CN116602941A - 醋酸丁酸纤维素基载药复合膜制作工艺 - Google Patents
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- 229940079593 drug Drugs 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 18
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- 125000004063 butyryl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims abstract description 14
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 claims abstract description 10
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- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 4
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Abstract
本发明公开了醋酸丁酸纤维素基载药复合膜制作工艺,包括以下步骤:步骤一:采用高丁酰基,醋酸丁酸纤维素(50%‑54%)作为原料进行加工,醋酸丁酸纤维素由乙酰基和丁酰基混合的纤维素混合酯,乙酰基、丁酰基和羟基组成,取醋酸丁酸纤维素2500mg,加入丙酮40mL加入聚乙二醇400 750mg搅拌混合均匀后加入1000mgVE溶液作为脂溶性药物,本发明使用醋酸丁酸纤维素与聚乙二醇400采用流延成膜法可以制成新型无毒绿色环保、简单易得、质量高效具有缓控释药能力的载药载体,并且对于脂溶性和水溶性药物均有良好的包裹作用。
Description
技术领域
本发明涉及复合膜制作工艺,特别涉及醋酸丁酸纤维素基载药复合膜制作工艺。
背景技术
近几年,储量丰富、环保可再生的生物基材料在生物医药、食品包装等领域受到了广泛关注,纤维素是其重要来源之一。纤维素是自然界含量最丰富的生物质资源,其来源广泛,可以从棉花和木浆中获得,纤维素具有价格低廉、可再生、可降解、无毒、可衍生化等优点。纤维素是天然高分子材料,应用于农业生产中不仅能有效降解,易于穿透,还可提高土地的保水性和抗病虫害,能有效达到生产需求又能满足环境保护的要求,非常适合作为包膜材料。天然纤维素分子内和分子间有大量的氢键,所以很难溶于常规溶剂,限制了进一步的加工,不利于进一步地开发和利用纤维素材料。但纤维素中存在多个羟基,因此可以与多种试剂反应生成纤维素衍生物,以获得更好的性能,例如醋酸丁酸纤维素,而且基于纤维素的复合材料可通过薄膜化制备各种功能性薄膜,在气体分离、食品包装、生物医用、农业生产、水处理等多个领域被广泛应用。
醋酸丁酸纤维素,简称CAB,由纤维素分子中羟基分别和乙酸、丁酸酯化而得,形成乙酰基和丁酰基的纤维素酯,为白色颗粒。能与高沸点增塑剂相混,有很好的互溶性,能溶解于多种有机溶剂,耐弯曲、能较好地保持色泽,耐水解,流平性好,透明度高,是一种广泛应用于医药和生物医学应用的生物相容性聚合物。所以醋酸丁酸纤维素可以作为主要成膜物,一般用丙酮作为其溶剂,丙酮易挥发,在制备膜时易除去,但CAB耐溶剂性能较差,且抗拉强度也欠佳,所以对CAB的改性是必要的。
发明内容
本发明要解决的技术问题是克服现有技术的缺陷,提供醋酸丁酸纤维素基载药复合膜制作工艺。
为了解决上述技术问题,本发明提供了如下的技术方案:
本发明醋酸丁酸纤维素基载药复合膜制作工艺,包括以下步骤:
步骤一:采用高丁酰基,醋酸丁酸纤维素(50%-54%)作为原料进行加工,醋酸丁酸纤维素由乙酰基和丁酰基混合的纤维素混合酯,乙酰基、丁酰基和羟基组成,取醋酸丁酸纤维素2500mg,加入丙酮40mL加入聚乙二醇400 750mg搅拌混合均匀后加入1000mgVE溶液作为脂溶性药物,
步骤二:加入2mL甘油和6滴司盘80,继续搅拌直至醋酸丁酸纤维素完全溶解,放入超声仪中进行震荡,静止30min消除溶液气泡。
步骤三:取大小相等的培养玻璃皿,缓慢均匀倒入溶液放置干燥通风处静置,2小时后观察已经初步形成膜状,加入过量超净水使膜浸泡在水中,浸泡24小时后拿出复合膜进行自然干燥制成。
与现有技术相比,本发明的有益效果如下:
本发明使用醋酸丁酸纤维素与聚乙二醇400采用流延成膜法可以制成新型无毒绿色环保、简单易得、质量高效具有缓控释药能力的载药载体,并且对于脂溶性和水溶性药物均有良好的包裹作用。
具体实施方式
以下对本发明的优选实施例进行说明,应当理解,此处所描述的优选实施例仅用于说明和解释本发明,并不用于限定本发明。
实施例1
本发明提供醋酸丁酸纤维素基载药复合膜制作工艺,包括以下步骤:
步骤一:采用高丁酰基,醋酸丁酸纤维素(50%-54%)作为原料进行加工,醋酸丁酸纤维素由乙酰基和丁酰基混合的纤维素混合酯,乙酰基、丁酰基和羟基组成,取醋酸丁酸纤维素2500mg,加入丙酮40mL加入聚乙二醇400 750mg搅拌混合均匀后加入1000mgVE溶液作为脂溶性药物,
步骤二:加入2mL甘油和6滴司盘80,继续搅拌直至醋酸丁酸纤维素完全溶解,放入超声仪中进行震荡,静止30min消除溶液气泡。
步骤三:取大小相等的培养玻璃皿,缓慢均匀倒入溶液放置干燥通风处静置,2小时后观察已经初步形成膜状,加入过量超净水使膜浸泡在水中,浸泡24小时后拿出复合膜进行自然干燥制成。
具体的,醋酸丁酸纤维素,简称CAB,由纤维素分子中羟基分别和乙酸、丁酸酯化而得,形成乙酰基和丁酰基的纤维素酯,为白色颗粒。能与高沸点增塑剂相混,有很好的互溶性,能溶解于多种有机溶剂,耐弯曲、能较好地保持色泽,耐水解,流平性好,透明度高[7],是一种广泛应用于医药和生物医学应用的生物相容性聚合物。所以醋酸丁酸纤维素可以作为主要成膜物,一般用丙酮作为其溶剂,丙酮易挥发,在制备膜时易除去,但CAB耐溶剂性能较差,且抗拉强度也欠佳,所以对CAB的改性是必要的。聚乙二醇400,简称PEG 400,为无色粘稠液体,可溶于水和多种有机溶剂,如丙酮、二氯甲烷等,具有良好的柔性和生物相容性,CAB和PEG之间存在氢键[12],往CAB中加入PEG 400得到的聚合物除了具有CAB本身具有的优点外,还具备PEG良好的弹性和生物相容性,由于PEG具有较高的机械刚度,已有研究报道可生物降解的CAB-PEG复合膜具有优越的拉伸性能。即加入PEG 400会降低膜的机械刚度而增强膜的拉伸性能。因此加入PEG 400对CAB进行改性是可行的,CAB作为一种重要的涂料添加剂,广泛地应用于皮革光亮剂、木材涂料、汽车漆、油墨等领域。包膜材料就是影响缓控释包膜肥料应用效果最主要的影响因素。包膜材料可分为无机和有机两大类,无机包膜材料相较于有机包膜材料,释放不易控制,效果不好,因此,对有机包膜材料的研究很有必要。有机包膜材料可分为天然、合成、半合成高分子包膜材料,半合成高分子材料是对天然高分子材料改性后的成果,也可以由天然高分子与合成高分子共聚形成,醋酸丁酸纤维素属于半合成高分子材料。缓控释肥的原理是。肥料被投入使用后,养分缓慢释放出来,使养分的释放速率与农作物的吸收需求相适应,避免资源浪费。通过在普通肥料的表面包一层或多层保护膜,把肥料包裹在里面,肥料进入土壤后,水分渗进包膜中的肥料内部,将肥料溶解后透过包膜以一定的速度释放到土壤里,以便农作物吸收。
最后应说明的是:以上所述仅为本发明的优选实施例而已,并不用于限制本发明,尽管参照前述实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (1)
1.醋酸丁酸纤维素基载药复合膜制作工艺,其特征在于,包括以下步骤:
步骤一:采用高丁酰基,醋酸丁酸纤维素(50%-54%)作为原料进行加工,醋酸丁酸纤维素由乙酰基和丁酰基混合的纤维素混合酯,乙酰基、丁酰基和羟基组成,取醋酸丁酸纤维素2500mg,加入丙酮40mL加入聚乙二醇400 750mg搅拌混合均匀后加入1000mgVE溶液作为脂溶性药物,
步骤二:加入2mL甘油和6滴司盘80,继续搅拌直至醋酸丁酸纤维素完全溶解,放入超声仪中进行震荡,静止30min消除溶液气泡。
步骤三:取大小相等的培养玻璃皿,缓慢均匀倒入溶液放置干燥通风处静置,2小时后观察已经初步形成膜状,加入过量超净水使膜浸泡在水中,浸泡24小时后拿出复合膜进行自然干燥制成。
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