CN110639442A - 一种负载双氯芬酸钠的天然多糖微胶囊的制备方法 - Google Patents

一种负载双氯芬酸钠的天然多糖微胶囊的制备方法 Download PDF

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CN110639442A
CN110639442A CN201910960910.7A CN201910960910A CN110639442A CN 110639442 A CN110639442 A CN 110639442A CN 201910960910 A CN201910960910 A CN 201910960910A CN 110639442 A CN110639442 A CN 110639442A
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李秋瑾
赵玉
张健飞
赵芷芪
陈霖娜
巩继贤
李政
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Abstract

本发明涉及一种负载双氯芬酸钠的天然多糖微胶囊的制备方法,属于复合材料领域。该方法首先制备了掺杂双氯芬酸钠的CaCO3模板,然后通过静电引力作用在CaCO3模板上逐层自组装大分子聚合物,依次是聚苯乙烯磺酸钠盐(PAH)、海藻酸钠(Alg)、壳聚糖(Chi)和透明质酸(HA),再使用乙二胺四乙酸钠(EDTA)去除CaCO3模板。本发明制备的负载双氯芬酸钠的天然多糖微胶囊具有良好的可控释放性,可将双氯芬酸钠释放在患者的炎症处,从而治疗疾病,在生物医疗领域具有良好的发展前景。

Description

一种负载双氯芬酸钠的天然多糖微胶囊的制备方法
技术领域
本发明涉及一种负载双氯芬酸钠的天然多糖微胶囊的制备方法,属于复合材料领域。
背景技术
通过层层自组装技术,使用聚电解质作为囊壁材料,可制备出一定的厚度、组成以及大小的中空微胶囊。此种微胶囊由于具有良好的稳定性和可控释放性,对药物的传输起到了至关重要的作用。海藻酸钠、壳聚糖、透明质酸等天然多糖大分子材料因具有良好的生物相容性、无毒性和可生物降解性等特点,被广泛应用。双氯芬酸钠属于抗炎药,有明显的消炎、镇痛解热的作用,常用于治疗各种眼科疾病,比如治疗角膜炎,虹膜炎,各种眼部损伤和眼内手术造成的炎症。使用海藻酸钠、壳聚糖、透明质酸等天然大分子材料制备的生物微胶囊因其具有无毒性和良好的生物相容性且可以对负载的药物进行缓释及控制释放,如今被广泛的应用于生物医疗等领域。
本专利将双氯芬酸钠掺杂在碳酸钙模板里,再将海藻酸钠(Alg)、壳聚糖(Chi)、透明质酸(HA)通过静电引力作用形成微胶囊囊壁层,制备出负载双氯芬酸钠的天然多糖微胶囊,此微胶囊具有缓释性能,可将双氯芬酸钠控制释放到患者的炎症处,消除炎症,从而治疗疾病,在药物释放领域具有广阔的应用前景。
发明内容
本发明使用掺杂聚苯乙烯磺酸钠盐(PSS)的Ca(NO3)2·4H2O溶液和掺杂双氯芬酸钠的Na2CO3溶液进行混合,制备掺杂双氯芬酸钠的CaCO3模板,并使用聚丙烯酰胺盐酸盐(PAH)溶液、海藻酸钠(Alg)、壳聚糖(Chi)以及透明质酸(HA)溶液,采用层层自组装技术,将这些天然多糖大分子交替组装在CaCO3模板上,最后用一定浓度的乙二胺四乙酸钠(EDTA)溶液去除CaCO3模板,制备得到负载双氯芬酸钠的天然多糖中空微胶囊。
为实现上述目的,本发明采用的技术方案如下:
(1)模板制备:将双氯芬酸钠溶液与Na2CO3溶液混合,再将混合溶液加入到含有聚苯乙烯磺酸钠盐(PSS)的Ca(NO3)2·4H2O溶液中,静置至溶液分层,离心水洗,即得到掺杂双氯芬酸钠的CaCO3微粒;
(2)天然多糖生物大分子包覆:将制备好的掺杂双氯芬酸钠的CaCO3模板依次在聚丙烯胺盐酸盐(PAH)溶液、海藻酸钠(Alg)溶液、壳聚糖(Chi)溶液、透明质酸(HA)溶液中进行交替组装,每一步组装完成后,振荡一定时间,离心水洗。重复上述步骤,制备所需层数的PAH/Alg/Chi/HA的微粒;
(3)模板去除:将乙二胺四乙酸钠(EDTA)溶液加入到PAH/Alg/Chi/HA的CaCO3微粒中,振荡一定时间,离心水洗。重复以上操作,直至彻底去除CaCO3模板,即得到负载双氯芬酸钠的天然多糖中空微胶囊;
上述步骤(1)中所述Na2CO3溶液的浓度为0.01-1mol/L,双氯芬酸钠的浓度为0.001-0.1mol/L,Ca(NO3)2·4H2O溶液的浓度为0.1-1mol/L,聚苯乙烯磺酸钠盐(PSS)的浓度为1-8mg/mL。
上述步骤(1)中所述静置时间为10-50min。
上述步骤(2)中所述CaCO3微粒溶液的浓度为1-5g/mL。
上述步骤(2)中所述聚丙烯胺盐酸盐(PAH)溶液的浓度为0.5-5g/L,海藻酸钠(Alg)溶液的浓度为0.25-5g/L,壳聚糖(Chi)溶液的浓度为0.25-5g/L,透明质酸(HA)溶液的浓度为0.25-5g/L。
上述步骤(2)中所述分散在天然大分子溶液的CaCO3微粒水浴振荡时间为10-50min,离心洗涤的次数为1-6次。
上述步骤(3)中所述乙二胺四乙酸钠(EDTA)溶液的浓度为0.1-0.5mol/L,溶液用量为10-50mL,分散在乙二胺四乙酸钠溶液中包覆天然大分子的CaCO3微粒振荡时间时间为10-50min。
本发明的优越性:
将海藻酸钠、壳聚糖、透明质酸天然大分子作为壁材制备的微胶囊,具有生物相容性,且无毒性。双氯芬酸钠具有明显的消炎、止痛、解热的作用,常用于治疗各种眼科疾病,比如治疗角膜炎,虹膜炎,各种眼部损伤和眼内手术造成的炎症。将双氯芬酸钠负载到微胶囊内,然后将微胶囊整理在纱布上,通过纱布与人体的接触,使得双氯芬酸钠通过微胶囊缓释到炎症处,治疗疾病。
附图说明
以下附图仅旨在于对本发明做示意性说明及解释,并不限于本发明的范围。其中:
图1:为本发明中实施例1的结果图。
图2:为本发明中实施例2的结果图。
图3:为本发明中实施例3的结果图。
具体实施方式
下面结合附图与具体的实施方案叙述本发明。除非特别说明,本发明中所用的技术手段均为本领域技术人员所公知的方法。另外,实施方案应理解为说明性的,而非限制本发明的范围,本发明的实质和范围仅由权利要求书所限定。对于本领域技术人员而言,在不背离本发明实质和范围的前提下,对这些实施方案中的物料成分和用量进行的各种改变或改动也属于本发明的保护范围。
实施例1:将掺杂聚苯乙烯磺酸钠盐(PSS)的Ca(NO3)2·4H2O溶液和掺杂双氯芬酸钠的Na2CO3溶液进行混合,制备掺杂双氯芬酸钠的CaCO3模板。将制备好的掺杂双氯芬酸钠的CaCO3模板溶液滴加到载玻片上,然后在上面盖上盖玻片,将其放置在超景深三维显微镜(VHX-1000)下进行观察。如图1所示,CaCO3模板尺寸均匀,形态良好。
实施例2:将包覆天然多糖大分子的微球加入EDTA去核,制备得到负载双氯芬酸钠的中空微胶囊,再将微胶囊滴加在载玻片上,盖上盖玻片,将其放在超景深三维显微镜(VHX-1000)下观察。如图2所示,负载双氯芬酸钠的中空微胶囊呈现出中空结构,尺寸也非常均匀。
实施例3:将纯碳酸钙模板和掺杂双氯芬酸钠的碳酸钙模板使用一定浓度的乙二胺四乙酸钠(EDTA)溶液溶解,制成溶液。将溶解的掺杂双氯芬酸钠的碳酸钙模板溶液、溶解的纯碳酸钙模板溶液、聚苯乙烯磺酸钠盐(PSS)溶液、双氯芬酸钠溶液、乙二胺四乙酸钠(EDTA)溶液进行紫外可见分光光度计的照射,生成紫外光谱。如图3所示,双氯芬酸钠的吸收峰为275nm,溶解掺杂双氯芬酸钠的碳酸钙模板与正常碳酸钙模板的紫外光谱比较可看出,掺杂双氯芬酸钠的碳酸钙模板在280nm-290nm之间有突起,从这两方面可看出双氯芬酸钠可负载在天然多糖微胶囊里。

Claims (7)

1.一种负载双氯芬酸钠的天然多糖微胶囊的制备方法,包括以下步骤:
(1)模板制备:将双氯芬酸钠溶液与Na2CO3溶液混合,再将混合溶液加入到含有聚苯乙烯磺酸钠盐(PSS)的Ca(NO3)2·4H2O溶液中,静置至溶液分层,离心水洗,即得到掺杂双氯芬酸钠的CaCO3微粒;
(2)天然多糖生物大分子包覆:将制备好的掺杂双氯芬酸钠的CaCO3模板依次在聚丙烯胺盐酸盐(PAH)溶液、海藻酸钠(Alg)溶液、壳聚糖(Chi)溶液、透明质酸(HA)溶液中进行交替组装,每一步组装完成后,振荡一定时间,离心水洗。重复上述步骤,制备所需层数的PAH/Alg/Chi/HA的微粒;
(3)模板去除:将乙二胺四乙酸钠(EDTA)溶液加入到PAH/Alg/Chi/HA的CaCO3微粒中,振荡一定时间,离心水洗。重复以上操作,直至彻底去除CaCO3模板,即得到负载双氯芬酸钠的天然多糖中空微胶囊。
2.根据权利要求1所述,一种负载双氯芬酸钠的天然多糖微胶囊的制备方法,其特征在于,上述步骤(1)中所述Na2CO3溶液的浓度为0.01-1mol/L,双氯芬酸钠的浓度为0.001-0.1mol/L,Ca(NO3)2·4H2O溶液的浓度为0.1-1mol/L,聚苯乙烯磺酸钠盐(PSS)的浓度为1-8mg/mL。
3.根据权利要求1所述,一种负载双氯芬酸钠的天然多糖微胶囊的制备方法,其特征在于,上述步骤(1)中所述静置时间为10-50min。
4.根据权利要求1所述,一种负载双氯芬酸钠的天然多糖微胶囊的制备方法,其特征在于,上述步骤(2)中所述CaCO3微粒溶液的浓度为1-5g/mL。
5.根据权利要求1所述,一种负载双氯芬酸钠的天然多糖微胶囊的制备方法,其特征在于,上述步骤(2)中所述聚丙烯胺盐酸盐(PAH)溶液的浓度为0.5-5g/L,海藻酸钠(Alg)溶液的浓度为0.25-5g/L,壳聚糖(Chi)溶液的浓度为0.25-5g/L,透明质酸(HA)溶液的浓度为0.25-5g/L。
6.根据权利要求1所述,一种负载双氯芬酸钠的天然多糖微胶囊的制备方法,其特征在于,上述步骤(2)中所述分散在天然大分子溶液的CaCO3微粒水浴振荡时间为10-50min,离心洗涤的次数为1-6次。
7.根据权利要求1所述,一种负载双氯芬酸钠的天然多糖微胶囊的制备方法,其特征在于,上述步骤(3)中所述乙二胺四乙酸钠(EDTA)溶液的浓度为0.1-0.5mol/L,溶液用量为10-50mL,分散在乙二胺四乙酸钠溶液中包覆天然大分子的CaCO3微粒振荡时间时间为10-50min。
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CN110614081A (zh) * 2019-10-09 2019-12-27 天津工业大学 一种磁性微胶囊处理印染废水的方法
CN111389318A (zh) * 2020-04-17 2020-07-10 南京鼓楼医院 一种具备分子筛效应的互穿网络微胶囊制备方法
EP3928859A1 (en) * 2020-06-23 2021-12-29 Omya International AG Surface-reacted calcium carbonate in a process for the production of a loaded microcapsule

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