CAJ | 학술논문

采用乙二胺四乙酸二酐(EDTAD)和醛基封端聚乙二醇(PEG-dial)对明胶蛋白进行酰化及还原胺化改性,然后与戊二醛(GTA)交联制备了复合改性明胶蛋白凝胶.研究了EDTAD、PEG-dial、交联剂等的用量对凝胶性能的影响,结果表明,随EDTAD用量的增多及GTA用量的减少凝胶的平衡溶胀率增大,PEG-dial的引入提高了破裂强度,所得凝胶的溶胀率为160g/g,破裂强度为16g.采用IR和SEM对其进行结构表征,结果表明,改性后明胶蛋白上引入了羧基和长碳链,复合改性后凝胶的微观结构更有序.
채용을이알사을산이항(EDTAD)화철기봉단취을이순(PEG-dial)대명효단백진행선화급환원알화개성,연후여무이철(GTA)교련제비료복합개성명효단백응효.연구료EDTAD、PEG-dial、교련제등적용량대응효성능적영향,결과표명,수EDTAD용량적증다급GTA용량적감소응효적평형용창솔증대,PEG-dial적인입제고료파렬강도,소득응효적용창솔위160g/g,파렬강도위16g.채용IR화SEM대기진행결구표정,결과표명,개성후명효단백상인입료최기화장탄련,복합개성후응효적미관결구경유서.
A EDTAD-PEG-dial-gelatin compound modified gel is prepared firstly by acylating gelatin protein with ethylenediaminetetraacetic dianhydride(EDTAD),followed by reducing amination with PEG-dial,and then by cross-linking with glutaraldehyde.The effects of the amount of EDTAD,PEG-rdial and glutaraldehyde (GTA) on the properties of gelatin gel are discussed.The results show that the swelling ratio of gels increases with increasing amount of EDTAD or decreasing amount of GTA.The rupture strength of gels is improved by introducing PEG-dial into gelatin molecules.The swelling ratio and rupture strength of gels are 160g/g and 16g respectively.The acylated gelatin protein is characterized by IR and the gel is characterized by SEM,it is found that more hydrophilic carboxyl group and long carbon chain of PEG are introduced into gelatin molecules,and a more ordered structure is obtained by compound modifying.