聚乙烯醇/明胶共混凝胶薄膜的制备及其溶胀性能研究
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摘要
本文通过反复冷冻-解冻法制备了聚乙烯醇/明胶共混凝胶薄膜,借助傅里叶变换红外光谱(FTIR)、差示扫描量热仪(DSC)与X-射线衍射仪(XRD)考察了明胶含量对共混凝胶薄膜结构及其性能的影响。结果表明:聚乙烯醇与明胶具有良好的相容性;随着明胶含量的增加,聚乙烯醇的玻璃化温度呈现略微上升的趋势;少量明胶的加入促进了聚乙烯醇的结晶。此外,聚乙烯醇薄膜的溶胀度随明胶含量的增加而降低。
The polyvinyl alcohol/gelatin blend gel films were prepared by method of repeated freezing and thawing,and the effect of gelatin content on the structure and properties of the blend gel films was investigated by means of Fourier transform infrared spectrum(FTIR),differential scanning calorimetry(DSC) and X-ray diffraction(XRD).The results indicate that PVA and gelatin have good miscibility.As the gelatin content increases,the glass transition temperature(Tg) of polyvinyl alcohol increases.The addition of gelatin with low content promotes the crystallization of PVA.In addition,the swelling degree of PVA decreases while the gelatin content increases.
The polyvinyl alcohol/gelatin blend gel films were prepared by method of repeated freezing and thawing,and the effect of gelatin content on the structure and properties of the blend gel films was investigated by means of Fourier transform infrared spectrum(FTIR),differential scanning calorimetry(DSC) and X-ray diffraction(XRD).The results indicate that PVA and gelatin have good miscibility.As the gelatin content increases,the glass transition temperature(Tg) of polyvinyl alcohol increases.The addition of gelatin with low content promotes the crystallization of PVA.In addition,the swelling degree of PVA decreases while the gelatin content increases.
引文
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[2] 张毅,叶林.聚乙烯醇水凝胶功能化改性研究进展[J].材料导报,2016,30(5):151-157.
[3] 董彦博,李培金.淀粉对水转印用PVA膜的改性研究[J].应用化工,2007,36(4):376-379.
[4] 刘锋,张康助,王晓洁.聚乙烯醇薄膜的共混改性[J].化学推进剂与高分子材料,2006,4(3):47-51.
[5] 钱程.纤维素改性PVA水凝胶的制备及其性能研究[J],嘉兴学院学报,2012,24(6):80-85.
[6] 曾嵘,管蓉,李凯,等.交联壳聚糖/聚乙烯醇共混膜的制备及表征[J].高校化学工程学报,2018(1):1-9.
[7] 黄梅.冷冻解冻法聚乙烯醇凝胶体系研究[D].苏州:苏州大学,2012.
[8] MILLON L E,GUHADOS G,WAN W.Anisotropic polyvinyl alcohol-Bacterial cellulose nanocomposite for biomedical applications[J].Biomed Mater Res Part B:Appl.Biomater.,2008,86B(2):444-452.
[9] MINOURA N,KOYANO T,KOSHIZAKI N.Preparation,properties,and cell attachment/growth behavior of PVA/chitosan-blended hydrogels[J].Mater.Sci.Eng.C,1998,6(4):275-280.
[10] 李沁华,黄雷,李慧,等.不同质量配比壳聚糖/聚乙烯醇复合材料组织工程支架的制备[J].中国组织工程研究与临床康复,2010,14(3):477-481.
[11] 王华林,盛敏刚,翟林峰,等.聚乳酸/聚乙烯醇共混膜的制备[J].高分子材料科学与工程,2006,22(5):229-235.
[12] 高喜平,刘捷,汤克勇,等.明胶/聚乙烯醇共混复合膜的相容性[J].中国皮革,2015,44(16):21-25.
[13] 刘捷,王一坤,汤克勇.明胶/聚乙烯醇复合水凝胶的研究[C].两岸三地高分子液晶态与超分子有序结构学术会议暨全国高分子液晶态与超分子有序结构学术论文报告会,2010,195-198.
[14] 张幼珠,尹桂波,徐刚.聚乙烯醇/明胶共混膜的结构和性能研究[J].塑料工业,2004,32(5):34-36.
[15] 王竹,汪洋,刘耘,等.聚乙烯醇/明胶共混物的制备及性能[J].塑料,2017,46(6):17-23.
[16] PAL K,BANTHIA A K,MAJUMDAR D K.Preparation and characterization of polyvinyl alcohol-gelatin hydrogel membranes for biomedical applications[J].AAPS Pharm Sci Tech,2007,8(1):142-146.