising monomers on to polymers of oxygen-containing monomers as defined in group C08F16/00 on to polymers of unsaturated alcohols
- C08F261/04—Macromolecular compounds obtained by polymerising monomers on to polymers of oxygen-containing monomers as defined in group C08F16/00 on to polymers of unsaturated alcohols on to polymers of vinyl alcohol
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2430/00—Materials or treatment for tissue regeneration
- A61L2430/06—Materials or treatment for tissue regeneration for cartilage reconstruction, e.g. meniscus
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2329/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2329/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2329/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2405/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2401/00 or C08J2403/00
- C08J2405/12—Agar-agar; Derivatives thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Transplantation (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dermatology (AREA)
- Materials For Medical Uses (AREA)
Abstract
本发明属于关节软骨替代材料领域,提供了一种高力学强度聚乙烯醇‑丙烯酰胺‑琼脂糖水凝胶的制备方法。以聚乙烯醇和丙烯酰胺为基质材料,加入少量琼脂糖。丙烯酰胺通过化学交联剂先形成第一网络,聚乙烯醇在冷冻循环中物理交联形成第二网络。琼脂糖可以与聚乙烯醇和丙烯酰胺的分子链形成氢键,进一步提高水凝胶的机械强度。此外,琼脂糖的引入使水凝胶能够粘附软骨细胞并促进软骨细胞增殖。该方法制备的水凝胶有望应用于关节软骨置换。
Description
技术领域
本发明属于生物材料领域,特别是关节软骨损伤的替代材料领域,具体涉及一种高力学强度的聚乙烯醇-丙烯酰胺-琼脂糖水凝胶的制备方法。
背景技术
水凝胶材料具有高含水率、低摩擦系数、良好的化学稳定性等特点,有望用于生物组织损伤的修复。但是传统水凝胶通常由亲水聚合物的单一网络组成,力学性能差,难以满足关节软骨高力学强度的要求,限制了水凝胶在关节软骨替代材料领域的应用。与此同时,作为关节软骨替代材料还必须具有良好的生物相容性。在水凝胶中添加大量生物活性成分(如明胶、胶原蛋白、生长因子等)可以有效提高水凝胶材料的生物相容性,但这些材料的引入,通常会导致水凝胶的力学性能大幅下降。研发兼具优异力学性能和良好生物相容性的水凝胶材料仍然是一个巨大的挑战。
前人的研究表明,双网络结构可以有效提升水凝胶力学性能。聚乙烯醇水凝胶有相对较高的力学性能,而丙烯酰胺由于结构中含有大量的酰胺基,易形成氢键,适合作为共价交联网络的组分,因此聚乙烯醇-丙烯酰胺(PVA-AAm)双网络水凝胶体系成为研发高力学强度水凝胶领域的热点。尽管双网络结构可提升水凝胶材料的力学性能,但现有PVA-AAm双网络水凝胶的力学性能与关节软骨的力学性能仍有差距(Journal of MaterialsScience,2019,54,3368-3382;Journal of Materials Chemistry A,2020,8,6776-6784;Materials Letters,2018,207,53-56)。作为关节软骨材料替代材料,力学性能需要同时满足如下条件:压缩模量>0.53MPa,压缩强度>4MPa,拉伸强度>0.8MPa。此外,目前报道的这些聚乙烯醇-丙烯酰胺水凝胶材料的生物相容性仍不明确。
本发明将琼脂糖(AG)引入聚乙烯醇-丙烯酰胺水凝胶体系,其作用包括两方面:(1)琼脂糖可与水凝胶中聚乙烯醇、丙烯酰胺大分子链产生强氢键作用,提升水凝胶的力学性能,(2)琼脂糖具有良好的生物相容性,琼脂糖的引入可以提高水凝胶对细胞的粘附能力,促进水凝胶的生物相容性。本发明的水凝胶在压缩和拉伸两方面都表现出优异的力学性能,具有0.9MPa的压缩模量和8.17MPa的压缩极限,同时具有0.97MPa的杨氏模量和2.45MPa的拉伸极限,满足关节软骨替代材料的性能需求。此外,细胞实验表明研发的水凝胶具有良好的软骨细胞黏附性和促进细胞增殖的能力。发明的水凝胶有望应用于关节软骨损伤的替代材料。
发明内容
针对聚乙烯醇-丙烯酰胺水凝胶力学性能差、生物相容性不佳等问题,本发明提供一种聚乙烯醇-丙烯酰胺-琼脂糖(PVA-AAm-AG)水凝胶的制备方法。采用聚乙烯醇和丙烯酰胺为基体材料,通过化学交联与物理交联的冷冻解冻法结合交联成胶,该制备方法操作简单,成胶速度快,成胶后胶体力学强度优异。琼脂糖可与聚乙烯醇和丙烯酰胺的大分子链产生强氢键作用,提升水凝胶的力学性能。而且,由于在水凝胶中引入天然多糖,制备的水凝胶表现出良好的生物相容性,有望在关节软骨替代材料领域获得应用。
为了实现上述目的,本发明的技术方案为:
一种高力学强度聚乙烯醇-丙烯酰胺-琼脂糖水凝胶的制备方法,包括以下步骤:
第一步,将聚乙烯醇、丙烯酰胺、琼脂糖、化学交联剂N,N’-亚甲基双丙烯酰胺(NNMBA)按比例加入去离子水中,90-99℃恒温水浴加热,持续搅拌至聚乙烯醇完全溶解且其余物质均匀混合,得到混合液A;,在混合液A中,聚乙烯醇的质量分数为10~20wt.%,丙烯酰胺的质量分数为10~20wt.%,N,N’-亚甲基双丙烯酰胺的质量分数0.1~0.5wt.%,琼脂糖的质量分数为0.5~5wt.%;
第二步,将混合液A置于室温下持续搅拌,温度降至20~50℃后备用;在上述混合液A中加入四甲基乙二胺(TEMED),持续搅拌至混合均匀,后在冰水浴环境下加入饱和过硫酸铵(APS)水溶液,得到混合溶液B;每100mL混合液A中,加入100~400μL四甲基乙二胺,加入3~6mL饱和过硫酸铵溶液;
第三步,将混合液B倒入模具中,对其进行冷冻解冻循环,得到聚乙烯醇-丙烯酰胺-琼脂糖水凝胶;冷冻解冻循环指混合液B冷冻成型后取出解冻,重复多次至形成PVA-AAm-AG水凝胶;冷冻温度为-18~-25℃,冷冻时间为12~20h,解冻温度为15~25℃,解冻时间为6~12h;循环2次以上。
本发明提出的聚乙烯醇-丙烯酰胺-琼脂糖水凝胶的成胶机理:将聚乙烯醇、丙烯酰胺两种基体混合加热溶解后,丙烯酰胺通过化学交联剂先形成第一网络,聚乙烯醇在冷冻循环中物理交联形成第二网络,两种基体在成胶后,形成互穿网络,该结构具有单网络水凝胶所不具备的结构优势,且两种基体的大分子链之间会反应产生共价键交联,进一步强化了水凝胶的力学性能。琼脂糖是一种天然多糖,可以与聚乙烯醇和丙烯酰胺的大分子链形成氢键,促进水凝胶分子链的聚集,提升了材料的力学强度。通过多次冷冻解冻循环,使水凝胶的结构进一步优化,大幅提升水凝胶的力学性能。
与现有技术相比,本发明的有益效果为:
本发明提出PVA-AAm-AG水凝胶的制备方法,通过引入琼脂糖,增强了水凝胶的力学性能,同时改善了水凝胶的生物相容性。本发明提出的方法操作简单,对聚乙烯醇-丙烯酰胺水凝胶力学性能提升效果明显,同时,本方法制备得到水凝胶可以粘附软骨细胞,促进软骨细胞增殖,有利于其在关节软骨替代材料领域中的应用。
附图说明
图1为PVA-AAm-AG水凝胶制备流程图;
图2为PVA-AAm-AG水凝胶扫描电镜形貌图;
图3为PVA-AAm-AG水凝胶压缩模量图;
图4为PVA-AAm-AG水凝胶对软骨细胞的吸附率
图5为PVA-AAm-AG水凝胶接种细胞的增殖率图。
具体实施方式
以下将结合技术实现方案和附图说明中的图1、图2和图3,详细介绍本发明的具体实施方式。
图1是PVA-AAm-AG水凝胶制备流程图,按照流程图操作可制备得到PVA-AAm-AG水凝胶。图2是所制备水凝胶的微观形貌,将制备的水凝胶切成薄片,冷冻真空干燥后观察水凝胶的断面结构。图3是所制备水凝胶的压缩性能图,对圆柱形水凝胶样品(直径:15.3mm)进行无侧限单轴压缩试验,应变速率为30%/min。测试前用游标卡尺测量每个样品的厚度。在测试之前,顶部和底部平台用生理盐水润滑,以接近纯滑动状态,选取应变0.1-0.2段计算割线压缩模量。从图中可以看出,相比于同等浓度的纯PVA水凝胶和纯丙烯酰胺水凝胶,本方法制备所得的PVA-AAm-AG水凝胶压缩模量大幅提升,可以满足关节软骨替代材料所需的力学性能。图4是软骨细胞黏附率,以无琼脂糖的水凝胶在4小时后的黏附情况作为归一化的标准。将大鼠的关节软骨细胞重悬在培养基中,接种在水凝胶上,培养4小时后取出水凝胶并冲洗表面,通过CCK-8法检测水凝胶表面黏附的细胞含量。继续将接种有大鼠软骨细胞的水凝胶在二氧化碳培养箱中培养7天,在不同的时间间隔取出水凝胶,通过CCK-8法检测细胞在水凝胶的增殖情况。从图中可以看出,添加琼脂糖后,水凝胶黏附细胞的能力大大增加。图5是软骨细胞增殖率图,以无琼脂糖的水凝胶在1天后的软骨细胞增殖情况作为归一化的标准,可以发现在添加琼脂糖之后,软骨细胞在水凝胶中的增殖率有显著提升。
实施例1
a)将10g PVA、10gAAm、0.5g琼脂糖、0.1gN,N’-亚甲基双丙烯酰胺加入79mL去离子水中,90℃恒温水浴加热,搅拌至PVA完全溶解,得到混合液A。
b)将混合液A置于室温下持续搅拌,温度降至20℃后备用。将100μL四甲基乙二胺逐滴加入上述混合液A,在冰水浴环境下加入3mL过硫酸铵饱和溶液,搅拌得到混合液B。
c)将混合液B倒入模具中,进行循环冷冻解冻,冷冻温度为-18℃,冷冻时间为12h,解冻温度为15℃,解冻时间为6h。循环次数为2次,得到聚乙烯醇-丙烯酰胺水凝胶。
基于上述步骤制备的PVA-AAm-AG水凝胶,开展形貌观察、力学性能、生物相容性实验。具体步骤如下:
1)形貌观察:将制备的水凝胶用液氮冷冻后淬断,进行冷冻真空干燥处理,使用扫描电镜对其淬断面形貌进行观察。
2)力学性能实验:将制备的圆柱形水凝胶样品(直径:15.3mm)进行无侧限单轴压缩试验,应变速率为30%/min。测试前用游标卡尺测量每个样品的厚度。
3)生物相容性实验:将大鼠的关节软骨细胞重悬在培养基中,接种在水凝胶上,培养4小时后取出水凝胶并冲洗表面,通过CCK-8法检测水凝胶表面黏附的细胞含量。继续将接种有大鼠软骨细胞的水凝胶在二氧化碳培养箱中培养7天,在不同的时间间隔取出水凝胶,通过CCK-8法检测细胞在水凝胶的增殖情况。
实施例2
a)将20g PVA、20gAAm、5g琼脂糖、0.5gN,N’-亚甲基双丙烯酰胺加入55mL去离子水中,99℃恒温水浴加热,搅拌至PVA完全溶解,得到混合液A。
b)将混合液A置于室温下持续搅拌,温度降至50℃后备用。将200μL四甲基乙二胺逐滴加入上述混合液A,在冰水浴环境下加入6mL过硫酸铵饱和溶液,搅拌得到混合液B。
c)将混合液B倒入模具中,进行循环冷冻解冻,冷冻温度为-25℃,冷冻时间为20h,解冻温度为25℃,解冻时间为12h。循环次数为4次,得到聚乙烯醇-丙烯酰胺水凝胶。
基于上述步骤制备的PVA-AAm-AG水凝胶,开展形貌观察、力学性能、生物相容性实验,具体步骤如实施例1。
实施例3
a)将15g PVA、15gAAm、2.5g琼脂糖、0.25gN,N’-亚甲基双丙烯酰胺加入67mL去离子水中,95℃恒温水浴加热,搅拌至PVA完全溶解,得到混合液A。
b)将混合液A置于室温下持续搅拌,温度降至35℃后备用。将450μL四甲基乙二胺逐滴加入上述混合液A,在冰水浴环境下加入4.5mL过硫酸铵饱和溶液,搅拌得到混合液B。
c)将混合液B倒入模具中,进行循环冷冻解冻,冷冻温度为-22℃,冷冻时间为16h,解冻温度为20℃,解冻时间为9h。循环次数为3次,得到聚乙烯醇-丙烯酰胺水凝胶。
基于上述步骤制备的PVA-AAm-AG水凝胶,开展形貌观察、力学性能、生物相容性实验,具体步骤如实施例1。
以上所述实施例仅表达本发明的实施方式,但并不能因此而理解为对本发明专利的范围的限制。应当指出,对于本领域的技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些均属于本发明的保护范围。
Claims (2)
1.一种高力学强度聚乙烯醇-丙烯酰胺-琼脂糖水凝胶的制备方法,其特征在于,包括以下步骤:
第一步,将聚乙烯醇、丙烯酰胺、琼脂糖、化学交联剂N,N’-亚甲基双丙烯酰胺按比例加入去离子水中,90-99℃恒温水浴加热,持续搅拌至聚乙烯醇完全溶解且其余物质均匀混合,得到混合液A;在混合液A中,聚乙烯醇的质量分数为10~20wt.%,丙烯酰胺的质量分数为10~20wt.%,N,N’-亚甲基双丙烯酰胺的质量分数0.1~0.5wt.%,琼脂糖的质量分数为0.5~5wt.%;
第二步,将混合液A置于室温下持续搅拌,温度降至20~50℃后备用;在上述混合液A中加入四甲基乙二胺,持续搅拌至混合均匀,后在冰水浴环境下加入饱和过硫酸铵水溶液,得到混合溶液B;每100mL混合液A中,加入100~400μL四甲基乙二胺,加入3~6mL饱和过硫酸铵溶液;
第三步,将混合液B倒入模具中,对其进行冷冻解冻循环,得到聚乙烯醇-丙烯酰胺-琼脂糖水凝胶。
2.根据权利要求1所述的制备方法,其特征在于,所述的冷冻解冻循环指混合液B冷冻成型后取出解冻,重复多次至形成PVA-AAm-AG水凝胶;冷冻温度为-18~-25℃,冷冻时间为12~20h,解冻温度为15~25℃,解冻时间为6~12h;循环2次以上。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110992133.1A CN113788960A (zh) | 2021-08-27 | 2021-08-27 | 一种高力学强度聚乙烯醇-丙烯酰胺-琼脂糖水凝胶的制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110992133.1A CN113788960A (zh) | 2021-08-27 | 2021-08-27 | 一种高力学强度聚乙烯醇-丙烯酰胺-琼脂糖水凝胶的制备方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN113788960A true CN113788960A (zh) | 2021-12-14 |
Family
ID=78876508
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202110992133.1A Pending CN113788960A (zh) | 2021-08-27 | 2021-08-27 | 一种高力学强度聚乙烯醇-丙烯酰胺-琼脂糖水凝胶的制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN113788960A (zh) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114805866A (zh) * | 2022-05-23 | 2022-07-29 | 贵州黔材科技发展有限公司 | 复合交联的三重网络结构离子导电水凝胶及其制备方法 |
CN114796620A (zh) * | 2022-04-24 | 2022-07-29 | 广东顺德工业设计研究院(广东顺德创新设计研究院) | 一种用作医用植入材料的互穿网络水凝胶及其制备方法和应用 |
CN114920958A (zh) * | 2022-05-26 | 2022-08-19 | 大连理工大学 | 一种具有方向性微结构的聚乙烯醇-琼脂糖水凝胶的制备方法及应用 |
CN115569235A (zh) * | 2022-06-29 | 2023-01-06 | 湖南工业大学 | 一种基于脂质润滑的水凝胶的制备方法 |
CN115785598A (zh) * | 2022-12-09 | 2023-03-14 | 河北工业大学 | 一种Janus海绵状水凝胶及其制备方法和应用 |
CN116253904A (zh) * | 2022-11-28 | 2023-06-13 | 海南华创槟榔研究院 | 可促进成骨细胞增殖的槟榔多酚水凝胶及制备方法与应用 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107185051A (zh) * | 2017-05-27 | 2017-09-22 | 大连理工大学 | 聚乙烯醇水凝胶及其制备方法 |
CN107903406A (zh) * | 2017-09-14 | 2018-04-13 | 刘志勇 | 一种高强度自修复三网络水凝胶的制备方法 |
CN109836596A (zh) * | 2019-03-04 | 2019-06-04 | 湖北工业大学 | 强氢键作用高强度与高粘附的支链淀粉复合水凝胶的制备方法 |
US20200338236A1 (en) * | 2019-04-24 | 2020-10-29 | The Texas A&M University System | Double network hydrogels for synthetic cartilage |
-
2021
- 2021-08-27 CN CN202110992133.1A patent/CN113788960A/zh active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107185051A (zh) * | 2017-05-27 | 2017-09-22 | 大连理工大学 | 聚乙烯醇水凝胶及其制备方法 |
CN107903406A (zh) * | 2017-09-14 | 2018-04-13 | 刘志勇 | 一种高强度自修复三网络水凝胶的制备方法 |
CN109836596A (zh) * | 2019-03-04 | 2019-06-04 | 湖北工业大学 | 强氢键作用高强度与高粘附的支链淀粉复合水凝胶的制备方法 |
US20200338236A1 (en) * | 2019-04-24 | 2020-10-29 | The Texas A&M University System | Double network hydrogels for synthetic cartilage |
Non-Patent Citations (2)
Title |
---|
HAILONG FAN, JIAHUI WANG, ZHAOXIA JIN: "Tough, Swelling-Resistant, Self-Healing, and Adhesive Dual-Cross-Linked Hydrogels Based on Polymer-Tannic Acid Multiple Hydrogen Bonds", 《MACROMOLECULES》 * |
徐晖: "《药用高分子材料学》", 31 December 2019, 中国医药科技出版社 * |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114796620A (zh) * | 2022-04-24 | 2022-07-29 | 广东顺德工业设计研究院(广东顺德创新设计研究院) | 一种用作医用植入材料的互穿网络水凝胶及其制备方法和应用 |
CN114796620B (zh) * | 2022-04-24 | 2023-09-29 | 广东顺德工业设计研究院(广东顺德创新设计研究院) | 一种用作医用植入材料的互穿网络水凝胶及其制备方法和应用 |
CN114805866A (zh) * | 2022-05-23 | 2022-07-29 | 贵州黔材科技发展有限公司 | 复合交联的三重网络结构离子导电水凝胶及其制备方法 |
CN114920958A (zh) * | 2022-05-26 | 2022-08-19 | 大连理工大学 | 一种具有方向性微结构的聚乙烯醇-琼脂糖水凝胶的制备方法及应用 |
CN115569235A (zh) * | 2022-06-29 | 2023-01-06 | 湖南工业大学 | 一种基于脂质润滑的水凝胶的制备方法 |
CN115569235B (zh) * | 2022-06-29 | 2023-12-22 | 湖南工业大学 | 一种基于脂质润滑的水凝胶的制备方法 |
CN116253904A (zh) * | 2022-11-28 | 2023-06-13 | 海南华创槟榔研究院 | 可促进成骨细胞增殖的槟榔多酚水凝胶及制备方法与应用 |
CN116253904B (zh) * | 2022-11-28 | 2023-10-31 | 海南华创槟榔研究院 | 可促进成骨细胞增殖的槟榔多酚水凝胶及制备方法与应用 |
CN115785598A (zh) * | 2022-12-09 | 2023-03-14 | 河北工业大学 | 一种Janus海绵状水凝胶及其制备方法和应用 |
CN115785598B (zh) * | 2022-12-09 | 2024-02-13 | 河北工业大学 | 一种Janus海绵状水凝胶及其制备方法和应用 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN113788960A (zh) | 一种高力学强度聚乙烯醇-丙烯酰胺-琼脂糖水凝胶的制备方法 | |
CN109762182B (zh) | 一种高强度-多孔结构聚乙烯醇-单宁酸水凝胶的制备方法及应用 | |
WO2023024055A1 (en) | Preparation method of polyvinyl alcohol-acrylamide -agarose hydrogelwith high mechanical strength | |
Dragusin et al. | Novel gelatin–PHEMA porous scaffolds for tissue engineering applications | |
Davidenko et al. | Collagen–hyaluronic acid scaffolds for adipose tissue engineering | |
Chen et al. | Preparation and characterization of oxidized alginate covalently cross-linked galactosylated chitosan scaffold for liver tissue engineering | |
CN110229374A (zh) | 一种高强度取向型聚乙烯醇水凝胶的制备方法及应用 | |
CN110760152B (zh) | 一种抗冻水凝胶及其制备方法与应用 | |
CN113563534B (zh) | 一种复合聚丙烯酰胺凝胶及其制备方法和应用 | |
CN112778543B (zh) | 一种用于肌肉干细胞培养的交联水凝胶的制备方法及应用 | |
CN112759774A (zh) | 一种力学增强明胶冷冻水凝胶及其制备方法与应用 | |
CN111748107A (zh) | 一种MXene材料增强的导电水凝胶 | |
Zhang et al. | A novel single precursor-based biodegradable hydrogel with enhanced mechanical properties | |
Bonina et al. | pH-sensitive hydrogels composed of chitosan and polyacrylamide–preparation and properties | |
CN105646913A (zh) | 一种具有快速吸液和止血性能的藻酸盐复合水凝胶及制备方法 | |
Li et al. | Preparation, mechanical properties, fatigue and tribological behavior of double crosslinked high strength hydrogel | |
CN112646203B (zh) | 自润滑高强互穿网络水凝胶仿生关节软骨及其制备方法 | |
CN113583455B (zh) | 一种胶原蛋白-改性壳聚糖双网络水凝胶、生物墨水、制备方法和应用 | |
CN112940294A (zh) | 一种pva/ha双网络水凝胶及其制备方法和应用 | |
CN114736332B (zh) | 一种酶促生物盐凝胶的制备方法和应用 | |
CN114437373B (zh) | 一种氨基酸复合自由基聚合型水凝胶及其制备方法和用途 | |
CN110272548B (zh) | 一种提高水凝胶导电性的方法 | |
CN109054273B (zh) | 一种双网络水凝胶及其制备方法 | |
CN113952506B (zh) | 一种仿生软骨表层修复水凝胶的制备方法 | |
CN117695439B (zh) | 一种类骨膜材料及其制备方法与应用 |
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 | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211214 |
|
RJ01 | Rejection of invention patent application after publication |