Synthesis of oligo(poly(ethylene glycol) fumarate).

Synthesis of oligo(poly(ethylene glycol) fumarate).
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DOI:
10.1038/nprot.2012.055
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发表时间:
2012-05-31
期刊:
影响因子:
14.8
通讯作者:
Mikos, Antonios G.
Mikos, Antonios G.
中科院分区:
生物学1区
文献类型:
--
作者:
Kinard, Lucas A.;Kasper, F. Kurtis;Mikos, Antonios G.

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该方案描述了通过聚(乙二醇)(PEG)和富马酰氯的一锅反应合成寡聚(聚(乙二醇)富马酸酯)(OPF)(1-35 kDa)(一种可用于组织工程应用的聚合物)。该过程包括三个部分:首先干燥二氯甲烷和PEG;接着进行反应步骤,其中将富马酰氯和三乙胺滴加到PEG在二氯甲烷中的溶液中;最后过滤产物溶液以除去副产物盐,并将OPF产物结晶两次,洗涤并在真空下干燥。反应受PEG分子量和反应物摩尔比的影响。OPF产物通过热诱导或UV诱导的自由基引发剂通过自由基聚合交联,并且OPF低聚物和所得交联水凝胶的物理性质容易通过改变PEG分子量来定制。OPF水凝胶是可注射的,原位可固化的,并通过酯键的水解进行生物降解。完成本方案所需的预期时间为6 d。
This protocol describes the synthesis of oligo(poly(ethylene glycol) fumarate) (OPF) (1–35 kDa)(a polymer useful for tissue engineering applications) by a one-pot reaction of poly(ethylene glycol) (PEG) and fumaryl chloride. The procedure involves three parts: dichloromethane and PEG are first dried; the reaction step follows in which fumaryl chloride and triethylamine are added dropwise to a solution of PEG in dichloromethane; and finally the product solution is filtered to remove byproduct salt, and the OPF product is twice crystallized, washed, and dried under vacuum. The reaction is affected by PEG molecular weight and reactant molar ratio. The OPF product is cross-linked by radical polymerization by either a thermally induced or UV-induced radical initiator, and the physical properties of the OPF oligomer and resulting cross-linked hydrogel are easily tailored by varying PEG molecular weight. OPF hydrogels are injectable, polymerize in situ, and undergo biodegradation by hydrolysis of ester bonds. The expected time required to complete this protocol is 6 d.
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