摘要
以明胶(Gel)和聚乙烯醇(PVA)为基体,通过溶液共混、浇铸成膜的方法制备了一系列明胶/聚乙烯醇共混复合膜。采用分光光度法、红外光谱(IR)、扫描电镜(SEM)、热重(TG)和差示扫描量热法(DSC)初步表征了复合膜的结构,研究了两组分间的相容性。结果表明,在Gel和PVA质量比为1∶5时,Gel/PVA复合膜的透光性最好;SEM结果显示,复合膜中明胶与聚乙烯醇之间没有发生相分离;DSC测试显示,复合膜的玻璃化转变温度(Tg)并不明显;TG测试结果显示,在失重20%、40%、50%时,Gel/PVA复合膜比纯PVA膜的热失重温度提高了很多。
In this paper, hydrophilic polymer such as gelatin （Gel） and polyvinyl alcohol （PVA） used as materials, a series of composite films with various mass ratio of Gel/PVA were obtained by solution blending. The measurements of absorbency, infrared spectroscopy （IR）, scanning electron microscopy （SEM）, thermogravimetry analysis （TG） and differential scanning calorimetry （DSC） were employed to characterize the compatibility between Gel and PVA in the blending systems. The results show that the transparency of blending film is the highest with the mass ratio of Gel/PVA of 1：5. There is no phase separation observed by SEM. The glass transition temperature（Tg） of the Gel/PVA composite film was not observed in the DSC curves. The mass loss temperature of Gel/PVA film were higher than that of pure PVA film when the mass loss is 20 %, 40 %, 50 %, respectively in the TG curves.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2013年第7期110-113,共4页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(50973097
20176199
U1204504)
关键词
明胶
聚乙烯醇
共混
相容性
gelatin
poly（vinyl alcohol）
blend
compatibility
